./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3470961458 <...> Warning: Permanently added '10.128.1.219' (ED25519) to the list of known hosts. execve("./syz-executor3470961458", ["./syz-executor3470961458"], 0x7ffe1688ea40 /* 10 vars */) = 0 brk(NULL) = 0x5555636e0000 brk(0x5555636e0d40) = 0x5555636e0d40 arch_prctl(ARCH_SET_FS, 0x5555636e03c0) = 0 set_tid_address(0x5555636e0690) = 300 set_robust_list(0x5555636e06a0, 24) = 0 rseq(0x5555636e0ce0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3470961458", 4096) = 28 getrandom("\xd3\x4e\x60\x3b\x7c\x11\xa2\xc7", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555636e0d40 brk(0x555563701d40) = 0x555563701d40 brk(0x555563702000) = 0x555563702000 mprotect(0x7fe6f8898000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 301 openat(AT_FDCWD, "/sys/kernel/debug/x86/nmi_longest_ns", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 301 attached ) = 3 [pid 301] set_robust_list(0x5555636e06a0, 24 [pid 300] write(3, "10000000000", 11) = 11 [pid 300] close(3) = 0 [pid 300] openat(AT_FDCWD, "/proc/sys/kernel/hung_task_check_interval_secs", O_WRONLY|O_CLOEXEC) = 3 [pid 301] <... set_robust_list resumed>) = 0 [pid 300] write(3, "20", 2) = 2 [pid 300] close(3) = 0 [pid 300] openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_kallsyms", O_WRONLY|O_CLOEXEC) = 3 [pid 300] write(3, "1", 1) = 1 [pid 300] close(3) = 0 [pid 300] openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_harden", O_WRONLY|O_CLOEXEC) = 3 [pid 300] write(3, "0", 1) = 1 [pid 300] close(3) = 0 [pid 300] openat(AT_FDCWD, "/proc/sys/kernel/kptr_restrict", O_WRONLY|O_CLOEXEC) = 3 [pid 300] write(3, "0", 1) = 1 [pid 300] close(3) = 0 [pid 300] openat(AT_FDCWD, "/proc/sys/kernel/softlockup_all_cpu_backtrace", O_WRONLY|O_CLOEXEC) = 3 [pid 300] write(3, "1", 1) = 1 [pid 300] close(3) = 0 [pid 300] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3 [pid 300] write(3, "100", 3) = 3 [pid 300] close(3) = 0 [pid 300] openat(AT_FDCWD, "/proc/sys/vm/oom_dump_tasks", O_WRONLY|O_CLOEXEC) = 3 [pid 300] write(3, "0", 1) = 1 [pid 300] close(3) = 0 [pid 300] openat(AT_FDCWD, "/proc/sys/debug/exception-trace", O_WRONLY|O_CLOEXEC) = 3 [pid 300] write(3, "0", 1) = 1 [pid 300] close(3) = 0 [pid 300] openat(AT_FDCWD, "/proc/sys/kernel/printk", O_WRONLY|O_CLOEXEC) = 3 [pid 300] write(3, "7 4 1 3", 7) = 7 [pid 300] close(3) = 0 [pid 300] openat(AT_FDCWD, "/proc/sys/kernel/keys/gc_delay", O_WRONLY|O_CLOEXEC) = 3 [pid 300] write(3, "1", 1) = 1 [pid 300] close(3) = 0 [pid 300] openat(AT_FDCWD, "/proc/sys/vm/oom_kill_allocating_task", O_WRONLY|O_CLOEXEC) = 3 [pid 300] write(3, "1", 1) = 1 [pid 300] close(3) = 0 [pid 300] openat(AT_FDCWD, "/proc/sys/kernel/ctrl-alt-del", O_WRONLY|O_CLOEXEC) = 3 [pid 300] write(3, "0", 1) = 1 [pid 300] close(3) = 0 [pid 300] openat(AT_FDCWD, "/proc/sys/kernel/cad_pid", O_WRONLY|O_CLOEXEC) = 3 [pid 300] write(3, "301", 3) = 3 [pid 300] close(3) = 0 [pid 300] kill(301, SIGKILL) = 0 [pid 301] +++ killed by SIGKILL +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=301, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 302 ./strace-static-x86_64: Process 302 attached [pid 302] set_robust_list(0x5555636e06a0, 24) = 0 [pid 300] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 303 attached [pid 300] <... clone resumed>, child_tidptr=0x5555636e0690) = 303 [pid 302] <... openat resumed>) = 3 [pid 300] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 304 [pid 300] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 305 [pid 300] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 306 [pid 303] set_robust_list(0x5555636e06a0, 24) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [ 32.958759][ T24] audit: type=1400 audit(1730006004.069:66): avc: denied { execmem } for pid=300 comm="syz-executor347" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [pid 302] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 302] close(3) = 0 [pid 303] <... openat resumed>) = 3 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 303] close(3) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 307 ./strace-static-x86_64: Process 307 attached [pid 307] set_robust_list(0x5555636e06a0, 24) = 0 [pid 307] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 307] setpgid(0, 0) = 0 [pid 307] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 307] write(3, "1000", 4) = 4 [pid 307] close(3) = 0 [pid 307] write(1, "executing program\n", 18executing program ) = 18 [pid 307] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 307] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 307] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 307] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 307] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[309]}, 88) = 309 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 307] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 307] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 310 ./strace-static-x86_64: Process 309 attached [pid 309] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 309] memfd_create("syzkaller", 0) = 3 [pid 309] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 309] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 310 attached [pid 310] set_robust_list(0x5555636e06a0, 24) = 0 [pid 310] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 310] setpgid(0, 0) = 0 [pid 310] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 310] write(3, "1000", 4) = 4 ./strace-static-x86_64: Process 304 attached ./strace-static-x86_64: Process 305 attached [pid 304] set_robust_list(0x5555636e06a0, 24 [pid 310] close(3) = 0 [pid 310] write(1, "executing program\n", 18executing program ) = 18 [pid 310] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 310] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 310] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 310] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 304] <... set_robust_list resumed>) = 0 [pid 310] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 305] set_robust_list(0x5555636e06a0, 24./strace-static-x86_64: Process 306 attached ) = 0 [pid 306] set_robust_list(0x5555636e06a0, 24 [pid 304] <... openat resumed>) = 3 [pid 304] ioctl(3, LOOP_CLR_FD [pid 310] <... mprotect resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 306] <... set_robust_list resumed>) = 0 [pid 304] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 310] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 309] <... write resumed>) = 262144 [pid 310] <... clone3 resumed> => {parent_tid=[312]}, 88) = 312 [pid 304] close(3 [pid 305] <... openat resumed>) = 3 [pid 304] <... close resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 310] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 313 [pid 306] <... openat resumed>) = 3 [pid 310] <... futex resumed>) = 0 [pid 310] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 309] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 305] close(3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 309] <... openat resumed>) = 4 [pid 309] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 309] close(3) = 0 [pid 309] close(4) = 0 [pid 309] mkdir("./file2", 0777) = 0 [pid 309] mount("/dev/loop1", "./file2", "ext4", MS_NODEV|MS_NOATIME, "nogrpid,resuid=0x000000000000ee01,debug_want_extra_isize=0x0000000000000068,debug,nombcache,quota,,e"... [pid 305] <... close resumed>) = 0 [pid 306] <... ioctl resumed>) = -1 ENXIO (No such device or address) ./strace-static-x86_64: Process 313 attached ./strace-static-x86_64: Process 312 attached [pid 306] close(3 [ 32.993177][ T24] audit: type=1400 audit(1730006004.099:67): avc: denied { read write } for pid=302 comm="syz-executor347" name="loop0" dev="devtmpfs" ino=111 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 33.040839][ T309] EXT4-fs: Warning: mounting with data=journal disables delayed allocation, dioread_nolock, O_DIRECT and fast_commit support! [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 315 attached [pid 313] set_robust_list(0x5555636e06a0, 24 [pid 312] set_robust_list(0x7fe6f87d19a0, 24 [pid 306] <... close resumed>) = 0 [pid 315] set_robust_list(0x5555636e06a0, 24) = 0 [pid 315] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 315] setpgid(0, 0) = 0 [pid 315] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 315] write(3, "1000", 4) = 4 [pid 315] close(3executing program ) = 0 [pid 315] write(1, "executing program\n", 18) = 18 [pid 315] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 315] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 315] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 315] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 315] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 315] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 315] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[317]}, 88) = 317 [pid 315] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 315] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 315] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 313] <... set_robust_list resumed>) = 0 [pid 313] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 313] setpgid(0, 0) = 0 [pid 313] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 313] write(3, "1000", 4) = 4 executing program [pid 313] close(3) = 0 [pid 313] write(1, "executing program\n", 18) = 18 [pid 313] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 313] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 313] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 313] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 313] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 313] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 313] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[318]}, 88) = 318 [pid 313] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 313] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 313] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 312] <... set_robust_list resumed>) = 0 [pid 312] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 312] memfd_create("syzkaller", 0) = 3 [pid 312] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 312] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 312] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 312] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 312] ioctl(4, LOOP_SET_FD, 3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 320 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 315 [ 33.053808][ T24] audit: type=1400 audit(1730006004.099:68): avc: denied { open } for pid=302 comm="syz-executor347" path="/dev/loop0" dev="devtmpfs" ino=111 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 33.054460][ T309] EXT4-fs (loop1): encrypted files will use data=ordered instead of data journaling mode ./strace-static-x86_64: Process 320 attached ./strace-static-x86_64: Process 318 attached ./strace-static-x86_64: Process 317 attached [pid 312] <... ioctl resumed>) = 0 [pid 312] close(3) = 0 [pid 312] close(4 [pid 320] set_robust_list(0x5555636e06a0, 24 [pid 318] set_robust_list(0x7fe6f87d19a0, 24 [pid 317] set_robust_list(0x7fe6f87d19a0, 24 [pid 320] <... set_robust_list resumed>) = 0 [pid 318] <... set_robust_list resumed>) = 0 [pid 317] <... set_robust_list resumed>) = 0 [pid 320] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 318] rt_sigprocmask(SIG_SETMASK, [], [pid 317] rt_sigprocmask(SIG_SETMASK, [], [pid 320] <... prctl resumed>) = 0 [pid 318] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 317] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 320] setpgid(0, 0 [pid 318] memfd_create("syzkaller", 0 [pid 317] memfd_create("syzkaller", 0 [pid 320] <... setpgid resumed>) = 0 [pid 318] <... memfd_create resumed>) = 3 [pid 317] <... memfd_create resumed>) = 3 [pid 320] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 318] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 317] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 320] <... openat resumed>) = 3 [pid 318] <... mmap resumed>) = 0x7fe6f03b1000 [pid 317] <... mmap resumed>) = 0x7fe6f03b1000 executing program [pid 320] write(3, "1000", 4 [pid 318] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 317] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 320] <... write resumed>) = 4 [pid 320] close(3) = 0 [pid 320] write(1, "executing program\n", 18) = 18 [pid 320] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 320] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 320] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 320] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 320] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 320] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 320] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[321]}, 88) = 321 [pid 320] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 318] <... write resumed>) = 262144 [pid 320] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 320] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 317] <... write resumed>) = 262144 [pid 318] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 317] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 318] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 317] openat(AT_FDCWD, "/dev/loop3", O_RDWR./strace-static-x86_64: Process 321 attached [pid 321] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 321] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 321] memfd_create("syzkaller", 0) = 3 [pid 321] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 321] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 321] munmap(0x7fe6f03b1000, 138412032) = 0 [ 33.082966][ T24] audit: type=1400 audit(1730006004.119:69): avc: denied { ioctl } for pid=302 comm="syz-executor347" path="/dev/loop0" dev="devtmpfs" ino=111 ioctlcmd=0x4c01 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 33.100787][ T309] [EXT4 FS bs=1024, gc=1, bpg=8192, ipg=32, mo=a00ec019, mo2=0002] [ 33.113806][ T24] audit: type=1400 audit(1730006004.149:70): avc: denied { mounton } for pid=307 comm="syz-executor347" path="/root/file2" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 33.124329][ T309] System zones: 1-12 [pid 321] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 312] <... close resumed>) = 0 [pid 312] mkdir("./file2", 0777) = -1 EEXIST (File exists) [pid 312] mount("/dev/loop0", "./file2", "ext4", MS_NODEV|MS_NOATIME, "nogrpid,resuid=0x000000000000ee01,debug_want_extra_isize=0x0000000000000068,debug,nombcache,quota,,e"... [pid 309] <... mount resumed>) = 0 [pid 309] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 309] chdir("./file2") = 0 [pid 309] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 321] <... openat resumed>) = 4 [pid 318] <... openat resumed>) = 4 [pid 317] <... openat resumed>) = 4 [pid 321] ioctl(4, LOOP_SET_FD, 3 [pid 318] ioctl(4, LOOP_SET_FD, 3 [pid 317] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 317] close(3) = 0 [pid 317] close(4 [pid 309] <... openat resumed>) = 4 [pid 309] ioctl(4, LOOP_CLR_FD [pid 321] <... ioctl resumed>) = 0 [pid 321] close(3) = 0 [pid 318] <... ioctl resumed>) = 0 [pid 321] close(4 [pid 318] close(3) = 0 [ 33.148364][ T309] EXT4-fs warning (device loop1): ext4_expand_extra_isize_ea:2806: Unable to expand inode 15. Delete some EAs or run e2fsck. [ 33.161404][ T309] EXT4-fs (loop1): 1 truncate cleaned up [ 33.167062][ T309] EXT4-fs (loop1): mounted filesystem without journal. Opts: nogrpid,resuid=0x000000000000ee01,debug_want_extra_isize=0x0000000000000068,debug,nombcache,quota,,errors=continue [ 33.184450][ T24] audit: type=1400 audit(1730006004.299:71): avc: denied { mount } for pid=307 comm="syz-executor347" name="/" dev="loop1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [pid 318] close(4 [pid 317] <... close resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 309] close(4 [pid 317] mkdir("./file2", 0777) = -1 EEXIST (File exists) [pid 317] mount("/dev/loop3", "./file2", "ext4", MS_NODEV|MS_NOATIME, "nogrpid,resuid=0x000000000000ee01,debug_want_extra_isize=0x0000000000000068,debug,nombcache,quota,,e"... [pid 321] <... close resumed>) = 0 [pid 321] mkdir("./file2", 0777) = -1 EEXIST (File exists) [ 33.267844][ T312] EXT4-fs (loop0): encrypted files will use data=ordered instead of data journaling mode [ 33.270592][ T24] audit: type=1400 audit(1730006004.379:72): avc: denied { mounton } for pid=315 comm="syz-executor347" path="/root/file2" dev="loop1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 33.278536][ T312] [EXT4 FS bs=1024, gc=1, bpg=8192, ipg=32, mo=a00ec019, mo2=0002] [ 33.307928][ T312] System zones: 1-12 [ 33.312579][ T312] EXT4-fs (loop0): 1 truncate cleaned up [pid 321] mount("/dev/loop4", "./file2", "ext4", MS_NODEV|MS_NOATIME, "nogrpid,resuid=0x000000000000ee01,debug_want_extra_isize=0x0000000000000068,debug,nombcache,quota,,e"... [pid 312] <... mount resumed>) = 0 [pid 312] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 312] chdir("./file2") = 0 [pid 312] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 318] <... close resumed>) = 0 [pid 309] <... close resumed>) = 0 [pid 309] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 307] <... futex resumed>) = 0 [pid 309] chdir("./file0" [pid 307] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] <... chdir resumed>) = 0 [pid 307] <... futex resumed>) = 0 [pid 309] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] <... futex resumed>) = 0 [pid 307] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 309] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 318] mkdir("./file2", 0777 [pid 307] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 307] <... futex resumed>) = 0 [pid 307] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 318] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 318] mount("/dev/loop2", "./file2", "ext4", MS_NODEV|MS_NOATIME, "nogrpid,resuid=0x000000000000ee01,debug_want_extra_isize=0x0000000000000068,debug,nombcache,quota,,e"... [ 33.318056][ T312] EXT4-fs (loop0): mounted filesystem without journal. Opts: nogrpid,resuid=0x000000000000ee01,debug_want_extra_isize=0x0000000000000068,debug,nombcache,quota,,errors=continue [pid 309] creat("./bus", 000) = 4 [pid 309] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 307] <... futex resumed>) = 0 [pid 309] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 307] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] <... openat resumed>) = 5 [pid 307] <... futex resumed>) = 0 [pid 309] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] <... futex resumed>) = 0 [pid 307] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 309] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 307] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] <... mount resumed>) = 0 [pid 307] <... futex resumed>) = 0 [pid 309] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 309] <... futex resumed>) = 0 [pid 307] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 309] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 307] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 33.359735][ T24] audit: type=1400 audit(1730006004.469:73): avc: denied { write } for pid=307 comm="syz-executor347" name="file0" dev="loop1" ino=12 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 33.381870][ T24] audit: type=1400 audit(1730006004.469:74): avc: denied { add_name } for pid=307 comm="syz-executor347" name="bus" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [pid 307] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 307] futex(0x7fe6f889e6dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 307] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f8790000 [pid 307] mprotect(0x7fe6f8791000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87b0990, parent_tid=0x7fe6f87b0990, exit_signal=0, stack=0x7fe6f8790000, stack_size=0x20300, tls=0x7fe6f87b06c0} => {parent_tid=[326]}, 88) = 326 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 307] futex(0x7fe6f889e6d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 307] futex(0x7fe6f889e6dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 326 attached [pid 326] set_robust_list(0x7fe6f87b09a0, 24) = 0 [pid 326] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 326] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, -1, 0) = -1 EBADF (Bad file descriptor) [pid 326] futex(0x7fe6f889e6dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] <... futex resumed>) = 0 [pid 307] futex(0x7fe6f889e6d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 307] futex(0x7fe6f889e6dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 326] <... futex resumed>) = 1 [pid 326] memfd_create("syzkaller", 0) = 7 [pid 326] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f0390000 [pid 326] write(7, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 326] munmap(0x7fe6f0390000, 138412032) = 0 [pid 326] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 312] <... openat resumed>) = 4 [pid 309] <... open resumed>) = 6 [pid 312] ioctl(4, LOOP_CLR_FD [pid 326] <... openat resumed>) = 8 [pid 326] ioctl(8, LOOP_SET_FD, 7) = -1 EBUSY (Device or resource busy) [pid 326] ioctl(8, LOOP_CLR_FD) = 0 [pid 326] ioctl(8, LOOP_SET_FD, 7) = -1 EBUSY (Device or resource busy) [pid 326] close(8) = 0 [pid 326] close(7) = 0 [pid 326] futex(0x7fe6f889e6dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] <... futex resumed>) = 0 [pid 307] futex(0x7fe6f889e6d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 307] futex(0x7fe6f889e6dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 326] <... futex resumed>) = 1 [pid 326] mknod("./file0", 000) = -1 EEXIST (File exists) [pid 326] futex(0x7fe6f889e6dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] <... futex resumed>) = 0 [pid 326] <... futex resumed>) = 1 [pid 326] futex(0x7fe6f889e6d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 312] <... ioctl resumed>) = 0 [pid 309] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 312] close(4 [pid 309] <... futex resumed>) = 0 [pid 312] <... close resumed>) = 0 [pid 309] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 312] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] exit_group(0 [pid 312] <... futex resumed>) = 1 [pid 312] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 310] <... futex resumed>) = 0 [pid 309] <... futex resumed>) = ? [pid 307] <... exit_group resumed>) = ? [pid 310] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] +++ exited with 0 +++ [pid 312] <... futex resumed>) = 0 [pid 310] <... futex resumed>) = 1 [pid 312] chdir("./file0" [pid 310] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 326] <... futex resumed>) = ? [pid 326] +++ exited with 0 +++ [pid 307] +++ exited with 0 +++ [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=307, si_uid=0, si_status=0, si_utime=0, si_stime=10} --- [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 312] <... chdir resumed>) = 0 [pid 312] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 310] <... futex resumed>) = 0 [pid 312] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 310] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 312] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 310] <... futex resumed>) = 0 [pid 312] creat("./bus", 000 [pid 310] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 312] <... creat resumed>) = 4 [pid 312] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 310] <... futex resumed>) = 0 [pid 312] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 310] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 312] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 310] <... futex resumed>) = 0 [pid 312] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 310] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 312] <... openat resumed>) = 5 [pid 312] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... restart_syscall resumed>) = 0 [pid 312] <... futex resumed>) = 1 [pid 310] <... futex resumed>) = 0 [pid 312] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 310] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 312] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 310] <... futex resumed>) = 0 [pid 312] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 310] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 312] <... mount resumed>) = 0 [pid 312] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 310] <... futex resumed>) = 0 [pid 312] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 310] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 312] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 310] <... futex resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 312] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 6 [pid 310] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... openat resumed>) = 3 [pid 312] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 312] <... futex resumed>) = 0 [pid 310] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] ioctl(3, LOOP_CLR_FD [pid 312] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 6, 0 [pid 310] <... futex resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 303] close(3 [pid 310] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... close resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 329 [pid 312] <... mmap resumed>) = 0x20000000 [pid 312] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 310] <... futex resumed>) = 0 [pid 312] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 310] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 312] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 310] <... futex resumed>) = 0 [pid 312] memfd_create("syzkaller", 0 [pid 310] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 312] <... memfd_create resumed>) = 7 [pid 312] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 ./strace-static-x86_64: Process 329 attached [pid 312] write(7, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 329] set_robust_list(0x5555636e06a0, 24) = 0 [pid 329] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 329] setpgid(0, 0) = 0 [pid 329] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 329] write(3, "1000", 4) = 4 [pid 329] close(3) = 0 [pid 329] write(1, "executing program\n", 18executing program ) = 18 [pid 329] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 329] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 312] <... write resumed>) = 131072 [pid 312] munmap(0x7fe6f03b1000, 138412032 [pid 329] <... rt_sigaction resumed>NULL, 8) = 0 [pid 329] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 312] <... munmap resumed>) = 0 [pid 312] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 8 [pid 312] ioctl(8, LOOP_SET_FD, 7) = -1 EBUSY (Device or resource busy) [pid 312] ioctl(8, LOOP_CLR_FD) = 0 [pid 312] ioctl(8, LOOP_SET_FD, 7) = -1 EBUSY (Device or resource busy) [pid 312] close(8) = 0 [pid 312] close(7) = 0 [pid 312] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 310] <... futex resumed>) = 0 [pid 312] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 310] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 312] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 310] <... futex resumed>) = 0 [pid 312] mknod(0x20000000, 000 [ 33.402617][ T24] audit: type=1400 audit(1730006004.469:75): avc: denied { create } for pid=307 comm="syz-executor347" name="bus" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [ 33.423630][ T317] EXT4-fs (loop3): encrypted files will use data=ordered instead of data journaling mode [ 33.426698][ T321] EXT4-fs (loop4): encrypted files will use data=ordered instead of data journaling mode [ 33.433412][ T318] EXT4-fs (loop2): encrypted files will use data=ordered instead of data journaling mode [pid 310] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 329] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 329] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 329] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 329] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 329] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[332]}, 88) = 332 [pid 329] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 329] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 329] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 332 attached [pid 332] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 332] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 332] memfd_create("syzkaller", 0) = 3 [pid 332] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 332] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 332] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 332] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 332] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 332] ioctl(4, LOOP_CLR_FD) = 0 [pid 332] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 332] close(4) = 0 [pid 332] close(3) = 0 [pid 332] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 329] <... futex resumed>) = 0 [pid 329] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 33.478297][ T312] ================================================================== [ 33.482263][ T321] [EXT4 FS bs=1024, gc=1, bpg=8192, ipg=32, mo=a00ec019, mo2=0002] [ 33.486206][ T312] BUG: KASAN: use-after-free in ext4_search_dir+0xf7/0x1b0 [ 33.486215][ T312] Read of size 1 at addr ffff88810d5a6900 by task syz-executor347/312 [ 33.486225][ T312] [ 33.509441][ T321] System zones: [ 33.511093][ T312] CPU: 1 PID: 312 Comm: syz-executor347 Not tainted 5.10.226-syzkaller #0 [pid 329] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 332] <... futex resumed>) = 1 [pid 332] chdir("./file0") = -1 ENOENT (No such file or directory) [pid 332] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 329] <... futex resumed>) = 0 [pid 329] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 329] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 332] <... futex resumed>) = 1 [pid 332] creat("./bus", 000) = 3 [pid 332] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 329] <... futex resumed>) = 0 [pid 329] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 329] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 332] <... futex resumed>) = 1 [ 33.511099][ T312] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 33.511115][ T312] Call Trace: [ 33.525105][ T321] 1-12 [ 33.532712][ T312] dump_stack_lvl+0x1e2/0x24b [ 33.532722][ T312] ? bfq_pos_tree_add_move+0x43b/0x43b [ 33.532728][ T312] ? panic+0x812/0x812 [ 33.532739][ T312] print_address_description+0x81/0x3b0 [ 33.532747][ T312] kasan_report+0x179/0x1c0 [ 33.532765][ T312] ? ext4_search_dir+0xf7/0x1b0 [ 33.538269][ T321] [ 33.538357][ T312] ? ext4_search_dir+0xf7/0x1b0 [ 33.552076][ T312] __asan_report_load1_noabort+0x14/0x20 [ 33.564834][ T321] EXT4-fs (loop4): 1 truncate cleaned up [ 33.566471][ T312] ext4_search_dir+0xf7/0x1b0 [ 33.566482][ T312] ext4_find_inline_entry+0x4b6/0x5e0 [ 33.566492][ T312] ? ext4_try_create_inline_dir+0x320/0x320 [ 33.566510][ T312] ? stack_trace_save+0x113/0x1c0 [ 33.569773][ T321] EXT4-fs (loop4): mounted filesystem without journal. Opts: nogrpid,resuid=0x000000000000ee01,debug_want_extra_isize=0x0000000000000068,debug,nombcache,quota,,errors=continue [ 33.573341][ T312] ? stack_trace_snprint+0xf0/0xf0 [ 33.579460][ T318] [EXT4 FS bs=1024, gc=1, bpg=8192, ipg=32, mo=a00ec019, mo2=0002] [ 33.584277][ T312] ? selinux_inode_permission+0x449/0x690 [ 33.605135][ T318] System zones: [ 33.621898][ T312] __ext4_find_entry+0x2b0/0x1990 [ 33.621909][ T312] ? __kasan_slab_alloc+0xc3/0xe0 [ 33.621917][ T312] ? __kasan_slab_alloc+0xb1/0xe0 [ 33.621925][ T312] ? __d_alloc+0x2d/0x6c0 [ 33.621933][ T312] ? d_alloc+0x4b/0x1d0 [ 33.621941][ T312] ? __lookup_hash+0xe7/0x290 [ 33.621951][ T312] ? do_syscall_64+0x34/0x70 [ 33.621971][ T312] ? entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 33.642182][ T318] 1-12 [ 33.643509][ T312] ? ext4_ci_compare+0x660/0x660 [ 33.643525][ T312] ? generic_set_encrypted_ci_d_ops+0x91/0xf0 [ 33.649116][ T318] [ 33.653227][ T312] ext4_lookup+0x3c6/0xaa0 [ 33.653242][ T312] ? ext4_add_entry+0x1280/0x1280 [ 33.662270][ T312] ? __kasan_check_write+0x14/0x20 [ 33.662281][ T312] ? _raw_spin_lock+0xa4/0x1b0 [ 33.662298][ T312] ? __d_alloc+0x4dd/0x6c0 [ 33.667333][ T318] EXT4-fs (loop2): 1 truncate cleaned up [ 33.670851][ T312] ? _raw_spin_unlock+0x4d/0x70 [ 33.670868][ T312] ? d_alloc+0x199/0x1d0 [ 33.675362][ T318] EXT4-fs (loop2): mounted filesystem without journal. Opts: nogrpid,resuid=0x000000000000ee01,debug_want_extra_isize=0x0000000000000068,debug,nombcache,quota,,errors=continue [ 33.681168][ T312] __lookup_hash+0x143/0x290 [ 33.681177][ T312] filename_create+0x202/0x750 [ 33.681187][ T312] ? __check_object_size+0x2e6/0x3c0 [ 33.681196][ T312] ? kern_path_create+0x40/0x40 [ 33.681206][ T312] do_mknodat+0x187/0x450 [ 33.681214][ T312] ? may_open+0x3f0/0x3f0 [ 33.681223][ T312] ? fpu__clear_all+0x20/0x20 [ 33.681239][ T312] __x64_sys_mknod+0x80/0x90 [ 33.729840][ T318] EXT4-fs error (device loop2): ext4_find_dest_de:2077: inode #12: block 7: comm syz-executor347: bad entry in directory: directory entry overrun - offset=0, inode=1793120026, rec_len=34652, size=56 fake=0 [ 33.733685][ T312] do_syscall_64+0x34/0x70 [ 33.733705][ T312] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 33.810320][ T317] [EXT4 FS bs=1024, gc=1, bpg=8192, ipg=32, mo=a00ec019, mo2=0002] [ 33.811100][ T312] RIP: 0033:0x7fe6f8814db9 [ 33.811115][ T312] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 [ 33.817087][ T317] System zones: [ 33.824654][ T312] RSP: 002b:00007fe6f87d1218 EFLAGS: 00000246 ORIG_RAX: 0000000000000085 [ 33.824667][ T312] RAX: ffffffffffffffda RBX: 00007fe6f889e6c8 RCX: 00007fe6f8814db9 [ 33.824673][ T312] RDX: 0000000000000701 RSI: 0000000000000000 RDI: 0000000020000000 [ 33.824679][ T312] RBP: 00007fe6f889e6c0 R08: 0000000000000000 R09: 0000000000000000 [ 33.824691][ T312] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe6f886ac18 [ 33.829866][ T317] 1-12 [ 33.848439][ T312] R13: 00007fe6f8869060 R14: 0030656c69662f2e R15: 33921e5989711fe9 [ 33.848445][ T312] [ 33.848450][ T312] Allocated by task 294: [ 33.848464][ T312] __kasan_slab_alloc+0xb1/0xe0 [ 33.848474][ T312] slab_post_alloc_hook+0x61/0x2f0 [ 33.848482][ T312] kmem_cache_alloc+0x168/0x2e0 [ 33.848503][ T312] __alloc_skb+0x80/0x510 [ 33.852798][ T317] [ 33.860331][ T312] sk_stream_alloc_skb+0x1f8/0xae0 [ 33.860339][ T312] tcp_sendmsg_locked+0xce3/0x3ae0 [ 33.860345][ T312] tcp_sendmsg+0x2f/0x50 [ 33.860353][ T312] inet_sendmsg+0xa1/0xc0 [ 33.860368][ T312] sock_write_iter+0x39b/0x530 [ 33.875956][ T312] vfs_write+0xb4c/0xe70 [ 33.875971][ T312] ksys_write+0x199/0x2c0 [ 33.884830][ T317] EXT4-fs (loop3): 1 truncate cleaned up [ 33.891705][ T312] __x64_sys_write+0x7b/0x90 [ 33.891715][ T312] do_syscall_64+0x34/0x70 [ 33.891724][ T312] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 33.891727][ T312] [ 33.891731][ T312] Freed by task 0: [ 33.891739][ T312] kasan_set_track+0x4b/0x70 [ 33.891747][ T312] kasan_set_free_info+0x23/0x40 [ 33.891754][ T312] ____kasan_slab_free+0x121/0x160 [ 33.891760][ T312] __kasan_slab_free+0x11/0x20 [ 33.891777][ T312] slab_free_freelist_hook+0xc0/0x190 [ 33.895547][ T317] EXT4-fs (loop3): mounted filesystem without journal. Opts: nogrpid,resuid=0x000000000000ee01,debug_want_extra_isize=0x0000000000000068,debug,nombcache,quota,,errors=continue [ 33.902032][ T312] kmem_cache_free+0xa9/0x1e0 [ 33.902040][ T312] kfree_skbmem+0x104/0x170 [ 33.902047][ T312] napi_consume_skb+0xfd/0x490 [ 33.902057][ T312] free_old_xmit_skbs+0x119/0x290 [ 33.902071][ T312] virtnet_poll_tx+0x1f1/0x500 [ 33.952169][ T321] EXT4-fs error (device loop4): ext4_find_dest_de:2077: inode #12: block 7: comm syz-executor347: bad entry in directory: directory entry overrun - offset=0, inode=1793120026, rec_len=34652, size=56 fake=0 [ 33.955752][ T312] net_rx_action+0x516/0x10d0 [ 33.955767][ T312] __do_softirq+0x268/0x5bb [ 33.972248][ T317] EXT4-fs error (device loop3): ext4_find_dest_de:2077: inode #12: block 7: comm syz-executor347: bad entry in directory: directory entry overrun - offset=0, inode=1793120026, rec_len=34652, size=56 fake=0 [ 33.974059][ T312] [ 34.100279][ T312] The buggy address belongs to the object at ffff88810d5a6780 [ 34.100279][ T312] which belongs to the cache skbuff_fclone_cache of size 504 [ 34.114873][ T312] The buggy address is located 384 bytes inside of [ 34.114873][ T312] 504-byte region [ffff88810d5a6780, ffff88810d5a6978) [ 34.127966][ T312] The buggy address belongs to the page: [ 34.133454][ T312] page:ffffea0004356980 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10d5a6 [ 34.143505][ T312] head:ffffea0004356980 order:1 compound_mapcount:0 [ 34.149931][ T312] flags: 0x4000000000010200(slab|head) [ 34.155227][ T312] raw: 4000000000010200 dead000000000100 dead000000000122 ffff888107d9cf00 [ 34.163730][ T312] raw: 0000000000000000 00000000000c000c 00000001ffffffff 0000000000000000 [ 34.172140][ T312] page dumped because: kasan: bad access detected [ 34.178396][ T312] page_owner tracks the page as allocated [ 34.183955][ T312] page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 294, ts 33099379523, free_ts 33020799192 [ 34.202790][ T312] prep_new_page+0x166/0x180 [ 34.207227][ T312] get_page_from_freelist+0x2d8c/0x2f30 [ 34.212605][ T312] __alloc_pages_nodemask+0x435/0xaf0 [ 34.218267][ T312] new_slab+0x80/0x400 [ 34.222144][ T312] ___slab_alloc+0x302/0x4b0 [ 34.226569][ T312] __slab_alloc+0x63/0xa0 [ 34.230736][ T312] kmem_cache_alloc+0x1b9/0x2e0 [ 34.235424][ T312] __alloc_skb+0x80/0x510 [ 34.239590][ T312] sk_stream_alloc_skb+0x1f8/0xae0 [ 34.244539][ T312] tcp_sendmsg_locked+0xce3/0x3ae0 [ 34.249485][ T312] tcp_sendmsg+0x2f/0x50 [ 34.253562][ T312] inet_sendmsg+0xa1/0xc0 [ 34.257728][ T312] sock_write_iter+0x39b/0x530 [ 34.262328][ T312] vfs_write+0xb4c/0xe70 [ 34.266409][ T312] ksys_write+0x199/0x2c0 [ 34.270576][ T312] __x64_sys_write+0x7b/0x90 [ 34.275164][ T312] page last free stack trace: [ 34.279688][ T312] __free_pages_ok+0x82c/0x850 [ 34.284286][ T312] free_the_page+0x76/0x370 [ 34.288626][ T312] __free_pages+0x67/0xc0 [ 34.292789][ T312] __free_slab+0xcf/0x190 [ 34.296966][ T312] unfreeze_partials+0x15e/0x190 [ 34.301828][ T312] put_cpu_partial+0xbf/0x180 [ 34.306333][ T312] __slab_free+0x2c8/0x3a0 [ 34.310589][ T312] ___cache_free+0x111/0x130 [ 34.315012][ T312] qlink_free+0x50/0x90 [ 34.319003][ T312] qlist_free_all+0x47/0xb0 [ 34.323347][ T312] kasan_quarantine_reduce+0x15a/0x170 [ 34.328668][ T312] __kasan_slab_alloc+0x2f/0xe0 [ 34.333337][ T312] slab_post_alloc_hook+0x61/0x2f0 [ 34.338298][ T312] kmem_cache_alloc+0x168/0x2e0 [ 34.342962][ T312] getname_flags+0xba/0x520 [ 34.347301][ T312] getname+0x19/0x20 [ 34.351020][ T312] [ 34.353201][ T312] Memory state around the buggy address: [ 34.358669][ T312] ffff88810d5a6800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.366569][ T312] ffff88810d5a6880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.374559][ T312] >ffff88810d5a6900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [pid 332] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 332] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 329] <... futex resumed>) = 0 [pid 329] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 329] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 332] <... futex resumed>) = 1 [pid 332] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL) = 0 [pid 332] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 329] <... futex resumed>) = 0 [pid 329] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 329] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 332] <... futex resumed>) = 1 [pid 332] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 332] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 329] <... futex resumed>) = 0 [pid 329] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 329] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 332] <... futex resumed>) = 1 [pid 332] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 332] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 329] <... futex resumed>) = 0 [pid 329] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 329] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 332] <... futex resumed>) = 1 [pid 332] memfd_create("syzkaller", 0) = 6 [pid 332] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 332] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 332] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 332] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 7 [pid 332] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 332] ioctl(7, LOOP_CLR_FD) = 0 [pid 332] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 332] close(7) = 0 [pid 332] close(6) = 0 [pid 332] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 329] <... futex resumed>) = 0 [pid 329] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 329] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 332] mknod(0x20000000, 000) = 0 [pid 332] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 329] <... futex resumed>) = 0 [pid 329] exit_group(0) = ? [pid 332] +++ exited with 0 +++ [pid 329] +++ exited with 0 +++ [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=329, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 303] ioctl(3, LOOP_CLR_FD) = 0 [pid 303] close(3) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 333 ./strace-static-x86_64: Process 333 attached [pid 333] set_robust_list(0x5555636e06a0, 24) = 0 [pid 333] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 333] setpgid(0, 0) = 0 [pid 333] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 333] write(3, "1000", 4) = 4 [pid 333] close(3) = 0 [pid 333] write(1, "executing program\n", 18executing program ) = 18 [pid 333] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 333] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 333] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 333] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 333] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 333] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 333] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[334]}, 88) = 334 [pid 333] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 333] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 333] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 321] <... mount resumed>) = 0 [pid 310] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 321] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 321] chdir("./file2") = 0 [pid 321] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 321] ioctl(4, LOOP_CLR_FD) = 0 [pid 321] close(4) = 0 [pid 321] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 321] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 318] <... mount resumed>) = 0 [pid 318] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 318] chdir("./file2") = 0 [pid 318] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 318] ioctl(4, LOOP_CLR_FD) = 0 [pid 318] close(4) = 0 [pid 318] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 313] <... futex resumed>) = 0 [pid 313] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 313] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 318] <... futex resumed>) = 1 [pid 318] chdir("./file0") = 0 [pid 318] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 313] <... futex resumed>) = 0 [pid 313] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 313] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 318] <... futex resumed>) = 1 [pid 318] creat("./bus", 000) = 4 [pid 318] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 313] <... futex resumed>) = 0 [pid 313] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 313] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 318] <... futex resumed>) = 1 [pid 318] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 318] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 313] <... futex resumed>) = 0 [pid 313] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 313] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 318] <... futex resumed>) = 1 [pid 318] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL) = 0 [pid 318] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 313] <... futex resumed>) = 0 [pid 313] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 313] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 318] <... futex resumed>) = 1 [pid 318] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 6 [pid 318] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 313] <... futex resumed>) = 0 [pid 313] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 313] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 318] <... futex resumed>) = 1 [pid 318] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 6, 0) = 0x20000000 [pid 318] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 313] <... futex resumed>) = 0 [pid 313] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 313] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 318] <... futex resumed>) = 1 [pid 318] memfd_create("syzkaller", 0) = 7 [pid 318] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 318] write(7, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 318] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 318] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 8 [pid 318] ioctl(8, LOOP_SET_FD, 7) = -1 EBUSY (Device or resource busy) [pid 318] ioctl(8, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 334 attached [pid 334] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 334] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 334] memfd_create("syzkaller", 0) = 3 [pid 334] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 318] ioctl(8, LOOP_SET_FD, 7) = -1 EBUSY (Device or resource busy) [pid 318] close(8) = 0 [pid 318] close(7) = 0 [pid 318] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 313] <... futex resumed>) = 0 [pid 313] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 313] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 318] <... futex resumed>) = 1 [pid 318] mknod(0x20000000, 000 [pid 334] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 334] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 334] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 334] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 334] ioctl(4, LOOP_CLR_FD) = 0 [pid 318] <... mknod resumed>) = -1 EUCLEAN (Structure needs cleaning) [pid 318] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 313] <... futex resumed>) = 0 [pid 313] exit_group(0) = ? [pid 318] <... futex resumed>) = ? [pid 334] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 334] close(4) = 0 [pid 334] close(3) = 0 [pid 334] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 333] <... futex resumed>) = 0 [pid 334] chdir("./file0" [pid 333] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 334] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 333] <... futex resumed>) = 0 [pid 334] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 333] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 334] <... futex resumed>) = 0 [pid 333] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 334] creat("./bus", 000 [pid 333] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 334] <... creat resumed>) = 3 [pid 333] <... futex resumed>) = 0 [pid 334] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 333] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 334] <... futex resumed>) = 0 [pid 333] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 334] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 333] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 334] <... openat resumed>) = 4 [pid 333] <... futex resumed>) = 0 [pid 334] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 333] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 334] <... futex resumed>) = 0 [pid 333] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 334] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 333] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 334] <... mount resumed>) = 0 [pid 333] <... futex resumed>) = 0 [pid 334] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 333] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 334] <... futex resumed>) = 0 [pid 333] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 334] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 333] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 334] <... open resumed>) = 5 [pid 333] <... futex resumed>) = 0 [pid 334] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 333] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 334] <... futex resumed>) = 0 [pid 333] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 334] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 333] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 334] <... mmap resumed>) = 0x20000000 [pid 333] <... futex resumed>) = 0 [pid 334] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 333] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 334] <... futex resumed>) = 0 [pid 333] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 334] memfd_create("syzkaller", 0 [pid 333] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 334] <... memfd_create resumed>) = 6 [pid 333] <... futex resumed>) = 0 [pid 334] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 333] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 334] <... mmap resumed>) = 0x7fe6f03b1000 [pid 334] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 334] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 334] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 7 [pid 334] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 334] ioctl(7, LOOP_CLR_FD) = 0 [pid 334] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 334] close(7) = 0 [pid 334] close(6) = 0 [pid 334] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 333] <... futex resumed>) = 0 [pid 333] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 333] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 334] <... futex resumed>) = 1 [pid 334] mknod(0x20000000, 000) = -1 EEXIST (File exists) [pid 334] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 333] <... futex resumed>) = 0 [pid 334] <... futex resumed>) = 1 [pid 333] exit_group(0) = ? [pid 334] +++ exited with 0 +++ [pid 333] +++ exited with 0 +++ [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=333, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 303] ioctl(3, LOOP_CLR_FD) = 0 [pid 303] close(3) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 337 [pid 318] +++ exited with 0 +++ [pid 313] +++ exited with 0 +++ [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=313, si_uid=0, si_status=0, si_utime=0, si_stime=8} --- [pid 304] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 304] ioctl(3, LOOP_CLR_FD) = 0 [pid 304] close(3) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 338 [pid 317] <... mount resumed>) = 0 [pid 317] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 317] chdir("./file2") = 0 [pid 317] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 317] ioctl(4, LOOP_CLR_FD) = 0 [pid 317] close(4) = 0 [pid 317] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 315] <... futex resumed>) = 0 [pid 315] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 315] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 317] <... futex resumed>) = 1 [pid 317] chdir("./file0") = 0 [pid 317] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 315] <... futex resumed>) = 0 [pid 315] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 315] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 317] <... futex resumed>) = 1 [pid 317] creat("./bus", 000) = 4 [pid 317] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 315] <... futex resumed>) = 0 [pid 315] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 315] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 317] <... futex resumed>) = 1 [pid 317] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 317] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 315] <... futex resumed>) = 0 [pid 315] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 315] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 317] <... futex resumed>) = 1 [pid 317] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL) = 0 [pid 317] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 315] <... futex resumed>) = 0 [pid 315] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 315] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 317] <... futex resumed>) = 1 [pid 317] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 6 [pid 317] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 315] <... futex resumed>) = 0 [pid 315] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 315] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 317] <... futex resumed>) = 1 [pid 317] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 6, 0) = 0x20000000 [pid 317] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 315] <... futex resumed>) = 0 [pid 315] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 315] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 317] <... futex resumed>) = 1 [pid 317] memfd_create("syzkaller", 0) = 7 [pid 317] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 317] write(7, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 317] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 317] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 8 [pid 317] ioctl(8, LOOP_SET_FD, 7) = -1 EBUSY (Device or resource busy) [pid 317] ioctl(8, LOOP_CLR_FD) = 0 [pid 320] <... futex resumed>) = 0 [pid 320] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 321] <... futex resumed>) = 0 [pid 320] <... futex resumed>) = 1 [pid 321] chdir("./file0" [pid 320] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 321] <... chdir resumed>) = 0 [pid 321] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 320] <... futex resumed>) = 0 [pid 321] creat("./bus", 000 [pid 320] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 321] <... creat resumed>) = 4 [pid 320] <... futex resumed>) = 0 [pid 321] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 320] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 321] <... futex resumed>) = 0 [pid 320] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 321] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 320] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 321] <... openat resumed>) = 5 [pid 320] <... futex resumed>) = 0 [pid 321] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 320] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 321] <... futex resumed>) = 0 [pid 320] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 321] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 320] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 321] <... mount resumed>) = 0 [pid 320] <... futex resumed>) = 0 [pid 321] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 320] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 321] <... futex resumed>) = 0 [pid 320] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 321] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 320] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 321] <... open resumed>) = 6 [pid 320] <... futex resumed>) = 0 [pid 321] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 320] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 321] <... futex resumed>) = 0 [pid 320] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 321] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 6, 0 [pid 320] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 320] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 321] <... mmap resumed>) = 0x20000000 [pid 321] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 320] <... futex resumed>) = 0 [pid 320] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 320] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 321] memfd_create("syzkaller", 0) = 7 [pid 321] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 321] write(7, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 321] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 321] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 8 [pid 321] ioctl(8, LOOP_SET_FD, 7) = -1 EBUSY (Device or resource busy) [pid 321] ioctl(8, LOOP_CLR_FD) = 0 [pid 317] ioctl(8, LOOP_SET_FD, 7) = -1 EBUSY (Device or resource busy) [pid 317] close(8 [pid 321] ioctl(8, LOOP_SET_FD, 7) = -1 EBUSY (Device or resource busy) [pid 321] close(8) = 0 [pid 321] close(7) = 0 [pid 321] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 320] <... futex resumed>) = 0 [pid 320] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 320] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 321] <... futex resumed>) = 1 [pid 321] mknod(0x20000000, 000 [pid 310] exit_group(0) = ? [pid 317] <... close resumed>) = 0 [pid 317] close(7) = 0 [pid 317] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 315] <... futex resumed>) = 0 [pid 315] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 315] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 317] <... futex resumed>) = 1 [pid 317] mknod(0x20000000, 000 [pid 321] <... mknod resumed>) = -1 EUCLEAN (Structure needs cleaning) [pid 321] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 320] <... futex resumed>) = 0 [pid 320] exit_group(0) = ? [pid 321] <... futex resumed>) = ? [pid 321] +++ exited with 0 +++ [pid 320] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=320, si_uid=0, si_status=0, si_utime=0, si_stime=9} --- [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 317] <... mknod resumed>) = -1 EUCLEAN (Structure needs cleaning) [pid 317] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 315] <... futex resumed>) = 0 [pid 315] exit_group(0) = ? [pid 317] <... futex resumed>) = ? [pid 317] +++ exited with 0 +++ [pid 315] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=315, si_uid=0, si_status=0, si_utime=0, si_stime=10} --- executing program [pid 305] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 337 attached [pid 337] set_robust_list(0x5555636e06a0, 24) = 0 [pid 337] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 337] setpgid(0, 0) = 0 [pid 337] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 337] write(3, "1000", 4) = 4 [pid 337] close(3) = 0 [pid 337] write(1, "executing program\n", 18) = 18 [pid 337] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 337] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 337] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 306] <... openat resumed>) = 3 [pid 305] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 305] ioctl(3, LOOP_CLR_FD [pid 306] <... ioctl resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 306] close(3 [pid 305] close(3 [pid 306] <... close resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 340 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 341 [pid 337] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 337] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 337] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 337] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[342]}, 88) = 342 [pid 337] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 337] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 337] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 342 attached [pid 342] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 342] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 342] memfd_create("syzkaller", 0) = 3 [pid 342] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 342] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 342] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 342] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 342] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 342] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 338 attached [pid 338] set_robust_list(0x5555636e06a0, 24) = 0 [pid 338] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 338] setpgid(0, 0) = 0 [pid 338] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 338] write(3, "1000", 4 [pid 342] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 342] close(4) = 0 [pid 342] close(3) = 0 [pid 342] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 337] <... futex resumed>) = 0 [pid 337] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 337] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 338] <... write resumed>) = 4 [pid 342] <... futex resumed>) = 1 [pid 342] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 338] close(3) = 0 [pid 342] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 338] write(1, "executing program\n", 18 [pid 337] <... futex resumed>) = 0 executing program [pid 337] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 337] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 342] <... futex resumed>) = 1 [pid 338] <... write resumed>) = 18 [pid 342] creat("./bus", 000 [pid 338] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 342] <... creat resumed>) = 3 [pid 338] <... futex resumed>) = 0 [pid 338] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 342] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 338] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 337] <... futex resumed>) = 0 [pid 337] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 337] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 338] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 342] <... futex resumed>) = 1 [pid 342] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 338] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 342] <... openat resumed>) = 4 [pid 338] <... mmap resumed>) = 0x7fe6f87b1000 [pid 338] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 338] rt_sigprocmask(SIG_BLOCK, ~[], [pid 342] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 337] <... futex resumed>) = 0 [pid 337] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 337] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 338] <... rt_sigprocmask resumed>[], 8) = 0 [pid 342] <... futex resumed>) = 1 [pid 338] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 342] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL) = 0 [pid 342] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 337] <... futex resumed>) = 0 [pid 337] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 337] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 342] <... futex resumed>) = 1 [pid 342] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 342] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 338] <... clone3 resumed> => {parent_tid=[343]}, 88) = 343 [pid 337] <... futex resumed>) = 0 [pid 337] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 337] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 342] <... futex resumed>) = 1 [pid 338] rt_sigprocmask(SIG_SETMASK, [], [pid 342] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 338] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 342] <... mmap resumed>) = 0x20000000 [pid 338] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 338] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 342] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 337] <... futex resumed>) = 0 [pid 337] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 337] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 342] <... futex resumed>) = 1 [pid 342] memfd_create("syzkaller", 0) = 6 [pid 342] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 342] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 342] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 342] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 7 [pid 342] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 342] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 340 attached [pid 340] set_robust_list(0x5555636e06a0, 24 [pid 342] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 342] close(7) = 0 [pid 342] close(6) = 0 [pid 342] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 337] <... futex resumed>) = 0 [pid 337] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 337] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 342] <... futex resumed>) = 1 [pid 342] mknod(0x20000000, 000) = -1 EEXIST (File exists) [pid 342] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 337] <... futex resumed>) = 0 [pid 337] exit_group(0) = ? [pid 342] <... futex resumed>) = ? [pid 342] +++ exited with 0 +++ [pid 337] +++ exited with 0 +++ [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=337, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 303] ioctl(3, LOOP_CLR_FD) = 0 [pid 303] close(3) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 344 [pid 340] <... set_robust_list resumed>) = 0 [pid 340] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 340] setpgid(0, 0) = 0 [pid 340] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 340] write(3, "1000", 4) = 4 executing program [pid 340] close(3) = 0 [pid 340] write(1, "executing program\n", 18) = 18 [pid 340] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 340] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 340] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 340] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 340] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 340] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 340] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[345]}, 88) = 345 [pid 340] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 340] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 340] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 341 attached [pid 341] set_robust_list(0x5555636e06a0, 24) = 0 [pid 341] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 341] setpgid(0, 0) = 0 [pid 341] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 executing program [pid 341] write(3, "1000", 4) = 4 [pid 341] close(3) = 0 [pid 341] write(1, "executing program\n", 18) = 18 [pid 341] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 341] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 341] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 341] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 341] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 341] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 341] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[346]}, 88) = 346 [pid 341] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 341] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 341] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 346 attached [pid 346] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 346] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 346] memfd_create("syzkaller", 0) = 3 [pid 346] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 346] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 346] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 346] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 346] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 346] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 343 attached [pid 343] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 343] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 343] memfd_create("syzkaller", 0) = 3 [pid 343] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 343] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 346] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 346] close(4) = 0 [pid 346] close(3) = 0 [pid 346] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 341] <... futex resumed>) = 0 [pid 341] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 341] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 346] <... futex resumed>) = 1 [pid 346] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 346] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 341] <... futex resumed>) = 0 [pid 341] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 341] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 346] <... futex resumed>) = 1 [pid 346] creat("./bus", 000) = 3 [pid 346] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 341] <... futex resumed>) = 0 [pid 341] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 341] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 346] <... futex resumed>) = 1 [pid 346] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 346] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 341] <... futex resumed>) = 0 [pid 341] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 341] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 346] <... futex resumed>) = 1 [pid 346] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL) = 0 [pid 346] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 341] <... futex resumed>) = 0 [pid 341] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 341] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 346] <... futex resumed>) = 1 [pid 346] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 346] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 341] <... futex resumed>) = 0 [pid 341] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 341] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 346] <... futex resumed>) = 1 [pid 346] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 346] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 341] <... futex resumed>) = 0 [pid 341] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 341] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 346] <... futex resumed>) = 1 [pid 346] memfd_create("syzkaller", 0) = 6 [pid 346] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 346] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 343] <... write resumed>) = 262144 [pid 343] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 343] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 343] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 343] ioctl(4, LOOP_CLR_FD) = 0 [pid 346] <... write resumed>) = 131072 [pid 346] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 346] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 7 [pid 346] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 346] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 344 attached [pid 343] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 343] close(4) = 0 [pid 343] close(3) = 0 [pid 343] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 338] <... futex resumed>) = 0 [pid 338] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 338] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 343] <... futex resumed>) = 1 [pid 343] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 346] ioctl(7, LOOP_SET_FD, 6 [pid 343] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] set_robust_list(0x5555636e06a0, 24 [pid 338] <... futex resumed>) = 0 [pid 338] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 338] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 346] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 343] <... futex resumed>) = 1 [pid 343] creat("./bus", 000) = 3 [pid 344] <... set_robust_list resumed>) = 0 [pid 346] close(7 [pid 344] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 346] <... close resumed>) = 0 [pid 343] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 346] close(6 [pid 338] <... futex resumed>) = 0 [pid 338] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 338] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 346] <... close resumed>) = 0 [pid 343] <... futex resumed>) = 1 [pid 343] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 344] <... prctl resumed>) = 0 [pid 344] setpgid(0, 0) = 0 [pid 344] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 343] <... openat resumed>) = 4 [pid 343] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] <... openat resumed>) = 3 [pid 338] <... futex resumed>) = 0 [pid 338] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 338] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 343] <... futex resumed>) = 1 [pid 343] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL) = 0 [pid 346] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 341] <... futex resumed>) = 0 [pid 341] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 341] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 344] write(3, "1000", 4 [pid 346] <... futex resumed>) = 1 [pid 346] mknod(0x20000000, 000 [pid 344] <... write resumed>) = 4 [pid 346] <... mknod resumed>) = -1 EEXIST (File exists) executing program [pid 343] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] close(3 [pid 338] <... futex resumed>) = 0 [pid 338] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 338] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 344] <... close resumed>) = 0 [pid 343] <... futex resumed>) = 1 [pid 343] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 344] write(1, "executing program\n", 18 [pid 346] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 341] <... futex resumed>) = 0 [pid 341] exit_group(0) = ? [pid 346] <... futex resumed>) = ? [pid 344] <... write resumed>) = 18 [pid 344] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 343] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 338] <... futex resumed>) = 0 [pid 338] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 338] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 343] <... futex resumed>) = 1 [pid 343] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 344] <... futex resumed>) = 0 [pid 344] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 344] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 344] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 344] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 344] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 343] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 338] <... futex resumed>) = 0 [pid 338] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 338] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 343] <... futex resumed>) = 1 [pid 343] memfd_create("syzkaller", 0) = 6 [pid 344] <... clone3 resumed> => {parent_tid=[347]}, 88) = 347 [pid 344] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 343] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 344] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 343] <... mmap resumed>) = 0x7fe6f03b1000 [pid 344] <... futex resumed>) = 0 [pid 344] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 343] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 346] +++ exited with 0 +++ [pid 341] +++ exited with 0 +++ executing program [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=341, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 343] <... write resumed>) = 131072 [pid 343] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 343] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 7 [pid 343] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 343] ioctl(7, LOOP_CLR_FD) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 305] ioctl(3, LOOP_CLR_FD) = 0 [pid 305] close(3) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 348 [pid 343] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 343] close(7) = 0 [pid 343] close(6) = 0 [pid 343] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 338] <... futex resumed>) = 0 [pid 338] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 338] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 343] <... futex resumed>) = 1 [pid 343] mknod(0x20000000, 000) = -1 EEXIST (File exists) [pid 343] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 338] <... futex resumed>) = 0 [pid 338] exit_group(0) = ? [pid 343] <... futex resumed>) = ? [pid 343] +++ exited with 0 +++ [pid 338] +++ exited with 0 +++ [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=338, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 304] ioctl(3, LOOP_CLR_FD) = 0 [pid 304] close(3) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 349 ./strace-static-x86_64: Process 349 attached [pid 349] set_robust_list(0x5555636e06a0, 24) = 0 [pid 349] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 349] setpgid(0, 0) = 0 [pid 349] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 349] write(3, "1000", 4) = 4 [pid 349] close(3) = 0 [pid 349] write(1, "executing program\n", 18) = 18 [pid 349] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 349] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 349] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 349] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 349] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 349] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 349] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[350]}, 88) = 350 [pid 349] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 349] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 349] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 350 attached [pid 350] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 350] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 350] memfd_create("syzkaller", 0) = 3 [pid 350] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 350] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 350] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 350] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 350] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 350] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 345 attached [pid 345] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 345] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 345] memfd_create("syzkaller", 0) = 3 [pid 345] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 350] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 350] close(4) = 0 [pid 350] close(3) = 0 [pid 345] <... mmap resumed>) = 0x7fe6f03b1000 [pid 345] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 350] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 349] <... futex resumed>) = 0 [pid 349] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 349] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 350] <... futex resumed>) = 1 [pid 350] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 350] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 349] <... futex resumed>) = 0 [pid 349] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 349] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 350] <... futex resumed>) = 1 [pid 350] creat("./bus", 000) = 3 [pid 350] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 349] <... futex resumed>) = 0 [pid 349] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 349] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 350] <... futex resumed>) = 1 [pid 350] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 350] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 349] <... futex resumed>) = 0 [pid 349] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 349] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 350] <... futex resumed>) = 1 [pid 350] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL) = 0 [pid 350] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 349] <... futex resumed>) = 0 [pid 349] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 349] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 350] <... futex resumed>) = 1 [pid 350] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 350] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 349] <... futex resumed>) = 0 [pid 349] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 349] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 350] <... futex resumed>) = 1 [pid 350] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 350] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 349] <... futex resumed>) = 0 [pid 349] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 349] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 350] <... futex resumed>) = 1 [pid 350] memfd_create("syzkaller", 0) = 6 [pid 350] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 350] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 345] <... write resumed>) = 262144 [pid 345] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 345] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 350] <... write resumed>) = 131072 [pid 345] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 345] ioctl(4, LOOP_CLR_FD) = 0 [pid 350] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 350] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 7 [pid 350] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 350] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 347 attached [pid 345] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 345] close(4) = 0 [pid 345] close(3) = 0 [pid 347] set_robust_list(0x7fe6f87d19a0, 24 [pid 350] ioctl(7, LOOP_SET_FD, 6 [pid 347] <... set_robust_list resumed>) = 0 [pid 350] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 347] rt_sigprocmask(SIG_SETMASK, [], [pid 350] close(7 [pid 347] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 350] <... close resumed>) = 0 [pid 347] memfd_create("syzkaller", 0 [pid 350] close(6) = 0 [pid 345] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 340] <... futex resumed>) = 0 [pid 340] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 340] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 345] <... futex resumed>) = 1 [pid 347] <... memfd_create resumed>) = 3 [pid 345] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 345] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 340] <... futex resumed>) = 0 [pid 340] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 340] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 347] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 345] <... futex resumed>) = 1 [pid 347] <... mmap resumed>) = 0x7fe6f03b1000 [pid 345] creat("./bus", 000) = 3 [pid 345] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 340] <... futex resumed>) = 0 [pid 340] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 340] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 345] <... futex resumed>) = 1 [pid 345] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 350] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 349] <... futex resumed>) = 0 [pid 349] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 349] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 350] <... futex resumed>) = 1 [pid 350] mknod(0x20000000, 000) = -1 EEXIST (File exists) [pid 350] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 349] <... futex resumed>) = 0 [pid 349] exit_group(0) = ? [pid 350] <... futex resumed>) = ? [pid 350] +++ exited with 0 +++ [pid 349] +++ exited with 0 +++ [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=349, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 345] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 347] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 340] <... futex resumed>) = 0 [pid 340] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 340] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 345] <... futex resumed>) = 1 [pid 345] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL) = 0 [pid 345] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 340] <... futex resumed>) = 0 [pid 340] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 340] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 345] <... futex resumed>) = 1 [pid 345] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 345] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 340] <... futex resumed>) = 0 [pid 340] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 340] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 345] <... futex resumed>) = 1 [pid 345] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 345] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 340] <... futex resumed>) = 0 [pid 340] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 340] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 345] <... futex resumed>) = 1 [pid 345] memfd_create("syzkaller", 0) = 6 [pid 345] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 304] <... restart_syscall resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 304] ioctl(3, LOOP_CLR_FD) = 0 [pid 304] close(3) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 351 [pid 347] <... write resumed>) = 262144 [pid 345] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 347] munmap(0x7fe6f03b1000, 138412032 [pid 345] munmap(0x7fe6f03b1000, 138412032 [pid 347] <... munmap resumed>) = 0 [pid 345] <... munmap resumed>) = 0 [pid 347] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 345] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 7 [pid 347] ioctl(4, LOOP_SET_FD, 3 [pid 345] ioctl(7, LOOP_SET_FD, 6 [pid 347] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 345] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 347] ioctl(4, LOOP_CLR_FD [pid 345] ioctl(7, LOOP_CLR_FD [pid 347] <... ioctl resumed>) = 0 [pid 345] <... ioctl resumed>) = 0 [pid 345] ioctl(7, LOOP_SET_FD, 6 [pid 347] ioctl(4, LOOP_SET_FD, 3 [pid 345] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 347] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 345] close(7 [pid 347] close(4 [pid 345] <... close resumed>) = 0 [pid 347] <... close resumed>) = 0 [pid 345] close(6 [pid 347] close(3 [pid 345] <... close resumed>) = 0 [pid 347] <... close resumed>) = 0 [pid 345] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 340] <... futex resumed>) = 0 [pid 340] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 340] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 345] <... futex resumed>) = 1 [pid 345] mknod(0x20000000, 000) = -1 EEXIST (File exists) [pid 345] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 340] <... futex resumed>) = 0 [pid 340] exit_group(0) = ? [pid 345] <... futex resumed>) = ? [pid 347] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] <... futex resumed>) = 0 [pid 344] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 344] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 347] <... futex resumed>) = 1 [pid 347] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 347] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] <... futex resumed>) = 0 [pid 344] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 344] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 347] <... futex resumed>) = 1 [pid 345] +++ exited with 0 +++ [pid 340] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=340, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 347] creat("./bus", 000) = 3 [pid 347] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] <... futex resumed>) = 0 [pid 344] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 344] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 347] <... futex resumed>) = 1 [pid 347] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 347] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] <... futex resumed>) = 0 [pid 344] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 344] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 347] <... futex resumed>) = 1 [pid 347] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL) = 0 [pid 347] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] <... futex resumed>) = 0 [pid 344] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 344] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 347] <... futex resumed>) = 1 [pid 347] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 347] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] <... futex resumed>) = 0 [pid 344] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 344] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 347] <... futex resumed>) = 1 [pid 347] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 347] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] <... futex resumed>) = 0 [pid 344] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 344] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 347] <... futex resumed>) = 1 [pid 347] memfd_create("syzkaller", 0) = 6 [pid 306] <... restart_syscall resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 352 [pid 347] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 347] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 347] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 347] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 7 [pid 347] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 347] ioctl(7, LOOP_CLR_FD./strace-static-x86_64: Process 352 attached ) = 0 [pid 352] set_robust_list(0x5555636e06a0, 24) = 0 [pid 352] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 347] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 347] close(7) = 0 [pid 347] close(6) = 0 [pid 352] <... prctl resumed>) = 0 [pid 352] setpgid(0, 0) = 0 [pid 352] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 347] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 352] write(3, "1000", 4executing program [pid 344] <... futex resumed>) = 0 [pid 344] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 344] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 352] <... write resumed>) = 4 [pid 347] <... futex resumed>) = 1 [pid 347] mknod(0x20000000, 000 [pid 352] close(3 [pid 347] <... mknod resumed>) = -1 EEXIST (File exists) [pid 352] <... close resumed>) = 0 [pid 352] write(1, "executing program\n", 18 [pid 347] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 352] <... write resumed>) = 18 [pid 344] <... futex resumed>) = 0 [pid 344] exit_group(0) = ? [pid 352] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 347] <... futex resumed>) = ? [pid 347] +++ exited with 0 +++ [pid 344] +++ exited with 0 +++ [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=344, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 352] <... futex resumed>) = 0 [pid 352] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 352] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 352] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 352] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 352] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 352] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[353]}, 88) = 353 [pid 352] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 352] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 352] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 353 attached [pid 353] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 353] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 353] memfd_create("syzkaller", 0) = 3 [pid 353] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 353] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 303] <... restart_syscall resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 303] ioctl(3, LOOP_CLR_FD) = 0 [pid 303] close(3) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 354 [pid 353] <... write resumed>) = 262144 [pid 353] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 353] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 353] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 353] ioctl(4, LOOP_CLR_FD) = 0 [pid 353] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 353] close(4) = 0 [pid 353] close(3) = 0 [pid 353] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 352] <... futex resumed>) = 0 [pid 352] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 352] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 353] <... futex resumed>) = 1 [pid 353] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 353] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 352] <... futex resumed>) = 0 [pid 352] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 352] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 353] <... futex resumed>) = 1 [pid 353] creat("./bus", 000) = 3 [pid 353] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 352] <... futex resumed>) = 0 [pid 352] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 352] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 353] <... futex resumed>) = 1 [pid 353] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 353] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 352] <... futex resumed>) = 0 [pid 352] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 352] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 353] <... futex resumed>) = 1 [pid 353] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL) = 0 [pid 353] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 352] <... futex resumed>) = 0 [pid 352] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 352] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 353] <... futex resumed>) = 1 [pid 353] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 353] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 352] <... futex resumed>) = 0 [pid 352] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 352] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 353] <... futex resumed>) = 1 [pid 353] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 353] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 352] <... futex resumed>) = 0 [pid 352] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 352] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 353] <... futex resumed>) = 1 [pid 353] memfd_create("syzkaller", 0) = 6 [pid 353] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 executing program [pid 353] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 353] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 353] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 7 [pid 353] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 353] ioctl(7, LOOP_CLR_FD) = 0 [pid 353] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 353] close(7) = 0 [pid 353] close(6) = 0 [pid 353] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 352] <... futex resumed>) = 0 [pid 352] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 352] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 353] <... futex resumed>) = 1 [pid 353] mknod(0x20000000, 000) = -1 EEXIST (File exists) [pid 353] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 352] <... futex resumed>) = 0 [pid 352] exit_group(0) = ? [pid 353] <... futex resumed>) = ? [pid 353] +++ exited with 0 +++ [pid 352] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=352, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 355 ./strace-static-x86_64: Process 355 attached [pid 355] set_robust_list(0x5555636e06a0, 24) = 0 [pid 355] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 355] setpgid(0, 0) = 0 [pid 355] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 355] write(3, "1000", 4) = 4 [pid 355] close(3) = 0 [pid 355] write(1, "executing program\n", 18) = 18 [pid 355] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 355] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 355] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 355] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 355] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 355] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 355] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[356]}, 88) = 356 [pid 355] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 355] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 355] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 356 attached [pid 356] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 356] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 356] memfd_create("syzkaller", 0) = 3 [pid 356] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 356] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 356] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 356] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 356] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 356] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 348 attached [pid 348] set_robust_list(0x5555636e06a0, 24) = 0 [pid 348] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 348] setpgid(0, 0) = 0 [pid 356] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 356] close(4) = 0 [pid 356] close(3) = 0 executing program [pid 348] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 348] write(3, "1000", 4) = 4 [pid 348] close(3) = 0 [pid 348] write(1, "executing program\n", 18) = 18 [pid 348] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 348] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 348] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 348] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 348] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 356] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 348] rt_sigprocmask(SIG_BLOCK, ~[], [pid 355] <... futex resumed>) = 0 [pid 355] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 355] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 356] <... futex resumed>) = 1 [pid 356] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 356] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 355] <... futex resumed>) = 0 [pid 355] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 355] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 356] <... futex resumed>) = 1 [pid 356] creat("./bus", 000 [pid 348] <... rt_sigprocmask resumed>[], 8) = 0 executing program executing program [pid 356] <... creat resumed>) = 3 [pid 348] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 356] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 355] <... futex resumed>) = 0 [pid 355] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 355] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 356] <... futex resumed>) = 1 [pid 356] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 348] <... clone3 resumed> => {parent_tid=[357]}, 88) = 357 [pid 348] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 348] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 348] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 356] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 355] <... futex resumed>) = 0 [pid 355] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 355] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 356] <... futex resumed>) = 1 [pid 356] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL) = 0 [pid 356] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 355] <... futex resumed>) = 0 [pid 355] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 355] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 356] <... futex resumed>) = 1 [pid 356] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 356] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 355] <... futex resumed>) = 0 [pid 355] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 355] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 356] <... futex resumed>) = 1 [pid 356] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 356] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 355] <... futex resumed>) = 0 [pid 355] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 355] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 356] <... futex resumed>) = 1 [pid 356] memfd_create("syzkaller", 0) = 6 [pid 356] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 356] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 356] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 356] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 7 [pid 356] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 356] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 351 attached [pid 351] set_robust_list(0x5555636e06a0, 24) = 0 [pid 351] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 351] setpgid(0, 0) = 0 [pid 351] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 351] write(3, "1000", 4) = 4 [pid 356] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 356] close(7) = 0 [pid 356] close(6) = 0 [pid 356] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 355] <... futex resumed>) = 0 [pid 355] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 355] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 356] <... futex resumed>) = 1 [pid 356] mknod(0x20000000, 000) = -1 EEXIST (File exists) [pid 351] close(3) = 0 [pid 356] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 351] write(1, "executing program\n", 18 [pid 355] <... futex resumed>) = 0 [pid 355] exit_group(0) = ? [pid 351] <... write resumed>) = 18 [pid 356] <... futex resumed>) = ? [pid 351] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 351] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 351] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 351] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 351] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 351] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 351] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[358]}, 88) = 358 [pid 351] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 351] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 351] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 356] +++ exited with 0 +++ [pid 355] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=355, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 359 ./strace-static-x86_64: Process 359 attached [pid 359] set_robust_list(0x5555636e06a0, 24) = 0 [pid 359] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 359] setpgid(0, 0) = 0 [pid 359] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 359] write(3, "1000", 4) = 4 [pid 359] close(3) = 0 [pid 359] write(1, "executing program\n", 18) = 18 [pid 359] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 359] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 359] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 359] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 ./strace-static-x86_64: Process 354 attached ./strace-static-x86_64: Process 357 attached ./strace-static-x86_64: Process 358 attached [pid 354] set_robust_list(0x5555636e06a0, 24 [pid 358] set_robust_list(0x7fe6f87d19a0, 24 [pid 357] set_robust_list(0x7fe6f87d19a0, 24 [pid 354] <... set_robust_list resumed>) = 0 [pid 358] <... set_robust_list resumed>) = 0 [pid 357] <... set_robust_list resumed>) = 0 [pid 354] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 358] rt_sigprocmask(SIG_SETMASK, [], [pid 357] rt_sigprocmask(SIG_SETMASK, [], [pid 354] <... prctl resumed>) = 0 [pid 358] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 357] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 354] setpgid(0, 0 [pid 358] memfd_create("syzkaller", 0 [pid 357] memfd_create("syzkaller", 0 [pid 354] <... setpgid resumed>) = 0 [pid 358] <... memfd_create resumed>) = 3 [pid 354] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 357] <... memfd_create resumed>) = 3 [pid 358] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 357] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 354] <... openat resumed>) = 3 [pid 358] <... mmap resumed>) = 0x7fe6f03b1000 [pid 357] <... mmap resumed>) = 0x7fe6f03b1000 [pid 354] write(3, "1000", 4 [pid 359] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 359] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 359] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[361]}, 88) = 361 [pid 359] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 359] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 359] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 358] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 357] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 354] <... write resumed>) = 4 [pid 358] <... write resumed>) = 262144 [pid 354] close(3 [pid 357] <... write resumed>) = 262144 [pid 358] munmap(0x7fe6f03b1000, 138412032 [pid 357] munmap(0x7fe6f03b1000, 138412032 [pid 354] <... close resumed>) = 0 [pid 354] write(1, "executing program\n", 18executing program ) = 18 [pid 354] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 357] <... munmap resumed>) = 0 [pid 354] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 358] <... munmap resumed>) = 0 [pid 357] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 354] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], ./strace-static-x86_64: Process 361 attached [pid 361] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 361] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 361] memfd_create("syzkaller", 0) = 3 [pid 361] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 361] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 361] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 361] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [ 34.382444][ T312] ^ [ 34.386355][ T312] ffff88810d5a6980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 34.394252][ T312] ffff88810d5a6a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.402148][ T312] ================================================================== [ 34.410045][ T312] Disabling lock debugging due to kernel taint [pid 361] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 361] ioctl(4, LOOP_CLR_FD) = 0 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 358] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 358] ioctl(4, LOOP_CLR_FD) = 0 [pid 357] <... openat resumed>) = 4 [pid 357] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 357] ioctl(4, LOOP_CLR_FD) = 0 [pid 354] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 354] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 354] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 354] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 354] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[362]}, 88) = 362 [pid 354] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 354] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 354] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 358] ioctl(4, LOOP_SET_FD, 3 [pid 357] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 357] close(4) = 0 [pid 358] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 357] close(3) = 0 [pid 358] close(4) = 0 [pid 358] close(3) = 0 [pid 357] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 348] <... futex resumed>) = 0 [pid 348] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 348] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 358] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... futex resumed>) = 1 [pid 351] <... futex resumed>) = 0 [pid 351] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 351] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 357] chdir("./file0" [pid 358] <... futex resumed>) = 1 [pid 357] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 358] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 357] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 348] <... futex resumed>) = 0 [pid 348] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 348] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 358] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... futex resumed>) = 1 [pid 351] <... futex resumed>) = 0 [pid 351] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 351] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 357] creat("./bus", 000 [pid 358] <... futex resumed>) = 1 [pid 357] <... creat resumed>) = 3 [pid 358] creat("./bus", 000) = 3 [pid 358] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 351] <... futex resumed>) = 0 [pid 351] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 351] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 348] <... futex resumed>) = 0 [pid 348] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 348] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 358] <... futex resumed>) = 1 [pid 357] <... futex resumed>) = 1 [pid 358] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 357] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 358] <... openat resumed>) = 4 [pid 357] <... openat resumed>) = 4 [pid 357] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 348] <... futex resumed>) = 0 [pid 348] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 348] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 357] <... futex resumed>) = 1 [pid 357] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL) = 0 [pid 358] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 351] <... futex resumed>) = 0 [pid 351] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 351] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 358] <... futex resumed>) = 1 [pid 357] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 358] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 357] <... futex resumed>) = 1 [pid 348] <... futex resumed>) = 0 [pid 348] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 348] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 358] <... mount resumed>) = 0 [pid 357] open("./bus", O_RDWR|O_SYNC|O_DIRECT./strace-static-x86_64: Process 362 attached [pid 358] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... open resumed>) = 5 [pid 362] set_robust_list(0x7fe6f87d19a0, 24 [pid 361] ioctl(4, LOOP_SET_FD, 3 [pid 358] <... futex resumed>) = 1 [pid 357] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 351] <... futex resumed>) = 0 [pid 312] <... mknod resumed>) = ? [pid 358] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 357] <... futex resumed>) = 1 [pid 351] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 348] <... futex resumed>) = 0 [pid 362] <... set_robust_list resumed>) = 0 [pid 361] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 358] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 357] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 351] <... futex resumed>) = 0 [pid 362] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 362] memfd_create("syzkaller", 0 [pid 361] close(4) = 0 [pid 361] close(3) = 0 [pid 362] <... memfd_create resumed>) = 3 [pid 362] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 362] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 348] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 351] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 348] <... futex resumed>) = 0 [pid 357] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 358] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 357] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 348] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 312] +++ exited with 0 +++ [pid 361] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] +++ exited with 0 +++ [pid 362] <... write resumed>) = 262144 [pid 361] <... futex resumed>) = 1 [pid 359] <... futex resumed>) = 0 [pid 358] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... mmap resumed>) = 0x20000000 [pid 361] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 359] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 358] <... futex resumed>) = 1 [pid 357] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 351] <... futex resumed>) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=310, si_uid=0, si_status=0, si_utime=0, si_stime=6} --- [pid 361] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 359] <... futex resumed>) = 0 [pid 358] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 357] <... futex resumed>) = 1 [pid 351] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 348] <... futex resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 361] chdir("./file0" [pid 359] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 358] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 357] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 351] <... futex resumed>) = 0 [pid 348] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 362] munmap(0x7fe6f03b1000, 138412032 [pid 358] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 357] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 351] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 348] <... futex resumed>) = 0 [pid 362] <... munmap resumed>) = 0 [pid 358] <... mmap resumed>) = 0x20000000 [pid 348] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 358] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] memfd_create("syzkaller", 0 [pid 358] <... futex resumed>) = 1 [pid 351] <... futex resumed>) = 0 [pid 362] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 357] <... memfd_create resumed>) = 6 [pid 351] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 358] memfd_create("syzkaller", 0 [pid 357] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 351] <... futex resumed>) = 0 [pid 358] <... memfd_create resumed>) = 6 [pid 357] <... mmap resumed>) = 0x7fe6f03b1000 [pid 358] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 351] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 362] <... openat resumed>) = 4 [pid 362] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 362] ioctl(4, LOOP_CLR_FD) = 0 [pid 361] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 361] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 361] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 358] <... mmap resumed>) = 0x7fe6f03b1000 [pid 359] <... futex resumed>) = 0 [pid 357] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 359] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... write resumed>) = 131072 [pid 361] <... futex resumed>) = 0 [pid 359] <... futex resumed>) = 1 [pid 357] munmap(0x7fe6f03b1000, 138412032 [pid 361] creat("./bus", 000 [pid 359] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 357] <... munmap resumed>) = 0 [pid 361] <... creat resumed>) = 3 [pid 357] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 361] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... openat resumed>) = 7 [pid 361] <... futex resumed>) = 1 [pid 359] <... futex resumed>) = 0 [pid 358] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 357] ioctl(7, LOOP_SET_FD, 6 [pid 361] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 359] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 359] <... futex resumed>) = 0 [pid 357] ioctl(7, LOOP_CLR_FD [pid 361] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 359] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 357] <... ioctl resumed>) = 0 [pid 361] <... openat resumed>) = 4 [pid 361] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 359] <... futex resumed>) = 0 [pid 361] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 359] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 361] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 359] <... futex resumed>) = 0 [pid 361] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 359] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 361] <... mount resumed>) = 0 [pid 361] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 359] <... futex resumed>) = 0 [pid 361] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 359] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 361] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 359] <... futex resumed>) = 0 [pid 361] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 359] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 361] <... open resumed>) = 5 [pid 361] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 359] <... futex resumed>) = 0 [pid 361] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 359] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 361] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 359] <... futex resumed>) = 0 [pid 361] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 359] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 361] <... mmap resumed>) = 0x20000000 [pid 361] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] ioctl(7, LOOP_SET_FD, 6 [pid 361] <... futex resumed>) = 1 [pid 359] <... futex resumed>) = 0 [pid 357] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 359] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] close(7 [pid 361] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 359] <... futex resumed>) = 0 [pid 357] <... close resumed>) = 0 [pid 361] memfd_create("syzkaller", 0 [pid 359] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 358] <... write resumed>) = 131072 [pid 357] close(6 [pid 361] <... memfd_create resumed>) = 6 [pid 357] <... close resumed>) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 361] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 357] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 361] <... mmap resumed>) = 0x7fe6f03b1000 [pid 357] <... futex resumed>) = 1 [pid 348] <... futex resumed>) = 0 [pid 361] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 358] munmap(0x7fe6f03b1000, 138412032 [pid 357] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 348] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 361] <... write resumed>) = 131072 [pid 358] <... munmap resumed>) = 0 [pid 357] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 348] <... futex resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 361] munmap(0x7fe6f03b1000, 138412032 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 357] mknod(0x20000000, 000 [pid 348] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] ioctl(3, LOOP_CLR_FD [pid 361] <... munmap resumed>) = 0 [pid 358] <... openat resumed>) = 7 [pid 357] <... mknod resumed>) = -1 EEXIST (File exists) [pid 302] <... ioctl resumed>) = 0 [pid 361] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 357] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] close(3 [pid 358] ioctl(7, LOOP_SET_FD, 6 [pid 361] <... openat resumed>) = 7 [pid 357] <... futex resumed>) = 1 [pid 348] <... futex resumed>) = 0 [pid 302] <... close resumed>) = 0 [pid 361] ioctl(7, LOOP_SET_FD, 6 [pid 358] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 357] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 348] exit_group(0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 361] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 358] ioctl(7, LOOP_CLR_FD [pid 357] <... futex resumed>) = ? [pid 348] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 363 attached [pid 361] ioctl(7, LOOP_CLR_FD [pid 358] <... ioctl resumed>) = 0 [pid 357] +++ exited with 0 +++ [pid 348] +++ exited with 0 +++ [pid 363] set_robust_list(0x5555636e06a0, 24 [pid 362] ioctl(4, LOOP_SET_FD, 3 [pid 363] <... set_robust_list resumed>) = 0 [pid 362] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 363] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 362] close(4 [pid 363] <... prctl resumed>) = 0 [pid 362] <... close resumed>) = 0 [pid 363] setpgid(0, 0 [pid 362] close(3 [pid 358] ioctl(7, LOOP_SET_FD, 6 [pid 363] <... setpgid resumed>) = 0 [pid 362] <... close resumed>) = 0 [pid 358] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 363 [pid 363] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 362] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 358] close(7 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=348, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [ 34.427942][ T312] EXT4-fs error (device loop0): ext4_find_dest_de:2077: inode #12: block 7: comm syz-executor347: bad entry in directory: directory entry overrun - offset=0, inode=1793120026, rec_len=34652, size=56 fake=0 [pid 363] <... openat resumed>) = 3 [pid 362] <... futex resumed>) = 1 [pid 358] <... close resumed>) = 0 [pid 354] <... futex resumed>) = 0 [pid 363] write(3, "1000", 4 [pid 362] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 358] close(6 [pid 354] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 363] <... write resumed>) = 4 [pid 362] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 358] <... close resumed>) = 0 [pid 354] <... futex resumed>) = 0 [pid 363] close(3 [pid 362] chdir("./file0" [pid 361] <... ioctl resumed>) = 0 [pid 358] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 354] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 363] <... close resumed>) = 0 [pid 362] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 358] <... futex resumed>) = 1 [pid 351] <... futex resumed>) = 0 [pid 363] write(1, "executing program\n", 18executing program [pid 362] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 358] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 351] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... openat resumed>) = 3 [pid 363] <... write resumed>) = 18 [pid 362] <... futex resumed>) = 1 [pid 358] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 354] <... futex resumed>) = 0 [pid 351] <... futex resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 363] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 362] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 361] ioctl(7, LOOP_SET_FD, 6 [pid 358] mknod(0x20000000, 000 [pid 354] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 351] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... ioctl resumed>) = 0 [pid 363] <... futex resumed>) = 0 [pid 362] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 361] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 358] <... mknod resumed>) = -1 EEXIST (File exists) [pid 354] <... futex resumed>) = 0 [pid 305] close(3 [pid 363] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 362] creat("./bus", 000 [pid 361] close(7 [pid 358] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 354] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... close resumed>) = 0 [pid 363] <... rt_sigaction resumed>NULL, 8) = 0 [pid 362] <... creat resumed>) = 3 [pid 361] <... close resumed>) = 0 [pid 358] <... futex resumed>) = 1 [pid 351] <... futex resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 363] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 362] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 361] close(6 [pid 358] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 351] exit_group(0 [pid 363] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 362] <... futex resumed>) = 1 [pid 354] <... futex resumed>) = 0 [pid 363] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 362] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 354] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 363] <... mmap resumed>) = 0x7fe6f87b1000 [pid 362] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 358] <... futex resumed>) = ? [pid 354] <... futex resumed>) = 0 [pid 351] <... exit_group resumed>) = ? [pid 363] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 362] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 358] +++ exited with 0 +++ [pid 354] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 363] <... mprotect resumed>) = 0 [pid 362] <... openat resumed>) = 4 [pid 363] rt_sigprocmask(SIG_BLOCK, ~[], [pid 362] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 363] <... rt_sigprocmask resumed>[], 8) = 0 [pid 362] <... futex resumed>) = 1 [pid 354] <... futex resumed>) = 0 [pid 351] +++ exited with 0 +++ [pid 363] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 362] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 361] <... close resumed>) = 0 [pid 354] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 364 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=351, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 362] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 361] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 354] <... futex resumed>) = 0 [pid 363] <... clone3 resumed> => {parent_tid=[365]}, 88) = 365 [pid 362] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 361] <... futex resumed>) = 1 [pid 359] <... futex resumed>) = 0 [pid 354] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 363] rt_sigprocmask(SIG_SETMASK, [], [pid 362] <... mount resumed>) = 0 [pid 361] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 359] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 363] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 362] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 361] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 359] <... futex resumed>) = 0 [pid 363] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 362] <... futex resumed>) = 1 [pid 361] mknod(0x20000000, 000 [pid 359] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 354] <... futex resumed>) = 0 [pid 363] <... futex resumed>) = 0 [pid 362] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 361] <... mknod resumed>) = -1 EEXIST (File exists) [pid 354] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 363] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 362] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 361] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 354] <... futex resumed>) = 0 [pid 362] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 361] <... futex resumed>) = 1 [pid 359] <... futex resumed>) = 0 [pid 354] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 362] <... open resumed>) = 5 [pid 361] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 359] exit_group(0 [pid 362] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 361] <... futex resumed>) = ? [pid 359] <... exit_group resumed>) = ? [pid 354] <... futex resumed>) = 0 [pid 362] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 354] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 362] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 354] <... futex resumed>) = 0 [pid 362] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 354] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 362] <... mmap resumed>) = 0x20000000 [pid 362] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 354] <... futex resumed>) = 0 [pid 362] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 354] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 364 attached [pid 362] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 354] <... futex resumed>) = 0 [pid 364] set_robust_list(0x5555636e06a0, 24 [pid 362] memfd_create("syzkaller", 0 [pid 354] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 364] <... set_robust_list resumed>) = 0 [pid 362] <... memfd_create resumed>) = 6 [pid 361] +++ exited with 0 +++ [pid 359] +++ exited with 0 +++ [pid 364] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 362] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 364] <... prctl resumed>) = 0 [pid 362] <... mmap resumed>) = 0x7fe6f03b1000 [pid 364] setpgid(0, 0 [pid 362] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=359, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 365 attached [pid 364] <... setpgid resumed>) = 0 [pid 362] <... write resumed>) = 131072 [pid 364] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 362] munmap(0x7fe6f03b1000, 138412032 [pid 364] <... openat resumed>) = 3 [pid 362] <... munmap resumed>) = 0 [pid 364] write(3, "1000", 4 [pid 362] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 364] <... write resumed>) = 4 [pid 362] <... openat resumed>) = 7 [pid 364] close(3 [pid 362] ioctl(7, LOOP_SET_FD, 6 [pid 364] <... close resumed>) = 0 [pid 362] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) executing program [pid 364] write(1, "executing program\n", 18 [pid 362] ioctl(7, LOOP_CLR_FD [pid 364] <... write resumed>) = 18 [pid 362] <... ioctl resumed>) = 0 [pid 364] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 365] set_robust_list(0x7fe6f87d19a0, 24 [pid 364] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 306] <... restart_syscall resumed>) = 0 [pid 364] <... rt_sigaction resumed>NULL, 8) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 364] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 306] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 364] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 364] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 306] close(3) = 0 [pid 364] <... mmap resumed>) = 0x7fe6f87b1000 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 364] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 362] ioctl(7, LOOP_SET_FD, 6 [pid 364] rt_sigprocmask(SIG_BLOCK, ~[], [pid 362] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 364] <... rt_sigprocmask resumed>[], 8) = 0 [pid 362] close(7 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 366 [pid 364] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 362] <... close resumed>) = 0 [pid 365] <... set_robust_list resumed>) = 0 [pid 362] close(6 [pid 365] rt_sigprocmask(SIG_SETMASK, [], [pid 364] <... clone3 resumed> => {parent_tid=[367]}, 88) = 367 [pid 362] <... close resumed>) = 0 [pid 364] rt_sigprocmask(SIG_SETMASK, [], [pid 362] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 364] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 362] <... futex resumed>) = 1 [pid 354] <... futex resumed>) = 0 [pid 364] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 362] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 354] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... openat resumed>) = 3 [pid 364] <... futex resumed>) = 0 [pid 362] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 354] <... futex resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 364] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 362] mknod(0x20000000, 000 [pid 354] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... ioctl resumed>) = 0 [pid 362] <... mknod resumed>) = -1 EEXIST (File exists) [pid 365] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 362] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] close(3 [pid 362] <... futex resumed>) = 1 [pid 354] <... futex resumed>) = 0 [pid 365] memfd_create("syzkaller", 0 [pid 362] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 354] exit_group(0 [pid 304] <... close resumed>) = 0 [pid 362] <... futex resumed>) = ? [pid 354] <... exit_group resumed>) = ? [pid 365] <... memfd_create resumed>) = 3 [pid 362] +++ exited with 0 +++ [pid 354] +++ exited with 0 +++ [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 366 attached [pid 366] set_robust_list(0x5555636e06a0, 24) = 0 [pid 366] prctl(PR_SET_PDEATHSIG, SIGKILL executing program [pid 365] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 368 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=354, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 366] <... prctl resumed>) = 0 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 365] <... mmap resumed>) = 0x7fe6f03b1000 [pid 366] setpgid(0, 0) = 0 [pid 366] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 366] write(3, "1000", 4) = 4 [pid 366] close(3) = 0 [pid 366] write(1, "executing program\n", 18) = 18 [pid 366] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 366] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 366] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 366] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 366] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 366] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 366] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[369]}, 88) = 369 [pid 366] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 366] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 365] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 366] <... futex resumed>) = 0 [pid 366] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 368 attached [pid 368] set_robust_list(0x5555636e06a0, 24) = 0 [pid 368] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 368] setpgid(0, 0) = 0 [pid 368] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 368] write(3, "1000", 4) = 4 [pid 365] <... write resumed>) = 262144 executing program [pid 368] close(3) = 0 [pid 368] write(1, "executing program\n", 18) = 18 [pid 368] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 365] munmap(0x7fe6f03b1000, 138412032 [pid 368] <... futex resumed>) = 0 [pid 368] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 368] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 368] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 368] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 368] rt_sigprocmask(SIG_BLOCK, ~[], [pid 365] <... munmap resumed>) = 0 [pid 368] <... rt_sigprocmask resumed>[], 8) = 0 [pid 368] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 365] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 368] <... clone3 resumed> => {parent_tid=[370]}, 88) = 370 [pid 368] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 368] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 368] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 370 attached [pid 370] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 370] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 370] memfd_create("syzkaller", 0) = 3 [pid 370] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 303] <... restart_syscall resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 303] ioctl(3, LOOP_CLR_FD) = 0 [pid 303] close(3) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 371 [pid 365] <... openat resumed>) = 4 [pid 365] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 365] ioctl(4, LOOP_CLR_FD) = 0 [pid 370] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 367 attached [pid 367] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 365] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 367] rt_sigprocmask(SIG_SETMASK, [], [pid 365] close(4 [pid 367] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 365] <... close resumed>) = 0 [pid 367] memfd_create("syzkaller", 0 [pid 365] close(3./strace-static-x86_64: Process 371 attached [pid 370] <... write resumed>) = 262144 [pid 371] set_robust_list(0x5555636e06a0, 24 [pid 365] <... close resumed>) = 0 [pid 371] <... set_robust_list resumed>) = 0 [pid 371] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 365] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] <... prctl resumed>) = 0 [pid 365] <... futex resumed>) = 1 [pid 363] <... futex resumed>) = 0 [pid 365] chdir("./file0" [pid 363] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 371] setpgid(0, 0 [pid 365] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 363] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 371] <... setpgid resumed>) = 0 [pid 365] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 363] <... futex resumed>) = 0 [pid 367] <... memfd_create resumed>) = 3 [pid 363] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 365] creat("./bus", 000 [pid 363] <... futex resumed>) = 0 [pid 370] munmap(0x7fe6f03b1000, 138412032 [pid 363] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 365] <... creat resumed>) = 3 [pid 370] <... munmap resumed>) = 0 [pid 367] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 365] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 365] <... futex resumed>) = 1 [pid 363] <... futex resumed>) = 0 [pid 363] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 365] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 363] <... futex resumed>) = 0 [pid 363] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 371] <... openat resumed>) = 3 [pid 365] <... openat resumed>) = 4 [pid 371] write(3, "1000", 4 [pid 370] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 371] <... write resumed>) = 4 [pid 370] <... openat resumed>) = 4 [pid 371] close(3) = 0 [pid 371] write(1, "executing program\n", 18executing program [pid 370] ioctl(4, LOOP_SET_FD, 3 [pid 371] <... write resumed>) = 18 [pid 370] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 365] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 367] <... mmap resumed>) = 0x7fe6f03b1000 [pid 365] <... futex resumed>) = 1 [pid 363] <... futex resumed>) = 0 [pid 365] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 363] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 365] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 363] <... futex resumed>) = 0 [pid 370] ioctl(4, LOOP_CLR_FD [pid 365] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 363] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 370] <... ioctl resumed>) = 0 [pid 365] <... mount resumed>) = 0 [pid 371] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 371] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 371] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 371] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 371] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 365] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 363] <... futex resumed>) = 0 [pid 365] <... futex resumed>) = 1 [pid 363] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 365] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 363] <... futex resumed>) = 0 [pid 370] ioctl(4, LOOP_SET_FD, 3 [pid 363] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 365] <... open resumed>) = 5 [pid 370] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 365] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 370] close(4 [pid 365] <... futex resumed>) = 1 [pid 363] <... futex resumed>) = 0 [pid 365] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 363] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 365] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 363] <... futex resumed>) = 0 [pid 365] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 363] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 370] <... close resumed>) = 0 [pid 370] close(3 [pid 365] <... mmap resumed>) = 0x20000000 [pid 365] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 363] <... futex resumed>) = 0 [pid 363] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 363] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 365] memfd_create("syzkaller", 0 [pid 371] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 371] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[372]}, 88) = 372 [pid 365] <... memfd_create resumed>) = 6 [pid 371] rt_sigprocmask(SIG_SETMASK, [], [pid 365] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 371] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 365] <... mmap resumed>) = 0x7fe6f03b1000 [pid 371] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 371] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 370] <... close resumed>) = 0 [pid 370] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] <... futex resumed>) = 0 [pid 368] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 368] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 370] <... futex resumed>) = 1 [pid 370] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 370] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] <... futex resumed>) = 0 [pid 368] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 368] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 370] <... futex resumed>) = 1 [pid 370] creat("./bus", 000) = 3 [pid 370] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] <... futex resumed>) = 0 [pid 368] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 365] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 368] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 370] <... futex resumed>) = 1 [pid 370] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 370] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] <... futex resumed>) = 0 [pid 368] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 368] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 365] <... write resumed>) = 131072 [pid 370] <... futex resumed>) = 1 [pid 370] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL) = 0 [pid 370] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] <... futex resumed>) = 0 [pid 368] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 368] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 370] <... futex resumed>) = 1 [pid 370] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 370] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] <... futex resumed>) = 0 [pid 368] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 368] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 370] <... futex resumed>) = 1 [pid 370] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 370] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] <... futex resumed>) = 0 [pid 368] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 367] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 368] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 365] munmap(0x7fe6f03b1000, 138412032 [pid 370] <... futex resumed>) = 1 [pid 370] memfd_create("syzkaller", 0) = 6 [pid 370] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 370] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 370] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 370] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 7 [pid 370] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 370] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 372 attached [pid 372] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 372] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 372] memfd_create("syzkaller", 0) = 3 [pid 372] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 370] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 370] close(7) = 0 [pid 370] close(6 [pid 365] <... munmap resumed>) = 0 [pid 365] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 370] <... close resumed>) = 0 [pid 370] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] <... futex resumed>) = 0 [pid 368] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 368] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 370] <... futex resumed>) = 1 [pid 370] mknod(0x20000000, 000) = -1 EEXIST (File exists) [pid 370] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] <... futex resumed>) = 0 [pid 368] exit_group(0) = ? [pid 370] <... futex resumed>) = ? [pid 370] +++ exited with 0 +++ [pid 368] +++ exited with 0 +++ [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=368, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 365] <... openat resumed>) = 7 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 365] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 369 attached [pid 365] ioctl(7, LOOP_CLR_FD) = 0 [pid 369] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 367] <... write resumed>) = 262144 [pid 369] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 367] munmap(0x7fe6f03b1000, 138412032 [pid 372] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 369] memfd_create("syzkaller", 0) = 3 [pid 365] ioctl(7, LOOP_SET_FD, 6 [pid 369] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 367] <... munmap resumed>) = 0 [pid 365] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 369] <... mmap resumed>) = 0x7fe6f03b1000 [pid 367] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 365] close(7) = 0 [pid 372] <... write resumed>) = 262144 [pid 372] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 372] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 372] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 372] ioctl(4, LOOP_CLR_FD) = 0 [pid 369] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 365] close(6) = 0 [pid 367] <... openat resumed>) = 4 [pid 365] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 372] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 372] close(4) = 0 [pid 367] ioctl(4, LOOP_SET_FD, 3 [pid 365] <... futex resumed>) = 1 [pid 363] <... futex resumed>) = 0 [pid 365] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 363] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 372] close(3 [pid 365] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 363] <... futex resumed>) = 0 [pid 367] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 363] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 365] mknod(0x20000000, 000 [pid 367] ioctl(4, LOOP_CLR_FD [pid 365] <... mknod resumed>) = -1 EEXIST (File exists) [pid 367] <... ioctl resumed>) = 0 [pid 365] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 363] <... futex resumed>) = 0 [pid 365] <... futex resumed>) = 1 [pid 365] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 363] exit_group(0) = ? [pid 365] <... futex resumed>) = ? [pid 372] <... close resumed>) = 0 [pid 372] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] <... futex resumed>) = 0 [pid 365] +++ exited with 0 +++ [pid 363] +++ exited with 0 +++ [pid 371] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=363, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 371] <... futex resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 371] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 372] <... futex resumed>) = 1 [pid 372] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 372] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] <... futex resumed>) = 0 [pid 371] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 371] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 372] <... futex resumed>) = 1 [pid 372] creat("./bus", 000) = 3 [pid 372] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] <... futex resumed>) = 0 [pid 369] <... write resumed>) = 262144 [pid 371] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 367] ioctl(4, LOOP_SET_FD, 3 [pid 371] <... futex resumed>) = 0 [pid 371] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 372] <... futex resumed>) = 1 [pid 372] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 367] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] <... restart_syscall resumed>) = 0 [pid 367] close(4 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 367] <... close resumed>) = 0 [pid 367] close(3 [pid 304] <... openat resumed>) = 3 [pid 304] ioctl(3, LOOP_CLR_FD) = 0 [pid 304] close(3) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 372] <... openat resumed>) = 4 [pid 372] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] <... futex resumed>) = 0 [pid 371] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 371] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 372] <... futex resumed>) = 1 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 373 [pid 372] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL) = 0 [pid 367] <... close resumed>) = 0 [pid 372] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] <... futex resumed>) = 0 [pid 371] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 371] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 373 attached [pid 372] <... futex resumed>) = 1 [pid 369] munmap(0x7fe6f03b1000, 138412032 [pid 367] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 372] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 372] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 367] <... futex resumed>) = 1 [pid 364] <... futex resumed>) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 369] <... munmap resumed>) = 0 [pid 364] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 367] chdir("./file0" [pid 364] <... futex resumed>) = 0 [pid 369] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 364] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 367] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 369] <... openat resumed>) = 4 [pid 367] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 369] ioctl(4, LOOP_SET_FD, 3 [pid 371] <... futex resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 369] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 367] <... futex resumed>) = 1 [pid 364] <... futex resumed>) = 0 [pid 373] set_robust_list(0x5555636e06a0, 24 [pid 371] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 369] ioctl(4, LOOP_CLR_FD [pid 367] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 364] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] ioctl(3, LOOP_CLR_FD [pid 371] <... futex resumed>) = 0 [pid 369] <... ioctl resumed>) = 0 [pid 367] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 364] <... futex resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 371] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 367] creat("./bus", 000 [pid 364] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] close(3 [pid 372] <... futex resumed>) = 1 [pid 367] <... creat resumed>) = 3 [pid 302] <... close resumed>) = 0 [pid 367] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 372] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 367] <... futex resumed>) = 1 [pid 364] <... futex resumed>) = 0 [pid 364] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 374 [pid 367] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 364] <... futex resumed>) = 0 [pid 364] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 372] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] <... futex resumed>) = 0 [pid 371] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 367] <... openat resumed>) = 4 [pid 371] <... futex resumed>) = 0 [pid 371] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 372] <... futex resumed>) = 1 [pid 372] memfd_create("syzkaller", 0 [pid 373] <... set_robust_list resumed>) = 0 [pid 367] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 369] ioctl(4, LOOP_SET_FD, 3 [pid 364] <... futex resumed>) = 0 [pid 367] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 364] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 369] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 367] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 364] <... futex resumed>) = 0 [pid 369] close(4 [pid 367] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 364] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 369] <... close resumed>) = 0 [pid 367] <... mount resumed>) = 0 [pid 372] <... memfd_create resumed>) = 6 [pid 369] close(3 [pid 367] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 372] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 369] <... close resumed>) = 0 [pid 367] <... futex resumed>) = 1 [pid 364] <... futex resumed>) = 0 [pid 369] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 367] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 364] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 369] <... futex resumed>) = 1 [pid 367] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 366] <... futex resumed>) = 0 [pid 364] <... futex resumed>) = 0 [pid 373] <... prctl resumed>) = 0 [pid 369] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 367] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 366] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 364] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 373] setpgid(0, 0 [pid 369] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 367] <... open resumed>) = 5 [pid 366] <... futex resumed>) = 0 [pid 373] <... setpgid resumed>) = 0 [pid 369] chdir("./file0" [pid 367] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 366] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 369] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 367] <... futex resumed>) = 1 [pid 364] <... futex resumed>) = 0 [pid 373] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 369] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 367] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 364] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] <... openat resumed>) = 3 [pid 372] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 369] <... futex resumed>) = 1 [pid 367] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 366] <... futex resumed>) = 0 [pid 364] <... futex resumed>) = 0 [pid 373] write(3, "1000", 4 [pid 369] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 367] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 366] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 364] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 369] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 366] <... futex resumed>) = 0 [pid 366] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 373] <... write resumed>) = 4 [pid 369] creat("./bus", 000 [pid 367] <... mmap resumed>) = 0x20000000 [pid 373] close(3 [pid 372] <... write resumed>) = 131072 [pid 369] <... creat resumed>) = 3 [pid 367] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 369] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] <... close resumed>) = 0 [pid 367] <... futex resumed>) = 1 [pid 364] <... futex resumed>) = 0 [pid 369] <... futex resumed>) = 1 [pid 366] <... futex resumed>) = 0 [pid 373] write(1, "executing program\n", 18 executing program [pid 367] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 366] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 364] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] <... write resumed>) = 18 [pid 369] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 367] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 366] <... futex resumed>) = 0 [pid 364] <... futex resumed>) = 0 [pid 369] <... openat resumed>) = 4 [pid 366] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 364] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 373] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 369] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 367] memfd_create("syzkaller", 0 [pid 366] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ./strace-static-x86_64: Process 374 attached [pid 373] <... futex resumed>) = 0 [pid 369] <... futex resumed>) = 0 [pid 367] <... memfd_create resumed>) = 6 [pid 366] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 374] set_robust_list(0x5555636e06a0, 24 [pid 373] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 372] munmap(0x7fe6f03b1000, 138412032 [pid 369] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULLexecuting program [pid 367] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 366] <... futex resumed>) = 0 [pid 374] <... set_robust_list resumed>) = 0 [pid 373] <... rt_sigaction resumed>NULL, 8) = 0 [pid 372] <... munmap resumed>) = 0 [pid 369] <... mount resumed>) = 0 [pid 367] <... mmap resumed>) = 0x7fe6f03b1000 [pid 366] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 374] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 373] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 372] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 369] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 366] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 374] <... prctl resumed>) = 0 [pid 372] <... openat resumed>) = 7 [pid 366] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 374] setpgid(0, 0 [pid 372] ioctl(7, LOOP_SET_FD, 6 [pid 366] <... futex resumed>) = 0 [pid 374] <... setpgid resumed>) = 0 [pid 372] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 366] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 374] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 372] ioctl(7, LOOP_CLR_FD [pid 374] <... openat resumed>) = 3 [pid 372] <... ioctl resumed>) = 0 [pid 374] write(3, "1000", 4) = 4 [pid 374] close(3) = 0 [pid 367] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 374] write(1, "executing program\n", 18 [pid 373] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 369] <... futex resumed>) = 1 [pid 366] <... futex resumed>) = 0 [pid 374] <... write resumed>) = 18 [pid 366] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=49000000} [pid 374] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 374] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 374] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 369] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 367] <... write resumed>) = 131072 [pid 373] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 374] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 369] <... open resumed>) = 5 [pid 367] munmap(0x7fe6f03b1000, 138412032 [pid 373] <... mmap resumed>) = 0x7fe6f87b1000 [pid 369] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 374] <... mmap resumed>) = 0x7fe6f87b1000 [pid 367] <... munmap resumed>) = 0 [pid 373] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 369] <... futex resumed>) = 1 [pid 366] <... futex resumed>) = 0 [pid 374] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 373] <... mprotect resumed>) = 0 [pid 369] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 367] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 366] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 374] <... mprotect resumed>) = 0 [pid 373] rt_sigprocmask(SIG_BLOCK, ~[], [pid 369] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 366] <... futex resumed>) = 0 [pid 374] rt_sigprocmask(SIG_BLOCK, ~[], [pid 373] <... rt_sigprocmask resumed>[], 8) = 0 [pid 372] ioctl(7, LOOP_SET_FD, 6 [pid 369] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 367] <... openat resumed>) = 7 [pid 366] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 374] <... rt_sigprocmask resumed>[], 8) = 0 [pid 372] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 374] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 372] close(7 [pid 369] <... mmap resumed>) = 0x20000000 [pid 373] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 369] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 367] ioctl(7, LOOP_SET_FD, 6 [pid 372] <... close resumed>) = 0 [pid 369] <... futex resumed>) = 1 [pid 366] <... futex resumed>) = 0 [pid 374] <... clone3 resumed> => {parent_tid=[375]}, 88) = 375 [pid 372] close(6 [pid 369] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 367] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 366] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 374] rt_sigprocmask(SIG_SETMASK, [], [pid 373] <... clone3 resumed> => {parent_tid=[376]}, 88) = 376 [pid 372] <... close resumed>) = 0 [pid 369] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 367] ioctl(7, LOOP_CLR_FD [pid 366] <... futex resumed>) = 0 [pid 374] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 372] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 369] memfd_create("syzkaller", 0 [pid 367] <... ioctl resumed>) = 0 [pid 373] rt_sigprocmask(SIG_SETMASK, [], [pid 366] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 374] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 372] <... futex resumed>) = 1 [pid 371] <... futex resumed>) = 0 [pid 369] <... memfd_create resumed>) = 6 [pid 374] <... futex resumed>) = 0 [pid 373] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 372] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 371] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 369] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 374] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 373] <... futex resumed>) = 0 [pid 372] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 371] <... futex resumed>) = 0 [pid 373] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 372] mknod(0x20000000, 000 [pid 371] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 369] <... mmap resumed>) = 0x7fe6f03b1000 [pid 372] <... mknod resumed>) = -1 EEXIST (File exists) [pid 372] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 371] <... futex resumed>) = 0 [pid 372] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 371] exit_group(0 [pid 372] <... futex resumed>) = ? [pid 371] <... exit_group resumed>) = ? [pid 372] +++ exited with 0 +++ [pid 371] +++ exited with 0 +++ ./strace-static-x86_64: Process 375 attached [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=371, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 367] ioctl(7, LOOP_SET_FD, 6 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 369] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 367] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 375] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 375] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 375] memfd_create("syzkaller", 0) = 3 [pid 369] <... write resumed>) = 131072 [pid 367] close(7 [pid 369] munmap(0x7fe6f03b1000, 138412032 [pid 375] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 367] <... close resumed>) = 0 [pid 375] <... mmap resumed>) = 0x7fe6f03b1000 [pid 369] <... munmap resumed>) = 0 [pid 367] close(6) = 0 [pid 369] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 367] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 364] <... futex resumed>) = 0 [pid 369] <... openat resumed>) = 7 [pid 367] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 364] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 369] ioctl(7, LOOP_SET_FD, 6 [pid 367] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 364] <... futex resumed>) = 0 [pid 369] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 367] mknod(0x20000000, 000 [pid 364] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 369] ioctl(7, LOOP_CLR_FD [pid 367] <... mknod resumed>) = -1 EEXIST (File exists) [pid 369] <... ioctl resumed>) = 0 [pid 367] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 364] <... futex resumed>) = 0 [pid 367] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 364] exit_group(0 [pid 367] <... futex resumed>) = ? [pid 364] <... exit_group resumed>) = ? [pid 367] +++ exited with 0 +++ [pid 364] +++ exited with 0 +++ [pid 375] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=364, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 369] ioctl(7, LOOP_SET_FD, 6 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 369] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 369] close(7) = 0 [pid 369] close(6) = 0 [pid 369] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 376 attached ) = 1 [pid 366] <... futex resumed>) = 0 [pid 366] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 366] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 376] set_robust_list(0x7fe6f87d19a0, 24 [pid 369] mknod(0x20000000, 000) = -1 EEXIST (File exists) [pid 369] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 366] <... futex resumed>) = 0 [pid 369] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 366] exit_group(0 [pid 369] <... futex resumed>) = ? [pid 366] <... exit_group resumed>) = ? [pid 376] <... set_robust_list resumed>) = 0 [pid 369] +++ exited with 0 +++ [pid 366] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=366, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 303] <... restart_syscall resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 303] ioctl(3, LOOP_CLR_FD) = 0 [pid 375] <... write resumed>) = 262144 [pid 303] close(3 [pid 375] munmap(0x7fe6f03b1000, 138412032 [pid 303] <... close resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 375] <... munmap resumed>) = 0 [pid 375] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 377 [pid 375] <... openat resumed>) = 4 [pid 375] ioctl(4, LOOP_SET_FD, 3 [pid 306] <... restart_syscall resumed>) = 0 [pid 375] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 375] ioctl(4, LOOP_CLR_FD) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 ./strace-static-x86_64: Process 377 attached [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 306] close(3 [pid 377] set_robust_list(0x5555636e06a0, 24 [pid 305] <... openat resumed>) = 3 [pid 306] <... close resumed>) = 0 [pid 377] <... set_robust_list resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 376] rt_sigprocmask(SIG_SETMASK, [], [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... ioctl resumed>) = 0 [pid 377] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 376] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 305] close(3 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 378 [pid 305] <... close resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 375] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 375] close(4) = 0 [pid 375] close(3 [pid 376] memfd_create("syzkaller", 0 [pid 375] <... close resumed>) = 0 [pid 375] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 379 [pid 374] <... futex resumed>) = 0 [pid 376] <... memfd_create resumed>) = 3 [pid 374] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 374] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 375] <... futex resumed>) = 1 [pid 375] chdir("./file0" [pid 376] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 375] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 375] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 374] <... futex resumed>) = 0 [pid 374] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 374] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 375] <... futex resumed>) = 1 [pid 375] creat("./bus", 000) = 3 [pid 375] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 374] <... futex resumed>) = 0 [pid 374] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 374] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 376] <... mmap resumed>) = 0x7fe6f03b1000 [pid 375] <... futex resumed>) = 1 [pid 375] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 375] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 374] <... futex resumed>) = 0 [pid 374] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 374] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 375] <... futex resumed>) = 1 [pid 375] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 375] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 374] <... futex resumed>) = 0 [pid 374] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 374] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 375] <... futex resumed>) = 1 [pid 375] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 375] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 374] <... futex resumed>) = 0 [pid 374] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 374] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 375] <... futex resumed>) = 1 [pid 375] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 376] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 375] <... mmap resumed>) = 0x20000000 [pid 375] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 374] <... futex resumed>) = 0 [pid 374] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 374] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 375] <... futex resumed>) = 1 [pid 375] memfd_create("syzkaller", 0) = 6 [pid 375] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 376] <... write resumed>) = 262144 [pid 375] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 377] setpgid(0, 0) = 0 executing program [pid 377] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 376] munmap(0x7fe6f03b1000, 138412032 [pid 375] <... write resumed>) = 131072 [pid 377] <... openat resumed>) = 3 [pid 377] write(3, "1000", 4) = 4 [pid 377] close(3) = 0 [pid 377] write(1, "executing program\n", 18) = 18 [pid 377] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 377] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 377] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 377] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 375] munmap(0x7fe6f03b1000, 138412032 [pid 377] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 375] <... munmap resumed>) = 0 [pid 377] <... mprotect resumed>) = 0 [pid 377] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 375] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 377] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 375] <... openat resumed>) = 7 [pid 375] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 375] ioctl(7, LOOP_CLR_FD) = 0 [pid 377] <... clone3 resumed> => {parent_tid=[380]}, 88) = 380 [pid 377] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 377] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 377] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 378 attached [pid 378] set_robust_list(0x5555636e06a0, 24) = 0 [pid 378] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 378] setpgid(0, 0) = 0 [pid 378] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 379 attached [pid 376] <... munmap resumed>) = 0 [pid 378] <... openat resumed>) = 3 [pid 376] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 375] ioctl(7, LOOP_SET_FD, 6 [pid 376] <... openat resumed>) = 4 [pid 375] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 375] close(7) = 0 [pid 375] close(6 [pid 376] ioctl(4, LOOP_SET_FD, 3 [pid 379] set_robust_list(0x5555636e06a0, 24 [pid 376] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 375] <... close resumed>) = 0 [pid 376] ioctl(4, LOOP_CLR_FD [pid 375] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 376] <... ioctl resumed>) = 0 [pid 374] <... futex resumed>) = 0 [pid 374] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 379] <... set_robust_list resumed>) = 0 [pid 374] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 375] <... futex resumed>) = 1 [pid 375] mknod(0x20000000, 000) = -1 EEXIST (File exists) [pid 375] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 374] <... futex resumed>) = 0 [pid 379] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 375] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 374] exit_group(0 [pid 375] <... futex resumed>) = ? [pid 374] <... exit_group resumed>) = ? [pid 379] <... prctl resumed>) = 0 [pid 375] +++ exited with 0 +++ [pid 374] +++ exited with 0 +++ [pid 378] write(3, "1000", 4executing program [pid 376] ioctl(4, LOOP_SET_FD, 3 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=374, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 379] setpgid(0, 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 376] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 379] <... setpgid resumed>) = 0 [pid 378] <... write resumed>) = 4 [pid 378] close(3) = 0 [pid 378] write(1, "executing program\n", 18) = 18 [pid 378] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 378] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 378] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 378] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 376] close(4 [pid 379] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 378] <... mmap resumed>) = 0x7fe6f87b1000 [pid 378] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 379] <... openat resumed>) = 3 [pid 378] rt_sigprocmask(SIG_BLOCK, ~[], [pid 376] <... close resumed>) = 0 [pid 379] write(3, "1000", 4 [pid 376] close(3 [pid 378] <... rt_sigprocmask resumed>[], 8) = 0 [pid 378] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[381]}, 88) = 381 [pid 378] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 378] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 378] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 380 attached [pid 376] <... close resumed>) = 0 [pid 379] <... write resumed>) = 4 [pid 380] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 380] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 380] memfd_create("syzkaller", 0 [pid 379] close(3 [pid 376] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 379] <... close resumed>) = 0 [pid 376] <... futex resumed>) = 1 [pid 373] <... futex resumed>) = 0 [pid 379] write(1, "executing program\n", 18executing program [pid 376] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 373] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 379] <... write resumed>) = 18 [pid 376] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 373] <... futex resumed>) = 0 [pid 376] chdir("./file0" [pid 373] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 379] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 376] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 376] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 379] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 376] <... futex resumed>) = 1 [pid 373] <... futex resumed>) = 0 [pid 379] <... rt_sigaction resumed>NULL, 8) = 0 [pid 376] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 373] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 379] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 376] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 373] <... futex resumed>) = 0 [pid 379] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 376] creat("./bus", 000 [pid 373] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 380] <... memfd_create resumed>) = 3 [pid 379] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 376] <... creat resumed>) = 3 [pid 379] <... mmap resumed>) = 0x7fe6f87b1000 [pid 376] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 379] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 380] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 376] <... futex resumed>) = 1 [pid 373] <... futex resumed>) = 0 [pid 379] <... mprotect resumed>) = 0 [pid 376] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 373] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 380] <... mmap resumed>) = 0x7fe6f03b1000 [pid 376] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 373] <... futex resumed>) = 0 [pid 379] rt_sigprocmask(SIG_BLOCK, ~[], [pid 376] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 379] <... rt_sigprocmask resumed>[], 8) = 0 [pid 373] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 379] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 376] <... openat resumed>) = 4 [pid 380] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 380] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 380] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 380] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 380] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 381 attached [pid 381] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 381] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 381] memfd_create("syzkaller", 0) = 3 [pid 381] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 376] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... restart_syscall resumed>) = 0 [pid 373] <... futex resumed>) = 0 [pid 376] <... futex resumed>) = 1 [pid 373] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 381] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 376] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 373] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 379] <... clone3 resumed> => {parent_tid=[382]}, 88) = 382 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 379] rt_sigprocmask(SIG_SETMASK, [], [pid 376] <... mount resumed>) = 0 [pid 379] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 376] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... openat resumed>) = 3 [pid 379] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 376] <... futex resumed>) = 1 [pid 373] <... futex resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 379] <... futex resumed>) = 0 [pid 376] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 373] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... ioctl resumed>) = 0 [pid 379] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 376] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 373] <... futex resumed>) = 0 [pid 302] close(3 [pid 376] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 373] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 376] <... open resumed>) = 5 [pid 302] <... close resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 376] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 380] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 380] close(4) = 0 [pid 380] close(3) = 0 [pid 376] <... futex resumed>) = 1 [pid 373] <... futex resumed>) = 0 [pid 376] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 373] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 383 [pid 376] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 373] <... futex resumed>) = 0 [pid 376] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 373] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 380] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 377] <... futex resumed>) = 0 [pid 377] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 376] <... mmap resumed>) = 0x20000000 [pid 377] <... futex resumed>) = 0 [pid 377] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 376] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 380] <... futex resumed>) = 1 [pid 373] <... futex resumed>) = 0 [pid 376] <... futex resumed>) = 1 [pid 373] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 380] chdir("./file0" [pid 373] <... futex resumed>) = 0 [pid 376] memfd_create("syzkaller", 0 [pid 373] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 380] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 376] <... memfd_create resumed>) = 6 [pid 380] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 376] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 380] <... futex resumed>) = 1 [pid 377] <... futex resumed>) = 0 [pid 376] <... mmap resumed>) = 0x7fe6f03b1000 [pid 380] creat("./bus", 000 [pid 377] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 380] <... creat resumed>) = 3 [pid 377] <... futex resumed>) = 0 [pid 380] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 377] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 380] <... futex resumed>) = 0 [pid 377] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 380] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 377] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 380] <... openat resumed>) = 4 [pid 377] <... futex resumed>) = 0 [pid 380] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 377] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 380] <... futex resumed>) = 0 [pid 377] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 380] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 377] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 380] <... mount resumed>) = 0 [pid 377] <... futex resumed>) = 0 [pid 380] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 377] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 380] <... futex resumed>) = 0 [pid 377] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 380] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 377] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 380] <... open resumed>) = 5 [pid 377] <... futex resumed>) = 0 [pid 376] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 380] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 377] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 380] <... futex resumed>) = 0 [pid 377] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 380] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 377] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 380] <... mmap resumed>) = 0x20000000 [pid 377] <... futex resumed>) = 0 [pid 376] <... write resumed>) = 131072 [pid 380] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 377] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 376] munmap(0x7fe6f03b1000, 138412032 [pid 380] <... futex resumed>) = 0 [pid 377] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 381] <... write resumed>) = 262144 [pid 380] memfd_create("syzkaller", 0 [pid 377] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 376] <... munmap resumed>) = 0 [pid 380] <... memfd_create resumed>) = 6 [pid 377] <... futex resumed>) = 0 [pid 376] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 380] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 377] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 380] <... mmap resumed>) = 0x7fe6f03b1000 [pid 376] <... openat resumed>) = 7 [pid 380] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 376] ioctl(7, LOOP_SET_FD, 6./strace-static-x86_64: Process 382 attached [pid 380] <... write resumed>) = 131072 [pid 376] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 381] munmap(0x7fe6f03b1000, 138412032 [pid 376] ioctl(7, LOOP_CLR_FD [pid 381] <... munmap resumed>) = 0 [pid 376] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 383 attached [pid 382] set_robust_list(0x7fe6f87d19a0, 24 [pid 381] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 383] set_robust_list(0x5555636e06a0, 24 [pid 382] <... set_robust_list resumed>) = 0 [pid 381] <... openat resumed>) = 4 [pid 383] <... set_robust_list resumed>) = 0 [pid 381] ioctl(4, LOOP_SET_FD, 3 [pid 380] munmap(0x7fe6f03b1000, 138412032 [pid 383] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 382] rt_sigprocmask(SIG_SETMASK, [], [pid 381] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 383] <... prctl resumed>) = 0 [pid 381] ioctl(4, LOOP_CLR_FD [pid 382] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 380] <... munmap resumed>) = 0 [pid 376] ioctl(7, LOOP_SET_FD, 6 [pid 383] setpgid(0, 0 [pid 381] <... ioctl resumed>) = 0 [pid 380] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 376] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 376] close(7 [pid 383] <... setpgid resumed>) = 0 [pid 380] <... openat resumed>) = 7 [pid 376] <... close resumed>) = 0 [pid 376] close(6 [pid 383] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 380] ioctl(7, LOOP_SET_FD, 6 [pid 383] <... openat resumed>) = 3 [pid 380] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 376] <... close resumed>) = 0 [pid 383] write(3, "1000", 4 [pid 380] ioctl(7, LOOP_CLR_FD [pid 376] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] memfd_create("syzkaller", 0 [pid 376] <... futex resumed>) = 1 [pid 373] <... futex resumed>) = 0 [pid 376] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 373] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 376] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 373] <... futex resumed>) = 0 [pid 376] mknod(0x20000000, 000 [pid 373] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 376] <... mknod resumed>) = -1 EEXIST (File exists) [pid 376] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 383] <... write resumed>) = 4 [pid 380] <... ioctl resumed>) = 0 [pid 376] <... futex resumed>) = 1 [pid 373] <... futex resumed>) = 0 [pid 382] <... memfd_create resumed>) = 3 [pid 376] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 373] exit_group(0 [pid 383] close(3 [pid 381] ioctl(4, LOOP_SET_FD, 3 [pid 376] <... futex resumed>) = ? executing program [pid 373] <... exit_group resumed>) = ? [pid 382] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 376] +++ exited with 0 +++ [pid 383] <... close resumed>) = 0 [pid 381] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 383] write(1, "executing program\n", 18 [pid 381] close(4 [pid 383] <... write resumed>) = 18 [pid 381] <... close resumed>) = 0 [pid 383] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 381] close(3 [pid 383] <... futex resumed>) = 0 [pid 382] <... mmap resumed>) = 0x7fe6f03b1000 [pid 381] <... close resumed>) = 0 [pid 373] +++ exited with 0 +++ [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=373, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 383] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 381] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 383] <... rt_sigaction resumed>NULL, 8) = 0 [pid 381] <... futex resumed>) = 1 [pid 380] ioctl(7, LOOP_SET_FD, 6 [pid 378] <... futex resumed>) = 0 [pid 383] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 381] chdir("./file0" [pid 380] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 378] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 383] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 381] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 380] close(7 [pid 378] <... futex resumed>) = 0 [pid 383] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 381] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 380] <... close resumed>) = 0 [pid 378] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 383] <... mmap resumed>) = 0x7fe6f87b1000 [pid 381] <... futex resumed>) = 0 [pid 380] close(6 [pid 378] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 304] <... restart_syscall resumed>) = 0 [pid 383] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 381] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 380] <... close resumed>) = 0 [pid 378] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 383] <... mprotect resumed>) = 0 [pid 381] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 380] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 378] <... futex resumed>) = 0 [pid 383] rt_sigprocmask(SIG_BLOCK, ~[], [pid 381] creat("./bus", 000 [pid 380] <... futex resumed>) = 1 [pid 378] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 377] <... futex resumed>) = 0 [pid 383] <... rt_sigprocmask resumed>[], 8) = 0 [pid 381] <... creat resumed>) = 3 [pid 380] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 377] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 383] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 381] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 380] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 377] <... futex resumed>) = 0 [pid 382] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 381] <... futex resumed>) = 1 [pid 380] mknod(0x20000000, 000 [pid 378] <... futex resumed>) = 0 [pid 377] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... openat resumed>) = 3 [pid 383] <... clone3 resumed> => {parent_tid=[384]}, 88) = 384 [pid 381] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 380] <... mknod resumed>) = -1 EEXIST (File exists) [pid 378] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] ioctl(3, LOOP_CLR_FD [pid 383] rt_sigprocmask(SIG_SETMASK, [], [pid 381] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 380] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 378] <... futex resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 383] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 381] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 380] <... futex resumed>) = 1 [pid 378] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 377] <... futex resumed>) = 0 [pid 304] close(3 [pid 383] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 381] <... openat resumed>) = 4 [pid 380] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 377] exit_group(0 [pid 383] <... futex resumed>) = 0 [pid 381] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 380] <... futex resumed>) = ? [pid 377] <... exit_group resumed>) = ? [pid 304] <... close resumed>) = 0 [pid 383] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 381] <... futex resumed>) = 1 [pid 380] +++ exited with 0 +++ [pid 378] <... futex resumed>) = 0 [pid 377] +++ exited with 0 +++ [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 381] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 378] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 381] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 378] <... futex resumed>) = 0 [pid 381] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 378] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 381] <... mount resumed>) = 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=377, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 381] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 385 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 381] <... futex resumed>) = 1 [pid 378] <... futex resumed>) = 0 [pid 381] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 378] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 381] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 378] <... futex resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 381] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 378] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 382] <... write resumed>) = 262144 [pid 381] <... open resumed>) = 5 [pid 381] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 378] <... futex resumed>) = 0 [pid 381] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 378] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 381] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 378] <... futex resumed>) = 0 [pid 381] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 382] munmap(0x7fe6f03b1000, 138412032 [pid 378] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 381] <... mmap resumed>) = 0x20000000 [pid 381] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 381] <... futex resumed>) = 1 [pid 378] <... futex resumed>) = 0 [pid 382] <... munmap resumed>) = 0 [pid 381] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 378] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... openat resumed>) = 3 [pid 381] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 378] <... futex resumed>) = 0 [pid 382] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 381] memfd_create("syzkaller", 0 [pid 378] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 303] ioctl(3, LOOP_CLR_FD [pid 382] <... openat resumed>) = 4 [pid 381] <... memfd_create resumed>) = 6 [pid 303] <... ioctl resumed>) = 0 [pid 382] ioctl(4, LOOP_SET_FD, 3 [pid 381] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 303] close(3 [pid 382] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 381] <... mmap resumed>) = 0x7fe6f03b1000 [pid 381] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 303] <... close resumed>) = 0 [pid 382] ioctl(4, LOOP_CLR_FD [pid 381] <... write resumed>) = 131072 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 381] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 381] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 7 ./strace-static-x86_64: Process 385 attached [pid 382] <... ioctl resumed>) = 0 [pid 381] ioctl(7, LOOP_SET_FD, 6 [pid 385] set_robust_list(0x5555636e06a0, 24 [pid 381] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 386 [pid 385] <... set_robust_list resumed>) = 0 [pid 381] ioctl(7, LOOP_CLR_FD [pid 385] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 381] <... ioctl resumed>) = 0 [pid 385] <... prctl resumed>) = 0 [pid 385] setpgid(0, 0) = 0 [pid 385] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 385] write(3, "1000", 4) = 4 [pid 385] close(3) = 0 [pid 385] write(1, "executing program\n", 18executing program ) = 18 [pid 385] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 385] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 382] ioctl(4, LOOP_SET_FD, 3 [pid 381] ioctl(7, LOOP_SET_FD, 6 [pid 385] <... rt_sigaction resumed>NULL, 8) = 0 [pid 382] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 381] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 385] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 381] close(7./strace-static-x86_64: Process 384 attached [pid 385] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 382] close(4 [pid 381] <... close resumed>) = 0 [pid 385] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 382] <... close resumed>) = 0 [pid 381] close(6 [pid 385] <... mmap resumed>) = 0x7fe6f87b1000 [pid 384] set_robust_list(0x7fe6f87d19a0, 24 [pid 382] close(3 [pid 381] <... close resumed>) = 0 [pid 385] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 381] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 385] <... mprotect resumed>) = 0 [pid 381] <... futex resumed>) = 1 [pid 378] <... futex resumed>) = 0 [pid 385] rt_sigprocmask(SIG_BLOCK, ~[], [pid 381] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 378] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 385] <... rt_sigprocmask resumed>[], 8) = 0 [pid 381] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 378] <... futex resumed>) = 0 [pid 385] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 382] <... close resumed>) = 0 [pid 381] mknod(0x20000000, 000 [pid 378] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 381] <... mknod resumed>) = -1 EEXIST (File exists) [pid 385] <... clone3 resumed> => {parent_tid=[387]}, 88) = 387 [pid 384] <... set_robust_list resumed>) = 0 [pid 382] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 381] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 385] rt_sigprocmask(SIG_SETMASK, [], [pid 382] <... futex resumed>) = 1 [pid 381] <... futex resumed>) = 1 [pid 379] <... futex resumed>) = 0 [pid 378] <... futex resumed>) = 0 [pid 385] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 382] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 381] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 379] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 378] exit_group(0 [pid 385] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 381] <... futex resumed>) = ? [pid 379] <... futex resumed>) = 0 [pid 378] <... exit_group resumed>) = ? [pid 385] <... futex resumed>) = 0 [pid 384] rt_sigprocmask(SIG_SETMASK, [], [pid 382] chdir("./file0" [pid 381] +++ exited with 0 +++ [pid 379] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 378] +++ exited with 0 +++ [pid 384] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 382] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 382] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=378, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 382] <... futex resumed>) = 1 [pid 379] <... futex resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 382] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 379] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] memfd_create("syzkaller", 0 [pid 382] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 379] <... futex resumed>) = 0 [pid 382] creat("./bus", 000 [pid 306] <... restart_syscall resumed>) = 0 [pid 384] <... memfd_create resumed>) = 3 [pid 379] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 382] <... creat resumed>) = 3 [pid 385] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 384] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 382] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 387 attached ) = 1 [pid 379] <... futex resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 384] <... mmap resumed>) = 0x7fe6f03b1000 [pid 382] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 379] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... openat resumed>) = 3 [pid 382] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 379] <... futex resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 382] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 379] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... ioctl resumed>) = 0 [pid 387] set_robust_list(0x7fe6f87d19a0, 24 [pid 306] close(3 [pid 387] <... set_robust_list resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 387] rt_sigprocmask(SIG_SETMASK, [], [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 382] <... openat resumed>) = 4 [pid 387] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 387] memfd_create("syzkaller", 0) = 3 [pid 387] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 382] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 388 [pid 379] <... futex resumed>) = 0 [pid 382] <... futex resumed>) = 1 [pid 379] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 379] <... futex resumed>) = 0 [pid 387] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 384] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 382] <... mount resumed>) = 0 [pid 379] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 382] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 379] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 382] <... futex resumed>) = 0 [pid 379] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 379] <... futex resumed>) = 0 [pid 379] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 382] <... open resumed>) = 5 [pid 382] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 379] <... futex resumed>) = 0 [pid 382] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 379] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 379] <... futex resumed>) = 0 [pid 382] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 379] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 386 attached [pid 382] <... mmap resumed>) = 0x20000000 [pid 382] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 379] <... futex resumed>) = 0 [pid 382] <... futex resumed>) = 1 [pid 386] set_robust_list(0x5555636e06a0, 24 [pid 379] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] memfd_create("syzkaller", 0 [pid 379] <... futex resumed>) = 0 [pid 386] <... set_robust_list resumed>) = 0 [pid 379] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 382] <... memfd_create resumed>) = 6 [pid 382] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 387] <... write resumed>) = 262144 ./strace-static-x86_64: Process 388 attached [pid 388] set_robust_list(0x5555636e06a0, 24) = 0 [pid 388] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 388] setpgid(0, 0) = 0 [pid 382] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 386] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 388] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 388] write(3, "1000", 4) = 4 [pid 382] <... write resumed>) = 131072 [pid 386] <... prctl resumed>) = 0 [pid 388] close(3) = 0 executing program [pid 388] write(1, "executing program\n", 18) = 18 [pid 388] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 388] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 386] setpgid(0, 0 [pid 382] munmap(0x7fe6f03b1000, 138412032 [pid 387] munmap(0x7fe6f03b1000, 138412032 [pid 388] <... rt_sigaction resumed>NULL, 8) = 0 [pid 387] <... munmap resumed>) = 0 [pid 388] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 388] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 388] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 388] rt_sigprocmask(SIG_BLOCK, ~[], [pid 387] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 387] ioctl(4, LOOP_SET_FD, 3 [pid 388] <... rt_sigprocmask resumed>[], 8) = 0 [pid 387] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 388] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 387] ioctl(4, LOOP_CLR_FD) = 0 [pid 388] <... clone3 resumed> => {parent_tid=[389]}, 88) = 389 [pid 388] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 388] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 388] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 389 attached [pid 389] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 389] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 389] memfd_create("syzkaller", 0) = 3 [pid 389] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 387] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 387] close(4) = 0 [pid 387] close(3) = 0 [pid 386] <... setpgid resumed>) = 0 [pid 382] <... munmap resumed>) = 0 [pid 387] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 385] <... futex resumed>) = 0 [pid 385] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] <... openat resumed>) = 7 [pid 386] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 382] ioctl(7, LOOP_SET_FD, 6 [pid 385] <... futex resumed>) = 0 [pid 385] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 387] <... futex resumed>) = 1 [pid 387] chdir("./file0" [pid 382] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 386] <... openat resumed>) = 3 [pid 387] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 387] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 385] <... futex resumed>) = 0 [pid 385] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 385] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 384] <... write resumed>) = 262144 [pid 382] ioctl(7, LOOP_CLR_FD [pid 386] write(3, "1000", 4 [pid 382] <... ioctl resumed>) = 0 [pid 387] <... futex resumed>) = 1 [pid 387] creat("./bus", 000 [pid 386] <... write resumed>) = 4 [pid 387] <... creat resumed>) = 3 [pid 386] close(3 [pid 384] munmap(0x7fe6f03b1000, 138412032 [pid 387] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 386] <... close resumed>) = 0 executing program [pid 386] write(1, "executing program\n", 18 [pid 385] <... futex resumed>) = 0 [pid 385] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 386] <... write resumed>) = 18 [pid 384] <... munmap resumed>) = 0 [pid 385] <... futex resumed>) = 0 [pid 385] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 387] <... futex resumed>) = 1 [pid 387] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 387] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 386] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 386] <... futex resumed>) = 0 [pid 385] <... futex resumed>) = 0 [pid 384] <... openat resumed>) = 4 [pid 382] ioctl(7, LOOP_SET_FD, 6 [pid 385] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 386] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 382] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 384] ioctl(4, LOOP_SET_FD, 3 [pid 386] <... rt_sigaction resumed>NULL, 8) = 0 [pid 385] <... futex resumed>) = 0 [pid 382] close(7 [pid 384] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 385] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 386] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 384] ioctl(4, LOOP_CLR_FD [pid 382] <... close resumed>) = 0 [pid 386] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 384] <... ioctl resumed>) = 0 [pid 382] close(6 [pid 386] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 387] <... futex resumed>) = 1 [pid 387] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL) = 0 [pid 382] <... close resumed>) = 0 [pid 386] <... mmap resumed>) = 0x7fe6f87b1000 [pid 382] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 379] <... futex resumed>) = 0 [pid 386] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 382] <... futex resumed>) = 1 [pid 379] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 386] <... mprotect resumed>) = 0 [pid 382] mknod(0x20000000, 000 [pid 379] <... futex resumed>) = 0 [pid 379] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 382] <... mknod resumed>) = -1 EEXIST (File exists) [pid 387] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 386] rt_sigprocmask(SIG_BLOCK, ~[], [pid 382] <... futex resumed>) = 1 [pid 386] <... rt_sigprocmask resumed>[], 8) = 0 [pid 379] <... futex resumed>) = 0 [pid 386] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 382] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 379] exit_group(0 [pid 387] <... futex resumed>) = 1 [pid 385] <... futex resumed>) = 0 [pid 382] <... futex resumed>) = ? [pid 379] <... exit_group resumed>) = ? [pid 387] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 385] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 387] <... open resumed>) = 5 [pid 385] <... futex resumed>) = 0 [pid 387] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 385] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 387] <... futex resumed>) = 0 [pid 385] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 387] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 385] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 387] <... mmap resumed>) = 0x20000000 [pid 385] <... futex resumed>) = 0 [pid 387] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 385] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 387] <... futex resumed>) = 0 [pid 385] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 387] memfd_create("syzkaller", 0 [pid 385] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] +++ exited with 0 +++ [pid 379] +++ exited with 0 +++ [pid 387] <... memfd_create resumed>) = 6 [pid 386] <... clone3 resumed> => {parent_tid=[390]}, 88) = 390 [pid 385] <... futex resumed>) = 0 [pid 387] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 386] rt_sigprocmask(SIG_SETMASK, [], [pid 385] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 384] ioctl(4, LOOP_SET_FD, 3 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=379, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 387] <... mmap resumed>) = 0x7fe6f03b1000 [pid 386] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 386] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 386] <... futex resumed>) = 0 [pid 387] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 386] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 384] close(4 [pid 387] <... write resumed>) = 131072 [pid 384] <... close resumed>) = 0 [pid 387] munmap(0x7fe6f03b1000, 138412032 [pid 384] close(3 [pid 387] <... munmap resumed>) = 0 [pid 387] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 7 [pid 387] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 387] ioctl(7, LOOP_CLR_FD) = 0 [pid 384] <... close resumed>) = 0 [pid 384] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 387] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 384] <... futex resumed>) = 1 [pid 383] <... futex resumed>) = 0 [pid 387] close(7 [pid 383] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 387] <... close resumed>) = 0 [pid 383] <... futex resumed>) = 0 [pid 387] close(6 [pid 383] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 390 attached [pid 387] <... close resumed>) = 0 [pid 384] chdir("./file0" [pid 387] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 387] <... futex resumed>) = 1 [pid 385] <... futex resumed>) = 0 [pid 384] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 387] mknod(0x20000000, 000 [pid 385] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] <... futex resumed>) = 1 [pid 383] <... futex resumed>) = 0 [pid 390] set_robust_list(0x7fe6f87d19a0, 24 [pid 387] <... mknod resumed>) = -1 EEXIST (File exists) [pid 385] <... futex resumed>) = 0 [pid 384] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 383] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 390] <... set_robust_list resumed>) = 0 [pid 387] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 385] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 384] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 383] <... futex resumed>) = 0 [pid 387] <... futex resumed>) = 0 [pid 385] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 384] creat("./bus", 000 [pid 383] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 387] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 385] exit_group(0 [pid 387] <... futex resumed>) = ? [pid 385] <... exit_group resumed>) = ? [pid 384] <... creat resumed>) = 3 [pid 390] rt_sigprocmask(SIG_SETMASK, [], [pid 387] +++ exited with 0 +++ [pid 385] +++ exited with 0 +++ [pid 384] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 383] <... futex resumed>) = 0 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=385, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 384] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 383] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 384] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 383] <... futex resumed>) = 0 [pid 384] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 383] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 390] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 389] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 384] <... openat resumed>) = 4 [pid 390] memfd_create("syzkaller", 0 [pid 389] <... write resumed>) = 262144 [pid 384] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... restart_syscall resumed>) = 0 [pid 384] <... futex resumed>) = 1 [pid 383] <... futex resumed>) = 0 [pid 390] <... memfd_create resumed>) = 3 [pid 384] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 383] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 390] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 383] <... futex resumed>) = 0 [pid 384] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 383] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 390] <... mmap resumed>) = 0x7fe6f03b1000 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 384] <... mount resumed>) = 0 [pid 389] munmap(0x7fe6f03b1000, 138412032 [pid 384] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... openat resumed>) = 3 [pid 384] <... futex resumed>) = 1 [pid 383] <... futex resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 384] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 383] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... ioctl resumed>) = 0 [pid 384] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 383] <... futex resumed>) = 0 [pid 305] close(3 [pid 384] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 383] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... close resumed>) = 0 [pid 389] <... munmap resumed>) = 0 [pid 384] <... open resumed>) = 5 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 384] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 389] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 389] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 389] ioctl(4, LOOP_CLR_FD) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 391 [pid 384] <... futex resumed>) = 1 [pid 383] <... futex resumed>) = 0 [pid 384] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 383] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 383] <... futex resumed>) = 0 [pid 384] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 383] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 391 attached [pid 391] set_robust_list(0x5555636e06a0, 24) = 0 [pid 384] <... mmap resumed>) = 0x20000000 [pid 391] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 384] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 391] <... prctl resumed>) = 0 [pid 384] <... futex resumed>) = 1 [pid 383] <... futex resumed>) = 0 [pid 384] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 383] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 383] <... futex resumed>) = 0 [pid 383] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 384] memfd_create("syzkaller", 0 [pid 391] setpgid(0, 0 [pid 384] <... memfd_create resumed>) = 6 [pid 391] <... setpgid resumed>) = 0 [pid 384] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 391] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 384] <... mmap resumed>) = 0x7fe6f03b1000 [pid 391] <... openat resumed>) = 3 [pid 389] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 389] close(4) = 0 [pid 389] close(3) = 0 [pid 389] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 388] <... futex resumed>) = 0 [pid 389] chdir("./file0" [pid 388] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 389] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 388] <... futex resumed>) = 0 [pid 384] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 389] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 388] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 389] <... futex resumed>) = 0 [pid 388] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 389] creat("./bus", 000 [pid 388] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 389] <... creat resumed>) = 3 [pid 388] <... futex resumed>) = 0 [pid 389] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 388] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 389] <... futex resumed>) = 0 [pid 388] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 389] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 388] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] <... write resumed>) = 131072 [pid 389] <... openat resumed>) = 4 [pid 388] <... futex resumed>) = 0 [pid 389] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 388] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 389] <... futex resumed>) = 0 [pid 388] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 384] munmap(0x7fe6f03b1000, 138412032 [pid 389] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 388] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 389] <... mount resumed>) = 0 [pid 388] <... futex resumed>) = 0 [pid 384] <... munmap resumed>) = 0 [pid 389] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 388] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 389] <... futex resumed>) = 0 [pid 388] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 389] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 388] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 389] <... open resumed>) = 5 [pid 388] <... futex resumed>) = 0 [pid 389] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 388] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 389] <... futex resumed>) = 0 [pid 388] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 390] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 389] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 388] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 391] write(3, "1000", 4 [pid 389] <... mmap resumed>) = 0x20000000 [pid 388] <... futex resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 391] <... write resumed>) = 4 [pid 389] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 388] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 384] <... openat resumed>) = 7 [pid 391] close(3 [pid 389] <... futex resumed>) = 0 [pid 388] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 384] ioctl(7, LOOP_SET_FD, 6 [pid 391] <... close resumed>) = 0 [pid 389] memfd_create("syzkaller", 0 [pid 388] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 384] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 391] write(1, "executing program\n", 18 [pid 389] <... memfd_create resumed>) = 6 [pid 388] <... futex resumed>) = 0 [pid 384] ioctl(7, LOOP_CLR_FD [pid 391] <... write resumed>) = 18 [pid 389] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 388] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 384] <... ioctl resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 391] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 389] <... mmap resumed>) = 0x7fe6f03b1000 [pid 304] <... openat resumed>) = 3 [pid 391] <... futex resumed>) = 0 [pid 390] <... write resumed>) = 262144 [pid 389] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 304] ioctl(3, LOOP_CLR_FD [pid 384] ioctl(7, LOOP_SET_FD, 6 [pid 304] <... ioctl resumed>) = 0 [pid 384] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] close(3 [pid 384] close(7 [pid 304] <... close resumed>) = 0 [pid 384] <... close resumed>) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 390] munmap(0x7fe6f03b1000, 138412032 [pid 384] close(6 [pid 391] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 389] <... write resumed>) = 131072 [pid 391] <... rt_sigaction resumed>NULL, 8) = 0 [pid 389] munmap(0x7fe6f03b1000, 138412032 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 392 [pid 384] <... close resumed>) = 0 [pid 384] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 391] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 389] <... munmap resumed>) = 0 [pid 384] <... futex resumed>) = 1 [pid 383] <... futex resumed>) = 0 [pid 391] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 389] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 384] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 383] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 391] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 390] <... munmap resumed>) = 0 [pid 389] <... openat resumed>) = 7 [pid 384] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 383] <... futex resumed>) = 0 [pid 391] <... mmap resumed>) = 0x7fe6f87b1000 [pid 390] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 389] ioctl(7, LOOP_SET_FD, 6 [pid 384] mknod(0x20000000, 000 [pid 383] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 391] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 390] <... openat resumed>) = 4 [pid 389] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 384] <... mknod resumed>) = -1 EEXIST (File exists) [pid 391] <... mprotect resumed>) = 0 [pid 390] ioctl(4, LOOP_SET_FD, 3 [pid 389] ioctl(7, LOOP_CLR_FD [pid 384] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 391] rt_sigprocmask(SIG_BLOCK, ~[], [pid 390] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 389] <... ioctl resumed>) = 0 [pid 384] <... futex resumed>) = 1 [pid 383] <... futex resumed>) = 0 [pid 391] <... rt_sigprocmask resumed>[], 8) = 0 [pid 390] ioctl(4, LOOP_CLR_FD [pid 384] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 383] exit_group(0 [pid 391] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 390] <... ioctl resumed>) = 0 [pid 384] <... futex resumed>) = ? [pid 383] <... exit_group resumed>) = ? [pid 384] +++ exited with 0 +++ [pid 383] +++ exited with 0 +++ [pid 391] <... clone3 resumed> => {parent_tid=[393]}, 88) = 393 [pid 391] rt_sigprocmask(SIG_SETMASK, [], [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=383, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 391] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 391] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 389] ioctl(7, LOOP_SET_FD, 6 [pid 391] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 389] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 389] close(7 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 389] <... close resumed>) = 0 [pid 389] close(6 [pid 302] <... openat resumed>) = 3 [pid 389] <... close resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD) = 0 [pid 389] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 390] ioctl(4, LOOP_SET_FD, 3 [pid 302] close(3 [pid 389] <... futex resumed>) = 1 [pid 388] <... futex resumed>) = 0 [pid 302] <... close resumed>) = 0 [pid 390] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 389] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 388] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 389] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 388] <... futex resumed>) = 0 [pid 389] mknod(0x20000000, 000 [pid 388] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 389] <... mknod resumed>) = -1 EEXIST (File exists) [pid 389] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 388] <... futex resumed>) = 0 [pid 390] close(4 [pid 389] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 388] exit_group(0 [pid 389] <... futex resumed>) = ? [pid 388] <... exit_group resumed>) = ? [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 394 [pid 390] <... close resumed>) = 0 [pid 389] +++ exited with 0 +++ [pid 388] +++ exited with 0 +++ ./strace-static-x86_64: Process 393 attached [pid 393] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 393] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=388, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 390] close(3 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 393] memfd_create("syzkaller", 0) = 3 [pid 393] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 390] <... close resumed>) = 0 ./strace-static-x86_64: Process 392 attached [pid 390] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 386] <... futex resumed>) = 0 [pid 386] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 390] chdir("./file0" [pid 386] <... futex resumed>) = 0 [pid 386] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 390] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 392] set_robust_list(0x5555636e06a0, 24 [pid 390] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 386] <... futex resumed>) = 0 [pid 390] <... futex resumed>) = 1 [pid 392] <... set_robust_list resumed>) = 0 [pid 386] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 390] creat("./bus", 000 [pid 392] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 386] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 390] <... creat resumed>) = 3 [pid 392] <... prctl resumed>) = 0 [pid 390] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 392] setpgid(0, 0 [pid 393] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 393] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 393] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 393] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 393] ioctl(4, LOOP_CLR_FD [pid 306] <... restart_syscall resumed>) = 0 [pid 390] <... futex resumed>) = 1 [pid 386] <... futex resumed>) = 0 [pid 392] <... setpgid resumed>) = 0 [pid 390] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 386] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 390] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 386] <... futex resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 390] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 386] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... openat resumed>) = 3 [pid 393] <... ioctl resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 394 attached [pid 394] set_robust_list(0x5555636e06a0, 24) = 0 [pid 394] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 394] setpgid(0, 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 395 [pid 390] <... openat resumed>) = 4 [pid 394] <... setpgid resumed>) = 0 [pid 390] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 392] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 394] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 392] <... openat resumed>) = 3 [pid 390] <... futex resumed>) = 1 [pid 386] <... futex resumed>) = 0 [pid 392] write(3, "1000", 4 [pid 390] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 386] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 392] <... write resumed>) = 4 [pid 390] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 386] <... futex resumed>) = 0 [pid 392] close(3 [pid 390] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 386] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 393] ioctl(4, LOOP_SET_FD, 3 [pid 390] <... mount resumed>) = 0 [pid 392] <... close resumed>) = 0 [pid 390] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 390] <... futex resumed>) = 1 [pid 392] write(1, "executing program\n", 18 [pid 386] <... futex resumed>) = 0 executing program [pid 390] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 392] <... write resumed>) = 18 [pid 386] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 390] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 386] <... futex resumed>) = 0 [pid 392] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 390] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 386] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 393] close(4 [pid 390] <... open resumed>) = 5 [pid 392] <... futex resumed>) = 0 [pid 390] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 392] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 390] <... futex resumed>) = 1 [pid 386] <... futex resumed>) = 0 [pid 392] <... rt_sigaction resumed>NULL, 8) = 0 [pid 390] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 386] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 392] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 390] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 386] <... futex resumed>) = 0 [pid 393] <... close resumed>) = 0 [pid 392] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 390] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 386] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 393] close(3 [pid 390] <... mmap resumed>) = 0x20000000 [pid 392] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 390] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] <... close resumed>) = 0 [pid 392] <... mmap resumed>) = 0x7fe6f87b1000 [pid 390] <... futex resumed>) = 1 [pid 386] <... futex resumed>) = 0 [pid 392] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 390] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 386] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 390] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 386] <... futex resumed>) = 0 [pid 392] <... mprotect resumed>) = 0 [pid 386] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 393] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 390] memfd_create("syzkaller", 0 [pid 391] <... futex resumed>) = 0 [pid 392] rt_sigprocmask(SIG_BLOCK, ~[], [pid 391] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 390] <... memfd_create resumed>) = 6 [pid 391] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 390] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 392] <... rt_sigprocmask resumed>[], 8) = 0 [pid 390] <... mmap resumed>) = 0x7fe6f03b1000 [pid 393] <... futex resumed>) = 1 [pid 393] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 393] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 391] <... futex resumed>) = 0 [pid 391] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 391] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 393] <... futex resumed>) = 1 [pid 393] creat("./bus", 000) = 3 [pid 393] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 391] <... futex resumed>) = 0 [pid 391] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 391] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 393] <... futex resumed>) = 1 [pid 393] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 390] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 392] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 393] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 391] <... futex resumed>) = 0 [pid 391] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 391] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 393] <... futex resumed>) = 1 [pid 393] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL) = 0 [pid 390] <... write resumed>) = 131072 [pid 393] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 391] <... futex resumed>) = 0 [pid 390] munmap(0x7fe6f03b1000, 138412032 [pid 391] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 391] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 393] <... futex resumed>) = 1 [pid 393] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 392] <... clone3 resumed> => {parent_tid=[396]}, 88) = 396 [pid 390] <... munmap resumed>) = 0 [pid 392] rt_sigprocmask(SIG_SETMASK, [], [pid 393] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 391] <... futex resumed>) = 0 [pid 391] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 391] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 393] <... futex resumed>) = 1 [pid 393] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 392] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 390] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 392] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 394] <... openat resumed>) = 3 [pid 392] <... futex resumed>) = 0 [pid 390] <... openat resumed>) = 7 [pid 392] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 390] ioctl(7, LOOP_SET_FD, 6 [pid 394] write(3, "1000", 4 [pid 390] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 394] <... write resumed>) = 4 [pid 390] ioctl(7, LOOP_CLR_FD [pid 394] close(3 [pid 390] <... ioctl resumed>) = 0 executing program [pid 394] <... close resumed>) = 0 [pid 394] write(1, "executing program\n", 18) = 18 [pid 394] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 394] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 394] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 393] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 394] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 393] <... futex resumed>) = 1 [pid 391] <... futex resumed>) = 0 [pid 394] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 393] memfd_create("syzkaller", 0 [pid 391] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 394] <... mprotect resumed>) = 0 [pid 393] <... memfd_create resumed>) = 6 [pid 391] <... futex resumed>) = 0 [pid 394] rt_sigprocmask(SIG_BLOCK, ~[], [pid 393] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 391] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 394] <... rt_sigprocmask resumed>[], 8) = 0 [pid 393] <... mmap resumed>) = 0x7fe6f03b1000 [pid 390] ioctl(7, LOOP_SET_FD, 6 [pid 394] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 393] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 390] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 390] close(7) = 0 [pid 390] close(6 [pid 394] <... clone3 resumed> => {parent_tid=[397]}, 88) = 397 [pid 394] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 394] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 394] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 390] <... close resumed>) = 0 [pid 390] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] <... write resumed>) = 131072 [pid 390] <... futex resumed>) = 1 [pid 386] <... futex resumed>) = 0 [pid 390] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 386] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 390] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 386] <... futex resumed>) = 0 [pid 390] mknod(0x20000000, 000 [pid 386] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 395 attached [pid 390] <... mknod resumed>) = -1 EEXIST (File exists) [pid 395] set_robust_list(0x5555636e06a0, 24 [pid 390] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 395] <... set_robust_list resumed>) = 0 [pid 390] <... futex resumed>) = 1 [pid 386] <... futex resumed>) = 0 [pid 390] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 395] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 386] exit_group(0 [pid 393] munmap(0x7fe6f03b1000, 138412032 [pid 390] <... futex resumed>) = 11 [pid 386] <... exit_group resumed>) = ? [pid 393] <... munmap resumed>) = 0 [pid 395] <... prctl resumed>) = 0 [pid 395] setpgid(0, 0) = 0 [pid 393] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 395] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 393] <... openat resumed>) = 7 [pid 395] <... openat resumed>) = 3 [pid 393] ioctl(7, LOOP_SET_FD, 6 [pid 390] +++ exited with 0 +++ [pid 386] +++ exited with 0 +++ [pid 395] write(3, "1000", 4 [pid 393] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=386, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 395] <... write resumed>) = 4 [pid 393] ioctl(7, LOOP_CLR_FD [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 395] close(3 [pid 393] <... ioctl resumed>) = 0 [pid 395] <... close resumed>) = 0 ./strace-static-x86_64: Process 396 attached [pid 395] write(1, "executing program\n", 18executing program [pid 396] set_robust_list(0x7fe6f87d19a0, 24 [pid 395] <... write resumed>) = 18 [pid 395] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 395] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 396] <... set_robust_list resumed>) = 0 [pid 395] <... rt_sigaction resumed>NULL, 8) = 0 [pid 395] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 395] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 395] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 395] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 395] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0}./strace-static-x86_64: Process 397 attached => {parent_tid=[398]}, 88) = 398 [pid 397] set_robust_list(0x7fe6f87d19a0, 24 [pid 396] rt_sigprocmask(SIG_SETMASK, [], [pid 395] rt_sigprocmask(SIG_SETMASK, [], [pid 393] ioctl(7, LOOP_SET_FD, 6 [pid 397] <... set_robust_list resumed>) = 0 [pid 395] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 393] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 397] rt_sigprocmask(SIG_SETMASK, [], [pid 395] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] close(7 [pid 396] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 397] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 395] <... futex resumed>) = 0 [pid 393] <... close resumed>) = 0 [pid 397] memfd_create("syzkaller", 0 [pid 395] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 393] close(6 [pid 397] <... memfd_create resumed>) = 3 [pid 396] memfd_create("syzkaller", 0 [pid 393] <... close resumed>) = 0 [pid 397] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 393] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 396] <... memfd_create resumed>) = 3 [pid 397] <... mmap resumed>) = 0x7fe6f03b1000 [pid 396] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 393] <... futex resumed>) = 1 [pid 391] <... futex resumed>) = 0 [pid 397] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 396] <... mmap resumed>) = 0x7fe6f03b1000 [pid 393] mknod(0x20000000, 000 [pid 391] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] <... mknod resumed>) = -1 EEXIST (File exists) [pid 391] <... futex resumed>) = 0 [pid 393] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 391] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 393] <... futex resumed>) = 0 [pid 391] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 393] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 391] exit_group(0 [pid 393] <... futex resumed>) = ? [pid 391] <... exit_group resumed>) = ? [pid 393] +++ exited with 0 +++ [pid 391] +++ exited with 0 +++ [pid 397] <... write resumed>) = 262144 [pid 396] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=391, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 397] munmap(0x7fe6f03b1000, 138412032 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 397] <... munmap resumed>) = 0 [pid 397] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 397] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 397] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 398 attached [pid 398] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 398] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 398] memfd_create("syzkaller", 0) = 3 [pid 398] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 396] <... write resumed>) = 262144 [pid 396] munmap(0x7fe6f03b1000, 138412032 [pid 397] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 397] close(4) = 0 [pid 397] close(3) = 0 [pid 397] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 394] <... futex resumed>) = 0 [pid 394] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 394] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 397] <... futex resumed>) = 1 [pid 397] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 397] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 394] <... futex resumed>) = 0 [pid 394] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 394] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 397] <... futex resumed>) = 1 [pid 397] creat("./bus", 000) = 3 [pid 397] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 394] <... futex resumed>) = 0 [pid 394] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 394] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 397] <... futex resumed>) = 1 [pid 397] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 397] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 394] <... futex resumed>) = 0 [pid 394] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 394] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 397] <... futex resumed>) = 1 [pid 397] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 397] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 394] <... futex resumed>) = 0 [pid 394] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... restart_syscall resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 394] <... futex resumed>) = 0 [pid 394] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 397] <... futex resumed>) = 1 [pid 397] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 397] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... openat resumed>) = 3 [pid 303] <... openat resumed>) = 3 [pid 305] ioctl(3, LOOP_CLR_FD [pid 303] ioctl(3, LOOP_CLR_FD [pid 305] <... ioctl resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 305] close(3 [pid 303] close(3 [pid 397] <... futex resumed>) = 1 [pid 394] <... futex resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 397] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 394] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 397] <... mmap resumed>) = 0x20000000 [pid 394] <... futex resumed>) = 0 [pid 397] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 394] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 397] <... futex resumed>) = 0 [pid 394] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 397] memfd_create("syzkaller", 0 [pid 394] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 397] <... memfd_create resumed>) = 6 [pid 394] <... futex resumed>) = 0 [pid 397] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 394] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 397] <... mmap resumed>) = 0x7fe6f03b1000 [pid 397] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 396] <... munmap resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 399 [pid 398] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 396] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 400 [pid 397] <... write resumed>) = 131072 [pid 396] <... openat resumed>) = 4 [pid 398] <... write resumed>) = 262144 [pid 396] ioctl(4, LOOP_SET_FD, 3 [pid 397] munmap(0x7fe6f03b1000, 138412032) = 0 ./strace-static-x86_64: Process 400 attached ./strace-static-x86_64: Process 399 attached [pid 396] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 397] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 397] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 400] set_robust_list(0x5555636e06a0, 24 [pid 399] set_robust_list(0x5555636e06a0, 24 [pid 397] ioctl(7, LOOP_CLR_FD [pid 396] ioctl(4, LOOP_CLR_FD [pid 397] <... ioctl resumed>) = 0 [pid 398] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 396] <... ioctl resumed>) = 0 [pid 398] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 398] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 398] ioctl(4, LOOP_CLR_FD) = 0 [pid 400] <... set_robust_list resumed>) = 0 [pid 399] <... set_robust_list resumed>) = 0 [pid 400] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 397] ioctl(7, LOOP_SET_FD, 6 [pid 400] setpgid(0, 0 [pid 397] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 399] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 396] ioctl(4, LOOP_SET_FD, 3 [pid 400] <... setpgid resumed>) = 0 [pid 399] <... prctl resumed>) = 0 [pid 397] close(7 [pid 396] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 399] setpgid(0, 0 [pid 396] close(4 [pid 400] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 399] <... setpgid resumed>) = 0 [pid 397] <... close resumed>) = 0 [pid 396] <... close resumed>) = 0 [pid 400] <... openat resumed>) = 3 [pid 399] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 397] close(6 [pid 396] close(3 [pid 400] write(3, "1000", 4 [pid 398] ioctl(4, LOOP_SET_FD, 3 [pid 397] <... close resumed>) = 0 [pid 396] <... close resumed>) = 0 [pid 400] <... write resumed>) = 4 [pid 399] <... openat resumed>) = 3 [pid 398] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 397] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 396] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 400] close(3 [pid 399] write(3, "1000", 4 [pid 398] close(4 [pid 397] <... futex resumed>) = 1 [pid 396] <... futex resumed>) = 1 [pid 394] <... futex resumed>) = 0 [pid 392] <... futex resumed>) = 0 [pid 400] <... close resumed>) = 0 [pid 399] <... write resumed>) = 4 [pid 398] <... close resumed>) = 0 [pid 397] mknod(0x20000000, 000 [pid 396] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 394] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 392] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 400] write(1, "executing program\n", 18 [pid 399] close(3 [pid 398] close(3 [pid 397] <... mknod resumed>) = -1 EEXIST (File exists) [pid 396] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) executing program [pid 394] <... futex resumed>) = 0 [pid 392] <... futex resumed>) = 0 [pid 400] <... write resumed>) = 18 [pid 399] <... close resumed>) = 0 [pid 397] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 396] chdir("./file0" [pid 394] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 392] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}executing program [pid 400] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 399] write(1, "executing program\n", 18 [pid 397] <... futex resumed>) = 0 [pid 396] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 394] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 400] <... futex resumed>) = 0 [pid 399] <... write resumed>) = 18 [pid 398] <... close resumed>) = 0 [pid 396] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 400] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 399] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 397] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 396] <... futex resumed>) = 1 [pid 394] exit_group(0 [pid 392] <... futex resumed>) = 0 [pid 399] <... futex resumed>) = 0 [pid 396] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 394] <... exit_group resumed>) = ? [pid 392] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 400] <... rt_sigaction resumed>NULL, 8) = 0 [pid 399] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 398] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 397] <... futex resumed>) = ? [pid 396] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 392] <... futex resumed>) = 0 [pid 400] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 399] <... rt_sigaction resumed>NULL, 8) = 0 [pid 396] creat("./bus", 000 [pid 392] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 399] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 397] +++ exited with 0 +++ [pid 396] <... creat resumed>) = 3 [pid 394] +++ exited with 0 +++ [pid 400] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 400] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 399] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 398] <... futex resumed>) = 1 [pid 396] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 395] <... futex resumed>) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=394, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 400] <... mmap resumed>) = 0x7fe6f87b1000 [pid 399] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 398] chdir("./file0" [pid 396] <... futex resumed>) = 1 [pid 395] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 392] <... futex resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 400] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 399] <... mmap resumed>) = 0x7fe6f87b1000 [pid 398] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 396] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 395] <... futex resumed>) = 0 [pid 392] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... restart_syscall resumed>) = 0 [pid 400] <... mprotect resumed>) = 0 [pid 399] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 398] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 396] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 395] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 392] <... futex resumed>) = 0 [pid 400] rt_sigprocmask(SIG_BLOCK, ~[], [pid 399] <... mprotect resumed>) = 0 [pid 398] <... futex resumed>) = 0 [pid 396] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 395] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 392] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 400] <... rt_sigprocmask resumed>[], 8) = 0 [pid 399] rt_sigprocmask(SIG_BLOCK, ~[], [pid 398] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 396] <... openat resumed>) = 4 [pid 395] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 400] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 399] <... rt_sigprocmask resumed>[], 8) = 0 [pid 398] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 396] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 395] <... futex resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 399] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 398] creat("./bus", 000 [pid 396] <... futex resumed>) = 1 [pid 395] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 392] <... futex resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 400] <... clone3 resumed> => {parent_tid=[401]}, 88) = 401 [pid 398] <... creat resumed>) = 3 [pid 396] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 392] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... ioctl resumed>) = 0 [pid 400] rt_sigprocmask(SIG_SETMASK, [], [pid 399] <... clone3 resumed> => {parent_tid=[402]}, 88) = 402 [pid 398] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 396] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 392] <... futex resumed>) = 0 [pid 302] close(3 [pid 400] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 399] rt_sigprocmask(SIG_SETMASK, [], [pid 398] <... futex resumed>) = 1 [pid 396] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 395] <... futex resumed>) = 0 [pid 392] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] <... close resumed>) = 0 [pid 400] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 399] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 398] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 396] <... mount resumed>) = 0 [pid 395] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 400] <... futex resumed>) = 0 [pid 399] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 398] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 396] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 395] <... futex resumed>) = 0 [pid 400] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 399] <... futex resumed>) = 0 [pid 398] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 396] <... futex resumed>) = 1 [pid 395] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 392] <... futex resumed>) = 0 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 403 [pid 399] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 398] <... openat resumed>) = 4 [pid 396] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 392] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 398] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 396] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 392] <... futex resumed>) = 0 [pid 398] <... futex resumed>) = 1 [pid 396] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 395] <... futex resumed>) = 0 [pid 392] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 398] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 396] <... open resumed>) = 5 [pid 395] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 398] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 396] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 395] <... futex resumed>) = 0 [pid 398] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 396] <... futex resumed>) = 1 [pid 395] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 392] <... futex resumed>) = 0 ./strace-static-x86_64: Process 401 attached [pid 398] <... mount resumed>) = 0 [pid 396] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 392] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] set_robust_list(0x7fe6f87d19a0, 24 [pid 398] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 396] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 392] <... futex resumed>) = 0 [pid 401] <... set_robust_list resumed>) = 0 [pid 398] <... futex resumed>) = 1 [pid 396] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 395] <... futex resumed>) = 0 [pid 392] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 401] rt_sigprocmask(SIG_SETMASK, [], [pid 398] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 396] <... mmap resumed>) = 0x20000000 [pid 395] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 398] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 396] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 395] <... futex resumed>) = 0 [pid 401] memfd_create("syzkaller", 0 [pid 398] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 396] <... futex resumed>) = 1 [pid 395] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 392] <... futex resumed>) = 0 [pid 401] <... memfd_create resumed>) = 3 [pid 398] <... open resumed>) = 5 [pid 396] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 392] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 398] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 396] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 392] <... futex resumed>) = 0 [pid 401] <... mmap resumed>) = 0x7fe6f03b1000 [pid 398] <... futex resumed>) = 1 [pid 396] memfd_create("syzkaller", 0 [pid 395] <... futex resumed>) = 0 [pid 392] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 398] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 396] <... memfd_create resumed>) = 6 [pid 395] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 398] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 396] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 395] <... futex resumed>) = 0 [pid 398] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 396] <... mmap resumed>) = 0x7fe6f03b1000 [pid 395] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 403 attached ./strace-static-x86_64: Process 402 attached [pid 401] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 398] <... mmap resumed>) = 0x20000000 [pid 396] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 403] set_robust_list(0x5555636e06a0, 24 [pid 402] set_robust_list(0x7fe6f87d19a0, 24 [pid 398] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 396] <... write resumed>) = 131072 [pid 403] <... set_robust_list resumed>) = 0 [pid 402] <... set_robust_list resumed>) = 0 [pid 398] <... futex resumed>) = 1 [pid 396] munmap(0x7fe6f03b1000, 138412032 [pid 395] <... futex resumed>) = 0 [pid 403] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 402] rt_sigprocmask(SIG_SETMASK, [], [pid 398] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 396] <... munmap resumed>) = 0 [pid 395] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 403] <... prctl resumed>) = 0 [pid 402] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 401] <... write resumed>) = 262144 [pid 398] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 396] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 395] <... futex resumed>) = 0 [pid 403] setpgid(0, 0 [pid 402] memfd_create("syzkaller", 0 [pid 401] munmap(0x7fe6f03b1000, 138412032 [pid 398] memfd_create("syzkaller", 0 [pid 396] <... openat resumed>) = 7 [pid 395] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 403] <... setpgid resumed>) = 0 [pid 402] <... memfd_create resumed>) = 3 [pid 401] <... munmap resumed>) = 0 [pid 398] <... memfd_create resumed>) = 6 [pid 396] ioctl(7, LOOP_SET_FD, 6 [pid 403] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 402] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 401] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 398] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 396] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 403] <... openat resumed>) = 3 [pid 402] <... mmap resumed>) = 0x7fe6f03b1000 [pid 401] <... openat resumed>) = 4 [pid 398] <... mmap resumed>) = 0x7fe6f03b1000 [pid 396] ioctl(7, LOOP_CLR_FD [pid 403] write(3, "1000", 4 [pid 402] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 401] ioctl(4, LOOP_SET_FD, 3 [pid 398] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 396] <... ioctl resumed>) = 0 [pid 403] <... write resumed>) = 4 [pid 401] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 403] close(3 [pid 402] <... write resumed>) = 262144 [pid 401] ioctl(4, LOOP_CLR_FD [pid 398] <... write resumed>) = 131072 executing program [pid 403] <... close resumed>) = 0 [pid 401] <... ioctl resumed>) = 0 [pid 398] munmap(0x7fe6f03b1000, 138412032 [pid 403] write(1, "executing program\n", 18 [pid 398] <... munmap resumed>) = 0 [pid 396] ioctl(7, LOOP_SET_FD, 6 [pid 403] <... write resumed>) = 18 [pid 398] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 396] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 403] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 398] <... openat resumed>) = 7 [pid 396] close(7 [pid 403] <... futex resumed>) = 0 [pid 398] ioctl(7, LOOP_SET_FD, 6 [pid 396] <... close resumed>) = 0 [pid 403] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 398] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 396] close(6 [pid 403] <... rt_sigaction resumed>NULL, 8) = 0 [pid 402] munmap(0x7fe6f03b1000, 138412032 [pid 398] ioctl(7, LOOP_CLR_FD [pid 396] <... close resumed>) = 0 [pid 403] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 402] <... munmap resumed>) = 0 [pid 401] ioctl(4, LOOP_SET_FD, 3 [pid 398] <... ioctl resumed>) = 0 [pid 396] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 403] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 402] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 401] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 396] <... futex resumed>) = 1 [pid 392] <... futex resumed>) = 0 [pid 403] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 402] <... openat resumed>) = 4 [pid 401] close(4 [pid 396] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 392] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 403] <... mmap resumed>) = 0x7fe6f87b1000 [pid 402] ioctl(4, LOOP_SET_FD, 3 [pid 401] <... close resumed>) = 0 [pid 396] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 392] <... futex resumed>) = 0 [pid 403] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 402] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 401] close(3 [pid 396] mknod(0x20000000, 000 [pid 392] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 403] <... mprotect resumed>) = 0 [pid 402] ioctl(4, LOOP_CLR_FD [pid 401] <... close resumed>) = 0 [pid 398] ioctl(7, LOOP_SET_FD, 6 [pid 396] <... mknod resumed>) = -1 EEXIST (File exists) [pid 403] rt_sigprocmask(SIG_BLOCK, ~[], [pid 402] <... ioctl resumed>) = 0 [pid 401] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 398] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 396] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 403] <... rt_sigprocmask resumed>[], 8) = 0 [pid 401] <... futex resumed>) = 1 [pid 400] <... futex resumed>) = 0 [pid 398] close(7 [pid 396] <... futex resumed>) = 1 [pid 392] <... futex resumed>) = 0 [pid 403] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 401] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 400] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 398] <... close resumed>) = 0 [pid 396] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 392] exit_group(0 [pid 401] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 400] <... futex resumed>) = 0 [pid 398] close(6 [pid 396] <... futex resumed>) = ? [pid 392] <... exit_group resumed>) = ? [pid 403] <... clone3 resumed> => {parent_tid=[404]}, 88) = 404 [pid 402] ioctl(4, LOOP_SET_FD, 3 [pid 401] chdir("./file0" [pid 400] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 398] <... close resumed>) = 0 [pid 396] +++ exited with 0 +++ [pid 392] +++ exited with 0 +++ [pid 403] rt_sigprocmask(SIG_SETMASK, [], [pid 402] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 401] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 398] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=392, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 403] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 402] close(4 [pid 401] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 398] <... futex resumed>) = 1 [pid 395] <... futex resumed>) = 0 [pid 403] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 402] <... close resumed>) = 0 [pid 401] <... futex resumed>) = 1 [pid 400] <... futex resumed>) = 0 [pid 398] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 395] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 403] <... futex resumed>) = 0 [pid 402] close(3 [pid 401] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 400] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 398] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 395] <... futex resumed>) = 0 ./strace-static-x86_64: Process 404 attached [pid 403] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 402] <... close resumed>) = 0 [pid 401] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 400] <... futex resumed>) = 0 [pid 398] mknod(0x20000000, 000 [pid 395] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 404] set_robust_list(0x7fe6f87d19a0, 24 [pid 402] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] creat("./bus", 000 [pid 400] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 398] <... mknod resumed>) = -1 EEXIST (File exists) [pid 404] <... set_robust_list resumed>) = 0 [pid 402] <... futex resumed>) = 1 [pid 401] <... creat resumed>) = 3 [pid 399] <... futex resumed>) = 0 [pid 398] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 404] rt_sigprocmask(SIG_SETMASK, [], [pid 402] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 401] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 399] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 398] <... futex resumed>) = 1 [pid 395] <... futex resumed>) = 0 [pid 404] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 402] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 401] <... futex resumed>) = 1 [pid 400] <... futex resumed>) = 0 [pid 399] <... futex resumed>) = 0 [pid 398] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 395] exit_group(0 [pid 404] memfd_create("syzkaller", 0 [pid 402] chdir("./file0" [pid 401] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 400] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 399] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 398] <... futex resumed>) = ? [pid 395] <... exit_group resumed>) = ? [pid 404] <... memfd_create resumed>) = 3 [pid 402] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 401] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 400] <... futex resumed>) = 0 [pid 398] +++ exited with 0 +++ [pid 395] +++ exited with 0 +++ [pid 404] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 402] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 400] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 404] <... mmap resumed>) = 0x7fe6f03b1000 [pid 402] <... futex resumed>) = 1 [pid 401] <... openat resumed>) = 4 [pid 399] <... futex resumed>) = 0 [pid 404] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 402] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 401] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=395, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 404] <... write resumed>) = 262144 [pid 402] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 401] <... futex resumed>) = 1 [pid 400] <... futex resumed>) = 0 [pid 399] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 400] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 400] <... futex resumed>) = 0 [pid 401] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 400] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 402] creat("./bus", 000 [pid 401] <... mount resumed>) = 0 [pid 399] <... futex resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 401] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 400] <... futex resumed>) = 0 [pid 401] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 400] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 400] <... futex resumed>) = 0 [pid 401] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 400] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 404] munmap(0x7fe6f03b1000, 138412032 [pid 402] <... creat resumed>) = 3 [pid 401] <... open resumed>) = 5 [pid 399] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 404] <... munmap resumed>) = 0 [pid 402] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 399] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 306] <... restart_syscall resumed>) = 0 [pid 404] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 402] <... futex resumed>) = 0 [pid 401] <... futex resumed>) = 1 [pid 400] <... futex resumed>) = 0 [pid 399] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 404] <... openat resumed>) = 4 [pid 402] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 401] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 400] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 399] <... futex resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 404] ioctl(4, LOOP_SET_FD, 3 [pid 401] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 400] <... futex resumed>) = 0 [pid 404] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 402] <... openat resumed>) = 4 [pid 401] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 400] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 399] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 304] <... openat resumed>) = 3 [pid 404] ioctl(4, LOOP_CLR_FD [pid 402] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] <... mmap resumed>) = 0x20000000 [pid 399] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 404] <... ioctl resumed>) = 0 [pid 402] <... futex resumed>) = 0 [pid 401] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 399] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... openat resumed>) = 3 [pid 304] ioctl(3, LOOP_CLR_FD [pid 402] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 401] <... futex resumed>) = 1 [pid 400] <... futex resumed>) = 0 [pid 399] <... futex resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 304] <... ioctl resumed>) = 0 [pid 402] <... mount resumed>) = 0 [pid 401] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 400] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 399] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... ioctl resumed>) = 0 [pid 304] close(3 [pid 402] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 400] <... futex resumed>) = 0 [pid 399] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 306] close(3 [pid 402] <... futex resumed>) = 0 [pid 401] memfd_create("syzkaller", 0 [pid 400] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 399] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... close resumed>) = 0 [pid 402] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 401] <... memfd_create resumed>) = 6 [pid 399] <... futex resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 402] <... open resumed>) = 5 [pid 401] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 399] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 401] <... mmap resumed>) = 0x7fe6f03b1000 [pid 402] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 404] ioctl(4, LOOP_SET_FD, 3 [pid 402] <... futex resumed>) = 1 [pid 401] <... write resumed>) = 131072 [pid 399] <... futex resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 406 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 405 [pid 404] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 402] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 401] munmap(0x7fe6f03b1000, 138412032 [pid 399] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 404] close(4 [pid 402] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 401] <... munmap resumed>) = 0 [pid 399] <... futex resumed>) = 0 [pid 404] <... close resumed>) = 0 [pid 402] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 401] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 399] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 404] close(3 [pid 401] <... openat resumed>) = 7 [pid 404] <... close resumed>) = 0 [pid 402] <... mmap resumed>) = 0x20000000 [pid 401] ioctl(7, LOOP_SET_FD, 6 [pid 404] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 402] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 404] <... futex resumed>) = 1 [pid 403] <... futex resumed>) = 0 [pid 402] <... futex resumed>) = 1 [pid 401] ioctl(7, LOOP_CLR_FD [pid 399] <... futex resumed>) = 0 [pid 404] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 403] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 402] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 401] <... ioctl resumed>) = 0 [pid 399] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 404] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 403] <... futex resumed>) = 0 [pid 402] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 399] <... futex resumed>) = 0 [pid 404] chdir("./file0" [pid 403] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 404] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 402] memfd_create("syzkaller", 0 [pid 399] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 404] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 403] <... futex resumed>) = 0 [pid 402] <... memfd_create resumed>) = 6 [pid 404] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 403] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 402] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 404] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 403] <... futex resumed>) = 0 ./strace-static-x86_64: Process 405 attached [pid 404] creat("./bus", 000 [pid 403] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 402] <... mmap resumed>) = 0x7fe6f03b1000 [pid 405] set_robust_list(0x5555636e06a0, 24 [pid 404] <... creat resumed>) = 3 [pid 405] <... set_robust_list resumed>) = 0 [pid 404] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 404] <... futex resumed>) = 1 [pid 405] <... prctl resumed>) = 0 [pid 404] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 405] setpgid(0, 0 [pid 401] ioctl(7, LOOP_SET_FD, 6 [pid 405] <... setpgid resumed>) = 0 [pid 401] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 401] close(7 [pid 405] <... openat resumed>) = 3 [pid 401] <... close resumed>) = 0 [pid 405] write(3, "1000", 4 [pid 401] close(6 [pid 405] <... write resumed>) = 4 [pid 403] <... futex resumed>) = 0 [pid 402] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072executing program [pid 401] <... close resumed>) = 0 [pid 405] close(3 [pid 403] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] <... close resumed>) = 0 [pid 401] <... futex resumed>) = 1 [pid 400] <... futex resumed>) = 0 [pid 405] write(1, "executing program\n", 18 [pid 401] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 400] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] <... write resumed>) = 18 [pid 404] <... futex resumed>) = 0 [pid 403] <... futex resumed>) = 1 [pid 402] <... write resumed>) = 131072 [pid 401] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 400] <... futex resumed>) = 0 [pid 405] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 404] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 403] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 402] munmap(0x7fe6f03b1000, 138412032 [pid 401] mknod(0x20000000, 000 [pid 400] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 405] <... futex resumed>) = 0 [pid 404] <... openat resumed>) = 4 [pid 401] <... mknod resumed>) = -1 EEXIST (File exists) [pid 405] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 404] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 402] <... munmap resumed>) = 0 [pid 401] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] <... rt_sigaction resumed>NULL, 8) = 0 [pid 404] <... futex resumed>) = 1 [pid 403] <... futex resumed>) = 0 [pid 402] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 401] <... futex resumed>) = 1 [pid 400] <... futex resumed>) = 0 [pid 405] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 404] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 403] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 402] <... openat resumed>) = 7 [pid 401] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 400] exit_group(0 [pid 405] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 404] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 403] <... futex resumed>) = 0 [pid 402] ioctl(7, LOOP_SET_FD, 6 [pid 401] <... futex resumed>) = ? [pid 400] <... exit_group resumed>) = ? [pid 405] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 404] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 403] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 402] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 401] +++ exited with 0 +++ [pid 400] +++ exited with 0 +++ ./strace-static-x86_64: Process 406 attached [pid 405] <... mmap resumed>) = 0x7fe6f87b1000 [pid 404] <... mount resumed>) = 0 [pid 402] ioctl(7, LOOP_CLR_FD [pid 405] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 404] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 402] <... ioctl resumed>) = 0 [pid 405] <... mprotect resumed>) = 0 [pid 404] <... futex resumed>) = 1 [pid 403] <... futex resumed>) = 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=400, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 406] set_robust_list(0x5555636e06a0, 24 [pid 405] rt_sigprocmask(SIG_BLOCK, ~[], [pid 404] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 403] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 405] <... rt_sigprocmask resumed>[], 8) = 0 [pid 404] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 403] <... futex resumed>) = 0 [pid 405] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 404] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 403] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 406] <... set_robust_list resumed>) = 0 [pid 404] <... open resumed>) = 5 [pid 405] <... clone3 resumed> => {parent_tid=[407]}, 88) = 407 [pid 404] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] rt_sigprocmask(SIG_SETMASK, [], [pid 404] <... futex resumed>) = 1 [pid 403] <... futex resumed>) = 0 [pid 405] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 404] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 403] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 404] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 403] <... futex resumed>) = 0 [pid 405] <... futex resumed>) = 0 [pid 404] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 403] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 406] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 405] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 404] <... mmap resumed>) = 0x20000000 [pid 402] ioctl(7, LOOP_SET_FD, 6 [pid 404] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 403] <... futex resumed>) = 0 [pid 402] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 404] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 403] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 402] close(7 [pid 404] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 403] <... futex resumed>) = 0 [pid 406] <... prctl resumed>) = 0 [pid 404] memfd_create("syzkaller", 0 [pid 403] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 402] <... close resumed>) = 0 [pid 404] <... memfd_create resumed>) = 6 [pid 402] close(6 [pid 404] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 406] setpgid(0, 0 [pid 404] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 402] <... close resumed>) = 0 [pid 404] <... write resumed>) = 131072 [pid 402] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 404] munmap(0x7fe6f03b1000, 138412032 [pid 402] <... futex resumed>) = 1 [pid 399] <... futex resumed>) = 0 [pid 406] <... setpgid resumed>) = 0 [pid 404] <... munmap resumed>) = 0 [pid 402] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 399] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 404] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 402] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 399] <... futex resumed>) = 0 [pid 406] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 404] <... openat resumed>) = 7 [pid 402] mknod(0x20000000, 000 [pid 399] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 404] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 402] <... mknod resumed>) = -1 EEXIST (File exists) [pid 404] ioctl(7, LOOP_CLR_FD [pid 402] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 406] <... openat resumed>) = 3 [pid 404] <... ioctl resumed>) = 0 [pid 402] <... futex resumed>) = 1 [pid 399] <... futex resumed>) = 0 [pid 406] write(3, "1000", 4 [pid 402] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 399] exit_group(0 [pid 406] <... write resumed>) = 4 [pid 402] <... futex resumed>) = ? [pid 399] <... exit_group resumed>) = ? [pid 406] close(3 [pid 402] +++ exited with 0 +++ ./strace-static-x86_64: Process 407 attached [pid 407] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 407] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 407] memfd_create("syzkaller", 0) = 3 [pid 407] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 399] +++ exited with 0 +++ executing program [pid 406] <... close resumed>) = 0 [pid 404] ioctl(7, LOOP_SET_FD, 6 [pid 406] write(1, "executing program\n", 18 [pid 404] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=399, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 404] close(7 [pid 406] <... write resumed>) = 18 [pid 404] <... close resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 404] close(6 [pid 406] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 404] <... close resumed>) = 0 [pid 406] <... futex resumed>) = 0 [pid 404] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 403] <... futex resumed>) = 0 [pid 404] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 403] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 404] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 403] <... futex resumed>) = 0 [pid 404] mknod(0x20000000, 000 [pid 403] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 404] <... mknod resumed>) = -1 EEXIST (File exists) [pid 404] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 403] <... futex resumed>) = 0 [pid 406] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 404] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 403] exit_group(0 [pid 406] <... rt_sigaction resumed>NULL, 8) = 0 [pid 404] <... futex resumed>) = ? [pid 403] <... exit_group resumed>) = ? [pid 406] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 404] +++ exited with 0 +++ [pid 403] +++ exited with 0 +++ [pid 303] <... restart_syscall resumed>) = 0 [pid 406] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=403, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 406] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 407] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 406] <... mmap resumed>) = 0x7fe6f87b1000 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 406] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 303] ioctl(3, LOOP_CLR_FD) = 0 [pid 406] <... mprotect resumed>) = 0 [pid 303] close(3) = 0 [pid 406] rt_sigprocmask(SIG_BLOCK, ~[], [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 406] <... rt_sigprocmask resumed>[], 8) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 408 [pid 406] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[409]}, 88) = 409 [pid 406] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 406] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 407] <... write resumed>) = 262144 [pid 406] <... futex resumed>) = 0 [pid 407] munmap(0x7fe6f03b1000, 138412032 [pid 406] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}executing program [pid 407] <... munmap resumed>) = 0 [pid 407] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 407] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 407] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 408 attached [pid 408] set_robust_list(0x5555636e06a0, 24) = 0 [pid 408] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 408] setpgid(0, 0) = 0 [pid 408] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 408] write(3, "1000", 4) = 4 [pid 408] close(3) = 0 [pid 408] write(1, "executing program\n", 18) = 18 [pid 408] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 408] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 407] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 407] close(4) = 0 [pid 407] close(3) = 0 [pid 407] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] <... futex resumed>) = 0 [pid 405] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 407] <... futex resumed>) = 1 [pid 407] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 407] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] <... futex resumed>) = 0 [pid 405] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 407] <... futex resumed>) = 1 [pid 407] creat("./bus", 000) = 3 [pid 407] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] <... futex resumed>) = 0 [pid 405] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 407] <... futex resumed>) = 1 [pid 407] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 407] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] <... futex resumed>) = 0 [pid 405] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 407] <... futex resumed>) = 1 [pid 407] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL) = 0 [pid 407] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] <... futex resumed>) = 0 [pid 405] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 407] <... futex resumed>) = 1 [pid 407] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 407] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] <... futex resumed>) = 0 [pid 405] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 407] <... futex resumed>) = 1 [pid 407] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 407] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] <... futex resumed>) = 0 [pid 405] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 407] <... futex resumed>) = 1 [pid 407] memfd_create("syzkaller", 0) = 6 [pid 407] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 305] <... restart_syscall resumed>) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 407] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 408] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 408] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 408] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 408] rt_sigprocmask(SIG_BLOCK, ~[], [pid 305] <... openat resumed>) = 3 [pid 305] ioctl(3, LOOP_CLR_FD [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 305] <... ioctl resumed>) = 0 [pid 408] <... rt_sigprocmask resumed>[], 8) = 0 [pid 302] <... openat resumed>) = 3 [pid 305] close(3 [pid 302] ioctl(3, LOOP_CLR_FD [pid 305] <... close resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 302] close(3 [pid 408] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 407] <... write resumed>) = 131072 [pid 302] <... close resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 411 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 408] <... clone3 resumed> => {parent_tid=[410]}, 88) = 410 [pid 408] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 408] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 408] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 407] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 407] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 412 [pid 407] <... openat resumed>) = 7 [pid 407] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 407] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 410 attached [pid 410] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 410] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 410] memfd_create("syzkaller", 0) = 3 [pid 410] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 407] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 407] close(7) = 0 [pid 407] close(6) = 0 [pid 407] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] <... futex resumed>) = 0 [pid 405] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 405] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 407] <... futex resumed>) = 1 [pid 407] mknod(0x20000000, 000) = -1 EEXIST (File exists) [pid 407] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] <... futex resumed>) = 0 [pid 405] exit_group(0) = ? [pid 407] <... futex resumed>) = ? [pid 407] +++ exited with 0 +++ [pid 405] +++ exited with 0 +++ ./strace-static-x86_64: Process 409 attached ./strace-static-x86_64: Process 412 attached ./strace-static-x86_64: Process 411 attached [pid 410] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 411] set_robust_list(0x5555636e06a0, 24 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=405, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 410] <... write resumed>) = 262144 [pid 411] <... set_robust_list resumed>) = 0 [pid 410] munmap(0x7fe6f03b1000, 138412032 [pid 411] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 410] <... munmap resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 409] set_robust_list(0x7fe6f87d19a0, 24 [pid 304] <... openat resumed>) = 3 [pid 409] <... set_robust_list resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 409] rt_sigprocmask(SIG_SETMASK, [], [pid 304] <... ioctl resumed>) = 0 [pid 409] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 304] close(3 [pid 409] memfd_create("syzkaller", 0 [pid 304] <... close resumed>) = 0 [pid 409] <... memfd_create resumed>) = 3 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 409] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 413 [pid 412] set_robust_list(0x5555636e06a0, 24 [pid 411] setpgid(0, 0 [pid 410] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 409] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 411] <... setpgid resumed>) = 0 [pid 412] <... set_robust_list resumed>) = 0 [pid 411] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 410] <... openat resumed>) = 4 executing program [pid 412] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 411] <... openat resumed>) = 3 [pid 410] ioctl(4, LOOP_SET_FD, 3 [pid 411] write(3, "1000", 4 [pid 410] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 411] <... write resumed>) = 4 [pid 410] ioctl(4, LOOP_CLR_FD [pid 411] close(3 [pid 410] <... ioctl resumed>) = 0 [pid 411] <... close resumed>) = 0 [pid 411] write(1, "executing program\n", 18 [pid 412] <... prctl resumed>) = 0 [pid 411] <... write resumed>) = 18 [pid 412] setpgid(0, 0 [pid 411] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] <... setpgid resumed>) = 0 [pid 411] <... futex resumed>) = 0 [pid 412] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 411] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 412] <... openat resumed>) = 3 [pid 411] <... rt_sigaction resumed>NULL, 8) = 0 [pid 411] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 410] ioctl(4, LOOP_SET_FD, 3 [pid 411] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 412] write(3, "1000", 4 [pid 411] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 410] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 411] <... mmap resumed>) = 0x7fe6f87b1000 [pid 410] close(4 [pid 411] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 410] <... close resumed>) = 0 [pid 412] <... write resumed>) = 4 [pid 411] <... mprotect resumed>) = 0 [pid 410] close(3 [pid 409] <... write resumed>) = 262144 [pid 412] close(3 [pid 411] rt_sigprocmask(SIG_BLOCK, ~[], [pid 412] <... close resumed>) = 0 executing program [pid 412] write(1, "executing program\n", 18) = 18 [pid 412] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 411] <... rt_sigprocmask resumed>[], 8) = 0 [pid 410] <... close resumed>) = 0 [pid 412] <... futex resumed>) = 0 [pid 411] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 410] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 410] <... futex resumed>) = 1 [pid 408] <... futex resumed>) = 0 [pid 411] <... clone3 resumed> => {parent_tid=[414]}, 88) = 414 [pid 410] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 408] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 411] rt_sigprocmask(SIG_SETMASK, [], [pid 410] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 408] <... futex resumed>) = 0 [pid 411] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 410] chdir("./file0" [pid 408] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 411] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 410] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 411] <... futex resumed>) = 0 [pid 410] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 411] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 410] <... futex resumed>) = 1 [pid 408] <... futex resumed>) = 0 [pid 410] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 408] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 410] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 408] <... futex resumed>) = 0 [pid 410] creat("./bus", 000 [pid 408] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 412] <... rt_sigaction resumed>NULL, 8) = 0 [pid 410] <... creat resumed>) = 3 [pid 409] munmap(0x7fe6f03b1000, 138412032 [pid 410] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 410] <... futex resumed>) = 1 [pid 409] <... munmap resumed>) = 0 [pid 408] <... futex resumed>) = 0 [pid 412] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 410] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 408] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 410] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 409] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 408] <... futex resumed>) = 0 [pid 412] <... mmap resumed>) = 0x7fe6f87b1000 [pid 410] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 409] <... openat resumed>) = 4 [pid 408] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 412] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 410] <... openat resumed>) = 4 [pid 409] ioctl(4, LOOP_SET_FD, 3 [pid 412] <... mprotect resumed>) = 0 [pid 410] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 412] rt_sigprocmask(SIG_BLOCK, ~[], [pid 410] <... futex resumed>) = 1 [pid 408] <... futex resumed>) = 0 [pid 412] <... rt_sigprocmask resumed>[], 8) = 0 [pid 410] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 409] ioctl(4, LOOP_CLR_FD [pid 408] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 410] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 408] <... futex resumed>) = 0 [pid 410] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 409] <... ioctl resumed>) = 0 [pid 408] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 412] <... clone3 resumed> => {parent_tid=[415]}, 88) = 415 [pid 412] rt_sigprocmask(SIG_SETMASK, [], [pid 410] <... mount resumed>) = 0 [pid 412] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 414 attached [pid 412] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 410] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] <... futex resumed>) = 0 [pid 414] set_robust_list(0x7fe6f87d19a0, 24 [pid 412] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 410] <... futex resumed>) = 1 [pid 408] <... futex resumed>) = 0 [pid 414] <... set_robust_list resumed>) = 0 [pid 410] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 408] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] rt_sigprocmask(SIG_SETMASK, [], [pid 410] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 408] <... futex resumed>) = 0 [pid 414] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 410] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 409] ioctl(4, LOOP_SET_FD, 3 [pid 408] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 414] memfd_create("syzkaller", 0 [pid 410] <... open resumed>) = 5 [pid 409] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 414] <... memfd_create resumed>) = 3 [pid 410] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] close(4 [pid 414] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 410] <... futex resumed>) = 1 [pid 409] <... close resumed>) = 0 [pid 408] <... futex resumed>) = 0 [pid 414] <... mmap resumed>) = 0x7fe6f03b1000 [pid 410] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 409] close(3 [pid 408] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 410] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 409] <... close resumed>) = 0 [pid 408] <... futex resumed>) = 0 [pid 410] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 409] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 408] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 409] <... futex resumed>) = 1 [pid 406] <... futex resumed>) = 0 [pid 410] <... mmap resumed>) = 0x20000000 [pid 409] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 406] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 410] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 406] <... futex resumed>) = 0 [pid 410] <... futex resumed>) = 1 [pid 409] chdir("./file0" [pid 408] <... futex resumed>) = 0 [pid 406] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 410] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 409] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 408] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 410] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 409] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 410] memfd_create("syzkaller", 0 [pid 409] <... futex resumed>) = 1 [pid 408] <... futex resumed>) = 0 [pid 406] <... futex resumed>) = 0 [pid 410] <... memfd_create resumed>) = 6 [pid 409] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 408] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 406] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 410] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 409] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 406] <... futex resumed>) = 0 [pid 410] <... mmap resumed>) = 0x7fe6f03b1000 [pid 409] creat("./bus", 000 [pid 406] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 409] <... creat resumed>) = 3 [pid 409] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 406] <... futex resumed>) = 0 [pid 409] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 406] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 406] <... futex resumed>) = 0 [pid 409] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 406] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 410] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 409] <... openat resumed>) = 4 ./strace-static-x86_64: Process 415 attached [pid 409] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 415] set_robust_list(0x7fe6f87d19a0, 24 [pid 409] <... futex resumed>) = 1 [pid 406] <... futex resumed>) = 0 [pid 415] <... set_robust_list resumed>) = 0 [pid 409] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 406] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 415] rt_sigprocmask(SIG_SETMASK, [], [pid 410] <... write resumed>) = 131072 [pid 409] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 406] <... futex resumed>) = 0 [pid 415] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 410] munmap(0x7fe6f03b1000, 138412032 [pid 409] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 406] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 413 attached [pid 415] memfd_create("syzkaller", 0 [pid 410] <... munmap resumed>) = 0 [pid 409] <... mount resumed>) = 0 [pid 415] <... memfd_create resumed>) = 3 [pid 414] <... write resumed>) = 262144 [pid 413] set_robust_list(0x5555636e06a0, 24 [pid 410] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 409] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 415] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 414] munmap(0x7fe6f03b1000, 138412032 [pid 413] <... set_robust_list resumed>) = 0 [pid 410] <... openat resumed>) = 7 [pid 409] <... futex resumed>) = 1 [pid 406] <... futex resumed>) = 0 [pid 415] <... mmap resumed>) = 0x7fe6f03b1000 [pid 414] <... munmap resumed>) = 0 [pid 413] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 410] ioctl(7, LOOP_SET_FD, 6 [pid 409] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 406] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 415] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 414] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 413] <... prctl resumed>) = 0 [pid 410] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 409] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 406] <... futex resumed>) = 0 [pid 414] <... openat resumed>) = 4 [pid 413] setpgid(0, 0 [pid 410] ioctl(7, LOOP_CLR_FD [pid 409] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 406] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 414] ioctl(4, LOOP_SET_FD, 3 [pid 413] <... setpgid resumed>) = 0 [pid 410] <... ioctl resumed>) = 0 [pid 409] <... open resumed>) = 5 [pid 415] <... write resumed>) = 262144 [pid 414] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 413] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 409] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] ioctl(4, LOOP_CLR_FD [pid 413] <... openat resumed>) = 3 [pid 409] <... futex resumed>) = 1 [pid 406] <... futex resumed>) = 0 [pid 414] <... ioctl resumed>) = 0 [pid 413] write(3, "1000", 4 [pid 409] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 406] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 413] <... write resumed>) = 4 [pid 409] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 406] <... futex resumed>) = 0 [pid 413] close(3 [pid 409] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 406] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 413] <... close resumed>) = 0 [pid 410] ioctl(7, LOOP_SET_FD, 6 [pid 409] <... mmap resumed>) = 0x20000000 executing program [pid 413] write(1, "executing program\n", 18 [pid 410] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 409] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 415] munmap(0x7fe6f03b1000, 138412032 [pid 413] <... write resumed>) = 18 [pid 410] close(7 [pid 409] <... futex resumed>) = 1 [pid 406] <... futex resumed>) = 0 [pid 415] <... munmap resumed>) = 0 [pid 413] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 410] <... close resumed>) = 0 [pid 409] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 406] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 415] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 414] ioctl(4, LOOP_SET_FD, 3 [pid 413] <... futex resumed>) = 0 [pid 410] close(6 [pid 409] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 406] <... futex resumed>) = 0 [pid 415] <... openat resumed>) = 4 [pid 414] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 413] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 409] memfd_create("syzkaller", 0 [pid 406] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 415] ioctl(4, LOOP_SET_FD, 3 [pid 414] close(4 [pid 413] <... rt_sigaction resumed>NULL, 8) = 0 [pid 410] <... close resumed>) = 0 [pid 409] <... memfd_create resumed>) = 6 [pid 415] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 414] <... close resumed>) = 0 [pid 413] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 410] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 415] ioctl(4, LOOP_CLR_FD [pid 414] close(3 [pid 413] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 410] <... futex resumed>) = 1 [pid 409] <... mmap resumed>) = 0x7fe6f03b1000 [pid 408] <... futex resumed>) = 0 [pid 415] <... ioctl resumed>) = 0 [pid 414] <... close resumed>) = 0 [pid 413] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 410] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 409] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 408] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 413] <... mmap resumed>) = 0x7fe6f87b1000 [pid 410] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 409] <... write resumed>) = 131072 [pid 408] <... futex resumed>) = 0 [pid 414] <... futex resumed>) = 1 [pid 413] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 411] <... futex resumed>) = 0 [pid 410] mknod(0x20000000, 000 [pid 409] munmap(0x7fe6f03b1000, 138412032 [pid 408] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 414] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 413] <... mprotect resumed>) = 0 [pid 411] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 410] <... mknod resumed>) = -1 EEXIST (File exists) [pid 409] <... munmap resumed>) = 0 [pid 414] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 413] rt_sigprocmask(SIG_BLOCK, ~[], [pid 411] <... futex resumed>) = 0 [pid 410] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 415] ioctl(4, LOOP_SET_FD, 3 [pid 414] chdir("./file0" [pid 413] <... rt_sigprocmask resumed>[], 8) = 0 [pid 411] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 410] <... futex resumed>) = 1 [pid 409] <... openat resumed>) = 7 [pid 408] <... futex resumed>) = 0 [pid 415] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 414] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 413] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 410] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 409] ioctl(7, LOOP_SET_FD, 6 [pid 408] exit_group(0 [pid 415] close(4 [pid 414] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 415] <... close resumed>) = 0 [pid 414] <... futex resumed>) = 1 [pid 413] <... clone3 resumed> => {parent_tid=[416]}, 88) = 416 [pid 411] <... futex resumed>) = 0 [pid 410] <... futex resumed>) = ? [pid 409] ioctl(7, LOOP_CLR_FD [pid 408] <... exit_group resumed>) = ? [pid 415] close(3 [pid 414] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 413] rt_sigprocmask(SIG_SETMASK, [], [pid 411] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 410] +++ exited with 0 +++ [pid 409] <... ioctl resumed>) = 0 [pid 415] <... close resumed>) = 0 [pid 414] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 413] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 411] <... futex resumed>) = 0 [pid 408] +++ exited with 0 +++ [pid 415] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] creat("./bus", 000 [pid 413] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 411] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=408, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 415] <... futex resumed>) = 1 [pid 414] <... creat resumed>) = 3 [pid 413] <... futex resumed>) = 0 [pid 412] <... futex resumed>) = 0 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 415] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 414] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 413] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 412] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 415] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 414] <... futex resumed>) = 1 [pid 412] <... futex resumed>) = 0 [pid 411] <... futex resumed>) = 0 [pid 415] chdir("./file0" [pid 412] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 409] ioctl(7, LOOP_SET_FD, 6./strace-static-x86_64: Process 416 attached [pid 415] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 414] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 411] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 416] set_robust_list(0x7fe6f87d19a0, 24 [pid 415] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 411] <... futex resumed>) = 0 [pid 409] close(7 [pid 415] <... futex resumed>) = 1 [pid 412] <... futex resumed>) = 0 [pid 409] <... close resumed>) = 0 [pid 415] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 412] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] close(6 [pid 415] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 412] <... futex resumed>) = 0 [pid 409] <... close resumed>) = 0 [pid 415] creat("./bus", 000 [pid 412] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 409] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 415] <... creat resumed>) = 3 [pid 409] <... futex resumed>) = 1 [pid 406] <... futex resumed>) = 0 [pid 415] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 406] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 415] <... futex resumed>) = 1 [pid 412] <... futex resumed>) = 0 [pid 409] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 406] <... futex resumed>) = 0 [pid 415] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 412] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] mknod(0x20000000, 000 [pid 406] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 415] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 412] <... futex resumed>) = 0 [pid 409] <... mknod resumed>) = -1 EEXIST (File exists) [pid 415] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 412] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 409] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 415] <... openat resumed>) = 4 [pid 409] <... futex resumed>) = 1 [pid 406] <... futex resumed>) = 0 [pid 415] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 411] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 409] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 406] exit_group(0 [pid 415] <... futex resumed>) = 1 [pid 414] <... openat resumed>) = 4 [pid 412] <... futex resumed>) = 0 [pid 409] <... futex resumed>) = ? [pid 406] <... exit_group resumed>) = ? [pid 415] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 416] <... set_robust_list resumed>) = 0 [pid 414] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] +++ exited with 0 +++ [pid 406] +++ exited with 0 +++ [pid 416] rt_sigprocmask(SIG_SETMASK, [], [pid 415] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 414] <... futex resumed>) = 1 [pid 412] <... futex resumed>) = 0 [pid 411] <... futex resumed>) = 0 [pid 415] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 412] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 416] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 415] <... mount resumed>) = 0 [pid 414] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 411] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=406, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 415] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 416] memfd_create("syzkaller", 0 [pid 415] <... futex resumed>) = 1 [pid 414] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 412] <... futex resumed>) = 0 [pid 411] <... futex resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 415] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 414] <... mount resumed>) = 0 [pid 412] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 411] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 416] <... memfd_create resumed>) = 3 [pid 415] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 414] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] <... futex resumed>) = 0 [pid 416] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 415] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 414] <... futex resumed>) = 0 [pid 412] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 411] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 416] <... mmap resumed>) = 0x7fe6f03b1000 [pid 415] <... open resumed>) = 5 [pid 414] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 411] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 415] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 411] <... futex resumed>) = 0 [pid 415] <... futex resumed>) = 1 [pid 414] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 412] <... futex resumed>) = 0 [pid 411] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 415] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 414] <... open resumed>) = 5 [pid 412] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 415] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 412] <... futex resumed>) = 0 [pid 415] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 414] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 415] <... mmap resumed>) = 0x20000000 [pid 414] <... futex resumed>) = 1 [pid 411] <... futex resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 415] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 411] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 415] <... futex resumed>) = 1 [pid 414] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 412] <... futex resumed>) = 0 [pid 411] <... futex resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 416] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 415] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 414] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 412] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 411] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 415] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 414] <... mmap resumed>) = 0x20000000 [pid 412] <... futex resumed>) = 0 [pid 303] <... openat resumed>) = 3 [pid 415] memfd_create("syzkaller", 0 [pid 414] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 303] ioctl(3, LOOP_CLR_FD [pid 416] <... write resumed>) = 262144 [pid 415] <... memfd_create resumed>) = 6 [pid 414] <... futex resumed>) = 1 [pid 411] <... futex resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 303] <... ioctl resumed>) = 0 [pid 416] munmap(0x7fe6f03b1000, 138412032 [pid 415] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 414] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 411] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] ioctl(3, LOOP_CLR_FD [pid 303] close(3 [pid 416] <... munmap resumed>) = 0 [pid 415] <... mmap resumed>) = 0x7fe6f03b1000 [pid 414] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 411] <... futex resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 416] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 415] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 414] memfd_create("syzkaller", 0 [pid 411] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 306] close(3 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 416] <... openat resumed>) = 4 [pid 415] <... write resumed>) = 131072 [pid 414] <... memfd_create resumed>) = 6 [pid 306] <... close resumed>) = 0 [pid 416] ioctl(4, LOOP_SET_FD, 3 [pid 415] munmap(0x7fe6f03b1000, 138412032 [pid 414] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 417 [pid 416] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 415] <... munmap resumed>) = 0 [pid 414] <... mmap resumed>) = 0x7fe6f03b1000 [pid 415] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 415] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 415] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 418 attached [pid 418] set_robust_list(0x5555636e06a0, 24) = 0 [pid 418] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 418] setpgid(0, 0 [pid 416] ioctl(4, LOOP_CLR_FD [pid 414] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 418 [pid 416] <... ioctl resumed>) = 0 [pid 415] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 415] close(7) = 0 [pid 415] close(6) = 0 [pid 414] <... write resumed>) = 131072 [pid 415] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] munmap(0x7fe6f03b1000, 138412032 [pid 415] <... futex resumed>) = 1 [pid 412] <... futex resumed>) = 0 [pid 415] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 414] <... munmap resumed>) = 0 [pid 412] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 415] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 414] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 412] <... futex resumed>) = 0 [pid 415] mknod(0x20000000, 000 [pid 414] <... openat resumed>) = 7 [pid 412] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 415] <... mknod resumed>) = -1 EEXIST (File exists) [pid 414] ioctl(7, LOOP_SET_FD, 6 [pid 415] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 414] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 412] <... futex resumed>) = 0 [pid 416] ioctl(4, LOOP_SET_FD, 3 [pid 415] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 414] ioctl(7, LOOP_CLR_FD [pid 412] exit_group(0 [pid 416] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 415] <... futex resumed>) = ? [pid 414] <... ioctl resumed>) = 0 [pid 412] <... exit_group resumed>) = ? [pid 416] close(4 [pid 415] +++ exited with 0 +++ [pid 412] +++ exited with 0 +++ [pid 416] <... close resumed>) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=412, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 416] close(3 [pid 302] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 416] <... close resumed>) = 0 [pid 302] <... openat resumed>) = 3 ./strace-static-x86_64: Process 417 attached [pid 416] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] ioctl(3, LOOP_CLR_FD [pid 417] set_robust_list(0x5555636e06a0, 24 [pid 416] <... futex resumed>) = 1 [pid 413] <... futex resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 417] <... set_robust_list resumed>) = 0 [pid 416] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 413] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] close(3 [pid 417] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 416] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 414] ioctl(7, LOOP_SET_FD, 6 [pid 413] <... futex resumed>) = 0 [pid 302] <... close resumed>) = 0 [pid 417] <... prctl resumed>) = 0 [pid 416] chdir("./file0" [pid 414] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 413] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 418] <... setpgid resumed>) = 0 [pid 417] setpgid(0, 0 [pid 416] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 414] close(7 [pid 418] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 417] <... setpgid resumed>) = 0 [pid 416] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] <... close resumed>) = 0 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 419 [pid 418] <... openat resumed>) = 3 [pid 417] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 416] <... futex resumed>) = 1 [pid 414] close(6 [pid 413] <... futex resumed>) = 0 [pid 418] write(3, "1000", 4 [pid 416] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 413] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 418] <... write resumed>) = 4 [pid 416] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 414] <... close resumed>) = 0 [pid 413] <... futex resumed>) = 0 [pid 418] close(3 [pid 417] <... openat resumed>) = 3 [pid 416] creat("./bus", 000 [pid 414] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 413] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 418] <... close resumed>) = 0 [pid 417] write(3, "1000", 4 [pid 416] <... creat resumed>) = 3 [pid 414] <... futex resumed>) = 1 [pid 411] <... futex resumed>) = 0 [pid 417] <... write resumed>) = 4 [pid 416] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 executing program [pid 414] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 411] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 418] write(1, "executing program\n", 18 [pid 417] close(3 [pid 416] <... futex resumed>) = 1 [pid 414] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 413] <... futex resumed>) = 0 executing program [pid 411] <... futex resumed>) = 0 [pid 418] <... write resumed>) = 18 [pid 417] <... close resumed>) = 0 [pid 416] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 414] mknod(0x20000000, 000 [pid 413] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 411] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 418] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 417] write(1, "executing program\n", 18 [pid 416] <... openat resumed>) = 4 [pid 414] <... mknod resumed>) = -1 EEXIST (File exists) [pid 413] <... futex resumed>) = 0 [pid 418] <... futex resumed>) = 0 [pid 417] <... write resumed>) = 18 [pid 416] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 413] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 418] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 417] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 416] <... futex resumed>) = 0 [pid 414] <... futex resumed>) = 1 [pid 413] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 411] <... futex resumed>) = 0 [pid 418] <... rt_sigaction resumed>NULL, 8) = 0 [pid 417] <... futex resumed>) = 0 [pid 416] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 414] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 413] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 411] exit_group(0./strace-static-x86_64: Process 419 attached [pid 418] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 417] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 416] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 414] <... futex resumed>) = ? [pid 413] <... futex resumed>) = 0 [pid 411] <... exit_group resumed>) = ? [pid 419] set_robust_list(0x5555636e06a0, 24 [pid 418] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 417] <... rt_sigaction resumed>NULL, 8) = 0 [pid 416] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 414] +++ exited with 0 +++ [pid 413] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 418] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 418] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 411] +++ exited with 0 +++ [pid 419] <... set_robust_list resumed>) = 0 [pid 418] rt_sigprocmask(SIG_BLOCK, ~[], [pid 417] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 416] <... mount resumed>) = 0 [pid 419] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 418] <... rt_sigprocmask resumed>[], 8) = 0 [pid 417] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 416] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=411, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 419] <... prctl resumed>) = 0 [pid 418] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 417] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 416] <... futex resumed>) = 1 [pid 413] <... futex resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 419] setpgid(0, 0 [pid 417] <... mmap resumed>) = 0x7fe6f87b1000 [pid 416] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 413] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 419] <... setpgid resumed>) = 0 [pid 418] <... clone3 resumed> => {parent_tid=[420]}, 88) = 420 [pid 417] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 416] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 413] <... futex resumed>) = 0 [pid 419] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 418] rt_sigprocmask(SIG_SETMASK, [], [pid 417] <... mprotect resumed>) = 0 [pid 416] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 413] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 418] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 417] rt_sigprocmask(SIG_BLOCK, ~[], [pid 416] <... open resumed>) = 5 [pid 419] <... openat resumed>) = 3 [pid 418] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 419] write(3, "1000", 4 [pid 418] <... futex resumed>) = 0 [pid 417] <... rt_sigprocmask resumed>[], 8) = 0 [pid 416] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 418] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 417] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 305] <... restart_syscall resumed>) = 0 [pid 419] <... write resumed>) = 4 [pid 416] <... futex resumed>) = 1 [pid 413] <... futex resumed>) = 0 [pid 419] close(3 [pid 417] <... clone3 resumed> => {parent_tid=[421]}, 88) = 421 [pid 416] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 413] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 419] <... close resumed>) = 0 [pid 417] rt_sigprocmask(SIG_SETMASK, [], [pid 416] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 413] <... futex resumed>) = 0 executing program [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 419] write(1, "executing program\n", 18 [pid 417] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 416] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 413] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... openat resumed>) = 3 [pid 419] <... write resumed>) = 18 [pid 417] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 416] <... mmap resumed>) = 0x20000000 [pid 305] ioctl(3, LOOP_CLR_FD [pid 419] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 417] <... futex resumed>) = 0 [pid 416] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... ioctl resumed>) = 0 [pid 419] <... futex resumed>) = 0 [pid 417] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 416] <... futex resumed>) = 1 [pid 413] <... futex resumed>) = 0 [pid 305] close(3 [pid 419] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 416] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 413] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... close resumed>) = 0 [pid 419] <... rt_sigaction resumed>NULL, 8) = 0 [pid 416] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 413] <... futex resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 419] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 416] memfd_create("syzkaller", 0 [pid 413] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 419] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 416] <... memfd_create resumed>) = 6 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 422 [pid 419] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 416] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 419] <... mmap resumed>) = 0x7fe6f87b1000 [pid 416] <... mmap resumed>) = 0x7fe6f03b1000 [pid 419] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE./strace-static-x86_64: Process 420 attached [pid 420] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 420] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 420] memfd_create("syzkaller", 0) = 3 [pid 419] <... mprotect resumed>) = 0 [pid 416] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 420] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 419] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 416] <... write resumed>) = 131072 [pid 419] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 416] munmap(0x7fe6f03b1000, 138412032 [pid 420] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 419] <... clone3 resumed> => {parent_tid=[423]}, 88) = 423 [pid 416] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 421 attached [pid 419] rt_sigprocmask(SIG_SETMASK, [], [pid 416] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 421] set_robust_list(0x7fe6f87d19a0, 24 [pid 419] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 421] <... set_robust_list resumed>) = 0 [pid 419] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 416] <... openat resumed>) = 7 [pid 421] rt_sigprocmask(SIG_SETMASK, [], [pid 419] <... futex resumed>) = 0 [pid 416] ioctl(7, LOOP_SET_FD, 6 [pid 419] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 421] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 416] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 421] memfd_create("syzkaller", 0 [pid 416] ioctl(7, LOOP_CLR_FD [pid 421] <... memfd_create resumed>) = 3 [pid 416] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 422 attached [pid 421] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 422] set_robust_list(0x5555636e06a0, 24 [pid 421] <... mmap resumed>) = 0x7fe6f03b1000 [pid 422] <... set_robust_list resumed>) = 0 [pid 422] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 422] setpgid(0, 0) = 0 [pid 422] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 422] write(3, "1000", 4 [pid 416] ioctl(7, LOOP_SET_FD, 6 [pid 422] <... write resumed>) = 4 [pid 416] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 422] close(3 [pid 416] close(7executing program [pid 422] <... close resumed>) = 0 [pid 416] <... close resumed>) = 0 [pid 422] write(1, "executing program\n", 18 [pid 416] close(6 [pid 422] <... write resumed>) = 18 [pid 422] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 422] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 416] <... close resumed>) = 0 [pid 422] <... rt_sigaction resumed>NULL, 8) = 0 [pid 421] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 420] <... write resumed>) = 262144 [pid 416] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 422] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 416] <... futex resumed>) = 1 [pid 413] <... futex resumed>) = 0 [pid 422] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 416] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 413] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 422] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 416] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 413] <... futex resumed>) = 0 [pid 422] <... mmap resumed>) = 0x7fe6f87b1000 [pid 416] mknod(0x20000000, 000 [pid 413] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 423 attached [pid 422] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 421] <... write resumed>) = 262144 [pid 416] <... mknod resumed>) = -1 EEXIST (File exists) [pid 423] set_robust_list(0x7fe6f87d19a0, 24 [pid 422] <... mprotect resumed>) = 0 [pid 421] munmap(0x7fe6f03b1000, 138412032 [pid 416] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] <... set_robust_list resumed>) = 0 [pid 422] rt_sigprocmask(SIG_BLOCK, ~[], [pid 416] <... futex resumed>) = 1 [pid 421] <... munmap resumed>) = 0 [pid 413] <... futex resumed>) = 0 [pid 423] rt_sigprocmask(SIG_SETMASK, [], [pid 422] <... rt_sigprocmask resumed>[], 8) = 0 [pid 421] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 420] munmap(0x7fe6f03b1000, 138412032 [pid 416] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 413] exit_group(0 [pid 423] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 422] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 421] <... openat resumed>) = 4 [pid 420] <... munmap resumed>) = 0 [pid 416] <... futex resumed>) = ? [pid 413] <... exit_group resumed>) = ? [pid 420] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 422] <... clone3 resumed> => {parent_tid=[424]}, 88) = 424 [pid 420] <... openat resumed>) = 4 [pid 422] rt_sigprocmask(SIG_SETMASK, [], [pid 420] ioctl(4, LOOP_SET_FD, 3 [pid 422] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 420] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 422] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 420] ioctl(4, LOOP_CLR_FD [pid 422] <... futex resumed>) = 0 [pid 420] <... ioctl resumed>) = 0 [pid 422] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 424 attached [pid 424] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 424] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 424] memfd_create("syzkaller", 0 [pid 420] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 420] close(4) = 0 [pid 420] close(3) = 0 [pid 420] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 418] <... futex resumed>) = 0 [pid 420] chdir("./file0" [pid 418] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 420] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 418] <... futex resumed>) = 0 [pid 420] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 418] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 420] <... futex resumed>) = 0 [pid 418] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 420] creat("./bus", 000 [pid 418] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 416] +++ exited with 0 +++ [pid 413] +++ exited with 0 +++ [pid 423] memfd_create("syzkaller", 0 [pid 421] ioctl(4, LOOP_SET_FD, 3 [pid 420] <... creat resumed>) = 3 [pid 418] <... futex resumed>) = 0 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=413, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 420] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 418] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 423] <... memfd_create resumed>) = 3 [pid 421] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 420] <... futex resumed>) = 0 [pid 418] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 420] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 418] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 421] ioctl(4, LOOP_CLR_FD [pid 420] <... openat resumed>) = 4 [pid 418] <... futex resumed>) = 0 [pid 423] <... mmap resumed>) = 0x7fe6f03b1000 [pid 421] <... ioctl resumed>) = 0 [pid 420] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 418] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 420] <... futex resumed>) = 0 [pid 418] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 420] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 418] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 420] <... mount resumed>) = 0 [pid 418] <... futex resumed>) = 0 [pid 420] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 418] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 420] <... futex resumed>) = 0 [pid 418] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 420] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 418] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 420] <... open resumed>) = 5 [pid 418] <... futex resumed>) = 0 [pid 420] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 418] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 420] <... futex resumed>) = 0 [pid 418] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 420] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 418] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 420] <... mmap resumed>) = 0x20000000 [pid 418] <... futex resumed>) = 0 [pid 421] ioctl(4, LOOP_SET_FD, 3 [pid 420] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 418] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 420] <... futex resumed>) = 0 [pid 418] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 420] memfd_create("syzkaller", 0 [pid 418] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 420] <... memfd_create resumed>) = 6 [pid 418] <... futex resumed>) = 0 [pid 420] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 418] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 424] <... memfd_create resumed>) = 3 [pid 423] <... write resumed>) = 262144 [pid 421] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 420] <... mmap resumed>) = 0x7fe6f03b1000 [pid 423] munmap(0x7fe6f03b1000, 138412032 [pid 421] close(4 [pid 424] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 423] <... munmap resumed>) = 0 [pid 421] <... close resumed>) = 0 [pid 420] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 423] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 421] close(3 [pid 424] <... mmap resumed>) = 0x7fe6f03b1000 [pid 421] <... close resumed>) = 0 [pid 420] <... write resumed>) = 131072 [pid 423] <... openat resumed>) = 4 [pid 421] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] ioctl(4, LOOP_SET_FD, 3 [pid 421] <... futex resumed>) = 1 [pid 420] munmap(0x7fe6f03b1000, 138412032 [pid 417] <... futex resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 423] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 421] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 420] <... munmap resumed>) = 0 [pid 417] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] ioctl(4, LOOP_CLR_FD [pid 421] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 420] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 417] <... futex resumed>) = 0 [pid 423] <... ioctl resumed>) = 0 [pid 421] chdir("./file0" [pid 420] <... openat resumed>) = 7 [pid 417] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 424] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 421] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 420] ioctl(7, LOOP_SET_FD, 6 [pid 304] <... openat resumed>) = 3 [pid 421] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 420] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] ioctl(3, LOOP_CLR_FD [pid 421] <... futex resumed>) = 1 [pid 420] ioctl(7, LOOP_CLR_FD [pid 417] <... futex resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 421] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 420] <... ioctl resumed>) = 0 [pid 417] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] close(3 [pid 421] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 417] <... futex resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 424] <... write resumed>) = 262144 [pid 421] creat("./bus", 000 [pid 417] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 423] ioctl(4, LOOP_SET_FD, 3 [pid 421] <... creat resumed>) = 3 [pid 423] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 421] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 420] ioctl(7, LOOP_SET_FD, 6 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 425 [pid 423] close(4 [pid 421] <... futex resumed>) = 1 [pid 420] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 417] <... futex resumed>) = 0 [pid 423] <... close resumed>) = 0 [pid 421] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 420] close(7 [pid 417] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] close(3 [pid 421] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 420] <... close resumed>) = 0 [pid 417] <... futex resumed>) = 0 [pid 424] munmap(0x7fe6f03b1000, 138412032 [pid 420] close(6 [pid 424] <... munmap resumed>) = 0 [pid 420] <... close resumed>) = 0 [pid 424] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 423] <... close resumed>) = 0 [pid 421] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 420] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 417] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 424] <... openat resumed>) = 4 [pid 423] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 421] <... openat resumed>) = 4 [pid 420] <... futex resumed>) = 1 [pid 418] <... futex resumed>) = 0 [pid 424] ioctl(4, LOOP_SET_FD, 3 [pid 423] <... futex resumed>) = 1 [pid 421] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 420] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 419] <... futex resumed>) = 0 [pid 418] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 424] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 423] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 421] <... futex resumed>) = 1 [pid 420] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 419] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 418] <... futex resumed>) = 0 [pid 417] <... futex resumed>) = 0 [pid 424] ioctl(4, LOOP_CLR_FD [pid 423] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 421] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 420] mknod(0x20000000, 000 [pid 419] <... futex resumed>) = 0 [pid 418] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 417] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 424] <... ioctl resumed>) = 0 [pid 423] chdir("./file0" [pid 421] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 420] <... mknod resumed>) = -1 EEXIST (File exists) [pid 419] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 417] <... futex resumed>) = 0 ./strace-static-x86_64: Process 425 attached [pid 423] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 421] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 420] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 417] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 425] set_robust_list(0x5555636e06a0, 24 [pid 423] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 421] <... mount resumed>) = 0 [pid 420] <... futex resumed>) = 1 [pid 418] <... futex resumed>) = 0 [pid 425] <... set_robust_list resumed>) = 0 [pid 423] <... futex resumed>) = 1 [pid 421] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 420] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 419] <... futex resumed>) = 0 [pid 418] exit_group(0 [pid 425] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 423] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 421] <... futex resumed>) = 1 [pid 420] <... futex resumed>) = ? [pid 419] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 418] <... exit_group resumed>) = ? [pid 417] <... futex resumed>) = 0 [pid 425] <... prctl resumed>) = 0 [pid 423] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 421] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 420] +++ exited with 0 +++ [pid 419] <... futex resumed>) = 0 [pid 418] +++ exited with 0 +++ [pid 417] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 425] setpgid(0, 0 [pid 424] ioctl(4, LOOP_SET_FD, 3 [pid 423] creat("./bus", 000 [pid 421] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 419] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 417] <... futex resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=418, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 425] <... setpgid resumed>) = 0 [pid 424] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 423] <... creat resumed>) = 3 [pid 421] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 417] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 425] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 424] close(4 [pid 423] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 421] <... open resumed>) = 5 [pid 424] <... close resumed>) = 0 [pid 423] <... futex resumed>) = 1 [pid 421] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 419] <... futex resumed>) = 0 [pid 425] <... openat resumed>) = 3 [pid 424] close(3 [pid 423] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 421] <... futex resumed>) = 1 [pid 419] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 417] <... futex resumed>) = 0 [pid 425] write(3, "1000", 4 [pid 424] <... close resumed>) = 0 [pid 423] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 421] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 419] <... futex resumed>) = 0 [pid 417] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 425] <... write resumed>) = 4 [pid 424] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 421] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 419] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 417] <... futex resumed>) = 0 [pid 425] close(3 [pid 424] <... futex resumed>) = 1 [pid 422] <... futex resumed>) = 0 [pid 425] <... close resumed>) = 0 [pid 424] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 423] <... openat resumed>) = 4 [pid 422] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 421] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 417] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 425] write(1, "executing program\n", 18 [pid 424] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) executing program [pid 423] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 422] <... futex resumed>) = 0 [pid 425] <... write resumed>) = 18 [pid 424] chdir("./file0" [pid 423] <... futex resumed>) = 1 [pid 422] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 421] <... mmap resumed>) = 0x20000000 [pid 419] <... futex resumed>) = 0 [pid 425] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 424] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 423] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 421] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 419] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... restart_syscall resumed>) = 0 [pid 425] <... futex resumed>) = 0 [pid 424] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 421] <... futex resumed>) = 1 [pid 419] <... futex resumed>) = 0 [pid 417] <... futex resumed>) = 0 [pid 425] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 424] <... futex resumed>) = 1 [pid 423] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 422] <... futex resumed>) = 0 [pid 421] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 419] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 417] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 425] <... rt_sigaction resumed>NULL, 8) = 0 [pid 424] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 423] <... mount resumed>) = 0 [pid 422] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 421] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 425] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 424] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 423] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 422] <... futex resumed>) = 0 [pid 421] memfd_create("syzkaller", 0 [pid 417] <... futex resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 425] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 424] creat("./bus", 000 [pid 423] <... futex resumed>) = 1 [pid 422] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 421] <... memfd_create resumed>) = 6 [pid 419] <... futex resumed>) = 0 [pid 417] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 425] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 424] <... creat resumed>) = 3 [pid 423] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 421] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 419] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... openat resumed>) = 3 [pid 425] <... mmap resumed>) = 0x7fe6f87b1000 [pid 424] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 421] <... mmap resumed>) = 0x7fe6f03b1000 [pid 419] <... futex resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 425] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 424] <... futex resumed>) = 1 [pid 423] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 422] <... futex resumed>) = 0 [pid 421] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 419] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... ioctl resumed>) = 0 [pid 425] <... mprotect resumed>) = 0 [pid 424] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 423] <... open resumed>) = 5 [pid 422] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 421] <... write resumed>) = 131072 [pid 306] close(3 [pid 425] rt_sigprocmask(SIG_BLOCK, ~[], [pid 424] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 423] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 422] <... futex resumed>) = 0 [pid 421] munmap(0x7fe6f03b1000, 138412032 [pid 425] <... rt_sigprocmask resumed>[], 8) = 0 [pid 424] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 423] <... futex resumed>) = 1 [pid 422] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 421] <... munmap resumed>) = 0 [pid 419] <... futex resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 425] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 424] <... openat resumed>) = 4 [pid 423] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 421] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 419] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 424] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 421] <... openat resumed>) = 7 [pid 419] <... futex resumed>) = 0 [pid 424] <... futex resumed>) = 1 [pid 422] <... futex resumed>) = 0 [pid 421] ioctl(7, LOOP_SET_FD, 6 [pid 425] <... clone3 resumed> => {parent_tid=[426]}, 88) = 426 [pid 424] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 423] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 422] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 421] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 419] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 425] rt_sigprocmask(SIG_SETMASK, [], [pid 424] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 423] <... mmap resumed>) = 0x20000000 [pid 422] <... futex resumed>) = 0 [pid 421] ioctl(7, LOOP_CLR_FD [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 427 [pid 425] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 424] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 423] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 422] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 421] <... ioctl resumed>) = 0 [pid 425] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 424] <... mount resumed>) = 0 [pid 423] <... futex resumed>) = 1 [pid 419] <... futex resumed>) = 0 [pid 425] <... futex resumed>) = 0 [pid 424] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 419] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 425] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 424] <... futex resumed>) = 1 [pid 422] <... futex resumed>) = 0 [pid 424] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 423] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 422] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 419] <... futex resumed>) = 0 [pid 424] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 422] <... futex resumed>) = 0 [pid 424] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 423] memfd_create("syzkaller", 0 [pid 422] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 419] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 424] <... open resumed>) = 5 [pid 423] <... memfd_create resumed>) = 6 [pid 424] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 421] ioctl(7, LOOP_SET_FD, 6 [pid 424] <... futex resumed>) = 1 [pid 423] <... mmap resumed>) = 0x7fe6f03b1000 [pid 422] <... futex resumed>) = 0 [pid 421] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 424] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 422] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 421] close(7 [pid 424] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 422] <... futex resumed>) = 0 [pid 421] <... close resumed>) = 0 [pid 424] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 422] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 421] close(6./strace-static-x86_64: Process 427 attached [pid 424] <... mmap resumed>) = 0x20000000 [pid 423] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 421] <... close resumed>) = 0 [pid 427] set_robust_list(0x5555636e06a0, 24 [pid 424] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 421] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 427] <... set_robust_list resumed>) = 0 [pid 424] <... futex resumed>) = 1 [pid 422] <... futex resumed>) = 0 [pid 421] <... futex resumed>) = 1 [pid 427] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 424] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 423] <... write resumed>) = 131072 [pid 422] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 421] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 417] <... futex resumed>) = 0 [pid 427] <... prctl resumed>) = 0 [pid 424] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 423] munmap(0x7fe6f03b1000, 138412032 [pid 422] <... futex resumed>) = 0 [pid 417] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 427] setpgid(0, 0 [pid 424] memfd_create("syzkaller", 0 [pid 422] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 427] <... setpgid resumed>) = 0 [pid 424] <... memfd_create resumed>) = 6 [pid 423] <... munmap resumed>) = 0 [pid 421] <... futex resumed>) = 0 [pid 417] <... futex resumed>) = 1 ./strace-static-x86_64: Process 426 attached [pid 427] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 424] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 423] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 421] mknod(0x20000000, 000 [pid 417] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 427] <... openat resumed>) = 3 [pid 424] <... mmap resumed>) = 0x7fe6f03b1000 [pid 423] <... openat resumed>) = 7 [pid 421] <... mknod resumed>) = -1 EEXIST (File exists) [pid 427] write(3, "1000", 4 [pid 426] set_robust_list(0x7fe6f87d19a0, 24 [pid 424] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 423] ioctl(7, LOOP_SET_FD, 6 [pid 421] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 427] <... write resumed>) = 4 [pid 426] <... set_robust_list resumed>) = 0 [pid 424] <... write resumed>) = 131072 [pid 423] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 421] <... futex resumed>) = 1 [pid 417] <... futex resumed>) = 0 [pid 427] close(3 [pid 426] rt_sigprocmask(SIG_SETMASK, [], [pid 424] munmap(0x7fe6f03b1000, 138412032 [pid 423] ioctl(7, LOOP_CLR_FD [pid 421] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 427] <... close resumed>) = 0 [pid 426] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 424] <... munmap resumed>) = 0 [pid 423] <... ioctl resumed>) = 0 [pid 417] exit_group(0executing program [pid 427] write(1, "executing program\n", 18 [pid 426] memfd_create("syzkaller", 0 [pid 424] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 421] <... futex resumed>) = ? [pid 417] <... exit_group resumed>) = ? [pid 427] <... write resumed>) = 18 [pid 426] <... memfd_create resumed>) = 3 [pid 424] <... openat resumed>) = 7 [pid 421] +++ exited with 0 +++ [pid 427] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 424] ioctl(7, LOOP_SET_FD, 6 [pid 427] <... futex resumed>) = 0 [pid 424] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 427] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 424] ioctl(7, LOOP_CLR_FD [pid 417] +++ exited with 0 +++ [pid 426] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 427] <... rt_sigaction resumed>NULL, 8) = 0 [pid 426] <... mmap resumed>) = 0x7fe6f03b1000 [pid 424] <... ioctl resumed>) = 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=417, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 427] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 427] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 423] ioctl(7, LOOP_SET_FD, 6 [pid 303] <... restart_syscall resumed>) = 0 [pid 427] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 423] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 427] <... mmap resumed>) = 0x7fe6f87b1000 [pid 423] close(7 [pid 427] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 423] <... close resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 427] <... mprotect resumed>) = 0 [pid 423] close(6 [pid 303] <... openat resumed>) = 3 [pid 427] rt_sigprocmask(SIG_BLOCK, ~[], [pid 424] ioctl(7, LOOP_SET_FD, 6 [pid 303] ioctl(3, LOOP_CLR_FD [pid 427] <... rt_sigprocmask resumed>[], 8) = 0 [pid 424] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] <... ioctl resumed>) = 0 [pid 427] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 426] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 424] close(7 [pid 423] <... close resumed>) = 0 [pid 303] close(3 [pid 424] <... close resumed>) = 0 [pid 423] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... close resumed>) = 0 [pid 427] <... clone3 resumed> => {parent_tid=[428]}, 88) = 428 [pid 424] close(6 [pid 423] <... futex resumed>) = 1 [pid 419] <... futex resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 427] rt_sigprocmask(SIG_SETMASK, [], [pid 426] <... write resumed>) = 262144 [pid 424] <... close resumed>) = 0 [pid 423] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 419] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 427] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 426] munmap(0x7fe6f03b1000, 138412032 [pid 424] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 419] <... futex resumed>) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 429 [pid 427] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 426] <... munmap resumed>) = 0 [pid 424] <... futex resumed>) = 1 [pid 423] mknod(0x20000000, 000 [pid 422] <... futex resumed>) = 0 [pid 419] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 427] <... futex resumed>) = 0 [pid 426] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 424] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 423] <... mknod resumed>) = -1 EEXIST (File exists) [pid 422] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 427] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 426] <... openat resumed>) = 4 [pid 424] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 423] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 422] <... futex resumed>) = 0 [pid 426] ioctl(4, LOOP_SET_FD, 3 [pid 424] mknod(0x20000000, 000 [pid 423] <... futex resumed>) = 1 [pid 422] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 419] <... futex resumed>) = 0 [pid 426] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 424] <... mknod resumed>) = -1 EEXIST (File exists) [pid 423] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 426] ioctl(4, LOOP_CLR_FD [pid 424] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 419] exit_group(0 [pid 426] <... ioctl resumed>) = 0 [pid 424] <... futex resumed>) = 1 [pid 422] <... futex resumed>) = 0 [pid 424] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 423] <... futex resumed>) = ? [pid 422] exit_group(0 [pid 419] <... exit_group resumed>) = ? [pid 424] <... futex resumed>) = ? [pid 422] <... exit_group resumed>) = ? [pid 424] +++ exited with 0 +++ [pid 422] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=422, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 429 attached [pid 429] set_robust_list(0x5555636e06a0, 24) = 0 [pid 429] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 429] setpgid(0, 0) = 0 [pid 429] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 429] write(3, "1000", 4) = 4 [pid 305] <... restart_syscall resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 305] ioctl(3, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 428 attached [pid 423] +++ exited with 0 +++ [pid 419] +++ exited with 0 +++ [pid 305] close(3 [pid 428] set_robust_list(0x7fe6f87d19a0, 24 [pid 426] ioctl(4, LOOP_SET_FD, 3 [pid 305] <... close resumed>) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=419, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 428] <... set_robust_list resumed>) = 0 [pid 426] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 428] rt_sigprocmask(SIG_SETMASK, [], [pid 426] close(4 [pid 428] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 426] <... close resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 430 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 428] memfd_create("syzkaller", 0 [pid 426] close(3 [pid 302] <... openat resumed>) = 3 [pid 302] ioctl(3, LOOP_CLR_FD) = 0 [pid 302] close(3) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 428] <... memfd_create resumed>) = 3 [pid 426] <... close resumed>) = 0 [pid 428] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 426] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 431 [pid 428] <... mmap resumed>) = 0x7fe6f03b1000 [pid 426] <... futex resumed>) = 1 [pid 425] <... futex resumed>) = 0 [pid 426] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 425] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 426] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 425] <... futex resumed>) = 0 [pid 426] chdir("./file0" [pid 425] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 426] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 426] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 425] <... futex resumed>) = 0 [pid 426] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 425] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 426] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 425] <... futex resumed>) = 0 [pid 426] creat("./bus", 000 [pid 425] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 429] close(3 [pid 426] <... creat resumed>) = 3 [pid 429] <... close resumed>) = 0 [pid 426] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 429] write(1, "executing program\n", 18 [pid 426] <... futex resumed>) = 1 [pid 425] <... futex resumed>) = 0 [pid 429] <... write resumed>) = 18 [pid 426] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 425] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 429] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 426] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 425] <... futex resumed>) = 0 [pid 429] <... futex resumed>) = 0 [pid 426] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 425] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 429] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 426] <... openat resumed>) = 4 [pid 429] <... rt_sigaction resumed>NULL, 8) = 0 [pid 426] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 429] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 428] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 426] <... futex resumed>) = 1 [pid 425] <... futex resumed>) = 0 [pid 426] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 425] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 426] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 425] <... futex resumed>) = 0 [pid 426] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 425] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 429] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 426] <... mount resumed>) = 0 [pid 429] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 426] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 429] <... mmap resumed>) = 0x7fe6f87b1000 [pid 426] <... futex resumed>) = 1 [pid 425] <... futex resumed>) = 0 [pid 426] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 425] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 426] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 429] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 426] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 425] <... futex resumed>) = 0 [pid 429] <... mprotect resumed>) = 0 [pid 426] <... open resumed>) = 5 [pid 425] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 426] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 425] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 426] <... futex resumed>) = 0 [pid 425] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 426] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 425] <... futex resumed>) = 0 [pid 429] rt_sigprocmask(SIG_BLOCK, ~[], [pid 426] <... mmap resumed>) = 0x20000000 [pid 425] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 426] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 425] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 429] <... rt_sigprocmask resumed>[], 8) = 0 [pid 426] <... futex resumed>) = 0 [pid 425] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 429] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 428] <... write resumed>) = 262144 [pid 426] memfd_create("syzkaller", 0 [pid 425] <... futex resumed>) = 0 [pid 428] munmap(0x7fe6f03b1000, 138412032 [pid 426] <... memfd_create resumed>) = 6 [pid 425] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 426] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 429] <... clone3 resumed> => {parent_tid=[432]}, 88) = 432 [pid 426] <... mmap resumed>) = 0x7fe6f03b1000 [pid 428] <... munmap resumed>) = 0 [pid 429] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ./strace-static-x86_64: Process 431 attached [pid 429] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 431] set_robust_list(0x5555636e06a0, 24 [pid 429] <... futex resumed>) = 0 [pid 431] <... set_robust_list resumed>) = 0 [pid 429] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 431] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 431] setpgid(0, 0 [pid 426] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 428] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 431] <... setpgid resumed>) = 0 [pid 431] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 426] <... write resumed>) = 131072 [pid 431] <... openat resumed>) = 3 [pid 428] <... openat resumed>) = 4 [pid 426] munmap(0x7fe6f03b1000, 138412032 [pid 431] write(3, "1000", 4 [pid 426] <... munmap resumed>) = 0 [pid 428] ioctl(4, LOOP_SET_FD, 3 [pid 426] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 431] <... write resumed>) = 4 [pid 428] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 426] <... openat resumed>) = 7 [pid 431] close(3 [pid 426] ioctl(7, LOOP_SET_FD, 6 [pid 428] ioctl(4, LOOP_CLR_FD [pid 426] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 430 attached [pid 431] <... close resumed>) = 0 [pid 428] <... ioctl resumed>) = 0 [pid 426] ioctl(7, LOOP_CLR_FD) = 0 [pid 431] write(1, "executing program\n", 18 [pid 430] set_robust_list(0x5555636e06a0, 24executing program [pid 431] <... write resumed>) = 18 [pid 430] <... set_robust_list resumed>) = 0 [pid 431] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 430] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 431] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 431] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 430] <... prctl resumed>) = 0 [pid 431] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 430] setpgid(0, 0 [pid 428] ioctl(4, LOOP_SET_FD, 3 [pid 426] ioctl(7, LOOP_SET_FD, 6 [pid 431] <... mmap resumed>) = 0x7fe6f87b1000 [pid 430] <... setpgid resumed>) = 0 [pid 428] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 426] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 431] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 428] close(4 [pid 426] close(7 [pid 431] <... mprotect resumed>) = 0 [pid 430] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 428] <... close resumed>) = 0 [pid 426] <... close resumed>) = 0 [pid 431] rt_sigprocmask(SIG_BLOCK, ~[], [pid 430] <... openat resumed>) = 3 [pid 428] close(3 [pid 426] close(6./strace-static-x86_64: Process 432 attached [pid 431] <... rt_sigprocmask resumed>[], 8) = 0 [pid 432] set_robust_list(0x7fe6f87d19a0, 24 [pid 431] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 426] <... close resumed>) = 0 [pid 432] <... set_robust_list resumed>) = 0 [pid 426] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 432] rt_sigprocmask(SIG_SETMASK, [], [pid 431] <... clone3 resumed> => {parent_tid=[433]}, 88) = 433 [pid 426] <... futex resumed>) = 1 [pid 425] <... futex resumed>) = 0 [pid 426] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 425] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 426] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 425] <... futex resumed>) = 0 [pid 426] mknod(0x20000000, 000 [pid 425] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 432] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 431] rt_sigprocmask(SIG_SETMASK, [], [pid 430] write(3, "1000", 4 [pid 428] <... close resumed>) = 0 [pid 426] <... mknod resumed>) = -1 EEXIST (File exists) [pid 432] memfd_create("syzkaller", 0 [pid 431] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 430] <... write resumed>) = 4 [pid 428] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 426] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 432] <... memfd_create resumed>) = 3 [pid 431] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 430] close(3 [pid 428] <... futex resumed>) = 1 [pid 427] <... futex resumed>) = 0 [pid 426] <... futex resumed>) = 1 [pid 425] <... futex resumed>) = 0 [pid 432] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 431] <... futex resumed>) = 0 [pid 430] <... close resumed>) = 0 [pid 428] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 427] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 426] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 425] exit_group(0 [pid 432] <... mmap resumed>) = 0x7fe6f03b1000 [pid 431] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}executing program [pid 430] write(1, "executing program\n", 18 [pid 428] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 427] <... futex resumed>) = 0 [pid 426] <... futex resumed>) = ? [pid 425] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 433 attached [pid 432] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 430] <... write resumed>) = 18 [pid 428] chdir("./file0" [pid 427] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 426] +++ exited with 0 +++ [pid 433] set_robust_list(0x7fe6f87d19a0, 24 [pid 432] <... write resumed>) = 262144 [pid 430] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 428] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 425] +++ exited with 0 +++ [pid 433] <... set_robust_list resumed>) = 0 [pid 430] <... futex resumed>) = 0 [pid 428] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=425, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 433] rt_sigprocmask(SIG_SETMASK, [], [pid 430] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 428] <... futex resumed>) = 1 [pid 427] <... futex resumed>) = 0 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 433] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 430] <... rt_sigaction resumed>NULL, 8) = 0 [pid 428] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 427] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 430] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 428] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 427] <... futex resumed>) = 0 [pid 433] memfd_create("syzkaller", 0 [pid 430] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 428] creat("./bus", 000 [pid 427] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 433] <... memfd_create resumed>) = 3 [pid 432] munmap(0x7fe6f03b1000, 138412032 [pid 430] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 428] <... creat resumed>) = 3 [pid 433] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 432] <... munmap resumed>) = 0 [pid 430] <... mmap resumed>) = 0x7fe6f87b1000 [pid 428] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 430] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 432] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 428] <... futex resumed>) = 1 [pid 427] <... futex resumed>) = 0 [pid 432] <... openat resumed>) = 4 [pid 430] <... mprotect resumed>) = 0 [pid 428] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 427] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 432] ioctl(4, LOOP_SET_FD, 3 [pid 430] rt_sigprocmask(SIG_BLOCK, ~[], [pid 428] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 427] <... futex resumed>) = 0 [pid 432] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 430] <... rt_sigprocmask resumed>[], 8) = 0 [pid 428] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 427] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 432] ioctl(4, LOOP_CLR_FD [pid 430] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 428] <... openat resumed>) = 4 [pid 432] <... ioctl resumed>) = 0 [pid 428] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 430] <... clone3 resumed> => {parent_tid=[434]}, 88) = 434 [pid 428] <... futex resumed>) = 1 [pid 430] rt_sigprocmask(SIG_SETMASK, [], [pid 427] <... futex resumed>) = 0 [pid 430] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 428] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 427] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 430] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 428] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 427] <... futex resumed>) = 0 [pid 433] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 430] <... futex resumed>) = 0 [pid 428] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 427] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 430] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 428] <... mount resumed>) = 0 [pid 428] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 427] <... futex resumed>) = 0 [pid 432] ioctl(4, LOOP_SET_FD, 3 [pid 428] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 427] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 432] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 428] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 427] <... futex resumed>) = 0 [pid 432] close(4 [pid 428] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 427] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 432] <... close resumed>) = 0 [pid 433] <... write resumed>) = 262144 [pid 428] <... open resumed>) = 5 [pid 433] munmap(0x7fe6f03b1000, 138412032 [pid 432] close(3 [pid 428] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 433] <... munmap resumed>) = 0 [pid 432] <... close resumed>) = 0 [pid 428] <... futex resumed>) = 1 [pid 427] <... futex resumed>) = 0 [pid 433] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 432] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 428] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 427] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 433] <... openat resumed>) = 4 [pid 432] <... futex resumed>) = 1 [pid 429] <... futex resumed>) = 0 [pid 428] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 427] <... futex resumed>) = 0 [pid 432] chdir("./file0" [pid 429] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 428] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 427] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 433] ioctl(4, LOOP_SET_FD, 3 [pid 432] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 429] <... futex resumed>) = 0 [pid 428] <... mmap resumed>) = 0x20000000 [pid 433] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 432] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 429] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 428] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 433] ioctl(4, LOOP_CLR_FD [pid 432] <... futex resumed>) = 0 [pid 429] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 428] <... futex resumed>) = 1 [pid 427] <... futex resumed>) = 0 [pid 433] <... ioctl resumed>) = 0 [pid 432] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 429] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 428] memfd_create("syzkaller", 0 [pid 427] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 434 attached [pid 432] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 429] <... futex resumed>) = 0 [pid 428] <... memfd_create resumed>) = 6 [pid 427] <... futex resumed>) = 0 [pid 434] set_robust_list(0x7fe6f87d19a0, 24 [pid 432] creat("./bus", 000 [pid 429] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 428] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 427] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 434] <... set_robust_list resumed>) = 0 [pid 432] <... creat resumed>) = 3 [pid 428] <... mmap resumed>) = 0x7fe6f03b1000 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 434] rt_sigprocmask(SIG_SETMASK, [], [pid 432] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... openat resumed>) = 3 [pid 432] <... futex resumed>) = 1 [pid 429] <... futex resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 432] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 429] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... ioctl resumed>) = 0 [pid 432] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 429] <... futex resumed>) = 0 [pid 304] close(3 [pid 432] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 429] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... close resumed>) = 0 [pid 434] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 433] ioctl(4, LOOP_SET_FD, 3 [pid 432] <... openat resumed>) = 4 [pid 428] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 434] memfd_create("syzkaller", 0 [pid 433] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 432] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 428] <... write resumed>) = 131072 [pid 434] <... memfd_create resumed>) = 3 [pid 433] close(4 [pid 432] <... futex resumed>) = 1 [pid 429] <... futex resumed>) = 0 [pid 428] munmap(0x7fe6f03b1000, 138412032 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 435 [pid 434] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 433] <... close resumed>) = 0 [pid 432] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 429] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 428] <... munmap resumed>) = 0 [pid 434] <... mmap resumed>) = 0x7fe6f03b1000 [pid 433] close(3 [pid 432] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 429] <... futex resumed>) = 0 [pid 428] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 432] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 429] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 428] <... openat resumed>) = 7 [pid 433] <... close resumed>) = 0 [pid 432] <... mount resumed>) = 0 [pid 428] ioctl(7, LOOP_SET_FD, 6 [pid 433] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 432] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 428] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 433] <... futex resumed>) = 1 [pid 432] <... futex resumed>) = 1 [pid 431] <... futex resumed>) = 0 [pid 429] <... futex resumed>) = 0 [pid 428] ioctl(7, LOOP_CLR_FD [pid 433] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 432] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 431] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 429] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 428] <... ioctl resumed>) = 0 [pid 433] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 432] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 431] <... futex resumed>) = 0 [pid 429] <... futex resumed>) = 0 [pid 433] chdir("./file0" [pid 432] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 431] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 429] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 433] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 432] <... open resumed>) = 5 [pid 434] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 433] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 432] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 433] <... futex resumed>) = 1 [pid 432] <... futex resumed>) = 1 [pid 431] <... futex resumed>) = 0 [pid 429] <... futex resumed>) = 0 [pid 433] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 432] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 431] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 429] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 433] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 432] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 431] <... futex resumed>) = 0 [pid 429] <... futex resumed>) = 0 [pid 433] creat("./bus", 000 [pid 432] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 431] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 429] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 428] ioctl(7, LOOP_SET_FD, 6 [pid 433] <... creat resumed>) = 3 [pid 432] <... mmap resumed>) = 0x20000000 [pid 433] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 432] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 428] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 433] <... futex resumed>) = 1 [pid 432] <... futex resumed>) = 1 [pid 431] <... futex resumed>) = 0 [pid 429] <... futex resumed>) = 0 [pid 428] close(7 [pid 434] <... write resumed>) = 262144 [pid 433] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 432] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 431] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 429] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 434] munmap(0x7fe6f03b1000, 138412032 [pid 433] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 432] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 431] <... futex resumed>) = 0 [pid 429] <... futex resumed>) = 0 [pid 428] <... close resumed>) = 0 [pid 434] <... munmap resumed>) = 0 [pid 433] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 432] memfd_create("syzkaller", 0 [pid 431] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 429] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 434] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 433] <... openat resumed>) = 4 [pid 432] <... memfd_create resumed>) = 6 [pid 428] close(6 [pid 433] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 432] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 ./strace-static-x86_64: Process 435 attached [pid 434] <... openat resumed>) = 4 [pid 433] <... futex resumed>) = 1 [pid 432] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 431] <... futex resumed>) = 0 [pid 428] <... close resumed>) = 0 [pid 435] set_robust_list(0x5555636e06a0, 24 [pid 434] ioctl(4, LOOP_SET_FD, 3 [pid 433] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 432] <... write resumed>) = 131072 [pid 431] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 428] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 435] <... set_robust_list resumed>) = 0 [pid 434] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 433] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 432] munmap(0x7fe6f03b1000, 138412032 [pid 431] <... futex resumed>) = 0 [pid 428] <... futex resumed>) = 1 [pid 427] <... futex resumed>) = 0 [pid 435] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 434] ioctl(4, LOOP_CLR_FD [pid 433] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 432] <... munmap resumed>) = 0 [pid 431] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 428] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 427] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 435] <... prctl resumed>) = 0 [pid 434] <... ioctl resumed>) = 0 [pid 433] <... mount resumed>) = 0 [pid 432] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 428] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 427] <... futex resumed>) = 0 [pid 435] setpgid(0, 0 [pid 433] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 432] <... openat resumed>) = 7 [pid 428] mknod(0x20000000, 000 [pid 427] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 435] <... setpgid resumed>) = 0 [pid 433] <... futex resumed>) = 1 [pid 432] ioctl(7, LOOP_SET_FD, 6 [pid 431] <... futex resumed>) = 0 [pid 428] <... mknod resumed>) = -1 EEXIST (File exists) [pid 435] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 433] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 432] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 431] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 428] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 435] <... openat resumed>) = 3 [pid 433] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 432] ioctl(7, LOOP_CLR_FD [pid 431] <... futex resumed>) = 0 [pid 428] <... futex resumed>) = 1 [pid 427] <... futex resumed>) = 0 [pid 435] write(3, "1000", 4 [pid 434] ioctl(4, LOOP_SET_FD, 3 [pid 433] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 432] <... ioctl resumed>) = 0 [pid 431] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 428] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 427] exit_group(0 [pid 435] <... write resumed>) = 4 [pid 434] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 433] <... open resumed>) = 5 [pid 428] <... futex resumed>) = ? [pid 427] <... exit_group resumed>) = ? [pid 435] close(3 [pid 434] close(4 [pid 433] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 428] +++ exited with 0 +++ executing program [pid 435] <... close resumed>) = 0 [pid 435] write(1, "executing program\n", 18) = 18 [pid 435] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 435] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 433] <... futex resumed>) = 1 [pid 431] <... futex resumed>) = 0 [pid 427] +++ exited with 0 +++ [pid 435] <... rt_sigaction resumed>NULL, 8) = 0 [pid 434] <... close resumed>) = 0 [pid 433] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 431] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 435] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 434] close(3 [pid 433] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 432] ioctl(7, LOOP_SET_FD, 6 [pid 431] <... futex resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=427, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 435] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 432] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 431] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 435] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 432] close(7 [pid 435] <... mmap resumed>) = 0x7fe6f87b1000 [pid 434] <... close resumed>) = 0 [pid 433] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 432] <... close resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 435] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 434] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 432] close(6 [pid 435] <... mprotect resumed>) = 0 [pid 434] <... futex resumed>) = 1 [pid 433] <... mmap resumed>) = 0x20000000 [pid 432] <... close resumed>) = 0 [pid 430] <... futex resumed>) = 0 [pid 435] rt_sigprocmask(SIG_BLOCK, ~[], [pid 434] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 433] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 432] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 430] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 435] <... rt_sigprocmask resumed>[], 8) = 0 [pid 434] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 433] <... futex resumed>) = 1 [pid 432] <... futex resumed>) = 1 [pid 431] <... futex resumed>) = 0 [pid 430] <... futex resumed>) = 0 [pid 429] <... futex resumed>) = 0 [pid 435] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 434] chdir("./file0" [pid 433] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 432] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 431] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 430] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 429] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 434] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 433] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 432] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 431] <... futex resumed>) = 0 [pid 429] <... futex resumed>) = 0 [pid 435] <... clone3 resumed> => {parent_tid=[436]}, 88) = 436 [pid 434] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 433] memfd_create("syzkaller", 0 [pid 432] mknod(0x20000000, 000 [pid 431] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 429] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 435] rt_sigprocmask(SIG_SETMASK, [], [pid 434] <... futex resumed>) = 1 [pid 433] <... memfd_create resumed>) = 6 [pid 432] <... mknod resumed>) = -1 EEXIST (File exists) [pid 430] <... futex resumed>) = 0 [pid 435] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 434] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 433] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 432] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 430] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 435] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 434] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 433] <... mmap resumed>) = 0x7fe6f03b1000 [pid 432] <... futex resumed>) = 1 [pid 430] <... futex resumed>) = 0 [pid 429] <... futex resumed>) = 0 [pid 435] <... futex resumed>) = 0 [pid 434] creat("./bus", 000 [pid 432] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 429] exit_group(0 [pid 435] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 432] <... futex resumed>) = ? [pid 429] <... exit_group resumed>) = ? [pid 434] <... creat resumed>) = 3 [pid 433] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 432] +++ exited with 0 +++ [pid 430] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 429] +++ exited with 0 +++ ./strace-static-x86_64: Process 436 attached [pid 434] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... restart_syscall resumed>) = 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=429, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 436] set_robust_list(0x7fe6f87d19a0, 24 [pid 434] <... futex resumed>) = 0 [pid 433] <... write resumed>) = 131072 [pid 430] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 436] <... set_robust_list resumed>) = 0 [pid 434] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 433] munmap(0x7fe6f03b1000, 138412032 [pid 430] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 434] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 430] <... futex resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 436] rt_sigprocmask(SIG_SETMASK, [], [pid 434] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 433] <... munmap resumed>) = 0 [pid 430] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... openat resumed>) = 3 [pid 436] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 436] memfd_create("syzkaller", 0 [pid 434] <... openat resumed>) = 4 [pid 433] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 306] ioctl(3, LOOP_CLR_FD [pid 436] <... memfd_create resumed>) = 3 [pid 434] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 433] <... openat resumed>) = 7 [pid 306] <... ioctl resumed>) = 0 [pid 436] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 434] <... futex resumed>) = 1 [pid 433] ioctl(7, LOOP_SET_FD, 6 [pid 430] <... futex resumed>) = 0 [pid 306] close(3 [pid 436] <... mmap resumed>) = 0x7fe6f03b1000 [pid 434] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 433] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 430] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... close resumed>) = 0 [pid 436] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 434] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 433] ioctl(7, LOOP_CLR_FD [pid 430] <... futex resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 436] <... write resumed>) = 262144 [pid 434] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 433] <... ioctl resumed>) = 0 [pid 430] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 436] munmap(0x7fe6f03b1000, 138412032 [pid 434] <... mount resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 437 [pid 303] <... restart_syscall resumed>) = 0 [pid 436] <... munmap resumed>) = 0 [pid 434] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 436] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 434] <... futex resumed>) = 1 [pid 430] <... futex resumed>) = 0 [pid 436] <... openat resumed>) = 4 [pid 434] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 430] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 436] ioctl(4, LOOP_SET_FD, 3 [pid 434] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 430] <... futex resumed>) = 0 [pid 436] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 434] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 430] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 436] ioctl(4, LOOP_CLR_FD [pid 434] <... open resumed>) = 5 [pid 436] <... ioctl resumed>) = 0 [pid 434] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... openat resumed>) = 3 [pid 434] <... futex resumed>) = 1 [pid 430] <... futex resumed>) = 0 [pid 303] ioctl(3, LOOP_CLR_FD [pid 434] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 433] ioctl(7, LOOP_SET_FD, 6 [pid 430] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... ioctl resumed>) = 0 [pid 434] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 433] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 430] <... futex resumed>) = 0 [pid 303] close(3 [pid 434] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 433] close(7 [pid 430] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 434] <... mmap resumed>) = 0x20000000 [pid 433] <... close resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 434] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 433] close(6 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 434] <... futex resumed>) = 1 [pid 433] <... close resumed>) = 0 [pid 430] <... futex resumed>) = 0 ./strace-static-x86_64: Process 438 attached ./strace-static-x86_64: Process 437 attached [pid 436] ioctl(4, LOOP_SET_FD, 3 [pid 434] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 433] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 430] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 437] set_robust_list(0x5555636e06a0, 24 [pid 436] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 434] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 433] <... futex resumed>) = 1 [pid 431] <... futex resumed>) = 0 [pid 430] <... futex resumed>) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 438 [pid 438] set_robust_list(0x5555636e06a0, 24 [pid 437] <... set_robust_list resumed>) = 0 [pid 436] close(4 [pid 434] memfd_create("syzkaller", 0 [pid 433] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 431] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 430] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 438] <... set_robust_list resumed>) = 0 [pid 437] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 436] <... close resumed>) = 0 [pid 434] <... memfd_create resumed>) = 6 [pid 433] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 431] <... futex resumed>) = 0 [pid 438] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 437] <... prctl resumed>) = 0 [pid 436] close(3 [pid 434] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 433] mknod(0x20000000, 000 [pid 431] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 438] <... prctl resumed>) = 0 [pid 437] setpgid(0, 0 [pid 438] setpgid(0, 0 [pid 436] <... close resumed>) = 0 [pid 434] <... mmap resumed>) = 0x7fe6f03b1000 [pid 433] <... mknod resumed>) = -1 EEXIST (File exists) [pid 438] <... setpgid resumed>) = 0 [pid 437] <... setpgid resumed>) = 0 [pid 436] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 438] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 438] write(3, "1000", 4) = 4 [pid 438] close(3) = 0 [pid 438] write(1, "executing program\n", 18executing program ) = 18 [pid 436] <... futex resumed>) = 1 [pid 437] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 435] <... futex resumed>) = 0 [pid 434] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 433] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 438] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 437] <... openat resumed>) = 3 [pid 436] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 435] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 438] <... futex resumed>) = 0 [pid 435] <... futex resumed>) = 0 [pid 438] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 435] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 438] <... rt_sigaction resumed>NULL, 8) = 0 [pid 437] write(3, "1000", 4 [pid 436] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 434] <... write resumed>) = 131072 [pid 433] <... futex resumed>) = 1 [pid 431] <... futex resumed>) = 0 [pid 438] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 437] <... write resumed>) = 4 [pid 436] chdir("./file0" [pid 434] munmap(0x7fe6f03b1000, 138412032 [pid 433] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 431] exit_group(0 [pid 438] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 437] close(3 [pid 436] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 434] <... munmap resumed>) = 0 [pid 433] <... futex resumed>) = ? [pid 431] <... exit_group resumed>) = ? [pid 438] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 437] <... close resumed>) = 0 [pid 436] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 438] <... mmap resumed>) = 0x7fe6f87b1000 [pid 438] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 438] rt_sigprocmask(SIG_BLOCK, ~[], executing program [pid 437] write(1, "executing program\n", 18 [pid 436] <... futex resumed>) = 1 [pid 435] <... futex resumed>) = 0 [pid 434] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 433] +++ exited with 0 +++ [pid 431] +++ exited with 0 +++ [pid 438] <... rt_sigprocmask resumed>[], 8) = 0 [pid 437] <... write resumed>) = 18 [pid 436] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 435] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 434] <... openat resumed>) = 7 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=431, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 438] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 437] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 436] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 435] <... futex resumed>) = 0 [pid 434] ioctl(7, LOOP_SET_FD, 6 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 437] <... futex resumed>) = 0 [pid 436] creat("./bus", 000 [pid 435] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 434] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 438] <... clone3 resumed> => {parent_tid=[439]}, 88) = 439 [pid 437] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 436] <... creat resumed>) = 3 [pid 434] ioctl(7, LOOP_CLR_FD [pid 438] rt_sigprocmask(SIG_SETMASK, [], [pid 437] <... rt_sigaction resumed>NULL, 8) = 0 [pid 436] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 434] <... ioctl resumed>) = 0 [pid 438] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 437] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 436] <... futex resumed>) = 1 [pid 435] <... futex resumed>) = 0 [pid 438] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 437] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 436] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 435] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 438] <... futex resumed>) = 0 [pid 437] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 436] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 435] <... futex resumed>) = 0 [pid 438] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 437] <... mmap resumed>) = 0x7fe6f87b1000 [pid 436] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 435] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 437] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 436] <... openat resumed>) = 4 ./strace-static-x86_64: Process 439 attached [pid 437] rt_sigprocmask(SIG_BLOCK, ~[], [pid 436] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 437] <... rt_sigprocmask resumed>[], 8) = 0 [pid 436] <... futex resumed>) = 1 [pid 437] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 435] <... futex resumed>) = 0 [pid 436] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 435] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 434] ioctl(7, LOOP_SET_FD, 6 [pid 437] <... clone3 resumed> => {parent_tid=[440]}, 88) = 440 [pid 436] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 435] <... futex resumed>) = 0 [pid 434] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 437] rt_sigprocmask(SIG_SETMASK, [], [pid 436] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 435] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 434] close(7 [pid 437] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 436] <... mount resumed>) = 0 [pid 437] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 436] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 434] <... close resumed>) = 0 [pid 437] <... futex resumed>) = 0 [pid 436] <... futex resumed>) = 1 [pid 435] <... futex resumed>) = 0 [pid 434] close(6 [pid 437] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 436] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 435] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 436] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 435] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 434] <... close resumed>) = 0 [pid 436] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 434] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 436] <... open resumed>) = 5 [pid 434] <... futex resumed>) = 1 [pid 430] <... futex resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 439] set_robust_list(0x7fe6f87d19a0, 24 [pid 436] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 434] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 430] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... openat resumed>) = 3 [pid 439] <... set_robust_list resumed>) = 0 [pid 436] <... futex resumed>) = 1 [pid 435] <... futex resumed>) = 0 [pid 434] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 430] <... futex resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 439] rt_sigprocmask(SIG_SETMASK, [], [pid 436] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 435] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 434] mknod(0x20000000, 000 [pid 430] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] <... ioctl resumed>) = 0 [pid 439] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 436] <... mmap resumed>) = 0x20000000 [pid 435] <... futex resumed>) = 0 [pid 434] <... mknod resumed>) = -1 EEXIST (File exists) [pid 302] close(3 [pid 439] memfd_create("syzkaller", 0 [pid 436] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 435] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 434] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... close resumed>) = 0 [pid 439] <... memfd_create resumed>) = 3 [pid 436] <... futex resumed>) = 0 [pid 435] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 434] <... futex resumed>) = 1 [pid 430] <... futex resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 439] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 436] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 435] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 434] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 430] exit_group(0./strace-static-x86_64: Process 440 attached [pid 439] <... mmap resumed>) = 0x7fe6f03b1000 [pid 436] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 435] <... futex resumed>) = 0 [pid 434] <... futex resumed>) = ? [pid 430] <... exit_group resumed>) = ? [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 441 [pid 440] set_robust_list(0x7fe6f87d19a0, 24 [pid 439] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 436] memfd_create("syzkaller", 0 [pid 435] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 434] +++ exited with 0 +++ [pid 440] <... set_robust_list resumed>) = 0 [pid 439] <... write resumed>) = 262144 [pid 436] <... memfd_create resumed>) = 6 [pid 430] +++ exited with 0 +++ [pid 440] rt_sigprocmask(SIG_SETMASK, [], [pid 436] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=430, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 440] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 436] <... mmap resumed>) = 0x7fe6f03b1000 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 439] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 439] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 439] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 439] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 441 attached [pid 436] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 441] set_robust_list(0x5555636e06a0, 24) = 0 [pid 441] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 440] memfd_create("syzkaller", 0 [pid 436] <... write resumed>) = 131072 [pid 440] <... memfd_create resumed>) = 3 [pid 436] munmap(0x7fe6f03b1000, 138412032 [pid 440] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 436] <... munmap resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 439] ioctl(4, LOOP_SET_FD, 3 [pid 436] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 439] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 436] <... openat resumed>) = 7 [pid 439] close(4 [pid 436] ioctl(7, LOOP_SET_FD, 6 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 439] <... close resumed>) = 0 [pid 436] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] <... openat resumed>) = 3 [pid 439] close(3 [pid 436] ioctl(7, LOOP_CLR_FD [pid 305] ioctl(3, LOOP_CLR_FD [pid 440] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 439] <... close resumed>) = 0 [pid 436] <... ioctl resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 439] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] close(3 [pid 439] <... futex resumed>) = 1 [pid 438] <... futex resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 439] chdir("./file0" [pid 438] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 440] <... write resumed>) = 262144 [pid 439] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 438] <... futex resumed>) = 0 [pid 439] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 438] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 443 [pid 439] <... futex resumed>) = 0 [pid 438] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 439] creat("./bus", 000 [pid 438] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 439] <... creat resumed>) = 3 [pid 438] <... futex resumed>) = 0 [pid 439] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 438] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 439] <... futex resumed>) = 0 [pid 438] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 439] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 438] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 439] <... openat resumed>) = 4 [pid 438] <... futex resumed>) = 0 [pid 439] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 438] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 441] <... prctl resumed>) = 0 [pid 439] <... futex resumed>) = 0 [pid 438] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 441] setpgid(0, 0 [pid 439] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 438] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 441] <... setpgid resumed>) = 0 [pid 439] <... mount resumed>) = 0 [pid 438] <... futex resumed>) = 0 [pid 441] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 439] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 438] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 441] <... openat resumed>) = 3 [pid 439] <... futex resumed>) = 0 [pid 438] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 441] write(3, "1000", 4 [pid 439] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 438] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 441] <... write resumed>) = 4 [pid 439] <... open resumed>) = 5 [pid 438] <... futex resumed>) = 0 [pid 436] ioctl(7, LOOP_SET_FD, 6 [pid 441] close(3 [pid 440] munmap(0x7fe6f03b1000, 138412032 [pid 439] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 438] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 436] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 441] <... close resumed>) = 0 [pid 439] <... futex resumed>) = 0 [pid 438] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 436] close(7executing program [pid 441] write(1, "executing program\n", 18 [pid 440] <... munmap resumed>) = 0 [pid 439] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 438] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 436] <... close resumed>) = 0 [pid 441] <... write resumed>) = 18 [pid 440] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 439] <... mmap resumed>) = 0x20000000 [pid 438] <... futex resumed>) = 0 [pid 436] close(6 [pid 441] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 439] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 438] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 441] <... futex resumed>) = 0 [pid 439] <... futex resumed>) = 0 [pid 438] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 436] <... close resumed>) = 0 [pid 441] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 440] <... openat resumed>) = 4 [pid 439] memfd_create("syzkaller", 0 [pid 438] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 436] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 441] <... rt_sigaction resumed>NULL, 8) = 0 [pid 439] <... memfd_create resumed>) = 6 [pid 438] <... futex resumed>) = 0 [pid 441] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 440] ioctl(4, LOOP_SET_FD, 3 [pid 439] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 438] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 436] <... futex resumed>) = 1 [pid 435] <... futex resumed>) = 0 [pid 441] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 440] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 439] <... mmap resumed>) = 0x7fe6f03b1000 [pid 436] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 435] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 441] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 440] ioctl(4, LOOP_CLR_FD [pid 439] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 436] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 435] <... futex resumed>) = 0 [pid 441] <... mmap resumed>) = 0x7fe6f87b1000 [pid 440] <... ioctl resumed>) = 0 [pid 439] <... write resumed>) = 131072 [pid 436] mknod(0x20000000, 000 [pid 435] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 441] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 439] munmap(0x7fe6f03b1000, 138412032 [pid 436] <... mknod resumed>) = -1 EEXIST (File exists) [pid 441] <... mprotect resumed>) = 0 [pid 439] <... munmap resumed>) = 0 [pid 436] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 443 attached [pid 441] rt_sigprocmask(SIG_BLOCK, ~[], [pid 439] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 436] <... futex resumed>) = 1 [pid 435] <... futex resumed>) = 0 [pid 436] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 443] set_robust_list(0x5555636e06a0, 24 [pid 441] <... rt_sigprocmask resumed>[], 8) = 0 [pid 439] <... openat resumed>) = 7 [pid 435] exit_group(0 [pid 443] <... set_robust_list resumed>) = 0 [pid 441] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 443] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 440] ioctl(4, LOOP_SET_FD, 3 [pid 439] ioctl(7, LOOP_SET_FD, 6 [pid 436] <... futex resumed>) = ? [pid 435] <... exit_group resumed>) = ? [pid 443] <... prctl resumed>) = 0 [pid 441] <... clone3 resumed> => {parent_tid=[444]}, 88) = 444 [pid 440] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 443] setpgid(0, 0 [pid 441] rt_sigprocmask(SIG_SETMASK, [], [pid 439] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 436] +++ exited with 0 +++ [pid 443] <... setpgid resumed>) = 0 [pid 441] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 439] ioctl(7, LOOP_CLR_FD [pid 443] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 441] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 440] close(4 [pid 439] <... ioctl resumed>) = 0 [pid 435] +++ exited with 0 +++ [pid 443] <... openat resumed>) = 3 [pid 441] <... futex resumed>) = 0 [pid 440] <... close resumed>) = 0 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=435, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 443] write(3, "1000", 4 [pid 441] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 440] close(3 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 443] <... write resumed>) = 4 [pid 443] close(3executing program ) = 0 [pid 443] write(1, "executing program\n", 18) = 18 [pid 443] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 440] <... close resumed>) = 0 [pid 443] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 440] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 439] ioctl(7, LOOP_SET_FD, 6 [pid 443] <... rt_sigaction resumed>NULL, 8) = 0 [pid 440] <... futex resumed>) = 1 [pid 439] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 437] <... futex resumed>) = 0 ./strace-static-x86_64: Process 444 attached [pid 443] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 440] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 439] close(7 [pid 444] set_robust_list(0x7fe6f87d19a0, 24 [pid 443] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 440] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 439] <... close resumed>) = 0 [pid 437] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 444] <... set_robust_list resumed>) = 0 [pid 443] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 440] chdir("./file0" [pid 439] close(6 [pid 437] <... futex resumed>) = 0 [pid 444] rt_sigprocmask(SIG_SETMASK, [], [pid 443] <... mmap resumed>) = 0x7fe6f87b1000 [pid 440] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 439] <... close resumed>) = 0 [pid 437] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 444] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 443] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 440] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 439] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 437] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 444] memfd_create("syzkaller", 0 [pid 443] <... mprotect resumed>) = 0 [pid 440] <... futex resumed>) = 0 [pid 439] <... futex resumed>) = 1 [pid 438] <... futex resumed>) = 0 [pid 437] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 444] <... memfd_create resumed>) = 3 [pid 443] rt_sigprocmask(SIG_BLOCK, ~[], [pid 440] creat("./bus", 000 [pid 439] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 438] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 437] <... futex resumed>) = 0 [pid 444] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 443] <... rt_sigprocmask resumed>[], 8) = 0 [pid 440] <... creat resumed>) = 3 [pid 439] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 438] <... futex resumed>) = 0 [pid 437] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 443] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 440] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 439] mknod(0x20000000, 000 [pid 438] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 444] <... mmap resumed>) = 0x7fe6f03b1000 [pid 440] <... futex resumed>) = 0 [pid 439] <... mknod resumed>) = -1 EEXIST (File exists) [pid 437] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 443] <... clone3 resumed> => {parent_tid=[445]}, 88) = 445 [pid 440] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 439] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 437] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 443] rt_sigprocmask(SIG_SETMASK, [], [pid 440] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 439] <... futex resumed>) = 1 [pid 438] <... futex resumed>) = 0 [pid 437] <... futex resumed>) = 0 [pid 443] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 440] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 439] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 438] exit_group(0 [pid 437] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 443] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 439] <... futex resumed>) = ? [pid 438] <... exit_group resumed>) = ? [pid 444] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 443] <... futex resumed>) = 0 [pid 440] <... openat resumed>) = 4 [pid 439] +++ exited with 0 +++ [pid 438] +++ exited with 0 +++ [pid 304] <... restart_syscall resumed>) = 0 [pid 443] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 440] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=438, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 440] <... futex resumed>) = 1 [pid 437] <... futex resumed>) = 0 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 440] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 437] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 444] <... write resumed>) = 262144 [pid 440] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 437] <... futex resumed>) = 0 [pid 304] <... openat resumed>) = 3 [pid 444] munmap(0x7fe6f03b1000, 138412032 [pid 440] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 437] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] ioctl(3, LOOP_CLR_FD [pid 440] <... mount resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 444] <... munmap resumed>) = 0 [pid 440] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] close(3 [pid 444] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 440] <... futex resumed>) = 1 [pid 437] <... futex resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 444] <... openat resumed>) = 4 [pid 440] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 437] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 444] ioctl(4, LOOP_SET_FD, 3 [pid 440] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 437] <... futex resumed>) = 0 [pid 444] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 440] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 437] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 446 [pid 444] ioctl(4, LOOP_CLR_FD [pid 440] <... open resumed>) = 5 [pid 444] <... ioctl resumed>) = 0 [pid 440] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 437] <... futex resumed>) = 0 [pid 440] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 437] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 440] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 437] <... futex resumed>) = 0 [pid 440] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 437] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 440] <... mmap resumed>) = 0x20000000 [pid 440] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 437] <... futex resumed>) = 0 [pid 440] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 437] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 440] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 437] <... futex resumed>) = 0 ./strace-static-x86_64: Process 445 attached [pid 440] memfd_create("syzkaller", 0 [pid 437] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 445] set_robust_list(0x7fe6f87d19a0, 24 [pid 444] ioctl(4, LOOP_SET_FD, 3 [pid 445] <... set_robust_list resumed>) = 0 [pid 444] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 440] <... memfd_create resumed>) = 6 [pid 445] rt_sigprocmask(SIG_SETMASK, [], [pid 444] close(4 [pid 440] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 444] <... close resumed>) = 0 [pid 445] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 444] close(3 [pid 440] <... mmap resumed>) = 0x7fe6f03b1000 ./strace-static-x86_64: Process 446 attached [pid 446] set_robust_list(0x5555636e06a0, 24) = 0 [pid 446] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 446] setpgid(0, 0) = 0 [pid 446] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 303] <... restart_syscall resumed>) = 0 [pid 440] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 303] ioctl(3, LOOP_CLR_FD) = 0 [pid 303] close(3 [pid 440] <... write resumed>) = 131072 [pid 303] <... close resumed>) = 0 [pid 440] munmap(0x7fe6f03b1000, 138412032 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 440] <... munmap resumed>) = 0 [pid 444] <... close resumed>) = 0 [pid 440] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 447 [pid 445] memfd_create("syzkaller", 0 [pid 444] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 440] <... openat resumed>) = 7 [pid 445] <... memfd_create resumed>) = 3 [pid 444] <... futex resumed>) = 1 [pid 441] <... futex resumed>) = 0 [pid 440] ioctl(7, LOOP_SET_FD, 6 [pid 445] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 444] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 441] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 440] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 445] <... mmap resumed>) = 0x7fe6f03b1000 [pid 444] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 441] <... futex resumed>) = 0 [pid 440] ioctl(7, LOOP_CLR_FD [pid 444] chdir("./file0" [pid 441] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 444] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 440] <... ioctl resumed>) = 0 [pid 444] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 441] <... futex resumed>) = 0 [pid 444] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 441] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 444] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 441] <... futex resumed>) = 0 [pid 444] creat("./bus", 000 [pid 441] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 444] <... creat resumed>) = 3 [pid 446] <... openat resumed>) = 3 [pid 444] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 446] write(3, "1000", 4 [pid 444] <... futex resumed>) = 1 [pid 441] <... futex resumed>) = 0 [pid 444] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 441] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 440] ioctl(7, LOOP_SET_FD, 6 [pid 444] <... openat resumed>) = 4 [pid 441] <... futex resumed>) = 0 [pid 446] <... write resumed>) = 4 [pid 444] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 441] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 440] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 446] close(3 [pid 444] <... futex resumed>) = 0 [pid 441] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 446] <... close resumed>) = 0 [pid 444] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 441] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 440] close(7 [pid 446] write(1, "executing program\n", 18 [pid 444] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 441] <... futex resumed>) = 0 [pid 446] <... write resumed>) = 18 [pid 444] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 441] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 440] <... close resumed>) = 0 [pid 446] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 444] <... mount resumed>) = 0 [pid 440] close(6 [pid 444] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 446] <... futex resumed>) = 0 [pid 446] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 444] <... futex resumed>) = 1 [pid 441] <... futex resumed>) = 0 [pid 440] <... close resumed>) = 0 [pid 446] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 444] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 441] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 440] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 446] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 444] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 441] <... futex resumed>) = 0 [pid 446] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 444] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 441] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 440] <... futex resumed>) = 1 [pid 437] <... futex resumed>) = 0 [pid 446] <... mmap resumed>) = 0x7fe6f87b1000 [pid 444] <... open resumed>) = 5 [pid 440] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 437] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 446] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 444] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 440] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 437] <... futex resumed>) = 0 [pid 446] <... mprotect resumed>) = 0 [pid 445] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 444] <... futex resumed>) = 1 [pid 441] <... futex resumed>) = 0 [pid 440] mknod(0x20000000, 000 [pid 437] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 446] rt_sigprocmask(SIG_BLOCK, ~[], [pid 444] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 441] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 440] <... mknod resumed>) = -1 EEXIST (File exists) [pid 446] <... rt_sigprocmask resumed>[], 8) = 0 [pid 444] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 441] <... futex resumed>) = 0 [pid 440] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 446] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 444] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 441] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 440] <... futex resumed>) = 1 [pid 437] <... futex resumed>) = 0 [pid 444] <... mmap resumed>) = 0x20000000 [pid 440] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 437] exit_group(0 [pid 446] <... clone3 resumed> => {parent_tid=[448]}, 88) = 448 [pid 444] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 440] <... futex resumed>) = ? [pid 437] <... exit_group resumed>) = ? [pid 441] <... futex resumed>) = 0 ./strace-static-x86_64: Process 447 attached [pid 446] rt_sigprocmask(SIG_SETMASK, [], [pid 440] +++ exited with 0 +++ [pid 447] set_robust_list(0x5555636e06a0, 24 [pid 446] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 447] <... set_robust_list resumed>) = 0 [pid 446] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 447] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 446] <... futex resumed>) = 0 [pid 444] <... futex resumed>) = 1 [pid 441] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 437] +++ exited with 0 +++ [pid 447] <... prctl resumed>) = 0 [pid 446] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 445] <... write resumed>) = 262144 [pid 441] <... futex resumed>) = 0 [pid 447] setpgid(0, 0 [pid 444] memfd_create("syzkaller", 0 [pid 441] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 445] munmap(0x7fe6f03b1000, 138412032 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=437, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 447] <... setpgid resumed>) = 0 [pid 444] <... memfd_create resumed>) = 6 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 445] <... munmap resumed>) = 0 [pid 444] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 447] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 445] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 444] <... mmap resumed>) = 0x7fe6f03b1000 [pid 447] <... openat resumed>) = 3 [pid 306] <... restart_syscall resumed>) = 0 [pid 447] write(3, "1000", 4) = 4 [pid 447] close(3) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWRexecuting program [pid 447] write(1, "executing program\n", 18 [pid 306] <... openat resumed>) = 3 [pid 447] <... write resumed>) = 18 [pid 306] ioctl(3, LOOP_CLR_FD [pid 447] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... ioctl resumed>) = 0 [pid 447] <... futex resumed>) = 0 [pid 444] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 306] close(3 [pid 445] <... openat resumed>) = 4 [pid 306] <... close resumed>) = 0 [pid 447] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 447] <... rt_sigaction resumed>NULL, 8) = 0 [pid 447] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 447] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 445] ioctl(4, LOOP_SET_FD, 3 [pid 444] <... write resumed>) = 131072 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 449 [pid 447] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 445] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 444] munmap(0x7fe6f03b1000, 138412032 [pid 447] <... mprotect resumed>) = 0 [pid 445] ioctl(4, LOOP_CLR_FD [pid 444] <... munmap resumed>) = 0 [pid 447] rt_sigprocmask(SIG_BLOCK, ~[], [pid 445] <... ioctl resumed>) = 0 [pid 444] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 448 attached [pid 447] <... rt_sigprocmask resumed>[], 8) = 0 [pid 444] <... openat resumed>) = 7 [pid 448] set_robust_list(0x7fe6f87d19a0, 24 [pid 447] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 444] ioctl(7, LOOP_SET_FD, 6 [pid 448] <... set_robust_list resumed>) = 0 [pid 444] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 448] rt_sigprocmask(SIG_SETMASK, [], [pid 447] <... clone3 resumed> => {parent_tid=[450]}, 88) = 450 [pid 444] ioctl(7, LOOP_CLR_FD [pid 448] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 447] rt_sigprocmask(SIG_SETMASK, [], [pid 444] <... ioctl resumed>) = 0 [pid 448] memfd_create("syzkaller", 0 [pid 447] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 448] <... memfd_create resumed>) = 3 [pid 447] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 448] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 447] <... futex resumed>) = 0 [pid 448] <... mmap resumed>) = 0x7fe6f03b1000 [pid 447] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 449 attached [pid 448] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 445] ioctl(4, LOOP_SET_FD, 3 [pid 449] set_robust_list(0x5555636e06a0, 24 [pid 445] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 444] ioctl(7, LOOP_SET_FD, 6 [pid 449] <... set_robust_list resumed>) = 0 [pid 445] close(4 [pid 444] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 449] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 445] <... close resumed>) = 0 [pid 444] close(7 [pid 449] <... prctl resumed>) = 0 [pid 445] close(3 [pid 444] <... close resumed>) = 0 [pid 449] setpgid(0, 0 [pid 448] <... write resumed>) = 262144 [pid 445] <... close resumed>) = 0 [pid 444] close(6 [pid 449] <... setpgid resumed>) = 0 [pid 445] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 450 attached [pid 448] munmap(0x7fe6f03b1000, 138412032 [pid 444] <... close resumed>) = 0 [pid 450] set_robust_list(0x7fe6f87d19a0, 24 [pid 444] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 448] <... munmap resumed>) = 0 [pid 444] <... futex resumed>) = 1 [pid 441] <... futex resumed>) = 0 [pid 444] mknod(0x20000000, 000 [pid 441] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 450] <... set_robust_list resumed>) = 0 [pid 448] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 444] <... mknod resumed>) = -1 EEXIST (File exists) [pid 441] <... futex resumed>) = 0 [pid 444] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 441] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 444] <... futex resumed>) = 0 [pid 441] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 450] rt_sigprocmask(SIG_SETMASK, [], [pid 448] <... openat resumed>) = 4 [pid 444] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 441] exit_group(0 [pid 450] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 448] ioctl(4, LOOP_SET_FD, 3 [pid 444] <... futex resumed>) = ? [pid 441] <... exit_group resumed>) = ? [pid 450] memfd_create("syzkaller", 0 [pid 448] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 444] +++ exited with 0 +++ [pid 441] +++ exited with 0 +++ [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=441, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 445] <... futex resumed>) = 1 [pid 443] <... futex resumed>) = 0 [pid 443] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 443] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 445] chdir("./file0" [pid 450] <... memfd_create resumed>) = 3 [pid 448] ioctl(4, LOOP_CLR_FD [pid 445] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 445] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 443] <... futex resumed>) = 0 [pid 443] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 450] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 448] <... ioctl resumed>) = 0 [pid 443] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 445] creat("./bus", 000) = 3 [pid 450] <... mmap resumed>) = 0x7fe6f03b1000 [pid 445] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 443] <... futex resumed>) = 0 [pid 445] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 443] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 445] <... openat resumed>) = 4 [pid 443] <... futex resumed>) = 0 [pid 445] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 443] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 445] <... futex resumed>) = 0 [pid 443] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 445] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 443] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 445] <... mount resumed>) = 0 [pid 443] <... futex resumed>) = 0 [pid 445] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 443] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 445] <... futex resumed>) = 0 [pid 443] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 445] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 443] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 445] <... open resumed>) = 5 [pid 443] <... futex resumed>) = 0 [pid 445] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 443] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 445] <... futex resumed>) = 0 [pid 443] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 445] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 443] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 450] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 445] <... mmap resumed>) = 0x20000000 [pid 443] <... futex resumed>) = 0 [pid 445] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 443] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 445] <... futex resumed>) = 0 [pid 443] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 445] memfd_create("syzkaller", 0 [pid 443] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 445] <... memfd_create resumed>) = 6 [pid 443] <... futex resumed>) = 0 [pid 445] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 443] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 445] <... mmap resumed>) = 0x7fe6f03b1000 [pid 450] <... write resumed>) = 262144 [pid 445] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 450] munmap(0x7fe6f03b1000, 138412032 [pid 448] ioctl(4, LOOP_SET_FD, 3 [pid 445] <... write resumed>) = 131072 [pid 445] munmap(0x7fe6f03b1000, 138412032 [pid 449] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 448] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 450] <... munmap resumed>) = 0 [pid 448] close(4 [pid 445] <... munmap resumed>) = 0 [pid 448] <... close resumed>) = 0 [pid 450] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 445] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 7 [pid 449] <... openat resumed>) = 3 [pid 448] close(3executing program [pid 450] <... openat resumed>) = 4 [pid 445] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 445] ioctl(7, LOOP_CLR_FD) = 0 [pid 449] write(3, "1000", 4) = 4 [pid 449] close(3) = 0 [pid 449] write(1, "executing program\n", 18) = 18 [pid 449] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 448] <... close resumed>) = 0 [pid 450] ioctl(4, LOOP_SET_FD, 3 [pid 449] <... futex resumed>) = 0 [pid 449] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 449] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 449] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 449] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 450] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 449] rt_sigprocmask(SIG_BLOCK, ~[], [pid 448] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] <... rt_sigprocmask resumed>[], 8) = 0 [pid 448] <... futex resumed>) = 1 [pid 446] <... futex resumed>) = 0 [pid 450] ioctl(4, LOOP_CLR_FD [pid 448] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 446] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 450] <... ioctl resumed>) = 0 [pid 448] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 446] <... futex resumed>) = 0 [pid 448] chdir("./file0" [pid 446] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 448] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 449] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 448] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... restart_syscall resumed>) = 0 [pid 448] <... futex resumed>) = 1 [pid 446] <... futex resumed>) = 0 [pid 445] ioctl(7, LOOP_SET_FD, 6 [pid 449] <... clone3 resumed> => {parent_tid=[451]}, 88) = 451 [pid 448] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 446] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 445] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 449] rt_sigprocmask(SIG_SETMASK, [], [pid 448] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 446] <... futex resumed>) = 0 [pid 445] close(7 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 449] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 448] creat("./bus", 000 [pid 446] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 445] <... close resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 450] ioctl(4, LOOP_SET_FD, 3 [pid 449] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 448] <... creat resumed>) = 3 [pid 445] close(6 [pid 302] ioctl(3, LOOP_CLR_FD [pid 450] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 449] <... futex resumed>) = 0 [pid 448] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 445] <... close resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 450] close(4 [pid 449] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 448] <... futex resumed>) = 1 [pid 446] <... futex resumed>) = 0 [pid 445] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] close(3 [pid 450] <... close resumed>) = 0 [pid 448] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 446] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 445] <... futex resumed>) = 1 [pid 443] <... futex resumed>) = 0 [pid 302] <... close resumed>) = 0 [pid 450] close(3 [pid 448] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 446] <... futex resumed>) = 0 [pid 445] mknod(0x20000000, 000 [pid 443] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 445] <... mknod resumed>) = -1 EEXIST (File exists) [pid 443] <... futex resumed>) = 0 [pid 450] <... close resumed>) = 0 [pid 448] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 446] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 445] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 443] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 452 [pid 450] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 448] <... openat resumed>) = 4 [pid 445] <... futex resumed>) = 0 [pid 443] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 450] <... futex resumed>) = 1 [pid 448] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 447] <... futex resumed>) = 0 [pid 445] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 443] exit_group(0 [pid 450] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 448] <... futex resumed>) = 1 [pid 447] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 446] <... futex resumed>) = 0 [pid 445] <... futex resumed>) = ? [pid 443] <... exit_group resumed>) = ? [pid 450] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 448] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 447] <... futex resumed>) = 0 [pid 446] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 445] +++ exited with 0 +++ [pid 443] +++ exited with 0 +++ [pid 450] chdir("./file0" [pid 448] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 447] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 446] <... futex resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=443, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 450] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 448] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 446] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 450] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 448] <... mount resumed>) = 0 [pid 450] <... futex resumed>) = 1 [pid 447] <... futex resumed>) = 0 [pid 450] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 448] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 447] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 450] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 448] <... futex resumed>) = 1 [pid 447] <... futex resumed>) = 0 [pid 446] <... futex resumed>) = 0 [pid 450] creat("./bus", 000 [pid 448] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 447] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 446] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 450] <... creat resumed>) = 3 [pid 448] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 450] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 448] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 446] <... futex resumed>) = 0 [pid 450] <... futex resumed>) = 1 [pid 447] <... futex resumed>) = 0 [pid 450] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 448] <... open resumed>) = 5 [pid 447] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 446] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 450] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 448] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 447] <... futex resumed>) = 0 [pid 446] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 450] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 448] <... futex resumed>) = 0 [pid 447] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 446] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 452 attached [pid 450] <... openat resumed>) = 4 [pid 448] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 446] <... futex resumed>) = 0 [pid 452] set_robust_list(0x5555636e06a0, 24 [pid 450] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 446] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 452] <... set_robust_list resumed>) = 0 [pid 452] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 448] <... mmap resumed>) = 0x20000000 [pid 450] <... futex resumed>) = 1 [pid 447] <... futex resumed>) = 0 [pid 448] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 450] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 447] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 450] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 448] <... futex resumed>) = 1 [pid 447] <... futex resumed>) = 0 [pid 446] <... futex resumed>) = 0 [pid 450] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 448] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 447] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 446] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 450] <... mount resumed>) = 0 [pid 448] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 446] <... futex resumed>) = 0 [pid 450] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 452] <... prctl resumed>) = 0 [pid 448] memfd_create("syzkaller", 0 [pid 450] <... futex resumed>) = 1 [pid 447] <... futex resumed>) = 0 [pid 446] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 450] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 448] <... memfd_create resumed>) = 6 [pid 447] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 452] setpgid(0, 0 [pid 450] <... open resumed>) = 5 [pid 448] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 447] <... futex resumed>) = 0 [pid 450] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 448] <... mmap resumed>) = 0x7fe6f03b1000 executing program [pid 450] <... futex resumed>) = 0 [pid 447] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 452] <... setpgid resumed>) = 0 [pid 452] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 452] write(3, "1000", 4) = 4 [pid 452] close(3) = 0 [pid 452] write(1, "executing program\n", 18) = 18 [pid 452] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 452] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 452] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 452] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 452] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 452] rt_sigprocmask(SIG_BLOCK, ~[], [pid 450] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 448] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 447] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ./strace-static-x86_64: Process 451 attached [pid 451] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 451] rt_sigprocmask(SIG_SETMASK, [], [pid 452] <... rt_sigprocmask resumed>[], 8) = 0 [pid 451] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 452] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 451] memfd_create("syzkaller", 0 [pid 448] <... write resumed>) = 131072 [pid 447] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 448] munmap(0x7fe6f03b1000, 138412032 [pid 450] <... futex resumed>) = 0 [pid 447] <... futex resumed>) = 1 [pid 450] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 448] <... munmap resumed>) = 0 [pid 447] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 452] <... clone3 resumed> => {parent_tid=[453]}, 88) = 453 [pid 451] <... memfd_create resumed>) = 3 [pid 450] <... mmap resumed>) = 0x20000000 [pid 448] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 450] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 452] rt_sigprocmask(SIG_SETMASK, [], [pid 451] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 448] <... openat resumed>) = 7 [pid 450] <... futex resumed>) = 1 [pid 448] ioctl(7, LOOP_SET_FD, 6 [pid 447] <... futex resumed>) = 0 [pid 450] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 448] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 447] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 450] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 448] ioctl(7, LOOP_CLR_FD [pid 447] <... futex resumed>) = 0 [pid 452] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 451] <... mmap resumed>) = 0x7fe6f03b1000 [pid 450] memfd_create("syzkaller", 0 [pid 448] <... ioctl resumed>) = 0 [pid 447] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 450] <... memfd_create resumed>) = 6 [pid 450] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 452] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 450] <... mmap resumed>) = 0x7fe6f03b1000 [pid 452] <... futex resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 452] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 451] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 305] <... openat resumed>) = 3 [pid 305] ioctl(3, LOOP_CLR_FD) = 0 [pid 305] close(3 [pid 450] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 448] ioctl(7, LOOP_SET_FD, 6 [pid 305] <... close resumed>) = 0 [pid 451] <... write resumed>) = 262144 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 450] <... write resumed>) = 131072 [pid 448] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 450] munmap(0x7fe6f03b1000, 138412032 [pid 448] close(7 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 454 [pid 450] <... munmap resumed>) = 0 [pid 451] munmap(0x7fe6f03b1000, 138412032 [pid 450] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 448] <... close resumed>) = 0 [pid 451] <... munmap resumed>) = 0 [pid 450] <... openat resumed>) = 7 [pid 448] close(6 [pid 450] ioctl(7, LOOP_SET_FD, 6 [pid 451] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 451] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 451] ioctl(4, LOOP_CLR_FD) = 0 [pid 450] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 448] <... close resumed>) = 0 [pid 450] ioctl(7, LOOP_CLR_FD [pid 448] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 450] <... ioctl resumed>) = 0 [pid 448] <... futex resumed>) = 1 [pid 446] <... futex resumed>) = 0 ./strace-static-x86_64: Process 453 attached [pid 448] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 446] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 448] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 446] <... futex resumed>) = 0 [pid 448] mknod(0x20000000, 000 [pid 446] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 448] <... mknod resumed>) = -1 EEXIST (File exists) [pid 453] set_robust_list(0x7fe6f87d19a0, 24 [pid 448] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 453] <... set_robust_list resumed>) = 0 [pid 448] <... futex resumed>) = 1 [pid 446] <... futex resumed>) = 0 [pid 448] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 453] rt_sigprocmask(SIG_SETMASK, [], [pid 446] exit_group(0 [pid 453] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 448] <... futex resumed>) = 0 [pid 446] <... exit_group resumed>) = ? [pid 453] memfd_create("syzkaller", 0 [pid 448] +++ exited with 0 +++ [pid 453] <... memfd_create resumed>) = 3 [pid 451] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 451] close(4) = 0 [pid 451] close(3 [pid 446] +++ exited with 0 +++ [pid 451] <... close resumed>) = 0 [pid 450] ioctl(7, LOOP_SET_FD, 6 [pid 451] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 450] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=446, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 450] close(7 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 450] <... close resumed>) = 0 [pid 451] <... futex resumed>) = 1 [pid 450] close(6 [pid 449] <... futex resumed>) = 0 [pid 451] chdir("./file0" [pid 449] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 451] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 449] <... futex resumed>) = 0 [pid 451] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 451] <... futex resumed>) = 0 [pid 449] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 451] creat("./bus", 000 [pid 450] <... close resumed>) = 0 [pid 449] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 451] <... creat resumed>) = 3 [pid 450] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] <... futex resumed>) = 0 [pid 451] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 450] <... futex resumed>) = 1 [pid 449] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 447] <... futex resumed>) = 0 [pid 451] <... futex resumed>) = 0 [pid 450] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 449] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 447] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 453] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 451] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 450] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 449] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 447] <... futex resumed>) = 0 [pid 453] <... mmap resumed>) = 0x7fe6f03b1000 [pid 451] <... openat resumed>) = 4 [pid 450] mknod(0x20000000, 000 [pid 449] <... futex resumed>) = 0 [pid 447] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 453] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 451] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 450] <... mknod resumed>) = -1 EEXIST (File exists) [pid 449] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 451] <... futex resumed>) = 0 [pid 450] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 451] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 450] <... futex resumed>) = 1 [pid 449] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 447] <... futex resumed>) = 0 [pid 451] <... mount resumed>) = 0 [pid 450] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 449] <... futex resumed>) = 0 [pid 451] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 447] exit_group(0 [pid 451] <... futex resumed>) = 0 [pid 450] <... futex resumed>) = ? [pid 449] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 447] <... exit_group resumed>) = ? [pid 451] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 450] +++ exited with 0 +++ [pid 449] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 451] <... open resumed>) = 5 [pid 449] <... futex resumed>) = 0 [pid 451] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 451] <... futex resumed>) = 0 [pid 449] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 451] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 449] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 451] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 449] <... futex resumed>) = 0 [pid 451] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 449] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 451] <... mmap resumed>) = 0x20000000 [pid 447] +++ exited with 0 +++ [pid 451] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=447, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 451] <... futex resumed>) = 1 [pid 449] <... futex resumed>) = 0 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 451] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 449] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 454 attached [pid 451] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 449] <... futex resumed>) = 0 [pid 451] memfd_create("syzkaller", 0 [pid 454] set_robust_list(0x5555636e06a0, 24 [pid 449] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 451] <... memfd_create resumed>) = 6 [pid 451] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 454] <... set_robust_list resumed>) = 0 [pid 451] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 304] <... restart_syscall resumed>) = 0 [pid 454] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 451] <... write resumed>) = 131072 [pid 454] <... prctl resumed>) = 0 [pid 453] <... write resumed>) = 262144 [pid 451] munmap(0x7fe6f03b1000, 138412032 [pid 454] setpgid(0, 0 [pid 453] munmap(0x7fe6f03b1000, 138412032 [pid 451] <... munmap resumed>) = 0 [pid 454] <... setpgid resumed>) = 0 [pid 453] <... munmap resumed>) = 0 [pid 451] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 453] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 451] <... openat resumed>) = 7 [pid 304] <... openat resumed>) = 3 [pid 453] <... openat resumed>) = 4 [pid 451] ioctl(7, LOOP_SET_FD, 6 [pid 304] ioctl(3, LOOP_CLR_FD [pid 454] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 304] <... ioctl resumed>) = 0 [pid 453] ioctl(4, LOOP_SET_FD, 3 [pid 451] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] close(3 [pid 453] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 451] ioctl(7, LOOP_CLR_FD [pid 304] <... close resumed>) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 453] ioctl(4, LOOP_CLR_FD [pid 451] <... ioctl resumed>) = 0 [pid 453] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 455 attached [pid 454] <... openat resumed>) = 3 [pid 454] write(3, "1000", 4 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 455 [pid 455] set_robust_list(0x5555636e06a0, 24 [pid 454] <... write resumed>) = 4 [pid 455] <... set_robust_list resumed>) = 0 [pid 454] close(3 [pid 455] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 454] <... close resumed>) = 0 [pid 455] <... prctl resumed>) = 0 [pid 454] write(1, "executing program\n", 18executing program [pid 455] setpgid(0, 0 [pid 454] <... write resumed>) = 18 [pid 455] <... setpgid resumed>) = 0 [pid 454] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 455] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 454] <... futex resumed>) = 0 [pid 455] <... openat resumed>) = 3 [pid 454] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 455] write(3, "1000", 4 [pid 454] <... rt_sigaction resumed>NULL, 8) = 0 [pid 455] <... write resumed>) = 4 [pid 454] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 455] close(3 [pid 454] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 455] <... close resumed>) = 0 [pid 454] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 455] write(1, "executing program\n", 18 executing program [pid 454] <... mmap resumed>) = 0x7fe6f87b1000 [pid 455] <... write resumed>) = 18 [pid 454] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 453] ioctl(4, LOOP_SET_FD, 3 [pid 451] ioctl(7, LOOP_SET_FD, 6 [pid 455] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 454] <... mprotect resumed>) = 0 [pid 453] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 451] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 455] <... futex resumed>) = 0 [pid 454] rt_sigprocmask(SIG_BLOCK, ~[], [pid 453] close(4 [pid 451] close(7 [pid 455] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 454] <... rt_sigprocmask resumed>[], 8) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 453] <... close resumed>) = 0 [pid 455] <... rt_sigaction resumed>NULL, 8) = 0 [pid 454] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 451] <... close resumed>) = 0 [pid 303] <... openat resumed>) = 3 [pid 455] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 453] close(3 [pid 451] close(6 [pid 303] ioctl(3, LOOP_CLR_FD [pid 455] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 454] <... clone3 resumed> => {parent_tid=[456]}, 88) = 456 [pid 455] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 454] rt_sigprocmask(SIG_SETMASK, [], [pid 455] <... mmap resumed>) = 0x7fe6f87b1000 [pid 454] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 451] <... close resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 455] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 454] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 451] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] close(3 [pid 455] <... mprotect resumed>) = 0 [pid 454] <... futex resumed>) = 0 [pid 451] <... futex resumed>) = 1 [pid 449] <... futex resumed>) = 0 [pid 455] rt_sigprocmask(SIG_BLOCK, ~[], [pid 454] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 453] <... close resumed>) = 0 [pid 451] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 449] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... close resumed>) = 0 [pid 455] <... rt_sigprocmask resumed>[], 8) = 0 [pid 453] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 451] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 449] <... futex resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 455] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 453] <... futex resumed>) = 1 [pid 452] <... futex resumed>) = 0 [pid 451] mknod(0x20000000, 000 [pid 449] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 453] chdir("./file0" [pid 452] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 455] <... clone3 resumed> => {parent_tid=[457]}, 88) = 457 [pid 453] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 452] <... futex resumed>) = 0 [pid 451] <... mknod resumed>) = -1 EEXIST (File exists) [pid 455] rt_sigprocmask(SIG_SETMASK, [], [pid 453] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 452] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 451] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 458 [pid 455] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 453] <... futex resumed>) = 0 [pid 452] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 451] <... futex resumed>) = 1 [pid 449] <... futex resumed>) = 0 [pid 455] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 453] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 452] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 451] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 449] exit_group(0 [pid 455] <... futex resumed>) = 0 [pid 455] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 453] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 452] <... futex resumed>) = 0 [pid 451] <... futex resumed>) = ? [pid 449] <... exit_group resumed>) = ? [pid 453] creat("./bus", 000 [pid 452] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 451] +++ exited with 0 +++ ./strace-static-x86_64: Process 458 attached [pid 458] set_robust_list(0x5555636e06a0, 24) = 0 [pid 458] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 449] +++ exited with 0 +++ [pid 453] <... creat resumed>) = 3 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=449, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 453] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 453] <... futex resumed>) = 1 [pid 452] <... futex resumed>) = 0 [pid 453] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 452] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 453] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 452] <... futex resumed>) = 0 [pid 453] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 452] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 453] <... openat resumed>) = 4 ./strace-static-x86_64: Process 456 attached [pid 453] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 456] set_robust_list(0x7fe6f87d19a0, 24 [pid 453] <... futex resumed>) = 1 [pid 452] <... futex resumed>) = 0 [pid 456] <... set_robust_list resumed>) = 0 [pid 453] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 452] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 456] rt_sigprocmask(SIG_SETMASK, [], [pid 453] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 452] <... futex resumed>) = 0 [pid 456] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 453] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 452] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 453] <... mount resumed>) = 0 [pid 456] memfd_create("syzkaller", 0 [pid 453] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 456] <... memfd_create resumed>) = 3 [pid 452] <... futex resumed>) = 0 [pid 453] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 452] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 458] <... prctl resumed>) = 0 [pid 456] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 453] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 452] <... futex resumed>) = 0 [pid 453] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 452] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 456] <... mmap resumed>) = 0x7fe6f03b1000 [pid 453] <... open resumed>) = 5 [pid 458] setpgid(0, 0 [pid 453] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 458] <... setpgid resumed>) = 0 [pid 453] <... futex resumed>) = 1 [pid 452] <... futex resumed>) = 0 [pid 453] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 452] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 453] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 452] <... futex resumed>) = 0 [pid 453] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 452] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 458] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 453] <... mmap resumed>) = 0x20000000 ./strace-static-x86_64: Process 457 attached [pid 458] <... openat resumed>) = 3 [pid 453] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 458] write(3, "1000", 4 [pid 457] set_robust_list(0x7fe6f87d19a0, 24 [pid 453] <... futex resumed>) = 1 [pid 452] <... futex resumed>) = 0 [pid 453] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 452] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... restart_syscall resumed>) = 0 [pid 453] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 452] <... futex resumed>) = 0 [pid 458] <... write resumed>) = 4 [pid 457] <... set_robust_list resumed>) = 0 [pid 453] memfd_create("syzkaller", 0 [pid 452] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 458] close(3 [pid 453] <... memfd_create resumed>) = 6 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 458] <... close resumed>) = 0 [pid 457] rt_sigprocmask(SIG_SETMASK, [], [pid 453] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 306] <... openat resumed>) = 3 [pid 453] <... mmap resumed>) = 0x7fe6f03b1000 [pid 306] ioctl(3, LOOP_CLR_FD [pid 458] write(1, "executing program\n", 18 [pid 457] <... rt_sigprocmask resumed>NULL, 8) = 0 executing program [pid 458] <... write resumed>) = 18 [pid 457] memfd_create("syzkaller", 0 [pid 458] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 457] <... memfd_create resumed>) = 3 [pid 458] <... futex resumed>) = 0 [pid 457] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 458] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 457] <... mmap resumed>) = 0x7fe6f03b1000 [pid 458] <... rt_sigaction resumed>NULL, 8) = 0 [pid 457] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 453] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 306] <... ioctl resumed>) = 0 [pid 458] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 458] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 453] <... write resumed>) = 131072 [pid 306] close(3 [pid 453] munmap(0x7fe6f03b1000, 138412032 [pid 306] <... close resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 458] <... mmap resumed>) = 0x7fe6f87b1000 [pid 458] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 458] rt_sigprocmask(SIG_BLOCK, ~[], [pid 453] <... munmap resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 459 [pid 458] <... rt_sigprocmask resumed>[], 8) = 0 [pid 457] <... write resumed>) = 262144 [pid 456] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 453] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 458] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 453] <... openat resumed>) = 7 [pid 453] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 453] ioctl(7, LOOP_CLR_FD [pid 458] <... clone3 resumed> => {parent_tid=[460]}, 88) = 460 [pid 453] <... ioctl resumed>) = 0 [pid 458] rt_sigprocmask(SIG_SETMASK, [], [pid 456] <... write resumed>) = 262144 ./strace-static-x86_64: Process 459 attached [pid 458] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 459] set_robust_list(0x5555636e06a0, 24 [pid 458] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 456] munmap(0x7fe6f03b1000, 138412032 [pid 458] <... futex resumed>) = 0 [pid 458] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 457] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 457] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 457] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 453] ioctl(7, LOOP_SET_FD, 6 [pid 459] <... set_robust_list resumed>) = 0 [pid 457] ioctl(4, LOOP_CLR_FD [pid 456] <... munmap resumed>) = 0 [pid 453] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 457] <... ioctl resumed>) = 0 [pid 456] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 453] close(7 [pid 459] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 453] <... close resumed>) = 0 [pid 459] <... prctl resumed>) = 0 [pid 456] <... openat resumed>) = 4 [pid 453] close(6./strace-static-x86_64: Process 460 attached [pid 460] set_robust_list(0x7fe6f87d19a0, 24 [pid 456] ioctl(4, LOOP_SET_FD, 3 [pid 453] <... close resumed>) = 0 [pid 459] setpgid(0, 0 [pid 456] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 453] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 459] <... setpgid resumed>) = 0 [pid 456] ioctl(4, LOOP_CLR_FD [pid 453] <... futex resumed>) = 1 [pid 452] <... futex resumed>) = 0 [pid 456] <... ioctl resumed>) = 0 [pid 453] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 452] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 453] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 452] <... futex resumed>) = 0 [pid 453] mknod(0x20000000, 000 [pid 452] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 459] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 453] <... mknod resumed>) = -1 EEXIST (File exists) [pid 459] <... openat resumed>) = 3 [pid 453] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 459] write(3, "1000", 4 [pid 453] <... futex resumed>) = 1 [pid 452] <... futex resumed>) = 0 [pid 459] <... write resumed>) = 4 [pid 457] ioctl(4, LOOP_SET_FD, 3 [pid 453] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 452] exit_group(0 [pid 459] close(3 [pid 453] <... futex resumed>) = ? [pid 452] <... exit_group resumed>) = ? [pid 457] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 453] +++ exited with 0 +++ [pid 457] close(4) = 0 [pid 457] close(3executing program [pid 459] <... close resumed>) = 0 [pid 457] <... close resumed>) = 0 [pid 452] +++ exited with 0 +++ [pid 456] ioctl(4, LOOP_SET_FD, 3 [pid 459] write(1, "executing program\n", 18 [pid 456] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=452, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 456] close(4 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 459] <... write resumed>) = 18 [pid 456] <... close resumed>) = 0 [pid 459] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 457] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 456] close(3 [pid 459] <... futex resumed>) = 0 [pid 457] <... futex resumed>) = 1 [pid 455] <... futex resumed>) = 0 [pid 457] chdir("./file0" [pid 455] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 457] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 455] <... futex resumed>) = 0 [pid 457] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 455] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 459] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 457] <... futex resumed>) = 0 [pid 456] <... close resumed>) = 0 [pid 455] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 459] <... rt_sigaction resumed>NULL, 8) = 0 [pid 457] creat("./bus", 000 [pid 456] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 455] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 459] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 457] <... creat resumed>) = 3 [pid 456] <... futex resumed>) = 1 [pid 455] <... futex resumed>) = 0 [pid 454] <... futex resumed>) = 0 [pid 460] <... set_robust_list resumed>) = 0 [pid 459] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 457] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 456] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 455] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 454] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 460] rt_sigprocmask(SIG_SETMASK, [], [pid 459] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 457] <... futex resumed>) = 0 [pid 456] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 455] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 454] <... futex resumed>) = 0 [pid 460] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 459] <... mmap resumed>) = 0x7fe6f87b1000 [pid 457] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 456] chdir("./file0" [pid 455] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 460] memfd_create("syzkaller", 0 [pid 459] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 457] <... openat resumed>) = 4 [pid 456] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 455] <... futex resumed>) = 0 [pid 454] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] <... restart_syscall resumed>) = 0 [pid 460] <... memfd_create resumed>) = 3 [pid 459] <... mprotect resumed>) = 0 [pid 457] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 456] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 455] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 454] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 460] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 459] rt_sigprocmask(SIG_BLOCK, ~[], [pid 457] <... futex resumed>) = 0 [pid 456] <... futex resumed>) = 0 [pid 455] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 460] <... mmap resumed>) = 0x7fe6f03b1000 [pid 459] <... rt_sigprocmask resumed>[], 8) = 0 [pid 457] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 456] creat("./bus", 000 [pid 455] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 454] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 460] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 459] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 457] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 456] <... creat resumed>) = 3 [pid 455] <... futex resumed>) = 0 [pid 454] <... futex resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 457] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 456] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 455] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 454] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 460] <... write resumed>) = 262144 [pid 459] <... clone3 resumed> => {parent_tid=[461]}, 88) = 461 [pid 457] <... mount resumed>) = 0 [pid 456] <... futex resumed>) = 0 [pid 454] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 302] <... openat resumed>) = 3 [pid 459] rt_sigprocmask(SIG_SETMASK, [], [pid 457] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 456] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 454] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] ioctl(3, LOOP_CLR_FD [pid 459] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 457] <... futex resumed>) = 1 [pid 456] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 455] <... futex resumed>) = 0 [pid 454] <... futex resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 459] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 457] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 456] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 455] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 460] munmap(0x7fe6f03b1000, 138412032 [pid 459] <... futex resumed>) = 0 [pid 457] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 455] <... futex resumed>) = 0 [pid 454] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] close(3 [pid 460] <... munmap resumed>) = 0 [pid 459] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 457] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 456] <... openat resumed>) = 4 [pid 455] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 460] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 457] <... open resumed>) = 5 [pid 456] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... close resumed>) = 0 [pid 460] <... openat resumed>) = 4 [pid 457] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 456] <... futex resumed>) = 1 [pid 454] <... futex resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 460] ioctl(4, LOOP_SET_FD, 3 [pid 457] <... futex resumed>) = 1 [pid 456] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 455] <... futex resumed>) = 0 [pid 454] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 460] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 457] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 455] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 460] ioctl(4, LOOP_CLR_FD [pid 457] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 456] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 455] <... futex resumed>) = 0 [pid 454] <... futex resumed>) = 0 [pid 460] <... ioctl resumed>) = 0 [pid 457] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 456] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 455] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 457] <... mmap resumed>) = 0x20000000 [pid 456] <... mount resumed>) = 0 [pid 454] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 462 ./strace-static-x86_64: Process 461 attached [pid 457] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 456] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 454] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 461] set_robust_list(0x7fe6f87d19a0, 24 [pid 457] <... futex resumed>) = 1 [pid 456] <... futex resumed>) = 0 [pid 455] <... futex resumed>) = 0 [pid 454] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 461] <... set_robust_list resumed>) = 0 [pid 457] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 456] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 455] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 454] <... futex resumed>) = 0 [pid 457] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 456] <... open resumed>) = 5 [pid 455] <... futex resumed>) = 0 [pid 461] rt_sigprocmask(SIG_SETMASK, [], [pid 457] memfd_create("syzkaller", 0 [pid 456] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 455] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 454] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 461] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 460] ioctl(4, LOOP_SET_FD, 3 [pid 457] <... memfd_create resumed>) = 6 [pid 456] <... futex resumed>) = 0 [pid 454] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 460] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 457] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 456] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 454] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 461] memfd_create("syzkaller", 0 [pid 460] close(4 [pid 457] <... mmap resumed>) = 0x7fe6f03b1000 [pid 456] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 454] <... futex resumed>) = 0 [pid 460] <... close resumed>) = 0 [pid 457] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 456] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 454] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 461] <... memfd_create resumed>) = 3 [pid 460] close(3 [pid 457] <... write resumed>) = 131072 [pid 461] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 460] <... close resumed>) = 0 [pid 457] munmap(0x7fe6f03b1000, 138412032 [pid 456] <... mmap resumed>) = 0x20000000 [pid 461] <... mmap resumed>) = 0x7fe6f03b1000 [pid 460] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 457] <... munmap resumed>) = 0 [pid 456] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 462 attached [pid 460] <... futex resumed>) = 1 [pid 458] <... futex resumed>) = 0 [pid 457] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 462] set_robust_list(0x5555636e06a0, 24 [pid 460] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 458] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 457] <... openat resumed>) = 7 [pid 456] <... futex resumed>) = 1 [pid 454] <... futex resumed>) = 0 [pid 462] <... set_robust_list resumed>) = 0 [pid 460] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 458] <... futex resumed>) = 0 [pid 457] ioctl(7, LOOP_SET_FD, 6 [pid 456] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 454] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 462] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 461] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 460] chdir("./file0" [pid 458] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 457] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 456] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 454] <... futex resumed>) = 0 [pid 462] <... prctl resumed>) = 0 [pid 460] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 457] ioctl(7, LOOP_CLR_FD [pid 462] setpgid(0, 0 [pid 460] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 457] <... ioctl resumed>) = 0 [pid 456] memfd_create("syzkaller", 0 [pid 454] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 462] <... setpgid resumed>) = 0 [pid 461] <... write resumed>) = 262144 [pid 460] <... futex resumed>) = 1 [pid 458] <... futex resumed>) = 0 [pid 456] <... memfd_create resumed>) = 6 [pid 462] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 461] munmap(0x7fe6f03b1000, 138412032 [pid 460] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 458] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 462] <... openat resumed>) = 3 [pid 461] <... munmap resumed>) = 0 [pid 460] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 458] <... futex resumed>) = 0 [pid 456] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 462] write(3, "1000", 4 [pid 461] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 460] creat("./bus", 000 [pid 458] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 462] <... write resumed>) = 4 [pid 461] <... openat resumed>) = 4 [pid 460] <... creat resumed>) = 3 [pid 456] <... mmap resumed>) = 0x7fe6f03b1000 [pid 462] close(3 [pid 461] ioctl(4, LOOP_SET_FD, 3 [pid 460] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 457] ioctl(7, LOOP_SET_FD, 6 [pid 462] <... close resumed>) = 0 [pid 460] <... futex resumed>) = 1 [pid 458] <... futex resumed>) = 0 [pid 457] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) executing program [pid 462] write(1, "executing program\n", 18 [pid 460] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 458] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 457] close(7 [pid 462] <... write resumed>) = 18 [pid 460] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 458] <... futex resumed>) = 0 [pid 457] <... close resumed>) = 0 [pid 462] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 460] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 458] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 457] close(6 [pid 462] <... futex resumed>) = 0 [pid 461] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 460] <... openat resumed>) = 4 [pid 457] <... close resumed>) = 0 [pid 456] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 462] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 461] ioctl(4, LOOP_CLR_FD [pid 460] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 457] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 462] <... rt_sigaction resumed>NULL, 8) = 0 [pid 460] <... futex resumed>) = 1 [pid 458] <... futex resumed>) = 0 [pid 457] <... futex resumed>) = 1 [pid 455] <... futex resumed>) = 0 [pid 462] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 461] <... ioctl resumed>) = 0 [pid 460] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 458] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 457] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 456] <... write resumed>) = 131072 [pid 455] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 462] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 460] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 458] <... futex resumed>) = 0 [pid 457] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 456] munmap(0x7fe6f03b1000, 138412032 [pid 455] <... futex resumed>) = 0 [pid 462] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 460] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 458] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 457] mknod(0x20000000, 000 [pid 455] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 462] <... mmap resumed>) = 0x7fe6f87b1000 [pid 460] <... mount resumed>) = 0 [pid 457] <... mknod resumed>) = -1 EEXIST (File exists) [pid 456] <... munmap resumed>) = 0 [pid 462] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 460] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 457] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 456] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 462] <... mprotect resumed>) = 0 [pid 460] <... futex resumed>) = 1 [pid 458] <... futex resumed>) = 0 [pid 457] <... futex resumed>) = 1 [pid 455] <... futex resumed>) = 0 [pid 462] rt_sigprocmask(SIG_BLOCK, ~[], [pid 461] ioctl(4, LOOP_SET_FD, 3 [pid 460] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 458] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 457] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 456] <... openat resumed>) = 7 [pid 455] exit_group(0 [pid 462] <... rt_sigprocmask resumed>[], 8) = 0 [pid 461] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 460] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 458] <... futex resumed>) = 0 [pid 457] <... futex resumed>) = ? [pid 456] ioctl(7, LOOP_SET_FD, 6 [pid 455] <... exit_group resumed>) = ? [pid 462] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 461] close(4 [pid 460] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 458] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 457] +++ exited with 0 +++ [pid 456] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 455] +++ exited with 0 +++ [pid 460] <... open resumed>) = 5 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=455, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 462] <... clone3 resumed> => {parent_tid=[463]}, 88) = 463 [pid 460] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 462] rt_sigprocmask(SIG_SETMASK, [], [pid 460] <... futex resumed>) = 1 [pid 458] <... futex resumed>) = 0 [pid 462] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 460] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 458] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 462] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 460] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 458] <... futex resumed>) = 0 [pid 304] <... openat resumed>) = 3 [pid 462] <... futex resumed>) = 0 [pid 460] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 458] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] ioctl(3, LOOP_CLR_FD [pid 462] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 461] <... close resumed>) = 0 [pid 460] <... mmap resumed>) = 0x20000000 [pid 456] ioctl(7, LOOP_CLR_FD [pid 304] <... ioctl resumed>) = 0 [pid 461] close(3 [pid 460] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 456] <... ioctl resumed>) = 0 [pid 304] close(3 [pid 460] <... futex resumed>) = 1 [pid 458] <... futex resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 460] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 458] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 460] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 458] <... futex resumed>) = 0 [pid 460] memfd_create("syzkaller", 0 [pid 458] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 464 [pid 461] <... close resumed>) = 0 [pid 460] <... memfd_create resumed>) = 6 [pid 461] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 460] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 461] <... futex resumed>) = 1 [pid 460] <... mmap resumed>) = 0x7fe6f03b1000 [pid 459] <... futex resumed>) = 0 [pid 461] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 460] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 459] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 461] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 460] <... write resumed>) = 131072 [pid 459] <... futex resumed>) = 0 [pid 456] ioctl(7, LOOP_SET_FD, 6 [pid 461] chdir("./file0" [pid 460] munmap(0x7fe6f03b1000, 138412032 [pid 459] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 456] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 461] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 460] <... munmap resumed>) = 0 [pid 456] close(7 [pid 461] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 460] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 461] <... futex resumed>) = 1 [pid 460] <... openat resumed>) = 7 [pid 459] <... futex resumed>) = 0 [pid 456] <... close resumed>) = 0 [pid 461] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 460] ioctl(7, LOOP_SET_FD, 6 [pid 459] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 456] close(6 [pid 461] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 460] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 459] <... futex resumed>) = 0 [pid 460] ioctl(7, LOOP_CLR_FD) = 0 [pid 456] <... close resumed>) = 0 [pid 461] creat("./bus", 000 [pid 459] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 456] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 461] <... creat resumed>) = 3 [pid 456] <... futex resumed>) = 1 [pid 461] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 456] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 454] <... futex resumed>) = 0 [pid 461] <... futex resumed>) = 1 [pid 459] <... futex resumed>) = 0 [pid 454] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 461] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 459] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 454] <... futex resumed>) = 1 [pid 456] <... futex resumed>) = 0 [pid 461] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 459] <... futex resumed>) = 0 [pid 456] mknod(0x20000000, 000 [pid 454] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 461] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 459] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 456] <... mknod resumed>) = -1 EEXIST (File exists) ./strace-static-x86_64: Process 463 attached [pid 461] <... openat resumed>) = 4 [pid 456] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 461] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 463] set_robust_list(0x7fe6f87d19a0, 24 [pid 461] <... futex resumed>) = 1 [pid 459] <... futex resumed>) = 0 [pid 456] <... futex resumed>) = 1 [pid 454] <... futex resumed>) = 0 [pid 463] <... set_robust_list resumed>) = 0 [pid 461] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 460] ioctl(7, LOOP_SET_FD, 6 [pid 459] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 456] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 463] rt_sigprocmask(SIG_SETMASK, [], [pid 461] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 460] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 459] <... futex resumed>) = 0 [pid 454] exit_group(0./strace-static-x86_64: Process 464 attached [pid 463] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 461] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 460] close(7 [pid 459] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 456] <... futex resumed>) = ? [pid 454] <... exit_group resumed>) = ? [pid 464] set_robust_list(0x5555636e06a0, 24 [pid 463] memfd_create("syzkaller", 0 [pid 461] <... mount resumed>) = 0 [pid 460] <... close resumed>) = 0 [pid 464] <... set_robust_list resumed>) = 0 [pid 463] <... memfd_create resumed>) = 3 [pid 460] close(6 [pid 456] +++ exited with 0 +++ [pid 464] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 463] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 461] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 460] <... close resumed>) = 0 [pid 454] +++ exited with 0 +++ [pid 464] <... prctl resumed>) = 0 [pid 463] <... mmap resumed>) = 0x7fe6f03b1000 [pid 461] <... futex resumed>) = 1 [pid 460] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 459] <... futex resumed>) = 0 [pid 464] setpgid(0, 0 [pid 461] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 460] <... futex resumed>) = 1 [pid 459] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 458] <... futex resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=454, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 464] <... setpgid resumed>) = 0 [pid 461] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 460] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 459] <... futex resumed>) = 0 [pid 458] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 464] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 461] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 460] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 459] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 458] <... futex resumed>) = 0 [pid 464] <... openat resumed>) = 3 [pid 463] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 461] <... open resumed>) = 5 [pid 460] mknod(0x20000000, 000 [pid 458] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... restart_syscall resumed>) = 0 [pid 464] write(3, "1000", 4 [pid 463] <... write resumed>) = 262144 [pid 461] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 460] <... mknod resumed>) = -1 EEXIST (File exists) [pid 464] <... write resumed>) = 4 [pid 461] <... futex resumed>) = 1 [pid 460] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 459] <... futex resumed>) = 0 [pid 464] close(3 [pid 461] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 460] <... futex resumed>) = 1 [pid 459] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 458] <... futex resumed>) = 0 [pid 464] <... close resumed>) = 0 [pid 461] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 460] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 459] <... futex resumed>) = 0 [pid 458] exit_group(0executing program [pid 464] write(1, "executing program\n", 18 [pid 463] munmap(0x7fe6f03b1000, 138412032 [pid 461] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 460] <... futex resumed>) = ? [pid 459] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 458] <... exit_group resumed>) = ? [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 464] <... write resumed>) = 18 [pid 463] <... munmap resumed>) = 0 [pid 461] <... mmap resumed>) = 0x20000000 [pid 460] +++ exited with 0 +++ [pid 458] +++ exited with 0 +++ [pid 461] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... openat resumed>) = 3 [pid 461] <... futex resumed>) = 1 [pid 459] <... futex resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=458, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 461] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 459] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... ioctl resumed>) = 0 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 461] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 459] <... futex resumed>) = 0 [pid 305] close(3 [pid 464] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 463] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 461] memfd_create("syzkaller", 0 [pid 459] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 305] <... close resumed>) = 0 [pid 464] <... futex resumed>) = 0 [pid 464] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 463] <... openat resumed>) = 4 [pid 461] <... memfd_create resumed>) = 6 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 464] <... rt_sigaction resumed>NULL, 8) = 0 [pid 464] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 463] ioctl(4, LOOP_SET_FD, 3 [pid 461] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 464] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 464] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 463] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 464] <... mmap resumed>) = 0x7fe6f87b1000 [pid 461] <... mmap resumed>) = 0x7fe6f03b1000 [pid 464] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 463] ioctl(4, LOOP_CLR_FD [pid 464] <... mprotect resumed>) = 0 [pid 464] rt_sigprocmask(SIG_BLOCK, ~[], [pid 463] <... ioctl resumed>) = 0 [pid 464] <... rt_sigprocmask resumed>[], 8) = 0 [pid 464] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[466]}, 88) = 466 [pid 464] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 464] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 461] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 465 [pid 464] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 466 attached [pid 466] set_robust_list(0x7fe6f87d19a0, 24 [pid 463] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 461] <... write resumed>) = 131072 [pid 461] munmap(0x7fe6f03b1000, 138412032 [pid 463] close(4 [pid 461] <... munmap resumed>) = 0 [pid 463] <... close resumed>) = 0 [pid 461] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 463] close(3) = 0 [pid 461] <... openat resumed>) = 7 [pid 463] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 461] ioctl(7, LOOP_SET_FD, 6 [pid 463] <... futex resumed>) = 1 [pid 462] <... futex resumed>) = 0 [pid 461] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 463] chdir("./file0" [pid 462] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 463] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 462] <... futex resumed>) = 0 [pid 461] ioctl(7, LOOP_CLR_FD [pid 463] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 462] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 463] <... futex resumed>) = 0 [pid 462] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 461] <... ioctl resumed>) = 0 [pid 463] creat("./bus", 000 [pid 462] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 463] <... creat resumed>) = 3 [pid 462] <... futex resumed>) = 0 [pid 463] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 462] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 463] <... futex resumed>) = 0 [pid 462] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 463] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 462] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 463] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 462] <... futex resumed>) = 0 [pid 463] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 462] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 463] <... openat resumed>) = 4 [pid 463] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 462] <... futex resumed>) = 0 ./strace-static-x86_64: Process 465 attached [pid 463] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 462] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 461] ioctl(7, LOOP_SET_FD, 6 [pid 463] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 462] <... futex resumed>) = 0 [pid 465] set_robust_list(0x5555636e06a0, 24 [pid 463] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 462] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 461] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 465] <... set_robust_list resumed>) = 0 [pid 463] <... mount resumed>) = 0 [pid 461] close(7 [pid 463] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 461] <... close resumed>) = 0 [pid 465] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 463] <... futex resumed>) = 1 [pid 462] <... futex resumed>) = 0 [pid 461] close(6 [pid 463] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 462] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 463] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 462] <... futex resumed>) = 0 [pid 463] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 462] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 465] <... prctl resumed>) = 0 [pid 463] <... open resumed>) = 5 [pid 461] <... close resumed>) = 0 [pid 463] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 461] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... restart_syscall resumed>) = 0 [pid 465] setpgid(0, 0 [pid 463] <... futex resumed>) = 1 [pid 462] <... futex resumed>) = 0 [pid 461] <... futex resumed>) = 1 [pid 465] <... setpgid resumed>) = 0 [pid 463] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 462] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 461] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 459] <... futex resumed>) = 0 [pid 465] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 463] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 462] <... futex resumed>) = 0 [pid 459] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 465] <... openat resumed>) = 3 [pid 463] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 462] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 459] <... futex resumed>) = 1 [pid 461] <... futex resumed>) = 0 [pid 466] <... set_robust_list resumed>) = 0 [pid 465] write(3, "1000", 4 [pid 463] <... mmap resumed>) = 0x20000000 [pid 461] mknod(0x20000000, 000 [pid 459] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 466] rt_sigprocmask(SIG_SETMASK, [], [pid 465] <... write resumed>) = 4 [pid 463] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 461] <... mknod resumed>) = -1 EEXIST (File exists) [pid 466] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 465] close(3 [pid 463] <... futex resumed>) = 1 [pid 462] <... futex resumed>) = 0 [pid 461] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... openat resumed>) = 3 [pid 466] memfd_create("syzkaller", 0 [pid 465] <... close resumed>) = 0 [pid 463] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 462] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 461] <... futex resumed>) = 1 [pid 459] <... futex resumed>) = 0 [pid 303] ioctl(3, LOOP_CLR_FD [pid 466] <... memfd_create resumed>) = 3 [pid 465] write(1, "executing program\n", 18 [pid 463] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 462] <... futex resumed>) = 0 [pid 466] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 465] <... write resumed>) = 18 [pid 463] memfd_create("syzkaller", 0 [pid 462] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 461] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 459] exit_group(0 [pid 303] <... ioctl resumed>) = 0 [pid 466] <... mmap resumed>) = 0x7fe6f03b1000 [pid 465] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 463] <... memfd_create resumed>) = 6 [pid 466] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 465] <... futex resumed>) = 0 [pid 463] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 461] <... futex resumed>) = ? [pid 459] <... exit_group resumed>) = ? [pid 303] close(3 [pid 465] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 463] <... mmap resumed>) = 0x7fe6f03b1000 [pid 461] +++ exited with 0 +++ [pid 465] <... rt_sigaction resumed>NULL, 8) = 0 [pid 463] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 459] +++ exited with 0 +++ [pid 303] <... close resumed>) = 0 [pid 465] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 463] <... write resumed>) = 131072 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 466] <... write resumed>) = 262144 [pid 465] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 463] munmap(0x7fe6f03b1000, 138412032 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=459, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 465] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 463] <... munmap resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 465] <... mmap resumed>) = 0x7fe6f87b1000 [pid 463] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 465] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 463] <... openat resumed>) = 7 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 467 [pid 465] <... mprotect resumed>) = 0 [pid 463] ioctl(7, LOOP_SET_FD, 6 [pid 465] rt_sigprocmask(SIG_BLOCK, ~[], [pid 463] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 465] <... rt_sigprocmask resumed>[], 8) = 0 [pid 463] ioctl(7, LOOP_CLR_FD [pid 465] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 463] <... ioctl resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 466] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 465] <... clone3 resumed> => {parent_tid=[468]}, 88) = 468 [pid 466] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 465] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 465] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 466] <... openat resumed>) = 4 [pid 465] <... futex resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 465] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 306] ioctl(3, LOOP_CLR_FD [pid 466] ioctl(4, LOOP_SET_FD, 3 [pid 306] <... ioctl resumed>) = 0 [pid 466] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 463] ioctl(7, LOOP_SET_FD, 6 [pid 306] close(3 [pid 466] ioctl(4, LOOP_CLR_FD [pid 463] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 466] <... ioctl resumed>) = 0 [pid 463] close(7 [pid 306] <... close resumed>) = 0 [pid 463] <... close resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 463] close(6) = 0 [pid 463] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 462] <... futex resumed>) = 0 [pid 463] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 462] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 463] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 462] <... futex resumed>) = 0 [pid 463] mknod(0x20000000, 000 [pid 462] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 463] <... mknod resumed>) = -1 EEXIST (File exists) [pid 466] ioctl(4, LOOP_SET_FD, 3 [pid 463] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 466] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 463] <... futex resumed>) = 1 [pid 462] <... futex resumed>) = 0 [pid 466] close(4 [pid 463] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 462] exit_group(0 [pid 466] <... close resumed>) = 0 [pid 463] <... futex resumed>) = ? [pid 462] <... exit_group resumed>) = ? [pid 466] close(3 [pid 463] +++ exited with 0 +++ [pid 462] +++ exited with 0 +++ [pid 466] <... close resumed>) = 0 [pid 466] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 464] <... futex resumed>) = 0 [pid 466] chdir("./file0" [pid 464] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 466] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 464] <... futex resumed>) = 0 [pid 466] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 464] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 466] <... futex resumed>) = 0 [pid 464] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 466] creat("./bus", 000 [pid 464] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=462, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 466] <... creat resumed>) = 3 [pid 464] <... futex resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 469 [pid 466] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 464] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 466] <... futex resumed>) = 0 [pid 464] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 466] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 464] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 466] <... openat resumed>) = 4 [pid 464] <... futex resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 466] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 464] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 467 attached [pid 466] <... futex resumed>) = 0 [pid 464] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 302] <... openat resumed>) = 3 [pid 466] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 464] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 467] set_robust_list(0x5555636e06a0, 24 [pid 466] <... mount resumed>) = 0 [pid 464] <... futex resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 466] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 464] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 468 attached [pid 467] <... set_robust_list resumed>) = 0 [pid 466] <... futex resumed>) = 0 [pid 464] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 302] <... ioctl resumed>) = 0 [pid 466] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 464] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] close(3 [pid 468] set_robust_list(0x7fe6f87d19a0, 24 [pid 467] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 466] <... open resumed>) = 5 [pid 464] <... futex resumed>) = 0 [pid 466] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 464] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] <... close resumed>) = 0 [pid 468] <... set_robust_list resumed>) = 0 [pid 467] <... prctl resumed>) = 0 [pid 466] <... futex resumed>) = 0 [pid 464] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 468] rt_sigprocmask(SIG_SETMASK, [], [pid 467] setpgid(0, 0 [pid 466] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 464] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 468] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 467] <... setpgid resumed>) = 0 [pid 466] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 464] <... futex resumed>) = 0 [pid 466] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 464] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 469 attached [pid 468] memfd_create("syzkaller", 0 [pid 467] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 466] <... mmap resumed>) = 0x20000000 [pid 469] set_robust_list(0x5555636e06a0, 24 [pid 466] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 469] <... set_robust_list resumed>) = 0 [pid 468] <... memfd_create resumed>) = 3 [pid 467] <... openat resumed>) = 3 [pid 466] <... futex resumed>) = 1 [pid 464] <... futex resumed>) = 0 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 470 [pid 469] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 468] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 467] write(3, "1000", 4 [pid 466] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 464] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 469] <... prctl resumed>) = 0 [pid 468] <... mmap resumed>) = 0x7fe6f03b1000 [pid 467] <... write resumed>) = 4 [pid 466] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 464] <... futex resumed>) = 0 [pid 469] setpgid(0, 0 [pid 466] memfd_create("syzkaller", 0 [pid 464] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 469] <... setpgid resumed>) = 0 [pid 466] <... memfd_create resumed>) = 6 [pid 469] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 466] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 469] <... openat resumed>) = 3 [pid 466] <... mmap resumed>) = 0x7fe6f03b1000 [pid 469] write(3, "1000", 4 [pid 468] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 467] close(3 [pid 466] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072executing program [pid 469] <... write resumed>) = 4 [pid 467] <... close resumed>) = 0 [pid 466] <... write resumed>) = 131072 [pid 467] write(1, "executing program\n", 18 [pid 469] close(3 [pid 467] <... write resumed>) = 18 [pid 466] munmap(0x7fe6f03b1000, 138412032 [pid 469] <... close resumed>) = 0 [pid 468] <... write resumed>) = 262144 [pid 467] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 466] <... munmap resumed>) = 0 [pid 468] munmap(0x7fe6f03b1000, 138412032 [pid 467] <... futex resumed>) = 0 executing program [pid 469] write(1, "executing program\n", 18 [pid 468] <... munmap resumed>) = 0 [pid 467] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 466] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 467] <... rt_sigaction resumed>NULL, 8) = 0 [pid 468] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 467] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], ./strace-static-x86_64: Process 470 attached [pid 469] <... write resumed>) = 18 [pid 468] <... openat resumed>) = 4 [pid 467] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 466] <... openat resumed>) = 7 [pid 470] set_robust_list(0x5555636e06a0, 24 [pid 469] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 468] ioctl(4, LOOP_SET_FD, 3 [pid 467] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 466] ioctl(7, LOOP_SET_FD, 6 [pid 470] <... set_robust_list resumed>) = 0 [pid 469] <... futex resumed>) = 0 [pid 468] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 467] <... mmap resumed>) = 0x7fe6f87b1000 [pid 466] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 470] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 469] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 468] ioctl(4, LOOP_CLR_FD [pid 467] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 466] ioctl(7, LOOP_CLR_FD [pid 470] <... prctl resumed>) = 0 [pid 469] <... rt_sigaction resumed>NULL, 8) = 0 [pid 468] <... ioctl resumed>) = 0 [pid 467] <... mprotect resumed>) = 0 [pid 466] <... ioctl resumed>) = 0 [pid 470] setpgid(0, 0 [pid 469] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 467] rt_sigprocmask(SIG_BLOCK, ~[], [pid 470] <... setpgid resumed>) = 0 [pid 469] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 467] <... rt_sigprocmask resumed>[], 8) = 0 [pid 470] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 469] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 467] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 470] <... openat resumed>) = 3 [pid 469] <... mmap resumed>) = 0x7fe6f87b1000 [pid 470] write(3, "1000", 4 [pid 469] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 470] <... write resumed>) = 4 [pid 469] <... mprotect resumed>) = 0 [pid 467] <... clone3 resumed> => {parent_tid=[471]}, 88) = 471 [pid 470] close(3 [pid 469] rt_sigprocmask(SIG_BLOCK, ~[], [pid 468] ioctl(4, LOOP_SET_FD, 3 [pid 467] rt_sigprocmask(SIG_SETMASK, [], [pid 466] ioctl(7, LOOP_SET_FD, 6 [pid 470] <... close resumed>) = 0 [pid 469] <... rt_sigprocmask resumed>[], 8) = 0 [pid 468] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 467] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 466] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) executing program [pid 470] write(1, "executing program\n", 18 [pid 469] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 468] close(4 [pid 467] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 466] close(7 [pid 470] <... write resumed>) = 18 [pid 468] <... close resumed>) = 0 [pid 467] <... futex resumed>) = 0 [pid 466] <... close resumed>) = 0 [pid 470] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 469] <... clone3 resumed> => {parent_tid=[472]}, 88) = 472 [pid 468] close(3 [pid 467] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 466] close(6 [pid 470] <... futex resumed>) = 0 [pid 469] rt_sigprocmask(SIG_SETMASK, [], [pid 466] <... close resumed>) = 0 [pid 470] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 469] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 468] <... close resumed>) = 0 [pid 466] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 470] <... rt_sigaction resumed>NULL, 8) = 0 [pid 469] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 468] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 466] <... futex resumed>) = 1 [pid 464] <... futex resumed>) = 0 [pid 470] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 469] <... futex resumed>) = 0 [pid 468] <... futex resumed>) = 1 [pid 466] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 465] <... futex resumed>) = 0 [pid 464] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 470] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 469] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 468] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 466] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 464] <... futex resumed>) = 0 [pid 465] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 470] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 468] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 466] mknod(0x20000000, 000 [pid 465] <... futex resumed>) = 0 [pid 464] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 470] <... mmap resumed>) = 0x7fe6f87b1000 [pid 468] chdir("./file0" [pid 466] <... mknod resumed>) = -1 EEXIST (File exists) [pid 465] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 470] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 466] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 470] <... mprotect resumed>) = 0 [pid 466] <... futex resumed>) = 1 [pid 464] <... futex resumed>) = 0 [pid 470] rt_sigprocmask(SIG_BLOCK, ~[], [pid 468] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 466] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 464] exit_group(0 [pid 470] <... rt_sigprocmask resumed>[], 8) = 0 [pid 468] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 466] <... futex resumed>) = ? [pid 464] <... exit_group resumed>) = ? [pid 470] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 468] <... futex resumed>) = 1 [pid 466] +++ exited with 0 +++ [pid 465] <... futex resumed>) = 0 [pid 464] +++ exited with 0 +++ ./strace-static-x86_64: Process 471 attached [pid 468] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 465] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=464, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 471] set_robust_list(0x7fe6f87d19a0, 24 [pid 470] <... clone3 resumed> => {parent_tid=[473]}, 88) = 473 [pid 468] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 465] <... futex resumed>) = 0 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 471] <... set_robust_list resumed>) = 0 [pid 470] rt_sigprocmask(SIG_SETMASK, [], [pid 468] creat("./bus", 000 [pid 465] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 472 attached [pid 470] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 472] set_robust_list(0x7fe6f87d19a0, 24 [pid 471] rt_sigprocmask(SIG_SETMASK, [], [pid 470] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 468] <... creat resumed>) = 3 [pid 472] <... set_robust_list resumed>) = 0 [pid 470] <... futex resumed>) = 0 [pid 468] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 472] rt_sigprocmask(SIG_SETMASK, [], [pid 471] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 470] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 468] <... futex resumed>) = 1 [pid 472] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 465] <... futex resumed>) = 0 [pid 468] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 465] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 468] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 465] <... futex resumed>) = 0 [pid 468] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 465] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 472] memfd_create("syzkaller", 0 [pid 471] memfd_create("syzkaller", 0 [pid 468] <... openat resumed>) = 4 [pid 472] <... memfd_create resumed>) = 3 [pid 471] <... memfd_create resumed>) = 3 [pid 468] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 471] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 468] <... futex resumed>) = 1 [pid 465] <... futex resumed>) = 0 [pid 468] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 471] <... mmap resumed>) = 0x7fe6f03b1000 [pid 468] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 465] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 468] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 465] <... futex resumed>) = 0 [pid 472] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 468] <... mount resumed>) = 0 [pid 465] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 468] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 465] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 472] <... mmap resumed>) = 0x7fe6f03b1000 [pid 468] <... futex resumed>) = 0 [pid 465] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 468] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 465] <... futex resumed>) = 0 [pid 472] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 471] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 468] <... open resumed>) = 5 [pid 465] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 468] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 465] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 468] <... futex resumed>) = 0 [pid 465] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 468] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 465] <... futex resumed>) = 0 [pid 472] <... write resumed>) = 262144 [pid 468] <... mmap resumed>) = 0x20000000 [pid 465] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 471] <... write resumed>) = 262144 [pid 468] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 465] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 471] munmap(0x7fe6f03b1000, 138412032 [pid 468] <... futex resumed>) = 0 [pid 465] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 468] memfd_create("syzkaller", 0 [pid 465] <... futex resumed>) = 0 [pid 471] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 473 attached [pid 471] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 468] <... memfd_create resumed>) = 6 [pid 465] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 468] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 473] set_robust_list(0x7fe6f87d19a0, 24 [pid 471] <... openat resumed>) = 4 [pid 468] <... mmap resumed>) = 0x7fe6f03b1000 [pid 473] <... set_robust_list resumed>) = 0 [pid 473] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 473] memfd_create("syzkaller", 0) = 3 [pid 472] munmap(0x7fe6f03b1000, 138412032 [pid 473] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 472] <... munmap resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 473] <... mmap resumed>) = 0x7fe6f03b1000 [pid 472] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 471] ioctl(4, LOOP_SET_FD, 3 [pid 468] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 473] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 472] <... openat resumed>) = 4 [pid 471] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 468] <... write resumed>) = 131072 [pid 472] ioctl(4, LOOP_SET_FD, 3 [pid 471] ioctl(4, LOOP_CLR_FD [pid 468] munmap(0x7fe6f03b1000, 138412032 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 472] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 471] <... ioctl resumed>) = 0 [pid 468] <... munmap resumed>) = 0 [pid 304] <... openat resumed>) = 3 [pid 472] ioctl(4, LOOP_CLR_FD [pid 468] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 304] ioctl(3, LOOP_CLR_FD [pid 472] <... ioctl resumed>) = 0 [pid 468] <... openat resumed>) = 7 [pid 304] <... ioctl resumed>) = 0 [pid 468] ioctl(7, LOOP_SET_FD, 6 [pid 304] close(3 [pid 468] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] <... close resumed>) = 0 [pid 468] ioctl(7, LOOP_CLR_FD [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 468] <... ioctl resumed>) = 0 [pid 471] ioctl(4, LOOP_SET_FD, 3 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 474 [pid 471] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 473] <... write resumed>) = 262144 [pid 471] close(4 [pid 472] ioctl(4, LOOP_SET_FD, 3 [pid 471] <... close resumed>) = 0 [pid 471] close(3 [pid 468] ioctl(7, LOOP_SET_FD, 6 [pid 472] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 472] close(4) = 0 [pid 472] close(3) = 0 [pid 471] <... close resumed>) = 0 [pid 468] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 471] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 468] close(7 [pid 471] <... futex resumed>) = 1 [pid 467] <... futex resumed>) = 0 [pid 471] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 468] <... close resumed>) = 0 [pid 467] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 471] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 468] close(6 [pid 467] <... futex resumed>) = 0 [pid 471] chdir("./file0" [pid 473] munmap(0x7fe6f03b1000, 138412032 [pid 472] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 473] <... munmap resumed>) = 0 [pid 472] <... futex resumed>) = 1 [pid 471] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 469] <... futex resumed>) = 0 [pid 468] <... close resumed>) = 0 [pid 467] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 473] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 472] chdir("./file0" [pid 471] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 469] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 468] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 467] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 473] <... openat resumed>) = 4 [pid 472] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 471] <... futex resumed>) = 0 [pid 469] <... futex resumed>) = 0 [pid 468] <... futex resumed>) = 1 [pid 467] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 465] <... futex resumed>) = 0 ./strace-static-x86_64: Process 474 attached [pid 473] ioctl(4, LOOP_SET_FD, 3 [pid 472] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 471] creat("./bus", 000 [pid 469] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 468] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 467] <... futex resumed>) = 0 [pid 465] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 474] set_robust_list(0x5555636e06a0, 24 [pid 473] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 472] <... futex resumed>) = 0 [pid 471] <... creat resumed>) = 3 [pid 469] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 468] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 467] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 465] <... futex resumed>) = 0 [pid 474] <... set_robust_list resumed>) = 0 [pid 473] ioctl(4, LOOP_CLR_FD [pid 472] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 471] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 469] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 468] mknod(0x20000000, 000 [pid 467] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 465] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 473] <... ioctl resumed>) = 0 [pid 472] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 471] <... futex resumed>) = 0 [pid 469] <... futex resumed>) = 0 [pid 474] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 472] creat("./bus", 000 [pid 471] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 469] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 468] <... mknod resumed>) = -1 EEXIST (File exists) [pid 467] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 474] <... prctl resumed>) = 0 [pid 472] <... creat resumed>) = 3 [pid 471] <... openat resumed>) = 4 [pid 468] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 467] <... futex resumed>) = 0 [pid 472] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 471] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 468] <... futex resumed>) = 1 [pid 467] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 465] <... futex resumed>) = 0 [pid 474] setpgid(0, 0 [pid 472] <... futex resumed>) = 1 [pid 471] <... futex resumed>) = 0 [pid 469] <... futex resumed>) = 0 [pid 468] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 467] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 465] exit_group(0 [pid 474] <... setpgid resumed>) = 0 [pid 472] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 471] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 469] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 474] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 473] ioctl(4, LOOP_SET_FD, 3 [pid 472] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 471] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 469] <... futex resumed>) = 0 [pid 468] <... futex resumed>) = ? [pid 467] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 465] <... exit_group resumed>) = ? [pid 474] <... openat resumed>) = 3 [pid 473] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 472] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 471] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 469] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 473] close(4 [pid 472] <... openat resumed>) = 4 [pid 468] +++ exited with 0 +++ [pid 467] <... futex resumed>) = 0 [pid 465] +++ exited with 0 +++ [pid 474] write(3, "1000", 4 [pid 473] <... close resumed>) = 0 [pid 472] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 471] <... mount resumed>) = 0 [pid 467] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 474] <... write resumed>) = 4 [pid 473] close(3 [pid 472] <... futex resumed>) = 1 [pid 471] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 469] <... futex resumed>) = 0 [pid 467] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=465, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 474] close(3 [pid 473] <... close resumed>) = 0 [pid 472] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 471] <... futex resumed>) = 0 [pid 469] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 467] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 474] <... close resumed>) = 0 [pid 473] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 472] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 471] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 469] <... futex resumed>) = 0 [pid 467] <... futex resumed>) = 0 executing program [pid 474] write(1, "executing program\n", 18 [pid 473] <... futex resumed>) = 1 [pid 472] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 471] <... open resumed>) = 5 [pid 470] <... futex resumed>) = 0 [pid 469] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 467] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 474] <... write resumed>) = 18 [pid 473] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 472] <... mount resumed>) = 0 [pid 471] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 470] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 467] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 474] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 473] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 472] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 471] <... futex resumed>) = 0 [pid 470] <... futex resumed>) = 0 [pid 467] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 474] <... futex resumed>) = 0 [pid 473] chdir("./file0" [pid 472] <... futex resumed>) = 1 [pid 471] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 470] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 469] <... futex resumed>) = 0 [pid 467] <... futex resumed>) = 0 [pid 474] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 473] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 472] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 469] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 474] <... rt_sigaction resumed>NULL, 8) = 0 [pid 473] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 472] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 471] <... mmap resumed>) = 0x20000000 [pid 469] <... futex resumed>) = 0 [pid 467] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 474] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 473] <... futex resumed>) = 1 [pid 472] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 471] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 470] <... futex resumed>) = 0 [pid 469] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 467] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 474] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 473] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 472] <... open resumed>) = 5 [pid 471] <... futex resumed>) = 0 [pid 470] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 467] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 474] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 473] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 472] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 470] <... futex resumed>) = 0 [pid 474] <... mmap resumed>) = 0x7fe6f87b1000 [pid 473] creat("./bus", 000 [pid 472] <... futex resumed>) = 1 [pid 471] memfd_create("syzkaller", 0 [pid 470] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 469] <... futex resumed>) = 0 [pid 467] <... futex resumed>) = 0 [pid 473] <... creat resumed>) = 3 [pid 472] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 469] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 473] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 472] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 469] <... futex resumed>) = 0 [pid 473] <... futex resumed>) = 1 [pid 472] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 470] <... futex resumed>) = 0 [pid 469] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 473] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 472] <... mmap resumed>) = 0x20000000 [pid 470] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 473] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 472] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 470] <... futex resumed>) = 0 [pid 473] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 472] <... futex resumed>) = 1 [pid 470] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 469] <... futex resumed>) = 0 [pid 473] <... openat resumed>) = 4 [pid 472] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 469] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 473] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 472] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 469] <... futex resumed>) = 0 [pid 473] <... futex resumed>) = 1 [pid 472] memfd_create("syzkaller", 0 [pid 470] <... futex resumed>) = 0 [pid 469] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 473] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 472] <... memfd_create resumed>) = 6 [pid 470] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 474] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 473] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 472] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 471] <... memfd_create resumed>) = 6 [pid 470] <... futex resumed>) = 0 [pid 467] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 305] <... restart_syscall resumed>) = 0 [pid 474] <... mprotect resumed>) = 0 [pid 473] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 472] <... mmap resumed>) = 0x7fe6f03b1000 [pid 471] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 470] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 474] rt_sigprocmask(SIG_BLOCK, ~[], [pid 473] <... mount resumed>) = 0 [pid 472] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 471] <... mmap resumed>) = 0x7fe6f03b1000 [pid 474] <... rt_sigprocmask resumed>[], 8) = 0 [pid 473] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 472] <... write resumed>) = 131072 [pid 473] <... futex resumed>) = 1 [pid 472] munmap(0x7fe6f03b1000, 138412032 [pid 470] <... futex resumed>) = 0 [pid 473] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 472] <... munmap resumed>) = 0 [pid 470] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 473] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 472] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 470] <... futex resumed>) = 0 [pid 473] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 472] <... openat resumed>) = 7 [pid 470] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 473] <... open resumed>) = 5 [pid 472] ioctl(7, LOOP_SET_FD, 6 [pid 474] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 473] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 472] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 471] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 473] <... futex resumed>) = 1 [pid 472] ioctl(7, LOOP_CLR_FD [pid 470] <... futex resumed>) = 0 [pid 473] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 472] <... ioctl resumed>) = 0 [pid 470] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 473] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 470] <... futex resumed>) = 0 [pid 474] <... clone3 resumed> => {parent_tid=[475]}, 88) = 475 [pid 473] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 471] <... write resumed>) = 131072 [pid 470] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 474] rt_sigprocmask(SIG_SETMASK, [], [pid 473] <... mmap resumed>) = 0x20000000 [pid 471] munmap(0x7fe6f03b1000, 138412032 [pid 305] <... openat resumed>) = 3 [pid 474] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 473] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 474] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 473] <... futex resumed>) = 1 [pid 471] <... munmap resumed>) = 0 [pid 470] <... futex resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 474] <... futex resumed>) = 0 [pid 473] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 472] ioctl(7, LOOP_SET_FD, 6 [pid 471] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 470] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... ioctl resumed>) = 0 [pid 474] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 473] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 472] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 471] <... openat resumed>) = 7 [pid 470] <... futex resumed>) = 0 [pid 305] close(3 [pid 473] memfd_create("syzkaller", 0 [pid 472] close(7 [pid 471] ioctl(7, LOOP_SET_FD, 6 [pid 470] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 473] <... memfd_create resumed>) = 6 [pid 472] <... close resumed>) = 0 [pid 471] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] <... close resumed>) = 0 [pid 473] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 472] close(6 [pid 471] ioctl(7, LOOP_CLR_FD [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 473] <... mmap resumed>) = 0x7fe6f03b1000 [pid 472] <... close resumed>) = 0 [pid 471] <... ioctl resumed>) = 0 [pid 473] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 472] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 473] <... write resumed>) = 131072 [pid 472] <... futex resumed>) = 1 [pid 469] <... futex resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 476 ./strace-static-x86_64: Process 475 attached [pid 473] munmap(0x7fe6f03b1000, 138412032 [pid 472] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 469] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 473] <... munmap resumed>) = 0 [pid 472] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 469] <... futex resumed>) = 0 [pid 473] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 472] mknod(0x20000000, 000 [pid 469] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 475] set_robust_list(0x7fe6f87d19a0, 24 [pid 473] <... openat resumed>) = 7 [pid 472] <... mknod resumed>) = -1 EEXIST (File exists) [pid 475] <... set_robust_list resumed>) = 0 [pid 473] ioctl(7, LOOP_SET_FD, 6 [pid 472] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 473] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 472] <... futex resumed>) = 1 [pid 471] ioctl(7, LOOP_SET_FD, 6 [pid 469] <... futex resumed>) = 0 [pid 475] rt_sigprocmask(SIG_SETMASK, [], [pid 473] ioctl(7, LOOP_CLR_FD [pid 472] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 471] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 469] exit_group(0 [pid 475] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 473] <... ioctl resumed>) = 0 [pid 472] <... futex resumed>) = ? [pid 471] close(7 [pid 469] <... exit_group resumed>) = ? [pid 475] memfd_create("syzkaller", 0 [pid 472] +++ exited with 0 +++ [pid 471] <... close resumed>) = 0 [pid 469] +++ exited with 0 +++ [pid 475] <... memfd_create resumed>) = 3 [pid 471] close(6 [pid 475] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 476 attached [pid 476] set_robust_list(0x5555636e06a0, 24 [pid 471] <... close resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=469, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 475] <... mmap resumed>) = 0x7fe6f03b1000 [pid 471] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 471] <... futex resumed>) = 1 [pid 467] <... futex resumed>) = 0 [pid 471] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 467] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 471] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 467] <... futex resumed>) = 0 [pid 473] ioctl(7, LOOP_SET_FD, 6 [pid 471] mknod(0x20000000, 000 [pid 467] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 473] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 471] <... mknod resumed>) = -1 EEXIST (File exists) [pid 473] close(7) = 0 [pid 471] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 473] close(6) = 0 [pid 471] <... futex resumed>) = 1 [pid 467] <... futex resumed>) = 0 [pid 473] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 471] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 473] <... futex resumed>) = 1 [pid 470] <... futex resumed>) = 0 [pid 467] exit_group(0 [pid 473] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 470] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 475] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 473] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 471] <... futex resumed>) = ? [pid 470] <... futex resumed>) = 0 [pid 467] <... exit_group resumed>) = ? [pid 473] mknod(0x20000000, 000 [pid 471] +++ exited with 0 +++ [pid 470] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 473] <... mknod resumed>) = -1 EEXIST (File exists) [pid 473] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 470] <... futex resumed>) = 0 [pid 473] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 470] exit_group(0 [pid 467] +++ exited with 0 +++ [pid 473] <... futex resumed>) = ? [pid 470] <... exit_group resumed>) = ? [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=467, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 475] <... write resumed>) = 262144 [pid 473] +++ exited with 0 +++ [pid 470] +++ exited with 0 +++ [pid 476] <... set_robust_list resumed>) = 0 [pid 475] munmap(0x7fe6f03b1000, 138412032 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=470, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 476] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 475] <... munmap resumed>) = 0 [pid 303] <... openat resumed>) = 3 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 475] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 303] ioctl(3, LOOP_CLR_FD [pid 302] <... openat resumed>) = 3 [pid 475] <... openat resumed>) = 4 [pid 303] <... ioctl resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 475] ioctl(4, LOOP_SET_FD, 3 [pid 303] close(3 [pid 302] <... ioctl resumed>) = 0 [pid 476] <... prctl resumed>) = 0 [pid 475] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] <... close resumed>) = 0 [pid 302] close(3 [pid 475] ioctl(4, LOOP_CLR_FD [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 302] <... close resumed>) = 0 [pid 476] setpgid(0, 0) = 0 [pid 476] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 475] <... ioctl resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 477 [pid 476] <... openat resumed>) = 3 [pid 306] <... restart_syscall resumed>) = 0 [pid 476] write(3, "1000", 4 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 478 [pid 476] <... write resumed>) = 4 [pid 476] close(3 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 476] <... close resumed>) = 0 [pid 306] <... openat resumed>) = 3 executing program [pid 476] write(1, "executing program\n", 18 [pid 306] ioctl(3, LOOP_CLR_FD [pid 476] <... write resumed>) = 18 [pid 306] <... ioctl resumed>) = 0 [pid 476] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] close(3 [pid 476] <... futex resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 475] ioctl(4, LOOP_SET_FD, 3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 475] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 476] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 476] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 475] close(4 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 479 [pid 475] <... close resumed>) = 0 [pid 476] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 475] close(3 [pid 476] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 476] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 476] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 475] <... close resumed>) = 0 [pid 476] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[480]}, 88) = 480 [pid 476] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 476] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 476] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 477 attached [pid 477] set_robust_list(0x5555636e06a0, 24) = 0 [pid 477] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 477] setpgid(0, 0) = 0 [pid 477] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 477] write(3, "1000", 4) = 4 [pid 477] close(3) = 0 [pid 477] write(1, "executing program\n", 18executing program ) = 18 [pid 477] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 479 attached [pid 479] set_robust_list(0x5555636e06a0, 24 [pid 477] <... futex resumed>) = 0 [pid 477] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 479] <... set_robust_list resumed>) = 0 [pid 477] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 479] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 477] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 477] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 477] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 477] rt_sigprocmask(SIG_BLOCK, ~[], [pid 479] <... prctl resumed>) = 0 [pid 479] setpgid(0, 0) = 0 [pid 475] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 478 attached ) = 1 [pid 474] <... futex resumed>) = 0 [pid 478] set_robust_list(0x5555636e06a0, 24 [pid 475] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 474] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 478] <... set_robust_list resumed>) = 0 [pid 475] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 474] <... futex resumed>) = 0 [pid 475] chdir("./file0" [pid 474] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 478] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 475] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 478] <... prctl resumed>) = 0 [pid 475] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 479] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 478] setpgid(0, 0 [pid 477] <... rt_sigprocmask resumed>[], 8) = 0 [pid 475] <... futex resumed>) = 1 [pid 474] <... futex resumed>) = 0 [pid 478] <... setpgid resumed>) = 0 [pid 475] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 474] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 475] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 474] <... futex resumed>) = 0 [pid 475] creat("./bus", 000 [pid 474] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 479] <... openat resumed>) = 3 [pid 478] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 477] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 475] <... creat resumed>) = 3 [pid 479] write(3, "1000", 4 [pid 478] <... openat resumed>) = 3 [pid 475] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 478] write(3, "1000", 4 [pid 475] <... futex resumed>) = 1 [pid 474] <... futex resumed>) = 0 [pid 478] <... write resumed>) = 4 [pid 475] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 474] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 478] close(3 [pid 475] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 474] <... futex resumed>) = 0 [pid 478] <... close resumed>) = 0 [pid 475] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 474] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 478] write(1, "executing program\n", 18executing program ./strace-static-x86_64: Process 480 attached [pid 479] <... write resumed>) = 4 [pid 478] <... write resumed>) = 18 [pid 477] <... clone3 resumed> => {parent_tid=[481]}, 88) = 481 [pid 475] <... openat resumed>) = 4 [pid 480] set_robust_list(0x7fe6f87d19a0, 24 [pid 479] close(3 [pid 478] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 477] rt_sigprocmask(SIG_SETMASK, [], [pid 475] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 478] <... futex resumed>) = 0 [pid 475] <... futex resumed>) = 1 [pid 478] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 474] <... futex resumed>) = 0 [pid 478] <... rt_sigaction resumed>NULL, 8) = 0 [pid 475] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 474] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 478] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 475] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 474] <... futex resumed>) = 0 [pid 478] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 475] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 474] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 478] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0executing program [pid 480] <... set_robust_list resumed>) = 0 [pid 479] <... close resumed>) = 0 [pid 478] <... mmap resumed>) = 0x7fe6f87b1000 [pid 477] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 475] <... mount resumed>) = 0 [pid 478] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 475] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 478] <... mprotect resumed>) = 0 [pid 475] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 474] <... futex resumed>) = 0 [pid 474] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 475] <... futex resumed>) = 0 [pid 474] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 475] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 478] rt_sigprocmask(SIG_BLOCK, ~[], [pid 480] rt_sigprocmask(SIG_SETMASK, [], [pid 479] write(1, "executing program\n", 18 [pid 478] <... rt_sigprocmask resumed>[], 8) = 0 [pid 477] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 475] <... open resumed>) = 5 [pid 480] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 479] <... write resumed>) = 18 [pid 478] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 477] <... futex resumed>) = 0 [pid 475] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 480] memfd_create("syzkaller", 0 [pid 479] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 477] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 475] <... futex resumed>) = 1 [pid 474] <... futex resumed>) = 0 [pid 480] <... memfd_create resumed>) = 3 [pid 479] <... futex resumed>) = 0 [pid 478] <... clone3 resumed> => {parent_tid=[482]}, 88) = 482 [pid 475] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 474] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 481 attached [pid 480] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 479] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 478] rt_sigprocmask(SIG_SETMASK, [], [pid 475] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 474] <... futex resumed>) = 0 [pid 481] set_robust_list(0x7fe6f87d19a0, 24 [pid 480] <... mmap resumed>) = 0x7fe6f03b1000 [pid 479] <... rt_sigaction resumed>NULL, 8) = 0 [pid 478] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 475] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 474] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 480] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 479] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 480] <... write resumed>) = 262144 [pid 479] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 480] munmap(0x7fe6f03b1000, 138412032 [pid 479] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 480] <... munmap resumed>) = 0 [pid 479] <... mmap resumed>) = 0x7fe6f87b1000 [pid 480] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 479] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 480] <... openat resumed>) = 4 [pid 479] <... mprotect resumed>) = 0 [pid 480] ioctl(4, LOOP_SET_FD, 3 [pid 479] rt_sigprocmask(SIG_BLOCK, ~[], [pid 480] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 479] <... rt_sigprocmask resumed>[], 8) = 0 [pid 480] ioctl(4, LOOP_CLR_FD [pid 479] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 475] <... mmap resumed>) = 0x20000000 [pid 480] <... ioctl resumed>) = 0 [pid 478] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 475] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 479] <... clone3 resumed> => {parent_tid=[483]}, 88) = 483 [pid 478] <... futex resumed>) = 0 [pid 475] <... futex resumed>) = 1 [pid 474] <... futex resumed>) = 0 [pid 479] rt_sigprocmask(SIG_SETMASK, [], [pid 478] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 475] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 474] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 479] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 475] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 474] <... futex resumed>) = 0 [pid 479] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 475] memfd_create("syzkaller", 0 [pid 474] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 479] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 475] <... memfd_create resumed>) = 6 [pid 481] <... set_robust_list resumed>) = 0 [pid 475] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 481] rt_sigprocmask(SIG_SETMASK, [], [pid 480] ioctl(4, LOOP_SET_FD, 3 [pid 475] <... mmap resumed>) = 0x7fe6f03b1000 [pid 481] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 480] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 480] close(4) = 0 [pid 480] close(3) = 0 [pid 475] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 480] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 476] <... futex resumed>) = 0 [pid 480] chdir("./file0" [pid 476] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 480] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 476] <... futex resumed>) = 0 [pid 475] <... write resumed>) = 131072 [pid 481] memfd_create("syzkaller", 0 [pid 480] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 476] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 475] munmap(0x7fe6f03b1000, 138412032 [pid 481] <... memfd_create resumed>) = 3 [pid 480] <... futex resumed>) = 0 [pid 476] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 481] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 480] creat("./bus", 000 [pid 476] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 475] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 482 attached [pid 481] <... mmap resumed>) = 0x7fe6f03b1000 [pid 480] <... creat resumed>) = 3 [pid 476] <... futex resumed>) = 0 [pid 475] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 480] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 476] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 480] <... futex resumed>) = 0 [pid 476] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 475] <... openat resumed>) = 7 [pid 480] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 476] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 475] ioctl(7, LOOP_SET_FD, 6 [pid 480] <... openat resumed>) = 4 [pid 476] <... futex resumed>) = 0 [pid 480] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 476] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 475] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 480] <... futex resumed>) = 0 [pid 476] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 475] ioctl(7, LOOP_CLR_FD [pid 480] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 476] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 483 attached [pid 480] <... mount resumed>) = 0 [pid 476] <... futex resumed>) = 0 [pid 475] <... ioctl resumed>) = 0 [pid 483] set_robust_list(0x7fe6f87d19a0, 24 [pid 481] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 480] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 476] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 482] set_robust_list(0x7fe6f87d19a0, 24 [pid 483] <... set_robust_list resumed>) = 0 [pid 480] <... futex resumed>) = 0 [pid 476] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 483] rt_sigprocmask(SIG_SETMASK, [], [pid 480] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 476] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 483] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 480] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 476] <... futex resumed>) = 0 [pid 483] memfd_create("syzkaller", 0 [pid 480] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 476] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 483] <... memfd_create resumed>) = 3 [pid 482] <... set_robust_list resumed>) = 0 [pid 481] <... write resumed>) = 262144 [pid 480] <... open resumed>) = 5 [pid 483] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 480] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 475] ioctl(7, LOOP_SET_FD, 6 [pid 483] <... mmap resumed>) = 0x7fe6f03b1000 [pid 482] rt_sigprocmask(SIG_SETMASK, [], [pid 481] munmap(0x7fe6f03b1000, 138412032 [pid 480] <... futex resumed>) = 1 [pid 476] <... futex resumed>) = 0 [pid 475] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 483] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 482] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 481] <... munmap resumed>) = 0 [pid 480] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 476] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 475] close(7 [pid 482] memfd_create("syzkaller", 0 [pid 481] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 480] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 476] <... futex resumed>) = 0 [pid 482] <... memfd_create resumed>) = 3 [pid 481] <... openat resumed>) = 4 [pid 480] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 476] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 475] <... close resumed>) = 0 [pid 482] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 481] ioctl(4, LOOP_SET_FD, 3 [pid 480] <... mmap resumed>) = 0x20000000 [pid 475] close(6 [pid 482] <... mmap resumed>) = 0x7fe6f03b1000 [pid 481] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 480] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 483] <... write resumed>) = 262144 [pid 481] ioctl(4, LOOP_CLR_FD [pid 480] <... futex resumed>) = 1 [pid 476] <... futex resumed>) = 0 [pid 475] <... close resumed>) = 0 [pid 481] <... ioctl resumed>) = 0 [pid 480] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 476] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 475] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 480] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 476] <... futex resumed>) = 0 [pid 480] memfd_create("syzkaller", 0 [pid 476] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 475] <... futex resumed>) = 1 [pid 474] <... futex resumed>) = 0 [pid 482] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 480] <... memfd_create resumed>) = 6 [pid 475] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 474] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 480] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 475] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 474] <... futex resumed>) = 0 [pid 480] <... mmap resumed>) = 0x7fe6f03b1000 [pid 475] mknod(0x20000000, 000 [pid 474] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 483] munmap(0x7fe6f03b1000, 138412032 [pid 482] <... write resumed>) = 262144 [pid 480] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 475] <... mknod resumed>) = -1 EEXIST (File exists) [pid 483] <... munmap resumed>) = 0 [pid 482] munmap(0x7fe6f03b1000, 138412032 [pid 481] ioctl(4, LOOP_SET_FD, 3 [pid 480] <... write resumed>) = 131072 [pid 475] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 483] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 482] <... munmap resumed>) = 0 [pid 481] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 480] munmap(0x7fe6f03b1000, 138412032 [pid 475] <... futex resumed>) = 1 [pid 474] <... futex resumed>) = 0 [pid 483] <... openat resumed>) = 4 [pid 482] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 481] close(4 [pid 480] <... munmap resumed>) = 0 [pid 475] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 474] exit_group(0 [pid 483] ioctl(4, LOOP_SET_FD, 3 [pid 482] <... openat resumed>) = 4 [pid 481] <... close resumed>) = 0 [pid 480] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 474] <... exit_group resumed>) = ? [pid 483] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 482] ioctl(4, LOOP_SET_FD, 3 [pid 481] close(3 [pid 480] <... openat resumed>) = 7 [pid 475] <... futex resumed>) = ? [pid 483] ioctl(4, LOOP_CLR_FD [pid 480] ioctl(7, LOOP_SET_FD, 6 [pid 483] <... ioctl resumed>) = 0 [pid 480] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 480] ioctl(7, LOOP_CLR_FD) = 0 [pid 481] <... close resumed>) = 0 [pid 475] +++ exited with 0 +++ [pid 481] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 474] +++ exited with 0 +++ [pid 482] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 483] ioctl(4, LOOP_SET_FD, 3 [pid 482] ioctl(4, LOOP_CLR_FD [pid 481] <... futex resumed>) = 1 [pid 480] ioctl(7, LOOP_SET_FD, 6 [pid 477] <... futex resumed>) = 0 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=474, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 483] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 482] <... ioctl resumed>) = 0 [pid 481] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 480] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 477] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 483] close(4 [pid 481] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 480] close(7 [pid 477] <... futex resumed>) = 0 [pid 483] <... close resumed>) = 0 [pid 481] chdir("./file0" [pid 480] <... close resumed>) = 0 [pid 477] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 483] close(3 [pid 481] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 480] close(6 [pid 483] <... close resumed>) = 0 [pid 481] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 480] <... close resumed>) = 0 [pid 483] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 482] ioctl(4, LOOP_SET_FD, 3 [pid 481] <... futex resumed>) = 1 [pid 480] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 477] <... futex resumed>) = 0 [pid 483] <... futex resumed>) = 1 [pid 482] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 481] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 480] <... futex resumed>) = 1 [pid 479] <... futex resumed>) = 0 [pid 477] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 476] <... futex resumed>) = 0 [pid 483] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 482] close(4 [pid 481] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 480] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 479] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 477] <... futex resumed>) = 0 [pid 476] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... restart_syscall resumed>) = 0 [pid 483] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 482] <... close resumed>) = 0 [pid 481] creat("./bus", 000 [pid 480] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 479] <... futex resumed>) = 0 [pid 477] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 476] <... futex resumed>) = 0 [pid 483] chdir("./file0" [pid 482] close(3 [pid 481] <... creat resumed>) = 3 [pid 480] mknod(0x20000000, 000 [pid 479] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 476] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 483] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 480] <... mknod resumed>) = -1 EEXIST (File exists) [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 483] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 480] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... openat resumed>) = 3 [pid 483] <... futex resumed>) = 1 [pid 482] <... close resumed>) = 0 [pid 481] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 480] <... futex resumed>) = 1 [pid 479] <... futex resumed>) = 0 [pid 476] <... futex resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 483] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 482] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 481] <... futex resumed>) = 1 [pid 480] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 479] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 477] <... futex resumed>) = 0 [pid 476] exit_group(0 [pid 304] <... ioctl resumed>) = 0 [pid 483] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 482] <... futex resumed>) = 1 [pid 481] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 480] <... futex resumed>) = ? [pid 479] <... futex resumed>) = 0 [pid 478] <... futex resumed>) = 0 [pid 477] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 476] <... exit_group resumed>) = ? [pid 304] close(3 [pid 483] creat("./bus", 000 [pid 482] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 481] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 480] +++ exited with 0 +++ [pid 479] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 478] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 477] <... futex resumed>) = 0 [pid 476] +++ exited with 0 +++ [pid 304] <... close resumed>) = 0 [pid 483] <... creat resumed>) = 3 [pid 482] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 481] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 478] <... futex resumed>) = 0 [pid 477] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 483] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 482] chdir("./file0" [pid 481] <... openat resumed>) = 4 [pid 478] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=476, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 483] <... futex resumed>) = 1 [pid 482] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 481] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 479] <... futex resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 484 [pid 483] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 482] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 481] <... futex resumed>) = 1 [pid 479] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 477] <... futex resumed>) = 0 [pid 483] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 482] <... futex resumed>) = 1 [pid 481] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 479] <... futex resumed>) = 0 [pid 478] <... futex resumed>) = 0 [pid 477] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 483] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 482] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 481] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 479] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 478] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 477] <... futex resumed>) = 0 [pid 483] <... openat resumed>) = 4 [pid 482] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 481] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 478] <... futex resumed>) = 0 [pid 477] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 483] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 482] creat("./bus", 000 [pid 481] <... mount resumed>) = 0 [pid 478] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 483] <... futex resumed>) = 1 [pid 479] <... futex resumed>) = 0 [pid 483] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 482] <... creat resumed>) = 3 [pid 481] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 479] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 483] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 482] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 481] <... futex resumed>) = 1 [pid 479] <... futex resumed>) = 0 [pid 477] <... futex resumed>) = 0 ./strace-static-x86_64: Process 484 attached [pid 483] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 482] <... futex resumed>) = 1 [pid 481] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 479] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 478] <... futex resumed>) = 0 [pid 477] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 484] set_robust_list(0x5555636e06a0, 24 [pid 483] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 482] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 481] <... open resumed>) = 5 [pid 478] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 477] <... futex resumed>) = 0 [pid 484] <... set_robust_list resumed>) = 0 [pid 483] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 482] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 481] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 478] <... futex resumed>) = 0 [pid 477] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 484] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 483] <... futex resumed>) = 1 [pid 482] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 481] <... futex resumed>) = 0 [pid 479] <... futex resumed>) = 0 [pid 478] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 477] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 484] <... prctl resumed>) = 0 [pid 483] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 482] <... openat resumed>) = 4 [pid 481] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 479] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 477] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 484] setpgid(0, 0 [pid 483] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 482] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 481] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 479] <... futex resumed>) = 0 [pid 477] <... futex resumed>) = 0 [pid 484] <... setpgid resumed>) = 0 [pid 483] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 482] <... futex resumed>) = 1 [pid 481] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 479] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 478] <... futex resumed>) = 0 [pid 477] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 483] <... open resumed>) = 5 [pid 482] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 483] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 481] <... mmap resumed>) = 0x20000000 [pid 478] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 484] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 483] <... futex resumed>) = 1 [pid 482] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 481] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 479] <... futex resumed>) = 0 [pid 478] <... futex resumed>) = 0 [pid 484] <... openat resumed>) = 3 [pid 483] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 482] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 481] <... futex resumed>) = 1 [pid 479] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 478] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 477] <... futex resumed>) = 0 [pid 484] write(3, "1000", 4 [pid 483] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 482] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 481] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 479] <... futex resumed>) = 0 [pid 477] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... restart_syscall resumed>) = 0 [pid 484] <... write resumed>) = 4 [pid 483] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 482] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 481] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 479] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 477] <... futex resumed>) = 0 [pid 484] close(3 [pid 483] <... mmap resumed>) = 0x20000000 [pid 482] <... futex resumed>) = 1 [pid 481] memfd_create("syzkaller", 0 [pid 478] <... futex resumed>) = 0 [pid 477] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}executing program [pid 484] <... close resumed>) = 0 [pid 483] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 482] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 481] <... memfd_create resumed>) = 6 [pid 478] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 484] write(1, "executing program\n", 18 [pid 483] <... futex resumed>) = 1 [pid 482] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 481] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 479] <... futex resumed>) = 0 [pid 478] <... futex resumed>) = 0 [pid 484] <... write resumed>) = 18 [pid 483] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 482] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 481] <... mmap resumed>) = 0x7fe6f03b1000 [pid 479] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 483] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 482] <... open resumed>) = 5 [pid 479] <... futex resumed>) = 0 [pid 478] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 483] memfd_create("syzkaller", 0 [pid 479] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 483] <... memfd_create resumed>) = 6 [pid 483] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 484] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 483] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 482] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 481] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 305] <... openat resumed>) = 3 [pid 484] <... futex resumed>) = 0 [pid 483] <... write resumed>) = 131072 [pid 482] <... futex resumed>) = 1 [pid 478] <... futex resumed>) = 0 [pid 483] munmap(0x7fe6f03b1000, 138412032 [pid 481] <... write resumed>) = 131072 [pid 482] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 478] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] ioctl(3, LOOP_CLR_FD [pid 484] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 483] <... munmap resumed>) = 0 [pid 482] <... mmap resumed>) = 0x20000000 [pid 481] munmap(0x7fe6f03b1000, 138412032 [pid 478] <... futex resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 484] <... rt_sigaction resumed>NULL, 8) = 0 [pid 483] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 482] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 478] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] close(3 [pid 484] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 483] <... openat resumed>) = 7 [pid 482] <... futex resumed>) = 0 [pid 481] <... munmap resumed>) = 0 [pid 478] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 484] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 483] ioctl(7, LOOP_SET_FD, 6 [pid 482] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 481] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 478] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... close resumed>) = 0 [pid 484] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 483] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 482] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 481] <... openat resumed>) = 7 [pid 478] <... futex resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 484] <... mmap resumed>) = 0x7fe6f87b1000 [pid 483] ioctl(7, LOOP_CLR_FD) = 0 [pid 482] memfd_create("syzkaller", 0 [pid 481] ioctl(7, LOOP_SET_FD, 6 [pid 478] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 481] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 484] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 482] <... memfd_create resumed>) = 6 [pid 481] ioctl(7, LOOP_CLR_FD [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 485 [pid 484] <... mprotect resumed>) = 0 [pid 482] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 481] <... ioctl resumed>) = 0 [pid 484] rt_sigprocmask(SIG_BLOCK, ~[], [pid 482] <... mmap resumed>) = 0x7fe6f03b1000 [pid 484] <... rt_sigprocmask resumed>[], 8) = 0 ./strace-static-x86_64: Process 485 attached [pid 485] set_robust_list(0x5555636e06a0, 24) = 0 [pid 485] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 483] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 483] close(7) = 0 [pid 483] close(6 [pid 484] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 483] <... close resumed>) = 0 [pid 482] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 483] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 479] <... futex resumed>) = 0 [pid 483] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 479] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 483] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 479] <... futex resumed>) = 0 [pid 483] mknod(0x20000000, 000 [pid 479] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 484] <... clone3 resumed> => {parent_tid=[486]}, 88) = 486 [pid 483] <... mknod resumed>) = -1 EEXIST (File exists) [pid 482] <... write resumed>) = 131072 [pid 484] rt_sigprocmask(SIG_SETMASK, [], [pid 483] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 482] munmap(0x7fe6f03b1000, 138412032 [pid 481] ioctl(7, LOOP_SET_FD, 6 [pid 484] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 483] <... futex resumed>) = 1 [pid 479] <... futex resumed>) = 0 [pid 484] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 483] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 482] <... munmap resumed>) = 0 [pid 481] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 479] exit_group(0 [pid 484] <... futex resumed>) = 0 [pid 483] <... futex resumed>) = ? [pid 482] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 481] close(7 [pid 479] <... exit_group resumed>) = ? [pid 484] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 483] +++ exited with 0 +++ [pid 482] <... openat resumed>) = 7 [pid 481] <... close resumed>) = 0 [pid 479] +++ exited with 0 +++ [pid 482] ioctl(7, LOOP_SET_FD, 6 [pid 481] close(6 [pid 482] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=479, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 485] <... prctl resumed>) = 0 [pid 485] setpgid(0, 0 [pid 482] ioctl(7, LOOP_CLR_FD [pid 481] <... close resumed>) = 0 [pid 482] <... ioctl resumed>) = 0 [pid 481] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 485] <... setpgid resumed>) = 0 [pid 481] <... futex resumed>) = 1 [pid 477] <... futex resumed>) = 0 [pid 485] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 481] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 477] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 485] <... openat resumed>) = 3 [pid 481] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 477] <... futex resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 485] write(3, "1000", 4 [pid 477] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 485] <... write resumed>) = 4 [pid 485] close(3) = 0 executing program [pid 485] write(1, "executing program\n", 18) = 18 [pid 485] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 485] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 485] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 485] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 485] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 485] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 485] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[487]}, 88) = 487 [pid 485] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 485] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 485] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 487 attached [pid 487] set_robust_list(0x7fe6f87d19a0, 24 [pid 481] mknod(0x20000000, 000 [pid 306] <... openat resumed>) = 3 [pid 482] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 481] <... mknod resumed>) = -1 EEXIST (File exists) [pid 306] ioctl(3, LOOP_CLR_FD [pid 482] close(7 [pid 481] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... ioctl resumed>) = 0 [pid 482] <... close resumed>) = 0 [pid 481] <... futex resumed>) = 1 [pid 477] <... futex resumed>) = 0 [pid 306] close(3 [pid 482] close(6 [pid 481] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 477] exit_group(0) = ? [pid 306] <... close resumed>) = 0 [pid 482] <... close resumed>) = 0 [pid 481] <... futex resumed>) = ? [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 482] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 487] <... set_robust_list resumed>) = 0 [pid 487] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 487] memfd_create("syzkaller", 0 [pid 481] +++ exited with 0 +++ [pid 477] +++ exited with 0 +++ [pid 487] <... memfd_create resumed>) = 3 [pid 482] <... futex resumed>) = 1 [pid 478] <... futex resumed>) = 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=477, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 482] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 478] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 488 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 482] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 478] <... futex resumed>) = 0 [pid 482] mknod(0x20000000, 000 [pid 478] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 482] <... mknod resumed>) = -1 EEXIST (File exists) [pid 482] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 478] <... futex resumed>) = 0 [pid 482] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 478] exit_group(0 [pid 482] <... futex resumed>) = ? [pid 478] <... exit_group resumed>) = ? [pid 482] +++ exited with 0 +++ [pid 487] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 478] +++ exited with 0 +++ [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=478, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 487] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 ./strace-static-x86_64: Process 488 attached [pid 488] set_robust_list(0x5555636e06a0, 24) = 0 [pid 488] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 488] setpgid(0, 0) = 0 [pid 488] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 488] write(3, "1000", 4) = 4 [pid 488] close(3) = 0 [pid 488] write(1, "executing program\n", 18executing program ) = 18 [pid 488] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 488] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 488] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 488] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 488] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 302] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 486 attached [pid 486] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 486] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 303] <... openat resumed>) = 3 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 303] ioctl(3, LOOP_CLR_FD [pid 486] memfd_create("syzkaller", 0 [pid 303] <... ioctl resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 303] close(3 [pid 302] ioctl(3, LOOP_CLR_FD [pid 486] <... memfd_create resumed>) = 3 [pid 303] <... close resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 486] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 302] close(3 [pid 488] rt_sigprocmask(SIG_BLOCK, ~[], [pid 486] <... mmap resumed>) = 0x7fe6f03b1000 [pid 302] <... close resumed>) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 489 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 488] <... rt_sigprocmask resumed>[], 8) = 0 [pid 488] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 487] munmap(0x7fe6f03b1000, 138412032 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 490 [pid 487] <... munmap resumed>) = 0 [pid 488] <... clone3 resumed> => {parent_tid=[491]}, 88) = 491 [pid 488] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 488] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 487] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 488] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 487] <... openat resumed>) = 4 [pid 487] ioctl(4, LOOP_SET_FD, 3 [pid 486] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 487] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 487] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 490 attached [pid 490] set_robust_list(0x5555636e06a0, 24) = 0 [pid 490] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 490] setpgid(0, 0) = 0 [pid 490] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 487] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 487] close(4) = 0 [pid 487] close(3) = 0 [pid 486] <... write resumed>) = 262144 [pid 487] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] munmap(0x7fe6f03b1000, 138412032 [pid 485] <... futex resumed>) = 0 [pid 485] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 485] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 486] <... munmap resumed>) = 0 [pid 487] <... futex resumed>) = 1 [pid 487] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 487] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 485] <... futex resumed>) = 0 [pid 485] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 485] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 487] <... futex resumed>) = 1 [pid 487] creat("./bus", 000) = 3 [pid 487] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 485] <... futex resumed>) = 0 [pid 485] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 485] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 487] <... futex resumed>) = 1 [pid 487] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 487] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 485] <... futex resumed>) = 0 [pid 485] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 485] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 487] <... futex resumed>) = 1 [pid 487] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL) = -1 ENOSPC (No space left on device) [pid 487] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 485] <... futex resumed>) = 0 [pid 485] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 485] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 487] <... futex resumed>) = 1 [pid 487] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 487] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 485] <... futex resumed>) = 0 [pid 485] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 485] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 487] <... futex resumed>) = 1 [pid 487] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 487] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 485] <... futex resumed>) = 0 [pid 485] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 485] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 487] <... futex resumed>) = 1 [pid 487] memfd_create("syzkaller", 0) = 6 [pid 487] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 487] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 490] <... openat resumed>) = 3 ./strace-static-x86_64: Process 491 attached ./strace-static-x86_64: Process 489 attached [pid 486] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 491] set_robust_list(0x7fe6f87d19a0, 24 [pid 489] set_robust_list(0x5555636e06a0, 24 [pid 491] <... set_robust_list resumed>) = 0 [pid 489] <... set_robust_list resumed>) = 0 [pid 486] <... openat resumed>) = 4 [pid 489] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 486] ioctl(4, LOOP_SET_FD, 3 [pid 491] rt_sigprocmask(SIG_SETMASK, [], [pid 489] <... prctl resumed>) = 0 [pid 486] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 491] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 489] setpgid(0, 0 [pid 486] ioctl(4, LOOP_CLR_FD) = 0 [pid 489] <... setpgid resumed>) = 0 executing program [pid 490] write(3, "1000", 4 [pid 489] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 491] memfd_create("syzkaller", 0 [pid 490] <... write resumed>) = 4 [pid 490] close(3) = 0 [pid 489] <... openat resumed>) = 3 [pid 491] <... memfd_create resumed>) = 3 [pid 490] write(1, "executing program\n", 18 [pid 491] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 489] write(3, "1000", 4 [pid 491] <... mmap resumed>) = 0x7fe6f03b1000 [pid 489] <... write resumed>) = 4 [pid 490] <... write resumed>) = 18 [pid 490] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000executing program ) = 0 [pid 490] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 490] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 490] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 490] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 489] close(3 [pid 486] ioctl(4, LOOP_SET_FD, 3 [pid 490] <... mprotect resumed>) = 0 [pid 489] <... close resumed>) = 0 [pid 486] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 489] write(1, "executing program\n", 18 [pid 486] close(4 [pid 490] rt_sigprocmask(SIG_BLOCK, ~[], [pid 489] <... write resumed>) = 18 [pid 486] <... close resumed>) = 0 [pid 490] <... rt_sigprocmask resumed>[], 8) = 0 [pid 489] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] close(3 [pid 490] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[492]}, 88) = 492 [pid 490] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 489] <... futex resumed>) = 0 [pid 487] <... write resumed>) = 131072 [pid 486] <... close resumed>) = 0 [pid 491] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 490] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 489] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 486] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 490] <... futex resumed>) = 0 [pid 489] <... rt_sigaction resumed>NULL, 8) = 0 [pid 486] <... futex resumed>) = 1 [pid 484] <... futex resumed>) = 0 [pid 489] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 486] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 484] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 490] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 489] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 487] munmap(0x7fe6f03b1000, 138412032 [pid 486] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 484] <... futex resumed>) = 0 [pid 489] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 486] chdir("./file0" [pid 484] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 489] <... mmap resumed>) = 0x7fe6f87b1000 [pid 486] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 489] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 486] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 489] <... mprotect resumed>) = 0 [pid 486] <... futex resumed>) = 1 [pid 484] <... futex resumed>) = 0 [pid 489] rt_sigprocmask(SIG_BLOCK, ~[], [pid 487] <... munmap resumed>) = 0 [pid 486] creat("./bus", 000 [pid 484] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 491] <... write resumed>) = 262144 [pid 489] <... rt_sigprocmask resumed>[], 8) = 0 [pid 491] munmap(0x7fe6f03b1000, 138412032 [pid 489] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 487] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 486] <... creat resumed>) = 3 [pid 484] <... futex resumed>) = 0 [pid 487] <... openat resumed>) = 7 [pid 486] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 484] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 491] <... munmap resumed>) = 0 [pid 489] <... clone3 resumed> => {parent_tid=[493]}, 88) = 493 [pid 486] <... futex resumed>) = 0 [pid 484] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 489] rt_sigprocmask(SIG_SETMASK, [], [pid 486] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 484] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 491] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 489] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 486] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 484] <... futex resumed>) = 0 [pid 489] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 484] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 491] <... openat resumed>) = 4 [pid 489] <... futex resumed>) = 0 [pid 491] ioctl(4, LOOP_SET_FD, 3 [pid 489] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 487] ioctl(7, LOOP_SET_FD, 6 [pid 486] <... openat resumed>) = 4 [pid 491] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 486] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 491] ioctl(4, LOOP_CLR_FD [pid 487] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 486] <... futex resumed>) = 1 [pid 484] <... futex resumed>) = 0 [pid 491] <... ioctl resumed>) = 0 [pid 486] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 484] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 484] <... futex resumed>) = 0 [pid 486] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 484] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 487] ioctl(7, LOOP_CLR_FD [pid 486] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 487] <... ioctl resumed>) = 0 [pid 486] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 484] <... futex resumed>) = 0 [pid 486] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 484] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 484] <... futex resumed>) = 0 [pid 486] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 484] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 486] <... open resumed>) = 5 [pid 491] ioctl(4, LOOP_SET_FD, 3 [pid 486] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 491] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 486] <... futex resumed>) = 1 [pid 491] close(4 [pid 484] <... futex resumed>) = 0 [pid 486] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 491] <... close resumed>) = 0 [pid 484] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 491] close(3 [pid 487] ioctl(7, LOOP_SET_FD, 6 [pid 486] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 484] <... futex resumed>) = 0 ./strace-static-x86_64: Process 492 attached [pid 487] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 486] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 484] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 492] set_robust_list(0x7fe6f87d19a0, 24 [pid 487] close(7 [pid 492] <... set_robust_list resumed>) = 0 [pid 487] <... close resumed>) = 0 [pid 486] <... mmap resumed>) = 0x20000000 [pid 492] rt_sigprocmask(SIG_SETMASK, [], [pid 487] close(6 [pid 492] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 491] <... close resumed>) = 0 [pid 487] <... close resumed>) = 0 [pid 486] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 492] memfd_create("syzkaller", 0 [pid 491] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 487] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] <... futex resumed>) = 1 [pid 492] <... memfd_create resumed>) = 3 [pid 491] <... futex resumed>) = 1 [pid 488] <... futex resumed>) = 0 [pid 487] <... futex resumed>) = 1 [pid 485] <... futex resumed>) = 0 [pid 484] <... futex resumed>) = 0 [pid 492] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 491] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 488] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 487] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 486] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 485] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 484] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 493 attached [pid 492] <... mmap resumed>) = 0x7fe6f03b1000 [pid 491] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 488] <... futex resumed>) = 0 [pid 487] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 486] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 485] <... futex resumed>) = 0 [pid 484] <... futex resumed>) = 0 [pid 493] set_robust_list(0x7fe6f87d19a0, 24 [pid 492] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 491] chdir("./file0" [pid 488] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 487] mknod(0x20000000, 000 [pid 486] memfd_create("syzkaller", 0 [pid 485] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 484] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 493] <... set_robust_list resumed>) = 0 [pid 491] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 487] <... mknod resumed>) = -1 EEXIST (File exists) [pid 486] <... memfd_create resumed>) = 6 [pid 493] rt_sigprocmask(SIG_SETMASK, [], [pid 492] <... write resumed>) = 262144 [pid 491] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 487] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 493] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 491] <... futex resumed>) = 1 [pid 488] <... futex resumed>) = 0 [pid 487] <... futex resumed>) = 1 [pid 485] <... futex resumed>) = 0 [pid 493] memfd_create("syzkaller", 0 [pid 491] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 488] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 487] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 486] <... mmap resumed>) = 0x7fe6f03b1000 [pid 485] exit_group(0 [pid 493] <... memfd_create resumed>) = 3 [pid 491] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 488] <... futex resumed>) = 0 [pid 487] <... futex resumed>) = ? [pid 485] <... exit_group resumed>) = ? [pid 492] munmap(0x7fe6f03b1000, 138412032 [pid 488] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 487] +++ exited with 0 +++ [pid 491] creat("./bus", 000 [pid 493] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 486] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 485] +++ exited with 0 +++ [pid 492] <... munmap resumed>) = 0 [pid 492] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 491] <... creat resumed>) = 3 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=485, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 492] <... openat resumed>) = 4 [pid 492] ioctl(4, LOOP_SET_FD, 3 [pid 493] <... mmap resumed>) = 0x7fe6f03b1000 [pid 491] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] <... write resumed>) = 131072 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 492] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 492] ioctl(4, LOOP_CLR_FD) = 0 [pid 493] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 491] <... futex resumed>) = 1 [pid 488] <... futex resumed>) = 0 [pid 486] munmap(0x7fe6f03b1000, 138412032 [pid 491] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 488] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 492] ioctl(4, LOOP_SET_FD, 3 [pid 491] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 488] <... futex resumed>) = 0 [pid 486] <... munmap resumed>) = 0 [pid 492] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 491] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 488] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 486] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 492] close(4 [pid 491] <... openat resumed>) = 4 [pid 486] <... openat resumed>) = 7 [pid 492] <... close resumed>) = 0 [pid 491] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] ioctl(7, LOOP_SET_FD, 6 [pid 492] close(3 [pid 491] <... futex resumed>) = 1 [pid 488] <... futex resumed>) = 0 [pid 493] <... write resumed>) = 262144 [pid 492] <... close resumed>) = 0 [pid 491] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 488] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 493] munmap(0x7fe6f03b1000, 138412032 [pid 492] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 491] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 488] <... futex resumed>) = 0 [pid 486] ioctl(7, LOOP_CLR_FD [pid 493] <... munmap resumed>) = 0 [pid 492] <... futex resumed>) = 1 [pid 491] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 490] <... futex resumed>) = 0 [pid 488] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 486] <... ioctl resumed>) = 0 [pid 493] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 492] chdir("./file0" [pid 491] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 490] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 493] <... openat resumed>) = 4 [pid 492] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 491] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 490] <... futex resumed>) = 0 [pid 493] ioctl(4, LOOP_SET_FD, 3 [pid 492] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 491] <... futex resumed>) = 1 [pid 490] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 488] <... futex resumed>) = 0 [pid 493] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 492] <... futex resumed>) = 0 [pid 491] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 490] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 488] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 493] ioctl(4, LOOP_CLR_FD [pid 492] creat("./bus", 000 [pid 491] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 490] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 488] <... futex resumed>) = 0 [pid 493] <... ioctl resumed>) = 0 [pid 492] <... creat resumed>) = 3 [pid 491] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 490] <... futex resumed>) = 0 [pid 488] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 492] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 491] <... open resumed>) = 5 [pid 490] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 492] <... futex resumed>) = 0 [pid 491] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 490] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 486] ioctl(7, LOOP_SET_FD, 6 [pid 492] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 491] <... futex resumed>) = 1 [pid 490] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 488] <... futex resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 492] <... openat resumed>) = 4 [pid 491] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 490] <... futex resumed>) = 0 [pid 488] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 492] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 491] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 490] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 488] <... futex resumed>) = 0 [pid 493] ioctl(4, LOOP_SET_FD, 3 [pid 492] <... futex resumed>) = 0 [pid 491] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 490] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 488] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 486] close(7 [pid 493] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 492] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 491] <... mmap resumed>) = 0x20000000 [pid 490] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] <... close resumed>) = 0 [pid 493] close(4 [pid 492] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 491] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 490] <... futex resumed>) = 0 [pid 493] <... close resumed>) = 0 [pid 492] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 491] <... futex resumed>) = 1 [pid 490] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 488] <... futex resumed>) = 0 [pid 486] close(6 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 493] close(3 [pid 492] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 491] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 488] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 492] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 488] <... futex resumed>) = 0 [pid 492] <... futex resumed>) = 1 [pid 490] <... futex resumed>) = 0 [pid 488] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 486] <... close resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 492] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 490] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 492] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 490] <... futex resumed>) = 0 [pid 493] <... close resumed>) = 0 [pid 492] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 491] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 490] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 486] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] ioctl(3, LOOP_CLR_FD [pid 493] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 492] <... open resumed>) = 5 [pid 491] memfd_create("syzkaller", 0 [pid 486] <... futex resumed>) = 1 [pid 484] <... futex resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 493] <... futex resumed>) = 1 [pid 492] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 491] <... memfd_create resumed>) = 6 [pid 489] <... futex resumed>) = 0 [pid 486] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 493] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 492] <... futex resumed>) = 1 [pid 491] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 490] <... futex resumed>) = 0 [pid 489] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 484] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] close(3 [pid 493] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 492] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 491] <... mmap resumed>) = 0x7fe6f03b1000 [pid 490] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 489] <... futex resumed>) = 0 [pid 486] mknod(0x20000000, 000 [pid 484] <... futex resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 493] chdir("./file0" [pid 492] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 490] <... futex resumed>) = 0 [pid 492] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 490] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 492] <... mmap resumed>) = 0x20000000 [pid 492] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 490] <... futex resumed>) = 0 [pid 492] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 490] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 492] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 490] <... futex resumed>) = 0 [pid 492] memfd_create("syzkaller", 0 [pid 491] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 490] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 489] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 486] <... mknod resumed>) = -1 EEXIST (File exists) [pid 484] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 493] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 492] <... memfd_create resumed>) = 6 [pid 492] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 493] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 492] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 491] <... write resumed>) = 131072 [pid 486] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 484] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 493] <... futex resumed>) = 1 [pid 492] <... write resumed>) = 131072 [pid 491] munmap(0x7fe6f03b1000, 138412032 [pid 489] <... futex resumed>) = 0 [pid 486] <... futex resumed>) = 0 [pid 493] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 492] munmap(0x7fe6f03b1000, 138412032 [pid 484] exit_group(0 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 494 [pid 493] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 492] <... munmap resumed>) = 0 [pid 491] <... munmap resumed>) = 0 [pid 489] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 484] <... exit_group resumed>) = ? [pid 493] creat("./bus", 000 [pid 492] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 491] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 489] <... futex resumed>) = 0 [pid 493] <... creat resumed>) = 3 [pid 492] <... openat resumed>) = 7 [pid 492] ioctl(7, LOOP_SET_FD, 6 [pid 491] <... openat resumed>) = 7 [pid 489] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 492] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 492] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 494 attached [pid 493] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 491] ioctl(7, LOOP_SET_FD, 6 [pid 486] +++ exited with 0 +++ [pid 484] +++ exited with 0 +++ [pid 493] <... futex resumed>) = 1 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=484, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 493] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 491] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 489] <... futex resumed>) = 0 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 491] ioctl(7, LOOP_CLR_FD [pid 489] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 491] <... ioctl resumed>) = 0 [pid 493] <... futex resumed>) = 0 [pid 489] <... futex resumed>) = 1 [pid 493] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 489] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 493] <... openat resumed>) = 4 [pid 493] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 492] ioctl(7, LOOP_SET_FD, 6 [pid 493] <... futex resumed>) = 1 [pid 492] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 489] <... futex resumed>) = 0 [pid 493] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 492] close(7 [pid 489] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 493] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 492] <... close resumed>) = 0 [pid 489] <... futex resumed>) = 0 [pid 493] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 492] close(6 [pid 489] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 493] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 492] <... close resumed>) = 0 [pid 493] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 492] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 491] ioctl(7, LOOP_SET_FD, 6 [pid 493] <... futex resumed>) = 1 [pid 492] <... futex resumed>) = 1 [pid 491] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 490] <... futex resumed>) = 0 [pid 489] <... futex resumed>) = 0 [pid 493] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 492] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 491] close(7 [pid 490] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 493] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 492] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 491] <... close resumed>) = 0 [pid 490] <... futex resumed>) = 0 [pid 489] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... restart_syscall resumed>) = 0 [pid 493] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 492] mknod(0x20000000, 000 [pid 491] close(6 [pid 490] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 489] <... futex resumed>) = 0 [pid 493] <... open resumed>) = 5 [pid 492] <... mknod resumed>) = -1 EEXIST (File exists) [pid 493] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 492] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 491] <... close resumed>) = 0 [pid 489] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 493] <... futex resumed>) = 0 [pid 492] <... futex resumed>) = 1 [pid 491] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 490] <... futex resumed>) = 0 [pid 489] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 304] <... openat resumed>) = 3 [pid 493] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 492] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 491] <... futex resumed>) = 1 [pid 490] exit_group(0 [pid 489] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 488] <... futex resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 494] set_robust_list(0x5555636e06a0, 24 [pid 493] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 492] <... futex resumed>) = ? [pid 491] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 490] <... exit_group resumed>) = ? [pid 489] <... futex resumed>) = 0 [pid 488] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... ioctl resumed>) = 0 [pid 494] <... set_robust_list resumed>) = 0 [pid 493] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 492] +++ exited with 0 +++ [pid 491] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 490] +++ exited with 0 +++ [pid 488] <... futex resumed>) = 0 [pid 304] close(3 [pid 494] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 488] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... close resumed>) = 0 [pid 494] <... prctl resumed>) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 494] setpgid(0, 0) = 0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 495 [pid 494] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 494] write(3, "1000", 4) = 4 [pid 494] close(3executing program ) = 0 [pid 494] write(1, "executing program\n", 18) = 18 [pid 494] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 494] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 494] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 494] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 494] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 494] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 494] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[496]}, 88) = 496 [pid 494] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 494] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 489] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 494] <... futex resumed>) = 0 [pid 493] <... mmap resumed>) = 0x20000000 [pid 491] mknod(0x20000000, 000 [pid 493] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=490, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- [pid 494] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 493] <... futex resumed>) = 1 [pid 491] <... mknod resumed>) = -1 EEXIST (File exists) [pid 489] <... futex resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 493] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 491] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 489] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 493] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 491] <... futex resumed>) = 1 [pid 489] <... futex resumed>) = 0 [pid 488] <... futex resumed>) = 0 [pid 493] memfd_create("syzkaller", 0 [pid 491] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 489] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 488] exit_group(0 [pid 493] <... memfd_create resumed>) = 6 [pid 493] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 491] <... futex resumed>) = ? [pid 488] <... exit_group resumed>) = ? [pid 493] <... mmap resumed>) = 0x7fe6f03b1000 [pid 491] +++ exited with 0 +++ ./strace-static-x86_64: Process 495 attached [pid 495] set_robust_list(0x5555636e06a0, 24) = 0 [pid 495] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 488] +++ exited with 0 +++ [pid 495] <... prctl resumed>) = 0 [pid 495] setpgid(0, 0) = 0 [pid 495] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 495] write(3, "1000", 4) = 4 [pid 495] close(3) = 0 [pid 493] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=488, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 495] write(1, "executing program\n", 18executing program ) = 18 [pid 495] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 495] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 493] <... write resumed>) = 131072 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 495] <... rt_sigaction resumed>NULL, 8) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 493] munmap(0x7fe6f03b1000, 138412032 [pid 306] <... restart_syscall resumed>) = 0 [pid 495] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 495] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 493] <... munmap resumed>) = 0 [pid 495] <... mmap resumed>) = 0x7fe6f87b1000 [pid 493] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 495] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 493] <... openat resumed>) = 7 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 302] <... openat resumed>) = 3 [pid 493] ioctl(7, LOOP_SET_FD, 6 [pid 306] <... openat resumed>) = 3 [pid 302] ioctl(3, LOOP_CLR_FD [pid 493] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] ioctl(3, LOOP_CLR_FD [pid 302] <... ioctl resumed>) = 0 [pid 493] ioctl(7, LOOP_CLR_FD [pid 306] <... ioctl resumed>) = 0 [pid 302] close(3 [pid 493] <... ioctl resumed>) = 0 [pid 306] close(3 [pid 302] <... close resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 495] <... mprotect resumed>) = 0 [pid 495] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 495] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 497 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 498 [pid 493] ioctl(7, LOOP_SET_FD, 6./strace-static-x86_64: Process 496 attached [pid 495] <... clone3 resumed> => {parent_tid=[499]}, 88) = 499 [pid 493] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 496] set_robust_list(0x7fe6f87d19a0, 24 [pid 495] rt_sigprocmask(SIG_SETMASK, [], [pid 493] close(7 [pid 496] <... set_robust_list resumed>) = 0 [pid 495] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 493] <... close resumed>) = 0 [pid 496] rt_sigprocmask(SIG_SETMASK, [], [pid 495] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 493] close(6 [pid 496] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 495] <... futex resumed>) = 0 [pid 496] memfd_create("syzkaller", 0 [pid 495] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 493] <... close resumed>) = 0 [pid 496] <... memfd_create resumed>) = 3 [pid 493] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 496] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 493] <... futex resumed>) = 1 [pid 489] <... futex resumed>) = 0 [pid 496] <... mmap resumed>) = 0x7fe6f03b1000 [pid 493] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 489] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 496] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 493] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 489] <... futex resumed>) = 0 [pid 493] mknod(0x20000000, 000 [pid 489] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 498 attached ./strace-static-x86_64: Process 497 attached [pid 493] <... mknod resumed>) = -1 EEXIST (File exists) [pid 498] set_robust_list(0x5555636e06a0, 24 [pid 493] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 497] set_robust_list(0x5555636e06a0, 24 [pid 493] <... futex resumed>) = 1 [pid 498] <... set_robust_list resumed>) = 0 [pid 489] <... futex resumed>) = 0 [pid 497] <... set_robust_list resumed>) = 0 [pid 493] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 489] exit_group(0 [pid 493] <... futex resumed>) = ? [pid 489] <... exit_group resumed>) = ? [pid 493] +++ exited with 0 +++ [pid 498] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 497] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 496] <... write resumed>) = 262144 [pid 489] +++ exited with 0 +++ [pid 498] <... prctl resumed>) = 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=489, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 497] <... prctl resumed>) = 0 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 498] setpgid(0, 0 [pid 497] setpgid(0, 0 [pid 498] <... setpgid resumed>) = 0 ./strace-static-x86_64: Process 499 attached [pid 499] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 499] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 499] memfd_create("syzkaller", 0 [pid 496] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 499] <... memfd_create resumed>) = 3 [pid 496] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 499] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 496] <... openat resumed>) = 4 [pid 499] <... mmap resumed>) = 0x7fe6f03b1000 [pid 499] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 498] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 497] <... setpgid resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 executing program [pid 498] <... openat resumed>) = 3 [pid 496] ioctl(4, LOOP_SET_FD, 3 [pid 498] write(3, "1000", 4 [pid 497] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 498] <... write resumed>) = 4 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 498] close(3 [pid 497] <... openat resumed>) = 3 [pid 496] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] <... openat resumed>) = 3 [pid 498] <... close resumed>) = 0 [pid 497] write(3, "1000", 4 [pid 303] ioctl(3, LOOP_CLR_FD [pid 498] write(1, "executing program\n", 18 [pid 497] <... write resumed>) = 4 [pid 498] <... write resumed>) = 18 [pid 497] close(3 [pid 303] <... ioctl resumed>) = 0 [pid 303] close(3 [pid 498] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 303] <... close resumed>) = 0 [pid 498] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 497] <... close resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 498] <... rt_sigaction resumed>NULL, 8) = 0 [pid 497] write(1, "executing program\n", 18 [pid 496] ioctl(4, LOOP_CLR_FD) = 0 executing program [pid 498] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 497] <... write resumed>) = 18 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 500 [pid 498] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 498] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 497] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 498] <... mmap resumed>) = 0x7fe6f87b1000 [pid 497] <... futex resumed>) = 0 [pid 498] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 497] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 498] <... mprotect resumed>) = 0 [pid 497] <... rt_sigaction resumed>NULL, 8) = 0 [pid 498] rt_sigprocmask(SIG_BLOCK, ~[], [pid 497] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 498] <... rt_sigprocmask resumed>[], 8) = 0 [pid 497] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 498] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 497] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 498] <... clone3 resumed> => {parent_tid=[501]}, 88) = 501 [pid 497] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 498] rt_sigprocmask(SIG_SETMASK, [], [pid 497] <... mprotect resumed>) = 0 [pid 498] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 499] <... write resumed>) = 262144 [pid 498] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 497] rt_sigprocmask(SIG_BLOCK, ~[], [pid 498] <... futex resumed>) = 0 [pid 497] <... rt_sigprocmask resumed>[], 8) = 0 [pid 496] ioctl(4, LOOP_SET_FD, 3 [pid 498] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 497] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 496] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 496] close(4) = 0 [pid 497] <... clone3 resumed> => {parent_tid=[502]}, 88) = 502 [pid 497] rt_sigprocmask(SIG_SETMASK, [], [pid 496] close(3 [pid 497] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 500 attached [pid 497] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 500] set_robust_list(0x5555636e06a0, 24 [pid 497] <... futex resumed>) = 0 [pid 496] <... close resumed>) = 0 [pid 500] <... set_robust_list resumed>) = 0 [pid 499] munmap(0x7fe6f03b1000, 138412032 [pid 497] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 496] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 501 attached [pid 500] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 499] <... munmap resumed>) = 0 [pid 496] <... futex resumed>) = 1 [pid 494] <... futex resumed>) = 0 [pid 499] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 496] chdir("./file0" [pid 494] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 501] set_robust_list(0x7fe6f87d19a0, 24 [pid 500] <... prctl resumed>) = 0 [pid 499] <... openat resumed>) = 4 [pid 496] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 494] <... futex resumed>) = 0 [pid 499] ioctl(4, LOOP_SET_FD, 3 [pid 496] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 494] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 501] <... set_robust_list resumed>) = 0 [pid 500] setpgid(0, 0 [pid 499] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 496] <... futex resumed>) = 0 [pid 494] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 499] ioctl(4, LOOP_CLR_FD [pid 496] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 494] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 501] rt_sigprocmask(SIG_SETMASK, [], [pid 500] <... setpgid resumed>) = 0 [pid 499] <... ioctl resumed>) = 0 [pid 496] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 494] <... futex resumed>) = 0 [pid 501] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 500] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 496] creat("./bus", 000 [pid 494] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 501] memfd_create("syzkaller", 0 [pid 500] <... openat resumed>) = 3 [pid 496] <... creat resumed>) = 3 [pid 501] <... memfd_create resumed>) = 3 [pid 500] write(3, "1000", 4 [pid 496] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 501] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 500] <... write resumed>) = 4 [pid 496] <... futex resumed>) = 1 [pid 494] <... futex resumed>) = 0 [pid 501] <... mmap resumed>) = 0x7fe6f03b1000 [pid 500] close(3 [pid 496] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 494] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 496] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 494] <... futex resumed>) = 0 [pid 499] ioctl(4, LOOP_SET_FD, 3 [pid 496] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 494] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 499] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 496] <... openat resumed>) = 4 [pid 499] close(4 [pid 496] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] <... close resumed>) = 0 [pid 496] <... futex resumed>) = 1 [pid 494] <... futex resumed>) = 0 [pid 499] close(3 [pid 496] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 494] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 501] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 500] <... close resumed>) = 0 [pid 499] <... close resumed>) = 0 [pid 496] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 494] <... futex resumed>) = 0 executing program [pid 500] write(1, "executing program\n", 18 [pid 499] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 496] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 494] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 502 attached [pid 500] <... write resumed>) = 18 [pid 499] <... futex resumed>) = 1 [pid 496] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 495] <... futex resumed>) = 0 [pid 502] set_robust_list(0x7fe6f87d19a0, 24 [pid 500] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 496] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 495] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] <... set_robust_list resumed>) = 0 [pid 501] <... write resumed>) = 262144 [pid 500] <... futex resumed>) = 0 [pid 499] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 496] <... futex resumed>) = 1 [pid 495] <... futex resumed>) = 0 [pid 494] <... futex resumed>) = 0 [pid 502] rt_sigprocmask(SIG_SETMASK, [], [pid 501] munmap(0x7fe6f03b1000, 138412032 [pid 500] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 499] chdir("./file0" [pid 496] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 495] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 494] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 501] <... munmap resumed>) = 0 [pid 500] <... rt_sigaction resumed>NULL, 8) = 0 [pid 499] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 496] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 494] <... futex resumed>) = 0 [pid 502] memfd_create("syzkaller", 0 [pid 501] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 500] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 499] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 496] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 494] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 502] <... memfd_create resumed>) = 3 [pid 501] <... openat resumed>) = 4 [pid 500] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 499] <... futex resumed>) = 1 [pid 496] <... open resumed>) = 5 [pid 495] <... futex resumed>) = 0 [pid 502] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 501] ioctl(4, LOOP_SET_FD, 3 [pid 500] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 499] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 496] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 495] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] <... mmap resumed>) = 0x7fe6f03b1000 [pid 501] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 500] <... mmap resumed>) = 0x7fe6f87b1000 [pid 499] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 496] <... futex resumed>) = 1 [pid 495] <... futex resumed>) = 0 [pid 494] <... futex resumed>) = 0 [pid 502] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 501] ioctl(4, LOOP_CLR_FD [pid 500] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 499] creat("./bus", 000 [pid 496] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 495] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 494] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] <... write resumed>) = 262144 [pid 501] <... ioctl resumed>) = 0 [pid 500] <... mprotect resumed>) = 0 [pid 499] <... creat resumed>) = 3 [pid 496] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 494] <... futex resumed>) = 0 [pid 500] rt_sigprocmask(SIG_BLOCK, ~[], [pid 499] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 496] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 494] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 500] <... rt_sigprocmask resumed>[], 8) = 0 [pid 499] <... futex resumed>) = 1 [pid 496] <... mmap resumed>) = 0x20000000 [pid 495] <... futex resumed>) = 0 [pid 502] munmap(0x7fe6f03b1000, 138412032 [pid 500] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 499] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 496] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 495] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] <... munmap resumed>) = 0 [pid 499] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 496] <... futex resumed>) = 1 [pid 495] <... futex resumed>) = 0 [pid 494] <... futex resumed>) = 0 [pid 502] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 501] ioctl(4, LOOP_SET_FD, 3 [pid 500] <... clone3 resumed> => {parent_tid=[503]}, 88) = 503 [pid 499] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 496] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 495] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 494] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] <... openat resumed>) = 4 [pid 501] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 500] rt_sigprocmask(SIG_SETMASK, [], [pid 499] <... openat resumed>) = 4 [pid 496] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 494] <... futex resumed>) = 0 [pid 502] ioctl(4, LOOP_SET_FD, 3 [pid 501] close(4 [pid 500] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 499] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 496] memfd_create("syzkaller", 0 [pid 494] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 502] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 501] <... close resumed>) = 0 [pid 500] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] <... futex resumed>) = 1 [pid 496] <... memfd_create resumed>) = 6 [pid 495] <... futex resumed>) = 0 [pid 502] ioctl(4, LOOP_CLR_FD [pid 501] close(3 [pid 500] <... futex resumed>) = 0 [pid 499] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 496] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 495] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] <... ioctl resumed>) = 0 [pid 499] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 496] <... mmap resumed>) = 0x7fe6f03b1000 [pid 495] <... futex resumed>) = 0 [pid 501] <... close resumed>) = 0 [pid 500] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 499] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 496] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 495] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 503 attached [pid 501] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 496] <... write resumed>) = 131072 [pid 503] set_robust_list(0x7fe6f87d19a0, 24 [pid 501] <... futex resumed>) = 1 [pid 499] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 498] <... futex resumed>) = 0 [pid 496] munmap(0x7fe6f03b1000, 138412032 [pid 503] <... set_robust_list resumed>) = 0 [pid 501] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 499] <... futex resumed>) = 1 [pid 498] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 496] <... munmap resumed>) = 0 [pid 495] <... futex resumed>) = 0 [pid 502] ioctl(4, LOOP_SET_FD, 3 [pid 499] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 496] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 495] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 503] rt_sigprocmask(SIG_SETMASK, [], [pid 502] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 501] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 499] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 498] <... futex resumed>) = 0 [pid 496] <... openat resumed>) = 7 [pid 495] <... futex resumed>) = 0 [pid 503] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 502] close(4 [pid 501] chdir("./file0" [pid 499] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 498] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 496] ioctl(7, LOOP_SET_FD, 6 [pid 495] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 503] memfd_create("syzkaller", 0 [pid 502] <... close resumed>) = 0 [pid 501] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 499] <... open resumed>) = 5 [pid 496] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 503] <... memfd_create resumed>) = 3 [pid 502] close(3 [pid 501] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 496] ioctl(7, LOOP_CLR_FD [pid 503] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 502] <... close resumed>) = 0 [pid 499] <... futex resumed>) = 1 [pid 496] <... ioctl resumed>) = 0 [pid 495] <... futex resumed>) = 0 [pid 502] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 495] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] <... futex resumed>) = 1 [pid 499] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 495] <... futex resumed>) = 0 [pid 502] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 499] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 495] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 499] <... mmap resumed>) = 0x20000000 [pid 499] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 495] <... futex resumed>) = 0 [pid 499] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 495] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 495] <... futex resumed>) = 0 [pid 499] memfd_create("syzkaller", 0 [pid 495] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 499] <... memfd_create resumed>) = 6 [pid 496] ioctl(7, LOOP_SET_FD, 6 [pid 499] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 496] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 499] <... mmap resumed>) = 0x7fe6f03b1000 [pid 496] close(7 [pid 499] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 496] <... close resumed>) = 0 [pid 503] <... mmap resumed>) = 0x7fe6f03b1000 [pid 501] <... futex resumed>) = 1 [pid 499] <... write resumed>) = 131072 [pid 498] <... futex resumed>) = 0 [pid 497] <... futex resumed>) = 0 [pid 496] close(6 [pid 501] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 499] munmap(0x7fe6f03b1000, 138412032 [pid 498] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 497] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 496] <... close resumed>) = 0 [pid 502] <... futex resumed>) = 0 [pid 501] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 499] <... munmap resumed>) = 0 [pid 498] <... futex resumed>) = 0 [pid 497] <... futex resumed>) = 1 [pid 496] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] chdir("./file0" [pid 501] creat("./bus", 000 [pid 499] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 498] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 497] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 496] <... futex resumed>) = 1 [pid 494] <... futex resumed>) = 0 [pid 503] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 502] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 501] <... creat resumed>) = 3 [pid 499] <... openat resumed>) = 7 [pid 496] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 494] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 501] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] ioctl(7, LOOP_SET_FD, 6 [pid 496] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 494] <... futex resumed>) = 0 [pid 502] <... futex resumed>) = 1 [pid 501] <... futex resumed>) = 1 [pid 499] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 498] <... futex resumed>) = 0 [pid 497] <... futex resumed>) = 0 [pid 496] mknod(0x20000000, 000 [pid 494] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 503] <... write resumed>) = 262144 [pid 502] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 501] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 499] ioctl(7, LOOP_CLR_FD [pid 498] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 497] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 496] <... mknod resumed>) = -1 EEXIST (File exists) [pid 503] munmap(0x7fe6f03b1000, 138412032 [pid 502] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 501] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 499] <... ioctl resumed>) = 0 [pid 498] <... futex resumed>) = 0 [pid 497] <... futex resumed>) = 0 [pid 496] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 503] <... munmap resumed>) = 0 [pid 502] creat("./bus", 000 [pid 501] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 498] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 497] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 496] <... futex resumed>) = 1 [pid 494] <... futex resumed>) = 0 [pid 503] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 502] <... creat resumed>) = 3 [pid 501] <... openat resumed>) = 4 [pid 496] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 494] exit_group(0 [pid 503] <... openat resumed>) = 4 [pid 502] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 501] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 496] <... futex resumed>) = ? [pid 494] <... exit_group resumed>) = ? [pid 503] ioctl(4, LOOP_SET_FD, 3 [pid 502] <... futex resumed>) = 1 [pid 501] <... futex resumed>) = 1 [pid 498] <... futex resumed>) = 0 [pid 497] <... futex resumed>) = 0 [pid 496] +++ exited with 0 +++ [pid 494] +++ exited with 0 +++ [pid 502] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 501] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 499] ioctl(7, LOOP_SET_FD, 6 [pid 498] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 497] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=494, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 503] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 502] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 501] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 499] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 498] <... futex resumed>) = 0 [pid 497] <... futex resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 503] ioctl(4, LOOP_CLR_FD [pid 502] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 501] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 499] close(7 [pid 498] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 497] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 503] <... ioctl resumed>) = 0 [pid 502] <... openat resumed>) = 4 [pid 501] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 499] <... close resumed>) = 0 [pid 502] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 501] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] close(6 [pid 502] <... futex resumed>) = 1 [pid 501] <... futex resumed>) = 1 [pid 499] <... close resumed>) = 0 [pid 498] <... futex resumed>) = 0 [pid 497] <... futex resumed>) = 0 [pid 502] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 501] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 499] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 498] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 497] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 501] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 499] <... futex resumed>) = 1 [pid 498] <... futex resumed>) = 0 [pid 497] <... futex resumed>) = 0 [pid 495] <... futex resumed>) = 0 [pid 502] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 501] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 499] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 498] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 497] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 495] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 503] ioctl(4, LOOP_SET_FD, 3 [pid 502] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 501] <... open resumed>) = 5 [pid 499] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 495] <... futex resumed>) = 0 [pid 503] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 502] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 501] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] mknod(0x20000000, 000 [pid 495] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 503] close(4 [pid 502] <... futex resumed>) = 1 [pid 501] <... futex resumed>) = 1 [pid 499] <... mknod resumed>) = -1 EEXIST (File exists) [pid 498] <... futex resumed>) = 0 [pid 497] <... futex resumed>) = 0 [pid 503] <... close resumed>) = 0 [pid 502] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 501] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 499] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 498] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 497] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 503] close(3 [pid 502] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 501] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 499] <... futex resumed>) = 1 [pid 498] <... futex resumed>) = 0 [pid 497] <... futex resumed>) = 0 [pid 495] <... futex resumed>) = 0 [pid 502] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 499] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 497] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 495] exit_group(0 [pid 503] <... close resumed>) = 0 [pid 502] <... open resumed>) = 5 [pid 501] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 499] <... futex resumed>) = ? [pid 498] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 495] <... exit_group resumed>) = ? [pid 305] <... restart_syscall resumed>) = 0 [pid 503] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 501] <... mmap resumed>) = 0x20000000 [pid 499] +++ exited with 0 +++ [pid 495] +++ exited with 0 +++ [pid 503] <... futex resumed>) = 1 [pid 502] <... futex resumed>) = 1 [pid 501] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 500] <... futex resumed>) = 0 [pid 497] <... futex resumed>) = 0 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=495, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 503] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 502] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 501] <... futex resumed>) = 1 [pid 500] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 497] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 503] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 502] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 501] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 500] <... futex resumed>) = 0 [pid 498] <... futex resumed>) = 0 [pid 497] <... futex resumed>) = 0 [pid 503] chdir("./file0" [pid 502] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 500] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 498] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 497] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... openat resumed>) = 3 [pid 503] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 502] <... mmap resumed>) = 0x20000000 [pid 501] <... futex resumed>) = 0 [pid 498] <... futex resumed>) = 1 [pid 305] ioctl(3, LOOP_CLR_FD [pid 503] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 503] <... futex resumed>) = 1 [pid 502] <... futex resumed>) = 1 [pid 501] memfd_create("syzkaller", 0 [pid 500] <... futex resumed>) = 0 [pid 498] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 497] <... futex resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 503] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 502] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 501] <... memfd_create resumed>) = 6 [pid 500] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 497] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 503] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 502] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 501] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 500] <... futex resumed>) = 0 [pid 497] <... futex resumed>) = 0 [pid 305] close(3 [pid 503] creat("./bus", 000 [pid 502] memfd_create("syzkaller", 0 [pid 501] <... mmap resumed>) = 0x7fe6f03b1000 [pid 500] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 497] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 503] <... creat resumed>) = 3 [pid 502] <... memfd_create resumed>) = 6 [pid 305] <... close resumed>) = 0 [pid 502] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 503] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 501] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 503] <... futex resumed>) = 1 [pid 502] <... write resumed>) = 131072 [pid 500] <... futex resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 502] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 501] <... write resumed>) = 131072 [pid 502] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 503] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 502] <... openat resumed>) = 7 [pid 501] munmap(0x7fe6f03b1000, 138412032 [pid 500] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... openat resumed>) = 3 [pid 503] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 502] ioctl(7, LOOP_SET_FD, 6 [pid 304] ioctl(3, LOOP_CLR_FD [pid 503] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 502] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 501] <... munmap resumed>) = 0 [pid 500] <... futex resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 504 [pid 304] <... ioctl resumed>) = 0 [pid 503] <... openat resumed>) = 4 [pid 502] ioctl(7, LOOP_CLR_FD [pid 501] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 500] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] close(3 [pid 503] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] <... ioctl resumed>) = 0 [pid 501] <... openat resumed>) = 7 [pid 500] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 304] <... close resumed>) = 0 [pid 503] <... futex resumed>) = 0 [pid 501] ioctl(7, LOOP_SET_FD, 6 [pid 500] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 503] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 501] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 500] <... futex resumed>) = 0 [pid 501] ioctl(7, LOOP_CLR_FD [pid 500] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 505 [pid 503] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 501] <... ioctl resumed>) = 0 [pid 503] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 503] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 502] ioctl(7, LOOP_SET_FD, 6 [pid 500] <... futex resumed>) = 0 [pid 502] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 500] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] close(7 [pid 503] <... futex resumed>) = 0 [pid 502] <... close resumed>) = 0 [pid 500] <... futex resumed>) = 1 [pid 503] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 502] close(6 [pid 500] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 504 attached [pid 503] <... open resumed>) = 5 [pid 502] <... close resumed>) = 0 [pid 504] set_robust_list(0x5555636e06a0, 24 [pid 503] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 504] <... set_robust_list resumed>) = 0 [pid 503] <... futex resumed>) = 1 [pid 502] <... futex resumed>) = 1 [pid 500] <... futex resumed>) = 0 [pid 497] <... futex resumed>) = 0 [pid 504] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 503] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 502] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 501] ioctl(7, LOOP_SET_FD, 6 [pid 500] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 497] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 504] <... prctl resumed>) = 0 [pid 503] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 502] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 501] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 500] <... futex resumed>) = 0 [pid 497] <... futex resumed>) = 0 [pid 504] setpgid(0, 0 [pid 503] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 502] mknod(0x20000000, 000 [pid 501] close(7 [pid 500] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 497] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 505 attached [pid 504] <... setpgid resumed>) = 0 [pid 503] <... mmap resumed>) = 0x20000000 [pid 502] <... mknod resumed>) = -1 EEXIST (File exists) [pid 501] <... close resumed>) = 0 [pid 505] set_robust_list(0x5555636e06a0, 24 [pid 504] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 503] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 502] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 501] close(6 [pid 505] <... set_robust_list resumed>) = 0 [pid 504] <... openat resumed>) = 3 [pid 503] <... futex resumed>) = 1 [pid 502] <... futex resumed>) = 1 [pid 500] <... futex resumed>) = 0 [pid 497] <... futex resumed>) = 0 [pid 504] write(3, "1000", 4 [pid 502] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 501] <... close resumed>) = 0 [pid 497] exit_group(0 [pid 503] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 505] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 504] <... write resumed>) = 4 [pid 502] <... futex resumed>) = ? [pid 501] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 500] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 497] <... exit_group resumed>) = ? [pid 505] <... prctl resumed>) = 0 [pid 504] close(3 [pid 503] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 502] +++ exited with 0 +++ [pid 501] <... futex resumed>) = 1 [pid 500] <... futex resumed>) = 0 [pid 498] <... futex resumed>) = 0 [pid 497] +++ exited with 0 +++ [pid 503] memfd_create("syzkaller", 0 [pid 501] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 500] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 505] setpgid(0, 0 [pid 503] <... memfd_create resumed>) = 6 [pid 501] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 498] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 505] <... setpgid resumed>) = 0 [pid 503] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 501] mknod(0x20000000, 000 [pid 498] <... futex resumed>) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=497, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 503] <... mmap resumed>) = 0x7fe6f03b1000 [pid 501] <... mknod resumed>) = -1 EEXIST (File exists) [pid 498] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 504] <... close resumed>) = 0 executing program [pid 504] write(1, "executing program\n", 18) = 18 [pid 504] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 504] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 504] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 504] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 503] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 501] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 504] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 504] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 503] <... write resumed>) = 131072 [pid 501] <... futex resumed>) = 1 [pid 498] <... futex resumed>) = 0 [pid 505] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 504] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 503] munmap(0x7fe6f03b1000, 138412032 [pid 501] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 505] <... openat resumed>) = 3 [pid 498] exit_group(0 [pid 302] <... restart_syscall resumed>) = 0 [pid 505] write(3, "1000", 4 [pid 504] <... clone3 resumed> => {parent_tid=[506]}, 88) = 506 [pid 503] <... munmap resumed>) = 0 [pid 498] <... exit_group resumed>) = ? [pid 501] <... futex resumed>) = ? [pid 504] rt_sigprocmask(SIG_SETMASK, [], [pid 503] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 504] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 504] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 504] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 506 attached [pid 506] set_robust_list(0x7fe6f87d19a0, 24 [pid 501] +++ exited with 0 +++ [pid 498] +++ exited with 0 +++ [pid 503] <... openat resumed>) = 7 [pid 503] ioctl(7, LOOP_SET_FD, 6 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=498, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 505] <... write resumed>) = 4 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 503] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] restart_syscall(<... resuming interrupted clone ...>executing program [pid 505] close(3 [pid 503] ioctl(7, LOOP_CLR_FD [pid 302] <... openat resumed>) = 3 [pid 505] <... close resumed>) = 0 [pid 503] <... ioctl resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 505] write(1, "executing program\n", 18 [pid 302] <... ioctl resumed>) = 0 [pid 505] <... write resumed>) = 18 [pid 302] close(3 [pid 505] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... close resumed>) = 0 [pid 505] <... futex resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 505] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 506] <... set_robust_list resumed>) = 0 [pid 506] rt_sigprocmask(SIG_SETMASK, [], [pid 505] <... rt_sigaction resumed>NULL, 8) = 0 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 507 [pid 505] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 505] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 505] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 503] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 505] rt_sigprocmask(SIG_BLOCK, ~[], [pid 503] close(7 [pid 505] <... rt_sigprocmask resumed>[], 8) = 0 [pid 505] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 503] <... close resumed>) = 0 [pid 503] close(6 [pid 505] <... clone3 resumed> => {parent_tid=[508]}, 88) = 508 [pid 506] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 506] memfd_create("syzkaller", 0 [pid 505] rt_sigprocmask(SIG_SETMASK, [], [pid 503] <... close resumed>) = 0 [pid 505] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 503] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 505] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 503] <... futex resumed>) = 1 [pid 505] <... futex resumed>) = 0 [pid 500] <... futex resumed>) = 0 [pid 505] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 503] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 500] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 503] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 500] <... futex resumed>) = 0 [pid 503] mknod(0x20000000, 000 [pid 500] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 503] <... mknod resumed>) = -1 EEXIST (File exists) [pid 503] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 503] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 500] <... futex resumed>) = 0 [pid 500] exit_group(0 [pid 503] <... futex resumed>) = ? [pid 500] <... exit_group resumed>) = ? [pid 503] +++ exited with 0 +++ [pid 506] <... memfd_create resumed>) = 3 [pid 506] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 500] +++ exited with 0 +++ [pid 506] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 506] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 506] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 506] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 506] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 508 attached [pid 508] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 508] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 508] memfd_create("syzkaller", 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=500, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 506] ioctl(4, LOOP_SET_FD, 3 [pid 306] <... restart_syscall resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 506] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 306] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 303] <... openat resumed>) = 3 [pid 306] <... ioctl resumed>) = 0 [pid 303] ioctl(3, LOOP_CLR_FD [pid 306] close(3 [pid 303] <... ioctl resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 303] close(3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] <... close resumed>) = 0 [pid 506] close(4) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 509 [pid 506] close(3) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 510 [pid 506] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 504] <... futex resumed>) = 0 [pid 504] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 504] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 506] <... futex resumed>) = 1 [pid 508] <... memfd_create resumed>) = 3 [pid 506] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 508] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 506] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 508] <... mmap resumed>) = 0x7fe6f03b1000 [pid 504] <... futex resumed>) = 0 [pid 504] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 504] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 506] <... futex resumed>) = 1 [pid 506] creat("./bus", 000 [pid 508] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 506] <... creat resumed>) = 3 [pid 506] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 504] <... futex resumed>) = 0 [pid 504] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 504] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 506] <... futex resumed>) = 1 [pid 506] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 506] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 504] <... futex resumed>) = 0 [pid 504] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 504] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 506] <... futex resumed>) = 1 [pid 506] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL) = -1 ENOSPC (No space left on device) [pid 506] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 504] <... futex resumed>) = 0 [pid 504] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 504] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 506] <... futex resumed>) = 1 [pid 506] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 506] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 504] <... futex resumed>) = 0 [pid 504] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 504] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 506] <... futex resumed>) = 1 [pid 506] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 506] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 504] <... futex resumed>) = 0 [pid 504] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 504] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 506] <... futex resumed>) = 1 [pid 506] memfd_create("syzkaller", 0) = 6 [pid 506] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 506] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072./strace-static-x86_64: Process 509 attached ./strace-static-x86_64: Process 507 attached [pid 509] set_robust_list(0x5555636e06a0, 24) = 0 [pid 507] set_robust_list(0x5555636e06a0, 24 [pid 509] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 507] <... set_robust_list resumed>) = 0 [pid 509] <... prctl resumed>) = 0 [pid 507] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 509] setpgid(0, 0 [pid 507] <... prctl resumed>) = 0 [pid 509] <... setpgid resumed>) = 0 [pid 507] setpgid(0, 0 [pid 509] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 507] <... setpgid resumed>) = 0 ./strace-static-x86_64: Process 510 attached [pid 510] set_robust_list(0x5555636e06a0, 24 [pid 509] <... openat resumed>) = 3 [pid 509] write(3, "1000", 4 [pid 507] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 509] <... write resumed>) = 4 executing program executing program [pid 510] <... set_robust_list resumed>) = 0 [pid 509] close(3 [pid 507] <... openat resumed>) = 3 [pid 509] <... close resumed>) = 0 [pid 507] write(3, "1000", 4 [pid 509] write(1, "executing program\n", 18 [pid 507] <... write resumed>) = 4 [pid 509] <... write resumed>) = 18 [pid 507] close(3 [pid 509] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 507] <... close resumed>) = 0 [pid 509] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 507] write(1, "executing program\n", 18 [pid 509] <... rt_sigaction resumed>NULL, 8) = 0 [pid 510] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 507] <... write resumed>) = 18 [pid 509] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 507] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 509] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 509] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 507] <... futex resumed>) = 0 [pid 509] <... mmap resumed>) = 0x7fe6f87b1000 [pid 507] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 509] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 507] <... rt_sigaction resumed>NULL, 8) = 0 [pid 509] <... mprotect resumed>) = 0 [pid 507] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 510] <... prctl resumed>) = 0 [pid 509] rt_sigprocmask(SIG_BLOCK, ~[], [pid 508] <... write resumed>) = 262144 [pid 507] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 506] <... write resumed>) = 131072 [pid 509] <... rt_sigprocmask resumed>[], 8) = 0 [pid 507] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 509] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 507] <... mmap resumed>) = 0x7fe6f87b1000 [pid 510] setpgid(0, 0 [pid 508] munmap(0x7fe6f03b1000, 138412032 [pid 507] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 506] munmap(0x7fe6f03b1000, 138412032 [pid 509] <... clone3 resumed> => {parent_tid=[511]}, 88) = 511 [pid 507] <... mprotect resumed>) = 0 [pid 509] rt_sigprocmask(SIG_SETMASK, [], [pid 510] <... setpgid resumed>) = 0 [pid 509] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 508] <... munmap resumed>) = 0 [pid 507] rt_sigprocmask(SIG_BLOCK, ~[], [pid 506] <... munmap resumed>) = 0 [pid 509] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 507] <... rt_sigprocmask resumed>[], 8) = 0 [pid 509] <... futex resumed>) = 0 [pid 507] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 509] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 510] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 508] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 506] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 507] <... clone3 resumed> => {parent_tid=[512]}, 88) = 512 [pid 510] <... openat resumed>) = 3 [pid 508] <... openat resumed>) = 4 [pid 507] rt_sigprocmask(SIG_SETMASK, [], [pid 506] <... openat resumed>) = 7 [pid 507] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 510] write(3, "1000", 4 [pid 508] ioctl(4, LOOP_SET_FD, 3 [pid 507] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 506] ioctl(7, LOOP_SET_FD, 6 [pid 507] <... futex resumed>) = 0 [pid 510] <... write resumed>) = 4 [pid 508] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 507] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 506] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 510] close(3 [pid 508] ioctl(4, LOOP_CLR_FD [pid 506] ioctl(7, LOOP_CLR_FD [pid 510] <... close resumed>) = 0 [pid 508] <... ioctl resumed>) = 0 [pid 506] <... ioctl resumed>) = 0 executing program [pid 510] write(1, "executing program\n", 18) = 18 [pid 510] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 510] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 510] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 510] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 508] ioctl(4, LOOP_SET_FD, 3 [pid 506] ioctl(7, LOOP_SET_FD, 6 [pid 510] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 508] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 506] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 510] <... mprotect resumed>) = 0 [pid 510] rt_sigprocmask(SIG_BLOCK, ~[], [pid 508] close(4 [pid 506] close(7 [pid 510] <... rt_sigprocmask resumed>[], 8) = 0 [pid 510] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 508] <... close resumed>) = 0 [pid 506] <... close resumed>) = 0 [pid 508] close(3 [pid 510] <... clone3 resumed> => {parent_tid=[513]}, 88) = 513 [pid 508] <... close resumed>) = 0 [pid 506] close(6 [pid 510] rt_sigprocmask(SIG_SETMASK, [], [pid 508] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 506] <... close resumed>) = 0 [pid 510] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 510] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 508] <... futex resumed>) = 1 [pid 506] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 505] <... futex resumed>) = 0 [pid 510] <... futex resumed>) = 0 [pid 508] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 506] <... futex resumed>) = 1 [pid 505] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 504] <... futex resumed>) = 0 [pid 510] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 508] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 506] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 505] <... futex resumed>) = 0 [pid 504] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 512 attached [pid 508] chdir("./file0" [pid 506] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 505] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 504] <... futex resumed>) = 0 [pid 512] set_robust_list(0x7fe6f87d19a0, 24 [pid 508] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 506] mknod(0x20000000, 000 [pid 504] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 512] <... set_robust_list resumed>) = 0 [pid 508] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 506] <... mknod resumed>) = -1 EEXIST (File exists) [pid 512] rt_sigprocmask(SIG_SETMASK, [], [pid 508] <... futex resumed>) = 1 [pid 506] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 505] <... futex resumed>) = 0 ./strace-static-x86_64: Process 511 attached [pid 512] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 508] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 506] <... futex resumed>) = 1 [pid 505] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 504] <... futex resumed>) = 0 [pid 512] memfd_create("syzkaller", 0 [pid 508] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 506] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 505] <... futex resumed>) = 0 [pid 511] set_robust_list(0x7fe6f87d19a0, 24 [pid 504] exit_group(0 [pid 512] <... memfd_create resumed>) = 3 [pid 508] creat("./bus", 000 [pid 506] <... futex resumed>) = ? [pid 511] <... set_robust_list resumed>) = 0 [pid 505] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 504] <... exit_group resumed>) = ? [pid 512] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 511] rt_sigprocmask(SIG_SETMASK, [], [pid 508] <... creat resumed>) = 3 [pid 506] +++ exited with 0 +++ [pid 504] +++ exited with 0 +++ [pid 512] <... mmap resumed>) = 0x7fe6f03b1000 [pid 508] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 512] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 511] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 508] <... futex resumed>) = 1 [pid 505] <... futex resumed>) = 0 [pid 511] memfd_create("syzkaller", 0 [pid 508] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 505] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=504, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 511] <... memfd_create resumed>) = 3 [pid 508] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ./strace-static-x86_64: Process 513 attached [pid 512] <... write resumed>) = 262144 [pid 511] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 508] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 505] <... futex resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 513] set_robust_list(0x7fe6f87d19a0, 24 [pid 511] <... mmap resumed>) = 0x7fe6f03b1000 [pid 508] <... openat resumed>) = 4 [pid 505] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 513] <... set_robust_list resumed>) = 0 [pid 508] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 513] rt_sigprocmask(SIG_SETMASK, [], [pid 508] <... futex resumed>) = 0 [pid 513] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 508] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 513] memfd_create("syzkaller", 0) = 3 [pid 513] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 513] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 511] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 505] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 512] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 512] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 512] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 512] ioctl(4, LOOP_CLR_FD) = 0 [pid 513] <... write resumed>) = 262144 [pid 511] <... write resumed>) = 262144 [pid 505] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... restart_syscall resumed>) = 0 [pid 511] munmap(0x7fe6f03b1000, 138412032 [pid 508] <... futex resumed>) = 0 [pid 505] <... futex resumed>) = 1 [pid 508] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 511] <... munmap resumed>) = 0 [pid 508] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 505] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 512] ioctl(4, LOOP_SET_FD, 3 [pid 511] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 508] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 505] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 512] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 511] <... openat resumed>) = 4 [pid 508] <... futex resumed>) = 0 [pid 505] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 512] close(4 [pid 511] ioctl(4, LOOP_SET_FD, 3 [pid 508] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 505] <... futex resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 512] <... close resumed>) = 0 [pid 511] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 508] <... open resumed>) = 5 [pid 505] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] ioctl(3, LOOP_CLR_FD [pid 512] close(3 [pid 511] ioctl(4, LOOP_CLR_FD [pid 508] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 505] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 305] <... ioctl resumed>) = 0 [pid 512] <... close resumed>) = 0 [pid 511] <... ioctl resumed>) = 0 [pid 508] <... futex resumed>) = 0 [pid 512] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 508] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 512] <... futex resumed>) = 1 [pid 512] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 513] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 513] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 513] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 513] ioctl(4, LOOP_CLR_FD) = 0 [pid 505] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] close(3 [pid 508] <... futex resumed>) = 0 [pid 507] <... futex resumed>) = 0 [pid 505] <... futex resumed>) = 1 [pid 513] ioctl(4, LOOP_SET_FD, 3 [pid 508] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 507] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 505] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... close resumed>) = 0 [pid 513] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 508] <... mmap resumed>) = 0x20000000 [pid 507] <... futex resumed>) = 1 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 513] close(4 [pid 512] <... futex resumed>) = 0 [pid 508] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 507] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 513] <... close resumed>) = 0 [pid 512] chdir("./file0" [pid 508] <... futex resumed>) = 1 [pid 513] close(3 [pid 512] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 508] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 505] <... futex resumed>) = 0 [pid 513] <... close resumed>) = 0 [pid 512] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 505] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 511] ioctl(4, LOOP_SET_FD, 3 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 514 [pid 513] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 512] <... futex resumed>) = 1 [pid 511] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 508] <... futex resumed>) = 0 [pid 507] <... futex resumed>) = 0 [pid 505] <... futex resumed>) = 1 [pid 513] <... futex resumed>) = 1 [pid 512] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 511] close(4 [pid 510] <... futex resumed>) = 0 [pid 508] memfd_create("syzkaller", 0 [pid 507] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 505] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 513] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 512] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 511] <... close resumed>) = 0 [pid 510] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 508] <... memfd_create resumed>) = 6 [pid 507] <... futex resumed>) = 0 [pid 513] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 512] creat("./bus", 000 [pid 511] close(3 [pid 510] <... futex resumed>) = 0 [pid 508] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 507] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 513] chdir("./file0" [pid 512] <... creat resumed>) = 3 [pid 510] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 508] <... mmap resumed>) = 0x7fe6f03b1000 [pid 513] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 512] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 511] <... close resumed>) = 0 [pid 508] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 513] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 512] <... futex resumed>) = 1 [pid 511] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 508] <... write resumed>) = 131072 [pid 507] <... futex resumed>) = 0 [pid 513] <... futex resumed>) = 1 [pid 512] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 510] <... futex resumed>) = 0 [pid 508] munmap(0x7fe6f03b1000, 138412032 [pid 507] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 513] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 512] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 511] <... futex resumed>) = 1 [pid 510] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 509] <... futex resumed>) = 0 [pid 508] <... munmap resumed>) = 0 [pid 507] <... futex resumed>) = 0 [pid 513] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 512] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 511] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 510] <... futex resumed>) = 0 [pid 509] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 508] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 507] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 513] creat("./bus", 000 [pid 512] <... openat resumed>) = 4 [pid 511] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 510] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 509] <... futex resumed>) = 0 [pid 508] <... openat resumed>) = 7 ./strace-static-x86_64: Process 514 attached [pid 513] <... creat resumed>) = 3 [pid 512] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 511] chdir("./file0" [pid 509] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 508] ioctl(7, LOOP_SET_FD, 6 [pid 514] set_robust_list(0x5555636e06a0, 24 [pid 513] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 512] <... futex resumed>) = 1 [pid 511] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 508] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 507] <... futex resumed>) = 0 [pid 514] <... set_robust_list resumed>) = 0 [pid 513] <... futex resumed>) = 1 [pid 512] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 511] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 510] <... futex resumed>) = 0 [pid 508] ioctl(7, LOOP_CLR_FD [pid 507] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 514] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 513] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 512] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 511] <... futex resumed>) = 1 [pid 510] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 509] <... futex resumed>) = 0 [pid 508] <... ioctl resumed>) = 0 [pid 507] <... futex resumed>) = 0 [pid 514] <... prctl resumed>) = 0 [pid 513] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 512] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 511] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 510] <... futex resumed>) = 0 [pid 509] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 507] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 514] setpgid(0, 0 [pid 513] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 512] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 511] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 510] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 509] <... futex resumed>) = 0 [pid 514] <... setpgid resumed>) = 0 [pid 513] <... openat resumed>) = 4 [pid 512] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 511] creat("./bus", 000 [pid 509] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 513] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 512] <... futex resumed>) = 1 [pid 507] <... futex resumed>) = 0 [pid 514] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 513] <... futex resumed>) = 1 [pid 512] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 511] <... creat resumed>) = 3 [pid 510] <... futex resumed>) = 0 [pid 507] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 514] <... openat resumed>) = 3 [pid 513] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 512] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 511] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 510] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 508] ioctl(7, LOOP_SET_FD, 6 [pid 507] <... futex resumed>) = 0 [pid 514] write(3, "1000", 4 [pid 513] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 512] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 511] <... futex resumed>) = 1 [pid 510] <... futex resumed>) = 0 [pid 509] <... futex resumed>) = 0 [pid 508] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 507] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 514] <... write resumed>) = 4 [pid 513] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 512] <... open resumed>) = 5 [pid 511] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 510] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 509] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 508] close(7 [pid 512] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 508] <... close resumed>) = 0 [pid 512] <... futex resumed>) = 1 [pid 508] close(6 [pid 507] <... futex resumed>) = 0 [pid 512] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 508] <... close resumed>) = 0 [pid 507] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 512] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 508] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 507] <... futex resumed>) = 0 [pid 512] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 508] <... futex resumed>) = 1 [pid 507] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 512] <... mmap resumed>) = 0x20000000 [pid 508] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 512] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 507] <... futex resumed>) = 0 [pid 512] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 507] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 512] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 507] <... futex resumed>) = 0 [pid 512] memfd_create("syzkaller", 0 [pid 507] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 512] <... memfd_create resumed>) = 6 [pid 512] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 512] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 514] close(3 [pid 513] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 512] <... write resumed>) = 131072 [pid 511] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 509] <... futex resumed>) = 0 [pid 505] <... futex resumed>) = 0 [pid 513] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 512] munmap(0x7fe6f03b1000, 138412032 [pid 511] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 509] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 505] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 514] <... close resumed>) = 0 [pid 513] <... futex resumed>) = 1 [pid 512] <... munmap resumed>) = 0 [pid 510] <... futex resumed>) = 0 [pid 514] write(1, "executing program\n", 18 [pid 513] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULLexecuting program [pid 512] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 511] <... openat resumed>) = 4 [pid 510] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 508] <... futex resumed>) = 0 [pid 505] <... futex resumed>) = 1 [pid 514] <... write resumed>) = 18 [pid 513] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 512] <... openat resumed>) = 7 [pid 511] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 510] <... futex resumed>) = 0 [pid 508] mknod(0x20000000, 000 [pid 505] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 514] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 513] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 512] ioctl(7, LOOP_SET_FD, 6 [pid 511] <... futex resumed>) = 1 [pid 510] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 509] <... futex resumed>) = 0 [pid 508] <... mknod resumed>) = -1 EEXIST (File exists) [pid 514] <... futex resumed>) = 0 [pid 513] <... open resumed>) = 5 [pid 512] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 511] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 509] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 508] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 514] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 513] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 512] ioctl(7, LOOP_CLR_FD [pid 511] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 509] <... futex resumed>) = 0 [pid 508] <... futex resumed>) = 1 [pid 505] <... futex resumed>) = 0 [pid 514] <... rt_sigaction resumed>NULL, 8) = 0 [pid 513] <... futex resumed>) = 1 [pid 512] <... ioctl resumed>) = 0 [pid 511] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 510] <... futex resumed>) = 0 [pid 509] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 508] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 505] exit_group(0 [pid 514] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 513] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 511] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 510] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 508] <... futex resumed>) = ? [pid 505] <... exit_group resumed>) = ? [pid 514] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 513] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 511] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 510] <... futex resumed>) = 0 [pid 508] +++ exited with 0 +++ [pid 513] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 510] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 513] <... mmap resumed>) = 0x20000000 [pid 514] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 513] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 511] <... futex resumed>) = 1 [pid 509] <... futex resumed>) = 0 [pid 505] +++ exited with 0 +++ [pid 514] <... mmap resumed>) = 0x7fe6f87b1000 [pid 513] <... futex resumed>) = 1 [pid 511] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 510] <... futex resumed>) = 0 [pid 509] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=505, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 514] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 513] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 512] ioctl(7, LOOP_SET_FD, 6 [pid 511] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 510] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 509] <... futex resumed>) = 0 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 514] <... mprotect resumed>) = 0 [pid 513] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 512] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 511] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 510] <... futex resumed>) = 0 [pid 514] rt_sigprocmask(SIG_BLOCK, ~[], [pid 513] memfd_create("syzkaller", 0 [pid 512] close(7 [pid 511] <... open resumed>) = 5 [pid 510] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 509] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 514] <... rt_sigprocmask resumed>[], 8) = 0 [pid 513] <... memfd_create resumed>) = 6 [pid 512] <... close resumed>) = 0 [pid 511] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 509] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 304] <... restart_syscall resumed>) = 0 [pid 514] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 513] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 512] close(6 [pid 511] <... futex resumed>) = 0 [pid 509] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 513] <... mmap resumed>) = 0x7fe6f03b1000 [pid 512] <... close resumed>) = 0 [pid 511] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 514] <... clone3 resumed> => {parent_tid=[515]}, 88) = 515 [pid 513] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 512] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 509] <... futex resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 514] rt_sigprocmask(SIG_SETMASK, [], [pid 513] <... write resumed>) = 131072 [pid 512] <... futex resumed>) = 1 [pid 511] <... mmap resumed>) = 0x20000000 [pid 509] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 507] <... futex resumed>) = 0 [pid 304] <... openat resumed>) = 3 [pid 514] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 513] munmap(0x7fe6f03b1000, 138412032 [pid 512] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 511] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 509] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 507] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] ioctl(3, LOOP_CLR_FD [pid 514] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 513] <... munmap resumed>) = 0 [pid 512] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 511] <... futex resumed>) = 0 [pid 509] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 507] <... futex resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 514] <... futex resumed>) = 0 [pid 513] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 512] mknod(0x20000000, 000 [pid 511] memfd_create("syzkaller", 0 [pid 509] <... futex resumed>) = 0 [pid 507] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] close(3 [pid 514] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 513] <... openat resumed>) = 7 [pid 512] <... mknod resumed>) = -1 EEXIST (File exists) [pid 511] <... memfd_create resumed>) = 6 [pid 509] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 304] <... close resumed>) = 0 [pid 513] ioctl(7, LOOP_SET_FD, 6 [pid 512] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 511] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 513] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 512] <... futex resumed>) = 1 [pid 511] <... mmap resumed>) = 0x7fe6f03b1000 [pid 507] <... futex resumed>) = 0 [pid 513] ioctl(7, LOOP_CLR_FD [pid 512] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 507] exit_group(0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 516 [pid 513] <... ioctl resumed>) = 0 [pid 512] <... futex resumed>) = ? [pid 507] <... exit_group resumed>) = ? [pid 512] +++ exited with 0 +++ [pid 511] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 507] +++ exited with 0 +++ ./strace-static-x86_64: Process 515 attached [pid 515] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 511] <... write resumed>) = 131072 [pid 511] munmap(0x7fe6f03b1000, 138412032 [pid 513] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 513] close(7 [pid 511] <... munmap resumed>) = 0 [pid 513] <... close resumed>) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=507, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 511] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 513] close(6 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 513] <... close resumed>) = 0 [pid 511] <... openat resumed>) = 7 [pid 513] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... openat resumed>) = 3 [pid 513] <... futex resumed>) = 1 [pid 511] ioctl(7, LOOP_SET_FD, 6 [pid 510] <... futex resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 513] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 511] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 510] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... ioctl resumed>) = 0 [pid 513] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 511] ioctl(7, LOOP_CLR_FD [pid 510] <... futex resumed>) = 0 [pid 302] close(3 [pid 513] mknod(0x20000000, 000 [pid 511] <... ioctl resumed>) = 0 [pid 510] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 513] <... mknod resumed>) = -1 EEXIST (File exists) [pid 302] <... close resumed>) = 0 [pid 513] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 513] <... futex resumed>) = 1 [pid 510] <... futex resumed>) = 0 [pid 513] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 510] exit_group(0 [pid 513] <... futex resumed>) = ? [pid 510] <... exit_group resumed>) = ? [pid 513] +++ exited with 0 +++ [pid 510] +++ exited with 0 +++ [pid 511] ioctl(7, LOOP_SET_FD, 6 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 517 [pid 511] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=510, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 511] close(7 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 511] <... close resumed>) = 0 [pid 511] close(6 [pid 515] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 515] memfd_create("syzkaller", 0 [pid 511] <... close resumed>) = 0 [pid 511] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 509] <... futex resumed>) = 0 [pid 511] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 509] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 511] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 509] <... futex resumed>) = 0 [pid 511] mknod(0x20000000, 000 [pid 509] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 511] <... mknod resumed>) = -1 EEXIST (File exists) [pid 515] <... memfd_create resumed>) = 3 [pid 511] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 515] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 511] <... futex resumed>) = 1 [pid 509] <... futex resumed>) = 0 [pid 511] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 515] <... mmap resumed>) = 0x7fe6f03b1000 [pid 509] exit_group(0 [pid 515] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 511] <... futex resumed>) = ? [pid 509] <... exit_group resumed>) = ? [pid 511] +++ exited with 0 +++ [pid 515] <... write resumed>) = 262144 [pid 509] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=509, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 515] munmap(0x7fe6f03b1000, 138412032) = 0 ./strace-static-x86_64: Process 517 attached ./strace-static-x86_64: Process 516 attached [pid 516] set_robust_list(0x5555636e06a0, 24 [pid 517] set_robust_list(0x5555636e06a0, 24) = 0 [pid 517] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 515] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 515] ioctl(4, LOOP_SET_FD, 3 [pid 516] <... set_robust_list resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 515] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 516] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 306] <... openat resumed>) = 3 [pid 303] <... openat resumed>) = 3 [pid 517] <... prctl resumed>) = 0 [pid 516] <... prctl resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 303] ioctl(3, LOOP_CLR_FD [pid 306] <... ioctl resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 516] setpgid(0, 0 [pid 306] close(3 [pid 303] close(3 [pid 516] <... setpgid resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 515] ioctl(4, LOOP_CLR_FD [pid 517] setpgid(0, 0 [pid 515] <... ioctl resumed>) = 0 [pid 517] <... setpgid resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 518 [pid 517] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 516] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 519 [pid 516] <... openat resumed>) = 3 [pid 517] <... openat resumed>) = 3 [pid 516] write(3, "1000", 4executing program [pid 517] write(3, "1000", 4) = 4 [pid 517] close(3) = 0 [pid 517] write(1, "executing program\n", 18) = 18 [pid 517] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 515] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 515] close(4) = 0 [pid 515] close(3 [pid 516] <... write resumed>) = 4 [pid 515] <... close resumed>) = 0 [pid 516] close(3 [pid 517] <... futex resumed>) = 0 [pid 516] <... close resumed>) = 0 [pid 517] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 516] write(1, "executing program\n", 18 [pid 517] <... rt_sigaction resumed>NULL, 8) = 0 [pid 517] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 517] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 executing program [pid 517] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 517] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 517] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 515] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 518 attached [pid 516] <... write resumed>) = 18 [pid 515] <... futex resumed>) = 1 [pid 514] <... futex resumed>) = 0 [pid 516] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 514] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 518] set_robust_list(0x5555636e06a0, 24 [pid 516] <... futex resumed>) = 0 [pid 514] <... futex resumed>) = 0 [pid 518] <... set_robust_list resumed>) = 0 [pid 516] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 514] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 516] <... rt_sigaction resumed>NULL, 8) = 0 [pid 518] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 517] <... clone3 resumed> => {parent_tid=[520]}, 88) = 520 [pid 516] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 515] chdir("./file0" [pid 518] <... prctl resumed>) = 0 [pid 516] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 518] setpgid(0, 0 [pid 517] rt_sigprocmask(SIG_SETMASK, [], [pid 516] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 515] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 516] <... mmap resumed>) = 0x7fe6f87b1000 [pid 518] <... setpgid resumed>) = 0 [pid 517] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 516] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 515] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 516] <... mprotect resumed>) = 0 [pid 517] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 516] rt_sigprocmask(SIG_BLOCK, ~[], [pid 515] <... futex resumed>) = 1 [pid 514] <... futex resumed>) = 0 [pid 518] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 516] <... rt_sigprocmask resumed>[], 8) = 0 [pid 514] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 518] <... openat resumed>) = 3 [pid 517] <... futex resumed>) = 0 [pid 516] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 515] creat("./bus", 000 [pid 514] <... futex resumed>) = 0 ./strace-static-x86_64: Process 519 attached [pid 518] write(3, "1000", 4 [pid 517] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 515] <... creat resumed>) = 3 [pid 514] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 519] set_robust_list(0x5555636e06a0, 24 [pid 518] <... write resumed>) = 4 [pid 516] <... clone3 resumed> => {parent_tid=[521]}, 88) = 521 [pid 515] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 518] close(3 [pid 516] rt_sigprocmask(SIG_SETMASK, [], [pid 519] <... set_robust_list resumed>) = 0 [pid 518] <... close resumed>) = 0 [pid 516] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 515] <... futex resumed>) = 1 [pid 514] <... futex resumed>) = 0 [pid 518] write(1, "executing program\n", 18 [pid 516] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 514] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 519] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 518] <... write resumed>) = 18 [pid 516] <... futex resumed>) = 0 [pid 515] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 514] <... futex resumed>) = 0 [pid 518] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 516] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 514] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 518] <... futex resumed>) = 0 [pid 519] <... prctl resumed>) = 0 [pid 515] <... openat resumed>) = 4 [pid 519] setpgid(0, 0 [pid 515] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 519] <... setpgid resumed>) = 0 [pid 518] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 515] <... futex resumed>) = 1 [pid 514] <... futex resumed>) = 0 [pid 519] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 518] <... rt_sigaction resumed>NULL, 8) = 0 [pid 515] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 514] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 519] <... openat resumed>) = 3 [pid 518] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 515] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 514] <... futex resumed>) = 0 ./strace-static-x86_64: Process 520 attached [pid 519] write(3, "1000", 4 [pid 518] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 515] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 514] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 520] set_robust_list(0x7fe6f87d19a0, 24 [pid 519] <... write resumed>) = 4 [pid 518] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 515] <... futex resumed>) = 0 [pid 514] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ./strace-static-x86_64: Process 521 attached [pid 520] <... set_robust_list resumed>) = 0 [pid 519] close(3 [pid 518] <... mmap resumed>) = 0x7fe6f87b1000 [pid 515] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 514] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 521] set_robust_list(0x7fe6f87d19a0, 24 [pid 520] rt_sigprocmask(SIG_SETMASK, [], [pid 519] <... close resumed>) = 0 [pid 518] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 515] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) executing program [pid 514] <... futex resumed>) = 0 [pid 521] <... set_robust_list resumed>) = 0 [pid 520] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 519] write(1, "executing program\n", 18 [pid 518] <... mprotect resumed>) = 0 [pid 515] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 514] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 521] rt_sigprocmask(SIG_SETMASK, [], [pid 520] memfd_create("syzkaller", 0 [pid 519] <... write resumed>) = 18 [pid 518] rt_sigprocmask(SIG_BLOCK, ~[], [pid 515] <... open resumed>) = 5 [pid 521] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 520] <... memfd_create resumed>) = 3 [pid 519] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 518] <... rt_sigprocmask resumed>[], 8) = 0 [pid 515] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 521] memfd_create("syzkaller", 0 [pid 520] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 519] <... futex resumed>) = 0 [pid 518] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 515] <... futex resumed>) = 1 [pid 514] <... futex resumed>) = 0 [pid 521] <... memfd_create resumed>) = 3 [pid 520] <... mmap resumed>) = 0x7fe6f03b1000 [pid 519] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 515] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 521] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 519] <... rt_sigaction resumed>NULL, 8) = 0 [pid 515] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 514] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 519] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 515] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 519] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 515] <... mmap resumed>) = 0x20000000 [pid 520] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 519] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 515] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 519] <... mmap resumed>) = 0x7fe6f87b1000 [pid 515] <... futex resumed>) = 0 [pid 514] <... futex resumed>) = 0 [pid 519] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 518] <... clone3 resumed> => {parent_tid=[522]}, 88) = 522 [pid 515] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 514] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 520] <... write resumed>) = 262144 [pid 519] <... mprotect resumed>) = 0 [pid 518] rt_sigprocmask(SIG_SETMASK, [], [pid 514] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 519] rt_sigprocmask(SIG_BLOCK, ~[], [pid 518] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 514] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 521] <... mmap resumed>) = 0x7fe6f03b1000 [pid 519] <... rt_sigprocmask resumed>[], 8) = 0 [pid 518] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 515] <... futex resumed>) = 0 [pid 514] <... futex resumed>) = 1 [pid 520] munmap(0x7fe6f03b1000, 138412032 [pid 519] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 518] <... futex resumed>) = 0 [pid 515] memfd_create("syzkaller", 0 [pid 514] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 520] <... munmap resumed>) = 0 [pid 518] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 515] <... memfd_create resumed>) = 6 [pid 520] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 519] <... clone3 resumed> => {parent_tid=[523]}, 88) = 523 [pid 515] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 521] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 520] <... openat resumed>) = 4 [pid 519] rt_sigprocmask(SIG_SETMASK, [], [pid 515] <... mmap resumed>) = 0x7fe6f03b1000 [pid 521] <... write resumed>) = 262144 [pid 520] ioctl(4, LOOP_SET_FD, 3 [pid 519] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 515] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 521] munmap(0x7fe6f03b1000, 138412032 [pid 520] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 519] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 515] <... write resumed>) = 131072 [pid 520] ioctl(4, LOOP_CLR_FD [pid 519] <... futex resumed>) = 0 [pid 515] munmap(0x7fe6f03b1000, 138412032./strace-static-x86_64: Process 522 attached [pid 521] <... munmap resumed>) = 0 [pid 520] <... ioctl resumed>) = 0 [pid 519] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 515] <... munmap resumed>) = 0 [pid 521] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 522] set_robust_list(0x7fe6f87d19a0, 24 [pid 515] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 7 [pid 515] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 515] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 523 attached [pid 523] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 523] rt_sigprocmask(SIG_SETMASK, [], [pid 520] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 520] close(4) = 0 [pid 520] close(3) = 0 [pid 520] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 515] ioctl(7, LOOP_SET_FD, 6 [pid 520] <... futex resumed>) = 1 [pid 517] <... futex resumed>) = 0 [pid 515] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 520] chdir("./file0" [pid 517] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 515] close(7 [pid 520] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 517] <... futex resumed>) = 0 [pid 515] <... close resumed>) = 0 [pid 520] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 517] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 521] <... openat resumed>) = 4 [pid 515] close(6 [pid 522] <... set_robust_list resumed>) = 0 [pid 520] <... futex resumed>) = 0 [pid 517] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 515] <... close resumed>) = 0 [pid 520] creat("./bus", 000 [pid 517] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 515] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 520] <... creat resumed>) = 3 [pid 517] <... futex resumed>) = 0 [pid 515] <... futex resumed>) = 1 [pid 514] <... futex resumed>) = 0 [pid 520] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 517] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 515] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 514] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 520] <... futex resumed>) = 0 [pid 517] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 515] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 514] <... futex resumed>) = 0 [pid 523] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 520] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 517] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 515] mknod(0x20000000, 000 [pid 514] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 523] memfd_create("syzkaller", 0 [pid 520] <... openat resumed>) = 4 [pid 517] <... futex resumed>) = 0 [pid 515] <... mknod resumed>) = -1 EEXIST (File exists) [pid 523] <... memfd_create resumed>) = 3 [pid 520] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 517] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 515] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 523] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 520] <... futex resumed>) = 0 [pid 517] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 515] <... futex resumed>) = 1 [pid 514] <... futex resumed>) = 0 [pid 523] <... mmap resumed>) = 0x7fe6f03b1000 [pid 520] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 517] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 515] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 514] exit_group(0 [pid 523] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 522] rt_sigprocmask(SIG_SETMASK, [], [pid 521] ioctl(4, LOOP_SET_FD, 3 [pid 520] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 517] <... futex resumed>) = 0 [pid 515] <... futex resumed>) = ? [pid 514] <... exit_group resumed>) = ? [pid 522] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 521] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 520] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 517] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 515] +++ exited with 0 +++ [pid 514] +++ exited with 0 +++ [pid 522] memfd_create("syzkaller", 0 [pid 521] ioctl(4, LOOP_CLR_FD [pid 520] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 522] <... memfd_create resumed>) = 3 [pid 521] <... ioctl resumed>) = 0 [pid 520] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=514, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 522] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 520] <... futex resumed>) = 1 [pid 517] <... futex resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 523] <... write resumed>) = 262144 [pid 522] <... mmap resumed>) = 0x7fe6f03b1000 [pid 520] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 517] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... restart_syscall resumed>) = 0 [pid 520] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 517] <... futex resumed>) = 0 [pid 520] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 517] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 520] <... open resumed>) = 5 [pid 520] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 517] <... futex resumed>) = 0 [pid 520] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 517] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 520] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 517] <... futex resumed>) = 0 [pid 520] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 517] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 522] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 520] <... mmap resumed>) = 0x20000000 [pid 523] munmap(0x7fe6f03b1000, 138412032 [pid 520] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 523] <... munmap resumed>) = 0 [pid 520] <... futex resumed>) = 1 [pid 517] <... futex resumed>) = 0 [pid 523] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 520] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 517] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 523] <... openat resumed>) = 4 [pid 520] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 517] <... futex resumed>) = 0 [pid 523] ioctl(4, LOOP_SET_FD, 3 [pid 522] <... write resumed>) = 262144 [pid 521] ioctl(4, LOOP_SET_FD, 3 [pid 520] memfd_create("syzkaller", 0 [pid 517] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 523] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 522] munmap(0x7fe6f03b1000, 138412032 [pid 521] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 520] <... memfd_create resumed>) = 6 [pid 523] ioctl(4, LOOP_CLR_FD [pid 520] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 523] <... ioctl resumed>) = 0 [pid 520] <... mmap resumed>) = 0x7fe6f03b1000 [pid 520] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 520] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 520] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 520] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 520] ioctl(7, LOOP_CLR_FD) = 0 [pid 523] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 523] close(4) = 0 [pid 523] close(3) = 0 [pid 522] <... munmap resumed>) = 0 [pid 521] close(4 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 523] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 522] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 521] <... close resumed>) = 0 [pid 520] ioctl(7, LOOP_SET_FD, 6 [pid 523] <... futex resumed>) = 1 [pid 522] <... openat resumed>) = 4 [pid 521] close(3 [pid 520] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 519] <... futex resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 523] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 522] ioctl(4, LOOP_SET_FD, 3 [pid 520] close(7 [pid 519] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 523] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 520] <... close resumed>) = 0 [pid 519] <... futex resumed>) = 0 [pid 523] chdir("./file0" [pid 522] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 521] <... close resumed>) = 0 [pid 520] close(6 [pid 519] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] ioctl(3, LOOP_CLR_FD [pid 523] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 522] ioctl(4, LOOP_CLR_FD [pid 521] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 520] <... close resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 523] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 522] <... ioctl resumed>) = 0 [pid 521] <... futex resumed>) = 1 [pid 520] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 516] <... futex resumed>) = 0 [pid 305] close(3 [pid 523] <... futex resumed>) = 1 [pid 521] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 520] <... futex resumed>) = 1 [pid 519] <... futex resumed>) = 0 [pid 517] <... futex resumed>) = 0 [pid 516] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... close resumed>) = 0 [pid 523] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 521] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 520] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 519] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 517] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 516] <... futex resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 523] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 521] chdir("./file0" [pid 520] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 519] <... futex resumed>) = 0 [pid 517] <... futex resumed>) = 0 [pid 516] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 523] creat("./bus", 000 [pid 520] mknod(0x20000000, 000 [pid 519] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 517] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 521] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 523] <... creat resumed>) = 3 [pid 522] ioctl(4, LOOP_SET_FD, 3 [pid 521] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 520] <... mknod resumed>) = -1 EEXIST (File exists) [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 524 [pid 523] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 522] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 521] <... futex resumed>) = 1 [pid 520] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 516] <... futex resumed>) = 0 [pid 523] <... futex resumed>) = 1 [pid 522] close(4 [pid 521] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 520] <... futex resumed>) = 1 [pid 519] <... futex resumed>) = 0 [pid 517] <... futex resumed>) = 0 [pid 516] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 523] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 522] <... close resumed>) = 0 [pid 521] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 520] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 519] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 517] exit_group(0 [pid 516] <... futex resumed>) = 0 [pid 523] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 522] close(3 [pid 521] creat("./bus", 000 [pid 520] <... futex resumed>) = ? [pid 519] <... futex resumed>) = 0 [pid 517] <... exit_group resumed>) = ? [pid 523] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 522] <... close resumed>) = 0 [pid 521] <... creat resumed>) = 3 [pid 520] +++ exited with 0 +++ [pid 519] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 517] +++ exited with 0 +++ [pid 516] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 523] <... openat resumed>) = 4 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=517, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 523] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 523] <... futex resumed>) = 1 [pid 519] <... futex resumed>) = 0 [pid 523] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 519] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 523] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 519] <... futex resumed>) = 0 [pid 523] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 519] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 524 attached [pid 524] set_robust_list(0x5555636e06a0, 24) = 0 [pid 524] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 524] setpgid(0, 0) = 0 [pid 524] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 524] write(3, "1000", 4) = 4 [pid 524] close(3 [pid 302] <... restart_syscall resumed>) = 0 executing program [pid 524] <... close resumed>) = 0 [pid 524] write(1, "executing program\n", 18) = 18 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 524] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... openat resumed>) = 3 [pid 524] <... futex resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 524] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 302] <... ioctl resumed>) = 0 [pid 524] <... rt_sigaction resumed>NULL, 8) = 0 [pid 302] close(3 [pid 524] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 302] <... close resumed>) = 0 [pid 524] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 522] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 523] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 521] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 524] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 523] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 522] <... futex resumed>) = 1 [pid 521] <... futex resumed>) = 1 [pid 518] <... futex resumed>) = 0 [pid 516] <... futex resumed>) = 0 [pid 524] <... mmap resumed>) = 0x7fe6f87b1000 [pid 523] <... futex resumed>) = 1 [pid 522] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 521] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 519] <... futex resumed>) = 0 [pid 518] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 516] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 525 [pid 524] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 523] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 522] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 521] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 519] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 518] <... futex resumed>) = 0 [pid 516] <... futex resumed>) = 0 [pid 524] <... mprotect resumed>) = 0 [pid 523] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 522] chdir("./file0" [pid 521] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 519] <... futex resumed>) = 0 [pid 518] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 516] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 524] rt_sigprocmask(SIG_BLOCK, ~[], [pid 523] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 522] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 519] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 524] <... rt_sigprocmask resumed>[], 8) = 0 [pid 523] <... open resumed>) = 5 [pid 522] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 521] <... openat resumed>) = 4 [pid 524] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 523] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 522] <... futex resumed>) = 1 [pid 521] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 518] <... futex resumed>) = 0 [pid 523] <... futex resumed>) = 1 [pid 522] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 521] <... futex resumed>) = 1 [pid 519] <... futex resumed>) = 0 [pid 518] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 516] <... futex resumed>) = 0 [pid 524] <... clone3 resumed> => {parent_tid=[526]}, 88) = 526 [pid 523] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 522] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 521] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 519] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 518] <... futex resumed>) = 0 [pid 516] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 524] rt_sigprocmask(SIG_SETMASK, [], [pid 523] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 522] creat("./bus", 000 [pid 521] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 519] <... futex resumed>) = 0 [pid 518] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 516] <... futex resumed>) = 0 [pid 524] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 523] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 522] <... creat resumed>) = 3 [pid 521] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 519] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 516] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 525 attached [pid 524] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 523] <... mmap resumed>) = 0x20000000 [pid 522] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 521] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 525] set_robust_list(0x5555636e06a0, 24 [pid 524] <... futex resumed>) = 0 [pid 523] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 522] <... futex resumed>) = 1 [pid 521] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 518] <... futex resumed>) = 0 [pid 524] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 523] <... futex resumed>) = 1 [pid 519] <... futex resumed>) = 0 [pid 522] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 525] <... set_robust_list resumed>) = 0 [pid 523] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 521] <... futex resumed>) = 1 [pid 519] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 518] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 516] <... futex resumed>) = 0 [pid 525] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 523] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 522] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 521] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 519] <... futex resumed>) = 0 [pid 518] <... futex resumed>) = 0 [pid 516] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 525] <... prctl resumed>) = 0 [pid 523] memfd_create("syzkaller", 0 [pid 522] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 521] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 519] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 518] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 516] <... futex resumed>) = 0 [pid 523] <... memfd_create resumed>) = 6 [pid 523] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 522] <... openat resumed>) = 4 [pid 521] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 516] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 525] setpgid(0, 0 [pid 523] <... mmap resumed>) = 0x7fe6f03b1000 [pid 522] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 521] <... open resumed>) = 5 [pid 525] <... setpgid resumed>) = 0 [pid 523] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 522] <... futex resumed>) = 1 [pid 521] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 518] <... futex resumed>) = 0 [pid 525] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 523] <... write resumed>) = 131072 [pid 522] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 521] <... futex resumed>) = 1 [pid 518] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 516] <... futex resumed>) = 0 [pid 525] <... openat resumed>) = 3 [pid 523] munmap(0x7fe6f03b1000, 138412032 [pid 522] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 521] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 518] <... futex resumed>) = 0 [pid 516] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 525] write(3, "1000", 4 [pid 523] <... munmap resumed>) = 0 [pid 522] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 521] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 518] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 516] <... futex resumed>) = 0 [pid 525] <... write resumed>) = 4 [pid 523] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 521] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0./strace-static-x86_64: Process 526 attached [pid 525] close(3 [pid 523] <... openat resumed>) = 7 [pid 522] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 516] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 526] set_robust_list(0x7fe6f87d19a0, 24 [pid 523] ioctl(7, LOOP_SET_FD, 6 [pid 526] <... set_robust_list resumed>) = 0 [pid 525] <... close resumed>) = 0 [pid 523] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 522] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 521] <... mmap resumed>) = 0x20000000 executing program [pid 526] rt_sigprocmask(SIG_SETMASK, [], [pid 525] write(1, "executing program\n", 18 [pid 523] ioctl(7, LOOP_CLR_FD [pid 522] <... futex resumed>) = 1 [pid 521] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 518] <... futex resumed>) = 0 [pid 526] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 525] <... write resumed>) = 18 [pid 523] <... ioctl resumed>) = 0 [pid 522] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 521] <... futex resumed>) = 1 [pid 518] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 516] <... futex resumed>) = 0 [pid 526] memfd_create("syzkaller", 0 [pid 525] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 522] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 521] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 518] <... futex resumed>) = 0 [pid 516] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 526] <... memfd_create resumed>) = 3 [pid 525] <... futex resumed>) = 0 [pid 522] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 521] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 518] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 516] <... futex resumed>) = 0 [pid 525] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 522] <... open resumed>) = 5 [pid 521] memfd_create("syzkaller", 0 [pid 525] <... rt_sigaction resumed>NULL, 8) = 0 [pid 522] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 516] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 525] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 522] <... futex resumed>) = 1 [pid 521] <... memfd_create resumed>) = 6 [pid 518] <... futex resumed>) = 0 [pid 525] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 522] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 521] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 518] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 525] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 522] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 521] <... mmap resumed>) = 0x7fe6f03b1000 [pid 518] <... futex resumed>) = 0 [pid 525] <... mmap resumed>) = 0x7fe6f87b1000 [pid 522] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 526] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 526] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 525] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 523] ioctl(7, LOOP_SET_FD, 6 [pid 522] <... mmap resumed>) = 0x20000000 [pid 521] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 518] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 526] <... write resumed>) = 262144 [pid 525] <... mprotect resumed>) = 0 [pid 523] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 522] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 523] close(7) = 0 [pid 521] <... write resumed>) = 131072 [pid 518] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 525] rt_sigprocmask(SIG_BLOCK, ~[], [pid 523] close(6 [pid 522] <... futex resumed>) = 0 [pid 521] munmap(0x7fe6f03b1000, 138412032 [pid 518] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 525] <... rt_sigprocmask resumed>[], 8) = 0 [pid 523] <... close resumed>) = 0 [pid 523] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 519] <... futex resumed>) = 0 [pid 523] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 519] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 526] munmap(0x7fe6f03b1000, 138412032 [pid 523] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 519] <... futex resumed>) = 0 [pid 526] <... munmap resumed>) = 0 [pid 523] mknod(0x20000000, 000 [pid 519] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 526] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 523] <... mknod resumed>) = -1 EEXIST (File exists) [pid 526] <... openat resumed>) = 4 [pid 523] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 526] ioctl(4, LOOP_SET_FD, 3 [pid 523] <... futex resumed>) = 1 [pid 519] <... futex resumed>) = 0 [pid 526] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 523] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 519] exit_group(0 [pid 526] ioctl(4, LOOP_CLR_FD [pid 523] <... futex resumed>) = ? [pid 519] <... exit_group resumed>) = ? [pid 526] <... ioctl resumed>) = 0 [pid 523] +++ exited with 0 +++ [pid 519] +++ exited with 0 +++ [pid 525] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 522] memfd_create("syzkaller", 0 [pid 521] <... munmap resumed>) = 0 [pid 518] <... futex resumed>) = 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=519, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 522] <... memfd_create resumed>) = 6 [pid 521] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 518] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 525] <... clone3 resumed> => {parent_tid=[527]}, 88) = 527 [pid 522] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 521] <... openat resumed>) = 7 [pid 525] rt_sigprocmask(SIG_SETMASK, [], [pid 522] <... mmap resumed>) = 0x7fe6f03b1000 [pid 521] ioctl(7, LOOP_SET_FD, 6 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 525] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 522] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 521] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] <... openat resumed>) = 3 [pid 526] ioctl(4, LOOP_SET_FD, 3 [pid 525] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 522] <... write resumed>) = 131072 [pid 521] ioctl(7, LOOP_CLR_FD [pid 303] ioctl(3, LOOP_CLR_FD [pid 526] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 525] <... futex resumed>) = 0 [pid 522] munmap(0x7fe6f03b1000, 138412032 [pid 521] <... ioctl resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 526] close(4 [pid 525] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 522] <... munmap resumed>) = 0 [pid 303] close(3 [pid 526] <... close resumed>) = 0 [pid 522] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 303] <... close resumed>) = 0 [pid 526] close(3 [pid 522] <... openat resumed>) = 7 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 527 attached [pid 526] <... close resumed>) = 0 [pid 522] ioctl(7, LOOP_SET_FD, 6./strace-static-x86_64: Process 528 attached [pid 527] set_robust_list(0x7fe6f87d19a0, 24 [pid 526] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 522] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 521] ioctl(7, LOOP_SET_FD, 6 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 528 [pid 528] set_robust_list(0x5555636e06a0, 24 [pid 527] <... set_robust_list resumed>) = 0 [pid 526] <... futex resumed>) = 1 [pid 524] <... futex resumed>) = 0 [pid 522] ioctl(7, LOOP_CLR_FD [pid 521] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 528] <... set_robust_list resumed>) = 0 [pid 527] rt_sigprocmask(SIG_SETMASK, [], [pid 524] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 522] <... ioctl resumed>) = 0 [pid 521] close(7 [pid 528] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 527] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 526] chdir("./file0" [pid 524] <... futex resumed>) = 0 [pid 521] <... close resumed>) = 0 [pid 528] <... prctl resumed>) = 0 [pid 527] memfd_create("syzkaller", 0 [pid 526] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 524] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 521] close(6 [pid 528] setpgid(0, 0 [pid 527] <... memfd_create resumed>) = 3 [pid 526] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 524] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 527] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 526] <... futex resumed>) = 0 [pid 524] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 522] ioctl(7, LOOP_SET_FD, 6 [pid 528] <... setpgid resumed>) = 0 [pid 521] <... close resumed>) = 0 [pid 527] <... mmap resumed>) = 0x7fe6f03b1000 [pid 526] creat("./bus", 000 [pid 524] <... futex resumed>) = 0 [pid 522] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 528] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 526] <... creat resumed>) = 3 [pid 524] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 522] close(7 [pid 526] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 524] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 522] <... close resumed>) = 0 [pid 528] <... openat resumed>) = 3 [pid 527] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 526] <... futex resumed>) = 0 [pid 524] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 522] close(6 [pid 521] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 528] write(3, "1000", 4 [pid 526] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 524] <... futex resumed>) = 0 [pid 522] <... close resumed>) = 0 [pid 528] <... write resumed>) = 4 [pid 527] <... write resumed>) = 262144 [pid 526] <... openat resumed>) = 4 [pid 524] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 522] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 521] <... futex resumed>) = 1 [pid 516] <... futex resumed>) = 0 [pid 528] close(3 [pid 527] munmap(0x7fe6f03b1000, 138412032 [pid 526] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 524] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 522] <... futex resumed>) = 1 [pid 521] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 518] <... futex resumed>) = 0 [pid 516] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 528] <... close resumed>) = 0 [pid 527] <... munmap resumed>) = 0 [pid 526] <... futex resumed>) = 0 executing program [pid 524] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 522] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 521] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 518] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 516] <... futex resumed>) = 0 [pid 528] write(1, "executing program\n", 18 [pid 527] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 526] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 524] <... futex resumed>) = 0 [pid 522] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 521] mknod(0x20000000, 000 [pid 518] <... futex resumed>) = 0 [pid 516] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 528] <... write resumed>) = 18 [pid 527] <... openat resumed>) = 4 [pid 526] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 524] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 522] mknod(0x20000000, 000 [pid 521] <... mknod resumed>) = -1 EEXIST (File exists) [pid 518] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 528] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 527] ioctl(4, LOOP_SET_FD, 3 [pid 526] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 524] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 522] <... mknod resumed>) = -1 EEXIST (File exists) [pid 521] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 528] <... futex resumed>) = 0 [pid 527] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 526] <... futex resumed>) = 0 [pid 524] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 522] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 521] <... futex resumed>) = 1 [pid 516] <... futex resumed>) = 0 [pid 528] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 527] ioctl(4, LOOP_CLR_FD [pid 526] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 524] <... futex resumed>) = 0 [pid 522] <... futex resumed>) = 1 [pid 521] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 518] <... futex resumed>) = 0 [pid 528] <... rt_sigaction resumed>NULL, 8) = 0 [pid 527] <... ioctl resumed>) = 0 [pid 526] <... open resumed>) = 5 [pid 524] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 522] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 516] exit_group(0 [pid 528] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 526] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 524] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 518] exit_group(0 [pid 526] <... futex resumed>) = 0 [pid 524] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 516] <... exit_group resumed>) = ? [pid 528] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 526] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 524] <... futex resumed>) = 0 [pid 522] <... futex resumed>) = ? [pid 521] <... futex resumed>) = ? [pid 518] <... exit_group resumed>) = ? [pid 528] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 526] <... mmap resumed>) = 0x20000000 [pid 524] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 522] +++ exited with 0 +++ [pid 526] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 524] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 526] <... futex resumed>) = 0 [pid 524] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 526] memfd_create("syzkaller", 0 [pid 524] <... futex resumed>) = 0 [pid 521] +++ exited with 0 +++ [pid 516] +++ exited with 0 +++ [pid 528] <... mmap resumed>) = 0x7fe6f87b1000 [pid 526] <... memfd_create resumed>) = 6 [pid 524] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 518] +++ exited with 0 +++ [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=516, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 528] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 527] ioctl(4, LOOP_SET_FD, 3 [pid 526] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=518, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 528] <... mprotect resumed>) = 0 [pid 527] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 526] <... mmap resumed>) = 0x7fe6f03b1000 [pid 304] <... restart_syscall resumed>) = 0 [pid 528] rt_sigprocmask(SIG_BLOCK, ~[], [pid 527] close(4 [pid 526] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 528] <... rt_sigprocmask resumed>[], 8) = 0 [pid 527] <... close resumed>) = 0 [pid 526] <... write resumed>) = 131072 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 528] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 527] close(3 [pid 526] munmap(0x7fe6f03b1000, 138412032 [pid 306] <... openat resumed>) = 3 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 526] <... munmap resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 304] <... openat resumed>) = 3 [pid 528] <... clone3 resumed> => {parent_tid=[529]}, 88) = 529 [pid 527] <... close resumed>) = 0 [pid 526] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 306] <... ioctl resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 528] rt_sigprocmask(SIG_SETMASK, [], [pid 527] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 526] <... openat resumed>) = 7 [pid 306] close(3 [pid 304] <... ioctl resumed>) = 0 [pid 528] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 527] <... futex resumed>) = 1 [pid 526] ioctl(7, LOOP_SET_FD, 6 [pid 525] <... futex resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 304] close(3 [pid 528] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 527] chdir("./file0" [pid 526] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 525] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 304] <... close resumed>) = 0 [pid 528] <... futex resumed>) = 0 [pid 527] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 526] ioctl(7, LOOP_CLR_FD [pid 525] <... futex resumed>) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 528] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 527] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 526] <... ioctl resumed>) = 0 [pid 525] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 530 [pid 527] <... futex resumed>) = 0 [pid 525] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 531 [pid 527] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 525] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 527] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 525] <... futex resumed>) = 0 [pid 527] creat("./bus", 000 [pid 525] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 527] <... creat resumed>) = 3 [pid 527] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 525] <... futex resumed>) = 0 [pid 527] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 525] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 527] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 525] <... futex resumed>) = 0 [pid 527] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 526] ioctl(7, LOOP_SET_FD, 6 [pid 525] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 527] <... openat resumed>) = 4 [pid 526] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 527] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 526] close(7 [pid 527] <... futex resumed>) = 1 [pid 526] <... close resumed>) = 0 [pid 525] <... futex resumed>) = 0 [pid 527] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 526] close(6 [pid 525] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 527] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 526] <... close resumed>) = 0 [pid 525] <... futex resumed>) = 0 ./strace-static-x86_64: Process 529 attached [pid 527] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 526] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 525] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 529] set_robust_list(0x7fe6f87d19a0, 24 [pid 527] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 526] <... futex resumed>) = 1 [pid 524] <... futex resumed>) = 0 [pid 529] <... set_robust_list resumed>) = 0 [pid 527] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 526] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 524] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 531 attached ./strace-static-x86_64: Process 530 attached [pid 529] rt_sigprocmask(SIG_SETMASK, [], [pid 527] <... futex resumed>) = 1 [pid 526] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 525] <... futex resumed>) = 0 [pid 524] <... futex resumed>) = 0 [pid 531] set_robust_list(0x5555636e06a0, 24 [pid 530] set_robust_list(0x5555636e06a0, 24 [pid 529] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 527] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 526] mknod(0x20000000, 000 [pid 525] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 524] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 531] <... set_robust_list resumed>) = 0 [pid 530] <... set_robust_list resumed>) = 0 [pid 529] memfd_create("syzkaller", 0 [pid 527] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 526] <... mknod resumed>) = -1 EEXIST (File exists) [pid 525] <... futex resumed>) = 0 [pid 531] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 530] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 529] <... memfd_create resumed>) = 3 [pid 527] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 526] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 525] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 531] <... prctl resumed>) = 0 [pid 530] <... prctl resumed>) = 0 [pid 529] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 527] <... open resumed>) = 5 [pid 526] <... futex resumed>) = 1 [pid 524] <... futex resumed>) = 0 [pid 531] setpgid(0, 0 [pid 530] setpgid(0, 0 [pid 529] <... mmap resumed>) = 0x7fe6f03b1000 [pid 527] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 526] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 524] exit_group(0 [pid 530] <... setpgid resumed>) = 0 [pid 527] <... futex resumed>) = 1 [pid 526] <... futex resumed>) = ? [pid 525] <... futex resumed>) = 0 [pid 524] <... exit_group resumed>) = ? [pid 531] <... setpgid resumed>) = 0 [pid 530] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 529] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 527] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 526] +++ exited with 0 +++ [pid 525] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 524] +++ exited with 0 +++ [pid 527] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 525] <... futex resumed>) = 0 [pid 527] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 525] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=524, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 531] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 530] <... openat resumed>) = 3 [pid 527] <... mmap resumed>) = 0x20000000 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 527] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 531] <... openat resumed>) = 3 [pid 530] write(3, "1000", 4 [pid 527] <... futex resumed>) = 1 [pid 525] <... futex resumed>) = 0 [pid 531] write(3, "1000", 4 [pid 527] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 525] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 531] <... write resumed>) = 4 [pid 527] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 525] <... futex resumed>) = 0 [pid 531] close(3 [pid 530] <... write resumed>) = 4 [pid 527] memfd_create("syzkaller", 0 [pid 525] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 531] <... close resumed>) = 0 [pid 530] close(3 [pid 527] <... memfd_create resumed>) = 6 [pid 531] write(1, "executing program\n", 18 [pid 530] <... close resumed>) = 0 [pid 527] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0executing program executing program [pid 531] <... write resumed>) = 18 [pid 530] write(1, "executing program\n", 18 [pid 529] <... write resumed>) = 262144 [pid 527] <... mmap resumed>) = 0x7fe6f03b1000 [pid 530] <... write resumed>) = 18 [pid 530] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 530] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 530] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 531] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 530] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 529] munmap(0x7fe6f03b1000, 138412032 [pid 527] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 531] <... futex resumed>) = 0 [pid 530] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 529] <... munmap resumed>) = 0 [pid 527] <... write resumed>) = 131072 [pid 305] <... restart_syscall resumed>) = 0 [pid 531] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 530] <... mmap resumed>) = 0x7fe6f87b1000 [pid 529] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 527] munmap(0x7fe6f03b1000, 138412032 [pid 531] <... rt_sigaction resumed>NULL, 8) = 0 [pid 530] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 527] <... munmap resumed>) = 0 [pid 529] <... openat resumed>) = 4 [pid 531] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 530] <... mprotect resumed>) = 0 [pid 527] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 530] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 531] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 530] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 529] ioctl(4, LOOP_SET_FD, 3 [pid 527] <... openat resumed>) = 7 [pid 305] <... openat resumed>) = 3 [pid 531] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 529] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 527] ioctl(7, LOOP_SET_FD, 6 [pid 305] ioctl(3, LOOP_CLR_FD [pid 531] <... mmap resumed>) = 0x7fe6f87b1000 [pid 530] <... clone3 resumed> => {parent_tid=[532]}, 88) = 532 [pid 529] ioctl(4, LOOP_CLR_FD [pid 527] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] <... ioctl resumed>) = 0 [pid 531] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 530] rt_sigprocmask(SIG_SETMASK, [], [pid 529] <... ioctl resumed>) = 0 [pid 527] ioctl(7, LOOP_CLR_FD [pid 305] close(3 [pid 531] <... mprotect resumed>) = 0 [pid 530] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 527] <... ioctl resumed>) = 0 [pid 531] rt_sigprocmask(SIG_BLOCK, ~[], [pid 530] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... close resumed>) = 0 [pid 531] <... rt_sigprocmask resumed>[], 8) = 0 [pid 530] <... futex resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 531] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 530] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 529] ioctl(4, LOOP_SET_FD, 3 [pid 527] ioctl(7, LOOP_SET_FD, 6 [pid 531] <... clone3 resumed> => {parent_tid=[534]}, 88) = 534 [pid 529] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 527] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 533 [pid 531] rt_sigprocmask(SIG_SETMASK, [], [pid 529] close(4 [pid 527] close(7 [pid 531] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 531] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 529] <... close resumed>) = 0 [pid 527] <... close resumed>) = 0 [pid 531] <... futex resumed>) = 0 [pid 529] close(3 [pid 527] close(6 [pid 531] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 529] <... close resumed>) = 0 [pid 527] <... close resumed>) = 0 [pid 529] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 527] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 528] <... futex resumed>) = 0 [pid 529] <... futex resumed>) = 1 [pid 528] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 527] <... futex resumed>) = 1 [pid 525] <... futex resumed>) = 0 [pid 529] chdir("./file0" [pid 528] <... futex resumed>) = 0 [pid 527] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 525] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 529] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 528] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 527] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 525] <... futex resumed>) = 0 [pid 529] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 528] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 527] mknod(0x20000000, 000 [pid 525] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 529] <... futex resumed>) = 0 [pid 528] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 527] <... mknod resumed>) = -1 EEXIST (File exists) [pid 529] creat("./bus", 000 [pid 528] <... futex resumed>) = 0 [pid 527] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 528] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 527] <... futex resumed>) = 1 [pid 525] <... futex resumed>) = 0 [pid 529] <... creat resumed>) = 3 [pid 527] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 529] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 525] exit_group(0 [pid 529] <... futex resumed>) = 1 [pid 528] <... futex resumed>) = 0 [pid 529] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 528] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 527] <... futex resumed>) = ? [pid 525] <... exit_group resumed>) = ? [pid 529] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 528] <... futex resumed>) = 0 [pid 527] +++ exited with 0 +++ ./strace-static-x86_64: Process 532 attached [pid 529] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 528] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 525] +++ exited with 0 +++ [pid 532] set_robust_list(0x7fe6f87d19a0, 24 [pid 529] <... openat resumed>) = 4 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=525, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 534 attached ./strace-static-x86_64: Process 533 attached [pid 532] <... set_robust_list resumed>) = 0 [pid 529] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 534] set_robust_list(0x7fe6f87d19a0, 24 [pid 533] set_robust_list(0x5555636e06a0, 24 [pid 532] rt_sigprocmask(SIG_SETMASK, [], [pid 529] <... futex resumed>) = 1 [pid 528] <... futex resumed>) = 0 [pid 534] <... set_robust_list resumed>) = 0 [pid 533] <... set_robust_list resumed>) = 0 [pid 532] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 529] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 528] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 534] rt_sigprocmask(SIG_SETMASK, [], [pid 533] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 532] memfd_create("syzkaller", 0 [pid 529] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 528] <... futex resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 534] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 533] <... prctl resumed>) = 0 [pid 532] <... memfd_create resumed>) = 3 [pid 529] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 528] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] ioctl(3, LOOP_CLR_FD [pid 532] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 302] <... ioctl resumed>) = 0 [pid 534] memfd_create("syzkaller", 0 [pid 533] setpgid(0, 0 [pid 532] <... mmap resumed>) = 0x7fe6f03b1000 [pid 529] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 302] close(3 [pid 534] <... memfd_create resumed>) = 3 [pid 533] <... setpgid resumed>) = 0 [pid 532] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 529] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... close resumed>) = 0 [pid 534] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 533] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 532] <... write resumed>) = 262144 [pid 529] <... futex resumed>) = 1 [pid 528] <... futex resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 534] <... mmap resumed>) = 0x7fe6f03b1000 [pid 533] <... openat resumed>) = 3 [pid 532] munmap(0x7fe6f03b1000, 138412032 [pid 529] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 528] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 533] write(3, "1000", 4 [pid 532] <... munmap resumed>) = 0 [pid 529] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 528] <... futex resumed>) = 0 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 535 [pid 533] <... write resumed>) = 4 [pid 532] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 529] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 528] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 533] close(3 [pid 532] <... openat resumed>) = 4 [pid 529] <... open resumed>) = 5 [pid 533] <... close resumed>) = 0 [pid 532] ioctl(4, LOOP_SET_FD, 3 [pid 529] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 533] write(1, "executing program\n", 18 [pid 532] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 529] <... futex resumed>) = 1 [pid 528] <... futex resumed>) = 0 [pid 529] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 532] ioctl(4, LOOP_CLR_FD [pid 529] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 528] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 533] <... write resumed>) = 18 [pid 529] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 528] <... futex resumed>) = 0 [pid 533] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 532] <... ioctl resumed>) = 0 [pid 529] <... mmap resumed>) = 0x20000000 [pid 528] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 534] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 533] <... futex resumed>) = 0 [pid 529] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 528] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 533] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 529] <... futex resumed>) = 0 [pid 528] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 534] <... write resumed>) = 262144 [pid 533] <... rt_sigaction resumed>NULL, 8) = 0 [pid 529] memfd_create("syzkaller", 0 [pid 528] <... futex resumed>) = 0 [pid 534] munmap(0x7fe6f03b1000, 138412032 [pid 533] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 529] <... memfd_create resumed>) = 6 [pid 528] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 534] <... munmap resumed>) = 0 [pid 533] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 529] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 534] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 533] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 529] <... mmap resumed>) = 0x7fe6f03b1000 ./strace-static-x86_64: Process 535 attached [pid 533] <... mmap resumed>) = 0x7fe6f87b1000 [pid 535] set_robust_list(0x5555636e06a0, 24 [pid 532] ioctl(4, LOOP_SET_FD, 3 [pid 535] <... set_robust_list resumed>) = 0 [pid 534] <... openat resumed>) = 4 [pid 533] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 532] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 529] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 535] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 534] ioctl(4, LOOP_SET_FD, 3 [pid 533] <... mprotect resumed>) = 0 [pid 532] close(4 [pid 529] <... write resumed>) = 131072 [pid 535] <... prctl resumed>) = 0 [pid 534] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 533] rt_sigprocmask(SIG_BLOCK, ~[], [pid 532] <... close resumed>) = 0 [pid 529] munmap(0x7fe6f03b1000, 138412032 [pid 535] setpgid(0, 0 [pid 534] ioctl(4, LOOP_CLR_FD [pid 533] <... rt_sigprocmask resumed>[], 8) = 0 [pid 532] close(3 [pid 529] <... munmap resumed>) = 0 [pid 535] <... setpgid resumed>) = 0 [pid 534] <... ioctl resumed>) = 0 [pid 533] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 532] <... close resumed>) = 0 [pid 529] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 535] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 532] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 529] <... openat resumed>) = 7 [pid 535] <... openat resumed>) = 3 [pid 533] <... clone3 resumed> => {parent_tid=[536]}, 88) = 536 [pid 532] <... futex resumed>) = 1 [pid 530] <... futex resumed>) = 0 [pid 529] ioctl(7, LOOP_SET_FD, 6 [pid 535] write(3, "1000", 4 [pid 533] rt_sigprocmask(SIG_SETMASK, [], [pid 532] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 530] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 529] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 535] <... write resumed>) = 4 [pid 534] ioctl(4, LOOP_SET_FD, 3 [pid 533] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 532] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 530] <... futex resumed>) = 0 [pid 529] ioctl(7, LOOP_CLR_FD [pid 535] close(3 [pid 534] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 533] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 532] chdir("./file0" [pid 530] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 535] <... close resumed>) = 0 [pid 534] close(4 [pid 533] <... futex resumed>) = 0 [pid 532] <... chdir resumed>) = -1 ENOTDIR (Not a directory) executing program [pid 529] <... ioctl resumed>) = 0 [pid 535] write(1, "executing program\n", 18 [pid 534] <... close resumed>) = 0 [pid 533] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 532] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 535] <... write resumed>) = 18 [pid 534] close(3 [pid 532] <... futex resumed>) = 1 [pid 530] <... futex resumed>) = 0 [pid 535] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 532] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 530] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 535] <... futex resumed>) = 0 [pid 534] <... close resumed>) = 0 [pid 532] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 530] <... futex resumed>) = 0 [pid 535] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 534] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 532] creat("./bus", 000 [pid 530] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 535] <... rt_sigaction resumed>NULL, 8) = 0 [pid 532] <... creat resumed>) = 3 [pid 535] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 534] <... futex resumed>) = 1 [pid 532] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 531] <... futex resumed>) = 0 [pid 529] ioctl(7, LOOP_SET_FD, 6 [pid 535] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 534] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 532] <... futex resumed>) = 1 [pid 531] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 530] <... futex resumed>) = 0 [pid 529] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 536 attached [pid 535] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 534] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 532] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 531] <... futex resumed>) = 0 [pid 530] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 529] close(7 [pid 536] set_robust_list(0x7fe6f87d19a0, 24 [pid 535] <... mmap resumed>) = 0x7fe6f87b1000 [pid 534] chdir("./file0" [pid 532] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 531] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 530] <... futex resumed>) = 0 [pid 529] <... close resumed>) = 0 [pid 536] <... set_robust_list resumed>) = 0 [pid 535] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 534] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 532] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 530] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 529] close(6 [pid 536] rt_sigprocmask(SIG_SETMASK, [], [pid 535] <... mprotect resumed>) = 0 [pid 534] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 532] <... openat resumed>) = 4 [pid 536] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 535] rt_sigprocmask(SIG_BLOCK, ~[], [pid 534] <... futex resumed>) = 1 [pid 532] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 531] <... futex resumed>) = 0 [pid 529] <... close resumed>) = 0 [pid 536] memfd_create("syzkaller", 0 [pid 535] <... rt_sigprocmask resumed>[], 8) = 0 [pid 534] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 532] <... futex resumed>) = 1 [pid 531] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 530] <... futex resumed>) = 0 [pid 529] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 536] <... memfd_create resumed>) = 3 [pid 535] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 534] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 532] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 531] <... futex resumed>) = 0 [pid 530] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 529] <... futex resumed>) = 1 [pid 528] <... futex resumed>) = 0 [pid 536] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 534] creat("./bus", 000 [pid 532] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 531] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 530] <... futex resumed>) = 0 [pid 529] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 528] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 536] <... mmap resumed>) = 0x7fe6f03b1000 [pid 535] <... clone3 resumed> => {parent_tid=[537]}, 88) = 537 [pid 534] <... creat resumed>) = 3 [pid 532] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 530] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 529] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 535] rt_sigprocmask(SIG_SETMASK, [], [pid 534] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 529] mknod(0x20000000, 000 [pid 528] <... futex resumed>) = 0 [pid 535] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 534] <... futex resumed>) = 1 [pid 531] <... futex resumed>) = 0 [pid 529] <... mknod resumed>) = -1 EEXIST (File exists) [pid 528] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 535] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 534] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 531] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 529] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 528] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 535] <... futex resumed>) = 0 [pid 534] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 531] <... futex resumed>) = 0 [pid 529] <... futex resumed>) = 0 [pid 536] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 535] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 534] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 532] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 531] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 529] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 528] exit_group(0 [pid 532] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 536] <... write resumed>) = 262144 [pid 534] <... openat resumed>) = 4 [pid 532] <... futex resumed>) = 1 [pid 530] <... futex resumed>) = 0 [pid 529] <... futex resumed>) = ? [pid 528] <... exit_group resumed>) = ? [pid 536] munmap(0x7fe6f03b1000, 138412032 [pid 534] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 532] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 530] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 529] +++ exited with 0 +++ [pid 532] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 530] <... futex resumed>) = 0 [pid 536] <... munmap resumed>) = 0 [pid 534] <... futex resumed>) = 1 [pid 532] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 531] <... futex resumed>) = 0 [pid 530] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 528] +++ exited with 0 +++ ./strace-static-x86_64: Process 537 attached [pid 536] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 534] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 532] <... open resumed>) = 5 [pid 531] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=528, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 537] set_robust_list(0x7fe6f87d19a0, 24 [pid 536] <... openat resumed>) = 4 [pid 534] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 532] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 531] <... futex resumed>) = 0 [pid 537] <... set_robust_list resumed>) = 0 [pid 536] ioctl(4, LOOP_SET_FD, 3 [pid 534] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 532] <... futex resumed>) = 1 [pid 531] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 530] <... futex resumed>) = 0 [pid 537] rt_sigprocmask(SIG_SETMASK, [], [pid 536] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 532] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 530] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 537] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 536] ioctl(4, LOOP_CLR_FD [pid 532] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 530] <... futex resumed>) = 0 [pid 303] <... openat resumed>) = 3 [pid 537] memfd_create("syzkaller", 0 [pid 536] <... ioctl resumed>) = 0 [pid 532] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 530] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] ioctl(3, LOOP_CLR_FD [pid 537] <... memfd_create resumed>) = 3 [pid 532] <... mmap resumed>) = 0x20000000 [pid 303] <... ioctl resumed>) = 0 [pid 537] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 532] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] close(3 [pid 537] <... mmap resumed>) = 0x7fe6f03b1000 [pid 532] <... futex resumed>) = 1 [pid 530] <... futex resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 537] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 532] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 530] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 537] <... write resumed>) = 262144 [pid 536] ioctl(4, LOOP_SET_FD, 3 [pid 532] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 530] <... futex resumed>) = 0 [pid 536] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 534] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 532] memfd_create("syzkaller", 0 [pid 530] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 539 [pid 536] close(4 [pid 534] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 532] <... memfd_create resumed>) = 6 [pid 536] <... close resumed>) = 0 [pid 534] <... futex resumed>) = 1 [pid 532] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 531] <... futex resumed>) = 0 [pid 536] close(3 [pid 534] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 532] <... mmap resumed>) = 0x7fe6f03b1000 [pid 531] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 536] <... close resumed>) = 0 [pid 534] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 532] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 531] <... futex resumed>) = 0 [pid 536] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 534] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 532] <... write resumed>) = 131072 [pid 531] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 536] <... futex resumed>) = 1 [pid 533] <... futex resumed>) = 0 [pid 532] munmap(0x7fe6f03b1000, 138412032 [pid 536] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 534] <... open resumed>) = 5 [pid 533] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 532] <... munmap resumed>) = 0 [pid 536] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 534] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 533] <... futex resumed>) = 0 [pid 532] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 536] chdir("./file0" [pid 534] <... futex resumed>) = 1 [pid 533] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 532] <... openat resumed>) = 7 [pid 531] <... futex resumed>) = 0 [pid 536] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 534] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 532] ioctl(7, LOOP_SET_FD, 6 [pid 531] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 536] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 534] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 532] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 536] <... futex resumed>) = 1 [pid 534] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 533] <... futex resumed>) = 0 [pid 532] ioctl(7, LOOP_CLR_FD [pid 531] <... futex resumed>) = 0 [pid 536] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 532] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 539 attached [pid 537] munmap(0x7fe6f03b1000, 138412032 [pid 536] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 534] <... mmap resumed>) = 0x20000000 [pid 533] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 531] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 536] creat("./bus", 000 [pid 534] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 533] <... futex resumed>) = 0 [pid 532] ioctl(7, LOOP_SET_FD, 6 [pid 531] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 536] <... creat resumed>) = 3 [pid 534] <... futex resumed>) = 0 [pid 533] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 532] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 531] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 536] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 534] memfd_create("syzkaller", 0 [pid 533] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 532] close(7 [pid 531] <... futex resumed>) = 0 [pid 539] set_robust_list(0x5555636e06a0, 24 [pid 537] <... munmap resumed>) = 0 [pid 536] <... futex resumed>) = 0 [pid 534] <... memfd_create resumed>) = 6 [pid 533] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 532] <... close resumed>) = 0 [pid 531] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 539] <... set_robust_list resumed>) = 0 [pid 537] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 536] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 534] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 533] <... futex resumed>) = 0 [pid 532] close(6 [pid 539] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 537] <... openat resumed>) = 4 [pid 536] <... openat resumed>) = 4 [pid 534] <... mmap resumed>) = 0x7fe6f03b1000 [pid 533] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 532] <... close resumed>) = 0 [pid 539] <... prctl resumed>) = 0 [pid 537] ioctl(4, LOOP_SET_FD, 3 [pid 536] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 534] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 533] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 532] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 539] setpgid(0, 0 [pid 537] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 536] <... futex resumed>) = 0 [pid 532] <... futex resumed>) = 1 [pid 530] <... futex resumed>) = 0 [pid 539] <... setpgid resumed>) = 0 [pid 537] ioctl(4, LOOP_CLR_FD [pid 536] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 534] <... write resumed>) = 131072 [pid 533] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 532] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 530] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 539] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 537] <... ioctl resumed>) = 0 [pid 536] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 534] munmap(0x7fe6f03b1000, 138412032 [pid 533] <... futex resumed>) = 0 [pid 532] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 530] <... futex resumed>) = 0 [pid 539] <... openat resumed>) = 3 [pid 536] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 534] <... munmap resumed>) = 0 [pid 533] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 532] mknod(0x20000000, 000 [pid 530] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 539] write(3, "1000", 4 [pid 536] <... futex resumed>) = 0 [pid 534] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 533] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 532] <... mknod resumed>) = -1 EEXIST (File exists) [pid 539] <... write resumed>) = 4 [pid 537] ioctl(4, LOOP_SET_FD, 3 [pid 536] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 534] <... openat resumed>) = 7 [pid 533] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 532] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 539] close(3 [pid 537] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 536] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 534] ioctl(7, LOOP_SET_FD, 6 [pid 533] <... futex resumed>) = 0 [pid 532] <... futex resumed>) = 1 [pid 530] <... futex resumed>) = 0 [pid 539] <... close resumed>) = 0 [pid 537] close(4 [pid 536] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 534] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 533] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 532] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 530] exit_group(0executing program [pid 539] write(1, "executing program\n", 18 [pid 537] <... close resumed>) = 0 [pid 536] <... open resumed>) = 5 [pid 534] ioctl(7, LOOP_CLR_FD [pid 532] <... futex resumed>) = ? [pid 530] <... exit_group resumed>) = ? [pid 539] <... write resumed>) = 18 [pid 537] close(3 [pid 536] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 534] <... ioctl resumed>) = 0 [pid 532] +++ exited with 0 +++ [pid 530] +++ exited with 0 +++ [pid 539] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 537] <... close resumed>) = 0 [pid 536] <... futex resumed>) = 1 [pid 533] <... futex resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=530, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 539] <... futex resumed>) = 0 [pid 537] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 536] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 533] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 539] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 537] <... futex resumed>) = 1 [pid 536] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 535] <... futex resumed>) = 0 [pid 533] <... futex resumed>) = 0 [pid 539] <... rt_sigaction resumed>NULL, 8) = 0 [pid 537] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 536] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 535] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 539] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 537] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 535] <... futex resumed>) = 0 [pid 533] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 539] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 537] chdir("./file0" [pid 536] <... mmap resumed>) = 0x20000000 [pid 535] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 534] ioctl(7, LOOP_SET_FD, 6 [pid 539] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 537] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 536] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 534] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 539] <... mmap resumed>) = 0x7fe6f87b1000 [pid 537] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 536] <... futex resumed>) = 1 [pid 534] close(7 [pid 533] <... futex resumed>) = 0 [pid 539] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 537] <... futex resumed>) = 1 [pid 536] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 535] <... futex resumed>) = 0 [pid 534] <... close resumed>) = 0 [pid 539] <... mprotect resumed>) = 0 [pid 537] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 536] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 535] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 534] close(6 [pid 533] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... restart_syscall resumed>) = 0 [pid 539] rt_sigprocmask(SIG_BLOCK, ~[], [pid 537] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 536] memfd_create("syzkaller", 0 [pid 535] <... futex resumed>) = 0 [pid 534] <... close resumed>) = 0 [pid 533] <... futex resumed>) = 0 [pid 539] <... rt_sigprocmask resumed>[], 8) = 0 [pid 537] creat("./bus", 000 [pid 536] <... memfd_create resumed>) = 6 [pid 535] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 534] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 533] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 539] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 537] <... creat resumed>) = 3 [pid 536] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 534] <... futex resumed>) = 1 [pid 531] <... futex resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 537] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 536] <... mmap resumed>) = 0x7fe6f03b1000 [pid 534] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 531] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... openat resumed>) = 3 [pid 539] <... clone3 resumed> => {parent_tid=[540]}, 88) = 540 [pid 537] <... futex resumed>) = 1 [pid 536] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 535] <... futex resumed>) = 0 [pid 534] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 531] <... futex resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 539] rt_sigprocmask(SIG_SETMASK, [], [pid 537] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 535] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... ioctl resumed>) = 0 [pid 539] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 537] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 536] <... write resumed>) = 131072 [pid 535] <... futex resumed>) = 0 [pid 534] mknod(0x20000000, 000 [pid 531] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] close(3 [pid 539] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 537] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 536] munmap(0x7fe6f03b1000, 138412032 [pid 535] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 534] <... mknod resumed>) = -1 EEXIST (File exists) [pid 306] <... close resumed>) = 0 [pid 539] <... futex resumed>) = 0 [pid 537] <... openat resumed>) = 4 [pid 536] <... munmap resumed>) = 0 [pid 534] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 539] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 537] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 536] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 534] <... futex resumed>) = 1 [pid 531] <... futex resumed>) = 0 [pid 537] <... futex resumed>) = 1 [pid 536] <... openat resumed>) = 7 [pid 535] <... futex resumed>) = 0 [pid 534] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 531] exit_group(0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 541 [pid 537] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 536] ioctl(7, LOOP_SET_FD, 6 [pid 535] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 534] <... futex resumed>) = ? [pid 531] <... exit_group resumed>) = ? [pid 537] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 536] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 535] <... futex resumed>) = 0 [pid 534] +++ exited with 0 +++ [pid 537] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 536] ioctl(7, LOOP_CLR_FD [pid 535] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 531] +++ exited with 0 +++ ./strace-static-x86_64: Process 540 attached [pid 537] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 536] <... ioctl resumed>) = 0 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=531, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 540] set_robust_list(0x7fe6f87d19a0, 24 [pid 537] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 540] <... set_robust_list resumed>) = 0 [pid 537] <... futex resumed>) = 1 [pid 535] <... futex resumed>) = 0 [pid 540] rt_sigprocmask(SIG_SETMASK, [], [pid 537] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 535] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 540] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 537] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 535] <... futex resumed>) = 0 [pid 304] <... openat resumed>) = 3 [pid 537] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 535] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] ioctl(3, LOOP_CLR_FD [pid 540] memfd_create("syzkaller", 0 [pid 537] <... open resumed>) = 5 [pid 304] <... ioctl resumed>) = 0 [pid 540] <... memfd_create resumed>) = 3 [pid 537] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 536] ioctl(7, LOOP_SET_FD, 6 [pid 304] close(3./strace-static-x86_64: Process 541 attached [pid 540] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 537] <... futex resumed>) = 1 [pid 536] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 535] <... futex resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 541] set_robust_list(0x5555636e06a0, 24 [pid 540] <... mmap resumed>) = 0x7fe6f03b1000 [pid 537] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 536] close(7 [pid 535] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 541] <... set_robust_list resumed>) = 0 [pid 537] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 536] <... close resumed>) = 0 [pid 535] <... futex resumed>) = 0 [pid 541] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 537] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 536] close(6 [pid 535] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 542 [pid 541] <... prctl resumed>) = 0 [pid 540] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 537] <... mmap resumed>) = 0x20000000 [pid 536] <... close resumed>) = 0 [pid 541] setpgid(0, 0 [pid 537] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 536] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 541] <... setpgid resumed>) = 0 [pid 537] <... futex resumed>) = 1 [pid 536] <... futex resumed>) = 1 [pid 535] <... futex resumed>) = 0 [pid 533] <... futex resumed>) = 0 [pid 541] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 537] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 536] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 535] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 533] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 541] <... openat resumed>) = 3 [pid 537] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 536] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 535] <... futex resumed>) = 0 [pid 533] <... futex resumed>) = 0 [pid 541] write(3, "1000", 4 [pid 537] memfd_create("syzkaller", 0 [pid 536] mknod(0x20000000, 000 [pid 535] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 533] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 541] <... write resumed>) = 4 [pid 537] <... memfd_create resumed>) = 6 [pid 536] <... mknod resumed>) = -1 EEXIST (File exists) [pid 541] close(3 [pid 537] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 536] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 541] <... close resumed>) = 0 [pid 537] <... mmap resumed>) = 0x7fe6f03b1000 executing program [pid 541] write(1, "executing program\n", 18 [pid 540] <... write resumed>) = 262144 [pid 537] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 536] <... futex resumed>) = 1 [pid 533] <... futex resumed>) = 0 [pid 541] <... write resumed>) = 18 [pid 540] munmap(0x7fe6f03b1000, 138412032 [pid 537] <... write resumed>) = 131072 [pid 536] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 533] exit_group(0 [pid 541] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 537] munmap(0x7fe6f03b1000, 138412032 [pid 536] <... futex resumed>) = ? [pid 533] <... exit_group resumed>) = ? [pid 541] <... futex resumed>) = 0 [pid 540] <... munmap resumed>) = 0 [pid 537] <... munmap resumed>) = 0 [pid 536] +++ exited with 0 +++ [pid 541] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 537] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 542 attached [pid 541] <... rt_sigaction resumed>NULL, 8) = 0 [pid 537] <... openat resumed>) = 7 [pid 533] +++ exited with 0 +++ [pid 542] set_robust_list(0x5555636e06a0, 24 [pid 541] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 540] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 537] ioctl(7, LOOP_SET_FD, 6 [pid 542] <... set_robust_list resumed>) = 0 [pid 541] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 537] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=533, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 542] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 541] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 540] <... openat resumed>) = 4 [pid 537] ioctl(7, LOOP_CLR_FD [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 542] <... prctl resumed>) = 0 [pid 541] <... mmap resumed>) = 0x7fe6f87b1000 [pid 537] <... ioctl resumed>) = 0 [pid 542] setpgid(0, 0 [pid 541] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 540] ioctl(4, LOOP_SET_FD, 3 [pid 542] <... setpgid resumed>) = 0 [pid 541] <... mprotect resumed>) = 0 [pid 542] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 541] rt_sigprocmask(SIG_BLOCK, ~[], [pid 542] <... openat resumed>) = 3 [pid 541] <... rt_sigprocmask resumed>[], 8) = 0 [pid 540] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 542] write(3, "1000", 4 [pid 541] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 542] <... write resumed>) = 4 [pid 540] ioctl(4, LOOP_CLR_FD [pid 537] ioctl(7, LOOP_SET_FD, 6 [pid 542] close(3 [pid 541] <... clone3 resumed> => {parent_tid=[543]}, 88) = 543 [pid 537] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 542] <... close resumed>) = 0 [pid 541] rt_sigprocmask(SIG_SETMASK, [], executing program [pid 537] close(7 [pid 542] write(1, "executing program\n", 18 [pid 541] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 540] <... ioctl resumed>) = 0 [pid 537] <... close resumed>) = 0 [pid 542] <... write resumed>) = 18 [pid 541] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 537] close(6 [pid 542] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 541] <... futex resumed>) = 0 [pid 537] <... close resumed>) = 0 [pid 542] <... futex resumed>) = 0 [pid 541] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 537] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 542] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 537] <... futex resumed>) = 1 [pid 535] <... futex resumed>) = 0 [pid 542] <... rt_sigaction resumed>NULL, 8) = 0 [pid 537] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 535] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 542] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 537] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 535] <... futex resumed>) = 0 [pid 542] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 537] mknod(0x20000000, 000 [pid 535] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... restart_syscall resumed>) = 0 [pid 542] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 537] <... mknod resumed>) = -1 EEXIST (File exists) [pid 542] <... mmap resumed>) = 0x7fe6f87b1000 [pid 540] ioctl(4, LOOP_SET_FD, 3 [pid 537] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 543 attached [pid 542] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 540] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 537] <... futex resumed>) = 1 [pid 535] <... futex resumed>) = 0 [pid 543] set_robust_list(0x7fe6f87d19a0, 24 [pid 542] <... mprotect resumed>) = 0 [pid 540] close(4 [pid 537] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 535] exit_group(0 [pid 543] <... set_robust_list resumed>) = 0 [pid 542] rt_sigprocmask(SIG_BLOCK, ~[], [pid 540] <... close resumed>) = 0 [pid 537] <... futex resumed>) = ? [pid 535] <... exit_group resumed>) = ? [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 543] rt_sigprocmask(SIG_SETMASK, [], [pid 542] <... rt_sigprocmask resumed>[], 8) = 0 [pid 540] close(3 [pid 537] +++ exited with 0 +++ [pid 535] +++ exited with 0 +++ [pid 305] <... openat resumed>) = 3 [pid 542] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 305] ioctl(3, LOOP_CLR_FD [pid 540] <... close resumed>) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=535, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 543] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 540] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... ioctl resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 543] memfd_create("syzkaller", 0 [pid 542] <... clone3 resumed> => {parent_tid=[544]}, 88) = 544 [pid 540] <... futex resumed>) = 1 [pid 539] <... futex resumed>) = 0 [pid 305] close(3 [pid 543] <... memfd_create resumed>) = 3 [pid 542] rt_sigprocmask(SIG_SETMASK, [], [pid 540] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 539] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... close resumed>) = 0 [pid 543] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 542] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 540] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 539] <... futex resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 543] <... mmap resumed>) = 0x7fe6f03b1000 [pid 542] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 540] chdir("./file0" [pid 539] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 542] <... futex resumed>) = 0 [pid 542] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 540] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 540] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 545 [pid 540] <... futex resumed>) = 1 [pid 539] <... futex resumed>) = 0 [pid 540] creat("./bus", 000 [pid 539] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 540] <... creat resumed>) = 3 [pid 539] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 540] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 539] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 540] <... futex resumed>) = 0 [pid 539] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 540] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 539] <... futex resumed>) = 0 [pid 539] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 540] <... openat resumed>) = 4 [pid 540] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 544 attached ) = 1 [pid 539] <... futex resumed>) = 0 [pid 540] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 539] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... restart_syscall resumed>) = 0 [pid 540] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 539] <... futex resumed>) = 0 [pid 540] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 539] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 302] ioctl(3, LOOP_CLR_FD) = 0 [pid 302] close(3) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 546 [pid 544] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 544] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 544] memfd_create("syzkaller", 0) = 3 [pid 544] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 543] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 544] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 540] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 540] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 539] <... futex resumed>) = 0 [pid 540] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 539] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 540] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 539] <... futex resumed>) = 0 [pid 540] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 539] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 540] <... open resumed>) = 5 [pid 540] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 539] <... futex resumed>) = 0 [pid 540] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 539] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 539] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 540] <... mmap resumed>) = 0x20000000 [pid 540] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 539] <... futex resumed>) = 0 [pid 543] <... write resumed>) = 262144 [pid 540] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 539] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 540] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 539] <... futex resumed>) = 0 [pid 543] munmap(0x7fe6f03b1000, 138412032 [pid 540] memfd_create("syzkaller", 0 [pid 539] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 540] <... memfd_create resumed>) = 6 [pid 543] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 545 attached [pid 543] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 540] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 545] set_robust_list(0x5555636e06a0, 24 [pid 540] <... mmap resumed>) = 0x7fe6f03b1000 [pid 543] <... openat resumed>) = 4 ./strace-static-x86_64: Process 546 attached [pid 546] set_robust_list(0x5555636e06a0, 24) = 0 [pid 546] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 546] setpgid(0, 0) = 0 [pid 546] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 545] <... set_robust_list resumed>) = 0 [pid 543] ioctl(4, LOOP_SET_FD, 3 [pid 540] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 546] write(3, "1000", 4) = 4 [pid 544] munmap(0x7fe6f03b1000, 138412032 [pid 546] close(3 [pid 544] <... munmap resumed>) = 0 [pid 540] <... write resumed>) = 131072 [pid 545] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 543] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 540] munmap(0x7fe6f03b1000, 138412032 [pid 546] <... close resumed>) = 0 [pid 545] <... prctl resumed>) = 0 [pid 543] ioctl(4, LOOP_CLR_FD [pid 540] <... munmap resumed>) = 0 executing program [pid 546] write(1, "executing program\n", 18 [pid 545] setpgid(0, 0 [pid 544] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 543] <... ioctl resumed>) = 0 [pid 540] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 546] <... write resumed>) = 18 [pid 545] <... setpgid resumed>) = 0 [pid 544] <... openat resumed>) = 4 [pid 540] <... openat resumed>) = 7 [pid 546] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 545] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 544] ioctl(4, LOOP_SET_FD, 3 [pid 540] ioctl(7, LOOP_SET_FD, 6 [pid 546] <... futex resumed>) = 0 [pid 545] <... openat resumed>) = 3 [pid 544] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 540] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 546] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 545] write(3, "1000", 4 [pid 544] ioctl(4, LOOP_CLR_FD [pid 540] ioctl(7, LOOP_CLR_FD [pid 546] <... rt_sigaction resumed>NULL, 8) = 0 [pid 545] <... write resumed>) = 4 [pid 544] <... ioctl resumed>) = 0 [pid 540] <... ioctl resumed>) = 0 [pid 546] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 545] close(3 [pid 543] ioctl(4, LOOP_SET_FD, 3 [pid 546] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 545] <... close resumed>) = 0 [pid 543] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 545] write(1, "executing program\n", 18 [pid 546] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0executing program ) = 0x7fe6f87b1000 [pid 546] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 545] <... write resumed>) = 18 [pid 544] ioctl(4, LOOP_SET_FD, 3 [pid 543] close(4 [pid 540] ioctl(7, LOOP_SET_FD, 6 [pid 546] <... mprotect resumed>) = 0 [pid 545] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 544] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 543] <... close resumed>) = 0 [pid 540] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 546] rt_sigprocmask(SIG_BLOCK, ~[], [pid 545] <... futex resumed>) = 0 [pid 544] close(4 [pid 543] close(3 [pid 540] close(7 [pid 546] <... rt_sigprocmask resumed>[], 8) = 0 [pid 545] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 544] <... close resumed>) = 0 [pid 540] <... close resumed>) = 0 [pid 546] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 545] <... rt_sigaction resumed>NULL, 8) = 0 [pid 544] close(3 [pid 540] close(6 [pid 545] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 544] <... close resumed>) = 0 [pid 543] <... close resumed>) = 0 [pid 540] <... close resumed>) = 0 [pid 545] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 543] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 545] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 540] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 545] <... mmap resumed>) = 0x7fe6f87b1000 [pid 546] <... clone3 resumed> => {parent_tid=[547]}, 88) = 547 [pid 544] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 545] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 543] <... futex resumed>) = 1 [pid 541] <... futex resumed>) = 0 [pid 540] <... futex resumed>) = 1 [pid 539] <... futex resumed>) = 0 [pid 546] rt_sigprocmask(SIG_SETMASK, [], [pid 545] <... mprotect resumed>) = 0 [pid 544] <... futex resumed>) = 1 [pid 543] chdir("./file0" [pid 542] <... futex resumed>) = 0 [pid 541] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 540] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 539] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 546] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 545] rt_sigprocmask(SIG_BLOCK, ~[], [pid 544] chdir("./file0" [pid 543] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 542] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 541] <... futex resumed>) = 0 [pid 540] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 539] <... futex resumed>) = 0 [pid 546] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 545] <... rt_sigprocmask resumed>[], 8) = 0 [pid 544] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 543] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 542] <... futex resumed>) = 0 [pid 541] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 540] mknod(0x20000000, 000 [pid 539] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 546] <... futex resumed>) = 0 [pid 545] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 544] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 543] <... futex resumed>) = 0 [pid 542] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 541] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 540] <... mknod resumed>) = -1 EEXIST (File exists) [pid 546] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 544] <... futex resumed>) = 0 [pid 543] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 542] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 541] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 540] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 545] <... clone3 resumed> => {parent_tid=[548]}, 88) = 548 [pid 544] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 543] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 542] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 541] <... futex resumed>) = 0 [pid 540] <... futex resumed>) = 1 [pid 539] <... futex resumed>) = 0 [pid 545] rt_sigprocmask(SIG_SETMASK, [], [pid 544] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 543] creat("./bus", 000 [pid 542] <... futex resumed>) = 0 [pid 541] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 540] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 539] exit_group(0 [pid 545] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 544] creat("./bus", 000 [pid 543] <... creat resumed>) = 3 [pid 542] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 540] <... futex resumed>) = ? [pid 539] <... exit_group resumed>) = ? [pid 545] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 544] <... creat resumed>) = 3 [pid 543] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 540] +++ exited with 0 +++ [pid 539] +++ exited with 0 +++ [pid 545] <... futex resumed>) = 0 [pid 544] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 543] <... futex resumed>) = 1 [pid 541] <... futex resumed>) = 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=539, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 545] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 544] <... futex resumed>) = 1 [pid 543] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 542] <... futex resumed>) = 0 [pid 541] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 547 attached [pid 544] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 543] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 542] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 541] <... futex resumed>) = 0 [pid 547] set_robust_list(0x7fe6f87d19a0, 24 [pid 544] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 543] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 542] <... futex resumed>) = 0 [pid 541] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 547] <... set_robust_list resumed>) = 0 [pid 544] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 543] <... openat resumed>) = 4 [pid 542] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 547] rt_sigprocmask(SIG_SETMASK, [], [pid 544] <... openat resumed>) = 4 [pid 543] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 547] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 544] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 547] memfd_create("syzkaller", 0 [pid 544] <... futex resumed>) = 1 [pid 543] <... futex resumed>) = 1 [pid 542] <... futex resumed>) = 0 [pid 541] <... futex resumed>) = 0 [pid 547] <... memfd_create resumed>) = 3 [pid 544] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 543] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 542] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 541] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 547] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 544] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 543] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 542] <... futex resumed>) = 0 [pid 541] <... futex resumed>) = 0 [pid 547] <... mmap resumed>) = 0x7fe6f03b1000 [pid 544] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 543] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 542] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 541] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... restart_syscall resumed>) = 0 [pid 547] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 544] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 543] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 547] <... write resumed>) = 262144 [pid 544] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 543] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 544] <... futex resumed>) = 1 [pid 543] <... futex resumed>) = 1 [pid 542] <... futex resumed>) = 0 [pid 541] <... futex resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 544] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 543] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 542] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 541] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... openat resumed>) = 3 [pid 544] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 543] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 542] <... futex resumed>) = 0 [pid 541] <... futex resumed>) = 0 [pid 303] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 548 attached [pid 544] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 543] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 542] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 541] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... ioctl resumed>) = 0 [pid 548] set_robust_list(0x7fe6f87d19a0, 24 [pid 547] munmap(0x7fe6f03b1000, 138412032 [pid 544] <... open resumed>) = 5 [pid 543] <... open resumed>) = 5 [pid 303] close(3 [pid 548] <... set_robust_list resumed>) = 0 [pid 547] <... munmap resumed>) = 0 [pid 544] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 543] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... close resumed>) = 0 [pid 547] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 544] <... futex resumed>) = 1 [pid 543] <... futex resumed>) = 1 [pid 542] <... futex resumed>) = 0 [pid 541] <... futex resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 548] rt_sigprocmask(SIG_SETMASK, [], [pid 547] <... openat resumed>) = 4 [pid 544] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 543] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 542] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 541] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 548] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 547] ioctl(4, LOOP_SET_FD, 3 [pid 544] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 543] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 542] <... futex resumed>) = 0 [pid 541] <... futex resumed>) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 550 [pid 548] memfd_create("syzkaller", 0 [pid 547] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 544] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 543] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 542] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 541] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 548] <... memfd_create resumed>) = 3 [pid 547] ioctl(4, LOOP_CLR_FD [pid 544] <... mmap resumed>) = 0x20000000 [pid 543] <... mmap resumed>) = 0x20000000 [pid 548] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 547] <... ioctl resumed>) = 0 [pid 544] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 543] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 548] <... mmap resumed>) = 0x7fe6f03b1000 [pid 544] <... futex resumed>) = 1 [pid 543] <... futex resumed>) = 1 [pid 542] <... futex resumed>) = 0 [pid 541] <... futex resumed>) = 0 [pid 544] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 543] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 542] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 541] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 544] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 543] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 542] <... futex resumed>) = 0 [pid 541] <... futex resumed>) = 0 [pid 544] memfd_create("syzkaller", 0 [pid 543] memfd_create("syzkaller", 0 [pid 542] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 541] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 544] <... memfd_create resumed>) = 6 [pid 543] <... memfd_create resumed>) = 6 [pid 547] ioctl(4, LOOP_SET_FD, 3 [pid 544] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 543] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 547] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 544] <... mmap resumed>) = 0x7fe6f03b1000 [pid 548] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 547] close(4 [pid 544] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 543] <... mmap resumed>) = 0x7fe6f03b1000 [pid 547] <... close resumed>) = 0 [pid 544] <... write resumed>) = 131072 [pid 547] close(3 [pid 544] munmap(0x7fe6f03b1000, 138412032./strace-static-x86_64: Process 550 attached [pid 547] <... close resumed>) = 0 [pid 544] <... munmap resumed>) = 0 [pid 550] set_robust_list(0x5555636e06a0, 24 [pid 547] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 544] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 550] <... set_robust_list resumed>) = 0 [pid 547] <... futex resumed>) = 1 [pid 546] <... futex resumed>) = 0 [pid 544] <... openat resumed>) = 7 [pid 543] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 550] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 547] chdir("./file0" [pid 546] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 544] ioctl(7, LOOP_SET_FD, 6 [pid 550] <... prctl resumed>) = 0 [pid 547] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 546] <... futex resumed>) = 0 [pid 544] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 550] setpgid(0, 0 [pid 547] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 546] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 544] ioctl(7, LOOP_CLR_FD [pid 543] <... write resumed>) = 131072 [pid 550] <... setpgid resumed>) = 0 [pid 547] <... futex resumed>) = 0 [pid 546] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 544] <... ioctl resumed>) = 0 [pid 543] munmap(0x7fe6f03b1000, 138412032 [pid 550] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 547] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 546] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 550] <... openat resumed>) = 3 [pid 548] <... write resumed>) = 262144 [pid 547] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 546] <... futex resumed>) = 0 [pid 543] <... munmap resumed>) = 0 [pid 550] write(3, "1000", 4 [pid 548] munmap(0x7fe6f03b1000, 138412032 [pid 547] creat("./bus", 000 [pid 546] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 543] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 550] <... write resumed>) = 4 [pid 547] <... creat resumed>) = 3 [pid 550] close(3 [pid 548] <... munmap resumed>) = 0 [pid 547] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 543] <... openat resumed>) = 7 [pid 550] <... close resumed>) = 0 [pid 547] <... futex resumed>) = 1 executing program [pid 546] <... futex resumed>) = 0 [pid 543] ioctl(7, LOOP_SET_FD, 6 [pid 548] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 550] write(1, "executing program\n", 18 [pid 547] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 546] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 544] ioctl(7, LOOP_SET_FD, 6 [pid 543] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 550] <... write resumed>) = 18 [pid 548] <... openat resumed>) = 4 [pid 547] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 546] <... futex resumed>) = 0 [pid 544] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 543] ioctl(7, LOOP_CLR_FD [pid 550] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 548] ioctl(4, LOOP_SET_FD, 3 [pid 547] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 546] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 544] close(7 [pid 543] <... ioctl resumed>) = 0 [pid 550] <... futex resumed>) = 0 [pid 548] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 547] <... openat resumed>) = 4 [pid 544] <... close resumed>) = 0 [pid 550] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 548] ioctl(4, LOOP_CLR_FD [pid 547] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 544] close(6 [pid 550] <... rt_sigaction resumed>NULL, 8) = 0 [pid 548] <... ioctl resumed>) = 0 [pid 547] <... futex resumed>) = 1 [pid 546] <... futex resumed>) = 0 [pid 544] <... close resumed>) = 0 [pid 543] ioctl(7, LOOP_SET_FD, 6 [pid 550] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 547] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 546] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 544] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 543] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 550] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 547] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 546] <... futex resumed>) = 0 [pid 544] <... futex resumed>) = 1 [pid 542] <... futex resumed>) = 0 [pid 550] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 547] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 546] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 544] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 543] close(7 [pid 542] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 550] <... mmap resumed>) = 0x7fe6f87b1000 [pid 547] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 544] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 543] <... close resumed>) = 0 [pid 542] <... futex resumed>) = 0 [pid 550] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 548] ioctl(4, LOOP_SET_FD, 3 [pid 547] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 544] mknod(0x20000000, 000 [pid 543] close(6 [pid 542] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 550] <... mprotect resumed>) = 0 [pid 548] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 547] <... futex resumed>) = 1 [pid 546] <... futex resumed>) = 0 [pid 544] <... mknod resumed>) = -1 EEXIST (File exists) [pid 550] rt_sigprocmask(SIG_BLOCK, ~[], [pid 548] close(4 [pid 547] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 546] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 544] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 543] <... close resumed>) = 0 [pid 550] <... rt_sigprocmask resumed>[], 8) = 0 [pid 548] <... close resumed>) = 0 [pid 547] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 546] <... futex resumed>) = 0 [pid 544] <... futex resumed>) = 1 [pid 543] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 542] <... futex resumed>) = 0 [pid 550] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 548] close(3 [pid 547] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 546] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 544] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 543] <... futex resumed>) = 1 [pid 542] exit_group(0 [pid 541] <... futex resumed>) = 0 [pid 548] <... close resumed>) = 0 [pid 547] <... open resumed>) = 5 [pid 544] <... futex resumed>) = ? [pid 543] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 542] <... exit_group resumed>) = ? [pid 541] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 550] <... clone3 resumed> => {parent_tid=[551]}, 88) = 551 [pid 548] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 547] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 544] +++ exited with 0 +++ [pid 543] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 542] +++ exited with 0 +++ [pid 541] <... futex resumed>) = 0 [pid 550] rt_sigprocmask(SIG_SETMASK, [], [pid 548] <... futex resumed>) = 1 [pid 547] <... futex resumed>) = 1 [pid 546] <... futex resumed>) = 0 [pid 545] <... futex resumed>) = 0 [pid 543] mknod(0x20000000, 000 [pid 541] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 550] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 548] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 547] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 546] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 545] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 543] <... mknod resumed>) = -1 EEXIST (File exists) [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=542, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 550] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 548] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 547] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 546] <... futex resumed>) = 0 [pid 545] <... futex resumed>) = 0 [pid 543] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 550] <... futex resumed>) = 0 [pid 548] chdir("./file0" [pid 547] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 546] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 545] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 543] <... futex resumed>) = 1 [pid 541] <... futex resumed>) = 0 [pid 304] <... openat resumed>) = 3 [pid 550] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 548] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 547] <... mmap resumed>) = 0x20000000 [pid 543] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 541] exit_group(0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 548] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 547] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 543] <... futex resumed>) = ? [pid 541] <... exit_group resumed>) = ? [pid 304] <... ioctl resumed>) = 0 [pid 548] <... futex resumed>) = 1 [pid 547] <... futex resumed>) = 1 [pid 546] <... futex resumed>) = 0 [pid 545] <... futex resumed>) = 0 [pid 543] +++ exited with 0 +++ [pid 304] close(3./strace-static-x86_64: Process 551 attached [pid 547] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 546] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... close resumed>) = 0 [pid 551] set_robust_list(0x7fe6f87d19a0, 24 [pid 548] creat("./bus", 000 [pid 547] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 546] <... futex resumed>) = 0 [pid 545] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 541] +++ exited with 0 +++ [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 551] <... set_robust_list resumed>) = 0 [pid 548] <... creat resumed>) = 3 [pid 547] memfd_create("syzkaller", 0 [pid 546] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 545] <... futex resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=541, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 551] rt_sigprocmask(SIG_SETMASK, [], [pid 548] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 547] <... memfd_create resumed>) = 6 [pid 545] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 552 [pid 551] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 548] <... futex resumed>) = 0 [pid 547] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 545] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 551] memfd_create("syzkaller", 0 [pid 548] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 547] <... mmap resumed>) = 0x7fe6f03b1000 [pid 545] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 551] <... memfd_create resumed>) = 3 [pid 548] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 547] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 545] <... futex resumed>) = 0 [pid 551] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 548] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 547] <... write resumed>) = 131072 [pid 545] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 551] <... mmap resumed>) = 0x7fe6f03b1000 [pid 548] <... openat resumed>) = 4 [pid 547] munmap(0x7fe6f03b1000, 138412032 [pid 551] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 548] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 547] <... munmap resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 548] <... futex resumed>) = 1 [pid 547] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 545] <... futex resumed>) = 0 [pid 551] <... write resumed>) = 262144 [pid 548] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 547] <... openat resumed>) = 7 [pid 545] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 548] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 547] ioctl(7, LOOP_SET_FD, 6 [pid 545] <... futex resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR./strace-static-x86_64: Process 552 attached [pid 548] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 547] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 545] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... openat resumed>) = 3 [pid 552] set_robust_list(0x5555636e06a0, 24 [pid 548] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 547] ioctl(7, LOOP_CLR_FD [pid 306] ioctl(3, LOOP_CLR_FD [pid 552] <... set_robust_list resumed>) = 0 [pid 548] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 547] <... ioctl resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 552] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 551] munmap(0x7fe6f03b1000, 138412032 [pid 548] <... futex resumed>) = 1 [pid 545] <... futex resumed>) = 0 [pid 306] close(3 [pid 552] <... prctl resumed>) = 0 [pid 551] <... munmap resumed>) = 0 [pid 548] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 545] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... close resumed>) = 0 [pid 551] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 548] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 545] <... futex resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 551] <... openat resumed>) = 4 [pid 548] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 547] ioctl(7, LOOP_SET_FD, 6 [pid 545] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 552] setpgid(0, 0 [pid 551] ioctl(4, LOOP_SET_FD, 3 [pid 548] <... open resumed>) = 5 [pid 547] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 553 [pid 552] <... setpgid resumed>) = 0 [pid 551] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 548] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 547] close(7 [pid 552] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 551] ioctl(4, LOOP_CLR_FD [pid 548] <... futex resumed>) = 1 [pid 547] <... close resumed>) = 0 [pid 545] <... futex resumed>) = 0 [pid 552] <... openat resumed>) = 3 [pid 551] <... ioctl resumed>) = 0 [pid 548] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 547] close(6 [pid 545] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 552] write(3, "1000", 4 [pid 548] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 547] <... close resumed>) = 0 [pid 545] <... futex resumed>) = 0 [pid 552] <... write resumed>) = 4 [pid 548] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 547] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 545] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 552] close(3 [pid 548] <... mmap resumed>) = 0x20000000 [pid 547] <... futex resumed>) = 1 [pid 546] <... futex resumed>) = 0 [pid 552] <... close resumed>) = 0 [pid 551] ioctl(4, LOOP_SET_FD, 3 [pid 548] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 547] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 546] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 552] write(1, "executing program\n", 18 [pid 551] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 548] <... futex resumed>) = 1 [pid 547] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 546] <... futex resumed>) = 0 [pid 545] <... futex resumed>) = 0 [pid 552] <... write resumed>) = 18 [pid 551] close(4 [pid 548] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 547] mknod(0x20000000, 000 [pid 546] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 545] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 552] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 551] <... close resumed>) = 0 [pid 548] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 547] <... mknod resumed>) = -1 EEXIST (File exists) [pid 545] <... futex resumed>) = 0 [pid 552] <... futex resumed>) = 0 [pid 551] close(3 [pid 548] memfd_create("syzkaller", 0 [pid 547] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 545] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 553 attached [pid 552] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 551] <... close resumed>) = 0 [pid 548] <... memfd_create resumed>) = 6 [pid 547] <... futex resumed>) = 1 [pid 546] <... futex resumed>) = 0 [pid 553] set_robust_list(0x5555636e06a0, 24 [pid 552] <... rt_sigaction resumed>NULL, 8) = 0 [pid 551] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 548] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 547] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 546] exit_group(0 [pid 553] <... set_robust_list resumed>) = 0 [pid 552] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 551] <... futex resumed>) = 1 [pid 550] <... futex resumed>) = 0 [pid 548] <... mmap resumed>) = 0x7fe6f03b1000 [pid 547] <... futex resumed>) = ? [pid 546] <... exit_group resumed>) = ? [pid 553] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 552] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 551] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 550] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 547] +++ exited with 0 +++ [pid 546] +++ exited with 0 +++ [pid 553] <... prctl resumed>) = 0 [pid 552] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 551] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 550] <... futex resumed>) = 0 [pid 548] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=546, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 553] setpgid(0, 0 [pid 552] <... mmap resumed>) = 0x7fe6f87b1000 [pid 551] chdir("./file0" [pid 550] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 553] <... setpgid resumed>) = 0 [pid 551] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 553] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 552] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 551] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 548] <... write resumed>) = 131072 [pid 553] <... openat resumed>) = 3 [pid 552] <... mprotect resumed>) = 0 [pid 551] <... futex resumed>) = 1 [pid 550] <... futex resumed>) = 0 [pid 548] munmap(0x7fe6f03b1000, 138412032 [pid 553] write(3, "1000", 4 [pid 552] rt_sigprocmask(SIG_BLOCK, ~[], [pid 551] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 550] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 553] <... write resumed>) = 4 [pid 552] <... rt_sigprocmask resumed>[], 8) = 0 [pid 551] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 550] <... futex resumed>) = 0 [pid 548] <... munmap resumed>) = 0 [pid 553] close(3 [pid 552] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 551] creat("./bus", 000executing program [pid 550] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 548] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 553] <... close resumed>) = 0 [pid 551] <... creat resumed>) = 3 [pid 553] write(1, "executing program\n", 18 [pid 552] <... clone3 resumed> => {parent_tid=[554]}, 88) = 554 [pid 551] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 548] <... openat resumed>) = 7 ./strace-static-x86_64: Process 554 attached [pid 553] <... write resumed>) = 18 [pid 552] rt_sigprocmask(SIG_SETMASK, [], [pid 551] <... futex resumed>) = 1 [pid 550] <... futex resumed>) = 0 [pid 553] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 552] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 551] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 550] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 548] ioctl(7, LOOP_SET_FD, 6 [pid 553] <... futex resumed>) = 0 [pid 552] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 551] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 550] <... futex resumed>) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 553] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 551] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 550] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 553] <... rt_sigaction resumed>NULL, 8) = 0 [pid 551] <... openat resumed>) = 4 [pid 553] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 551] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 553] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 551] <... futex resumed>) = 1 [pid 550] <... futex resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 553] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 551] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 550] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] ioctl(3, LOOP_CLR_FD [pid 553] <... mmap resumed>) = 0x7fe6f87b1000 [pid 551] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 550] <... futex resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 553] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 551] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 550] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] close(3 [pid 553] <... mprotect resumed>) = 0 [pid 551] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 302] <... close resumed>) = 0 [pid 553] rt_sigprocmask(SIG_BLOCK, ~[], [pid 551] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 553] <... rt_sigprocmask resumed>[], 8) = 0 [pid 551] <... futex resumed>) = 1 [pid 550] <... futex resumed>) = 0 [pid 553] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 551] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 550] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 555 [pid 552] <... futex resumed>) = 0 [pid 551] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 550] <... futex resumed>) = 0 [pid 548] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 553] <... clone3 resumed> => {parent_tid=[556]}, 88) = 556 [pid 552] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 551] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 550] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 548] ioctl(7, LOOP_CLR_FD [pid 553] rt_sigprocmask(SIG_SETMASK, [], [pid 551] <... open resumed>) = 5 [pid 553] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 551] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 548] <... ioctl resumed>) = 0 [pid 553] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 551] <... futex resumed>) = 1 [pid 550] <... futex resumed>) = 0 [pid 553] <... futex resumed>) = 0 [pid 551] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 550] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 553] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 551] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 550] <... futex resumed>) = 0 [pid 551] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 550] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 551] <... mmap resumed>) = 0x20000000 [pid 551] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 550] <... futex resumed>) = 0 [pid 551] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 550] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 551] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 550] <... futex resumed>) = 0 [pid 551] memfd_create("syzkaller", 0 [pid 550] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 548] ioctl(7, LOOP_SET_FD, 6 [pid 551] <... memfd_create resumed>) = 6 [pid 548] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 551] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 548] close(7 [pid 551] <... mmap resumed>) = 0x7fe6f03b1000 [pid 551] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 548] <... close resumed>) = 0 [pid 551] <... write resumed>) = 131072 [pid 548] close(6 [pid 551] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 551] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 548] <... close resumed>) = 0 [pid 551] <... openat resumed>) = 7 [pid 548] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 551] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 548] <... futex resumed>) = 1 [pid 545] <... futex resumed>) = 0 [pid 551] ioctl(7, LOOP_CLR_FD) = 0 [pid 548] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 545] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 548] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 545] <... futex resumed>) = 0 ./strace-static-x86_64: Process 556 attached [pid 548] mknod(0x20000000, 000 [pid 545] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 548] <... mknod resumed>) = -1 EEXIST (File exists) ./strace-static-x86_64: Process 555 attached [pid 556] set_robust_list(0x7fe6f87d19a0, 24 [pid 548] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 556] <... set_robust_list resumed>) = 0 [pid 555] set_robust_list(0x5555636e06a0, 24 [pid 548] <... futex resumed>) = 1 [pid 545] <... futex resumed>) = 0 [pid 556] rt_sigprocmask(SIG_SETMASK, [], [pid 555] <... set_robust_list resumed>) = 0 [pid 551] ioctl(7, LOOP_SET_FD, 6 [pid 548] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 545] exit_group(0 [pid 556] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 555] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 551] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 548] <... futex resumed>) = ? [pid 545] <... exit_group resumed>) = ? [pid 556] memfd_create("syzkaller", 0 [pid 555] <... prctl resumed>) = 0 [pid 551] close(7 [pid 548] +++ exited with 0 +++ [pid 556] <... memfd_create resumed>) = 3 [pid 555] setpgid(0, 0 [pid 551] <... close resumed>) = 0 [pid 556] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 555] <... setpgid resumed>) = 0 [pid 551] close(6 [pid 545] +++ exited with 0 +++ [pid 556] <... mmap resumed>) = 0x7fe6f03b1000 [pid 555] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 551] <... close resumed>) = 0 [pid 556] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 555] <... openat resumed>) = 3 [pid 551] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=545, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- [pid 556] <... write resumed>) = 262144 [pid 555] write(3, "1000", 4 [pid 551] <... futex resumed>) = 1 [pid 550] <... futex resumed>) = 0 [pid 555] <... write resumed>) = 4 [pid 551] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 550] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 555] close(3 [pid 554] set_robust_list(0x7fe6f87d19a0, 24 [pid 551] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 550] <... futex resumed>) = 0 [pid 555] <... close resumed>) = 0 [pid 551] mknod(0x20000000, 000 [pid 550] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... openat resumed>) = 3 executing program [pid 555] write(1, "executing program\n", 18 [pid 554] <... set_robust_list resumed>) = 0 [pid 551] <... mknod resumed>) = -1 EEXIST (File exists) [pid 305] ioctl(3, LOOP_CLR_FD [pid 556] munmap(0x7fe6f03b1000, 138412032 [pid 555] <... write resumed>) = 18 [pid 551] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... ioctl resumed>) = 0 [pid 556] <... munmap resumed>) = 0 [pid 555] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] rt_sigprocmask(SIG_SETMASK, [], [pid 551] <... futex resumed>) = 1 [pid 550] <... futex resumed>) = 0 [pid 305] close(3 [pid 556] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 555] <... futex resumed>) = 0 [pid 551] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 550] exit_group(0 [pid 556] <... openat resumed>) = 4 [pid 555] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 554] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 551] <... futex resumed>) = ? [pid 550] <... exit_group resumed>) = ? [pid 305] <... close resumed>) = 0 [pid 556] ioctl(4, LOOP_SET_FD, 3 [pid 555] <... rt_sigaction resumed>NULL, 8) = 0 [pid 551] +++ exited with 0 +++ [pid 550] +++ exited with 0 +++ [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 556] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 555] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=550, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 556] ioctl(4, LOOP_CLR_FD [pid 555] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 556] <... ioctl resumed>) = 0 [pid 555] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 554] memfd_create("syzkaller", 0 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 557 [pid 555] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 554] <... memfd_create resumed>) = 3 [pid 555] <... mprotect resumed>) = 0 [pid 554] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 555] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 555] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 556] ioctl(4, LOOP_SET_FD, 3 [pid 555] <... clone3 resumed> => {parent_tid=[558]}, 88) = 558 [pid 556] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 555] rt_sigprocmask(SIG_SETMASK, [], [pid 556] close(4 [pid 555] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 554] <... mmap resumed>) = 0x7fe6f03b1000 [pid 556] <... close resumed>) = 0 [pid 555] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 556] close(3 [pid 555] <... futex resumed>) = 0 [pid 556] <... close resumed>) = 0 [pid 555] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 556] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 553] <... futex resumed>) = 0 [pid 556] chdir("./file0" [pid 553] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 556] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 553] <... futex resumed>) = 0 [pid 556] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 553] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 556] <... futex resumed>) = 0 [pid 553] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 556] creat("./bus", 000 [pid 554] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 553] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 556] <... creat resumed>) = 3 [pid 553] <... futex resumed>) = 0 [pid 556] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 553] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 557 attached [pid 556] <... futex resumed>) = 0 [pid 553] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 557] set_robust_list(0x5555636e06a0, 24 [pid 556] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 553] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... restart_syscall resumed>) = 0 [pid 557] <... set_robust_list resumed>) = 0 [pid 556] <... openat resumed>) = 4 [pid 553] <... futex resumed>) = 0 [pid 557] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 556] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 553] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 557] <... prctl resumed>) = 0 [pid 556] <... futex resumed>) = 0 [pid 553] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 557] setpgid(0, 0 [pid 556] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 553] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... openat resumed>) = 3 [pid 557] <... setpgid resumed>) = 0 [pid 553] <... futex resumed>) = 0 [pid 303] ioctl(3, LOOP_CLR_FD [pid 557] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 553] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... ioctl resumed>) = 0 [pid 557] <... openat resumed>) = 3 [pid 303] close(3 [pid 557] write(3, "1000", 4 [pid 556] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 303] <... close resumed>) = 0 [pid 557] <... write resumed>) = 4 [pid 556] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 557] close(3 [pid 556] <... futex resumed>) = 1 [pid 553] <... futex resumed>) = 0 ./strace-static-x86_64: Process 558 attached [pid 557] <... close resumed>) = 0 [pid 556] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 553] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 559 [pid 558] set_robust_list(0x7fe6f87d19a0, 24 [pid 557] write(1, "executing program\n", 18 [pid 556] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 553] <... futex resumed>) = 0 [pid 558] <... set_robust_list resumed>) = 0 [pid 557] <... write resumed>) = 18 [pid 556] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 553] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 558] rt_sigprocmask(SIG_SETMASK, [], [pid 557] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 556] <... open resumed>) = 5 [pid 558] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 557] <... futex resumed>) = 0 [pid 556] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] <... write resumed>) = 262144 [pid 558] memfd_create("syzkaller", 0 [pid 557] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 556] <... futex resumed>) = 1 [pid 554] munmap(0x7fe6f03b1000, 138412032 [pid 553] <... futex resumed>) = 0 [pid 558] <... memfd_create resumed>) = 3 [pid 557] <... rt_sigaction resumed>NULL, 8) = 0 [pid 556] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 554] <... munmap resumed>) = 0 [pid 553] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 558] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 557] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 556] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 553] <... futex resumed>) = 0 [pid 558] <... mmap resumed>) = 0x7fe6f03b1000 [pid 557] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 556] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 553] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 558] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 557] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 556] <... mmap resumed>) = 0x20000000 [pid 554] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 557] <... mmap resumed>) = 0x7fe6f87b1000 [pid 556] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 557] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 556] <... futex resumed>) = 1 [pid 553] <... futex resumed>) = 0 [pid 557] <... mprotect resumed>) = 0 [pid 556] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 553] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 557] rt_sigprocmask(SIG_BLOCK, ~[], [pid 556] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 554] <... openat resumed>) = 4 [pid 553] <... futex resumed>) = 0 [pid 558] <... write resumed>) = 262144 [pid 557] <... rt_sigprocmask resumed>[], 8) = 0 [pid 556] memfd_create("syzkaller", 0 [pid 553] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 557] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 556] <... memfd_create resumed>) = 6 [pid 554] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 559 attached [pid 556] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 559] set_robust_list(0x5555636e06a0, 24 [pid 557] <... clone3 resumed> => {parent_tid=[560]}, 88) = 560 [pid 556] <... mmap resumed>) = 0x7fe6f03b1000 [pid 559] <... set_robust_list resumed>) = 0 [pid 557] rt_sigprocmask(SIG_SETMASK, [], [pid 556] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 559] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 557] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 556] <... write resumed>) = 131072 [pid 559] <... prctl resumed>) = 0 [pid 557] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 556] munmap(0x7fe6f03b1000, 138412032 [pid 559] setpgid(0, 0 [pid 558] munmap(0x7fe6f03b1000, 138412032 [pid 557] <... futex resumed>) = 0 [pid 556] <... munmap resumed>) = 0 [pid 554] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 559] <... setpgid resumed>) = 0 [pid 558] <... munmap resumed>) = 0 [pid 557] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 556] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 559] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 558] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 556] <... openat resumed>) = 7 [pid 559] <... openat resumed>) = 3 [pid 558] <... openat resumed>) = 4 [pid 556] ioctl(7, LOOP_SET_FD, 6 [pid 559] write(3, "1000", 4 [pid 558] ioctl(4, LOOP_SET_FD, 3 [pid 556] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 559] <... write resumed>) = 4 [pid 558] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 556] ioctl(7, LOOP_CLR_FD [pid 559] close(3 [pid 558] ioctl(4, LOOP_CLR_FD [pid 556] <... ioctl resumed>) = 0 [pid 559] <... close resumed>) = 0 [pid 558] <... ioctl resumed>) = 0 executing program [pid 554] ioctl(4, LOOP_CLR_FD [pid 559] write(1, "executing program\n", 18 [pid 554] <... ioctl resumed>) = 0 [pid 559] <... write resumed>) = 18 [pid 559] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 559] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 556] ioctl(7, LOOP_SET_FD, 6 [pid 559] <... rt_sigaction resumed>NULL, 8) = 0 [pid 556] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 559] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 558] ioctl(4, LOOP_SET_FD, 3 [pid 556] close(7 [pid 559] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 558] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 556] <... close resumed>) = 0 [pid 554] ioctl(4, LOOP_SET_FD, 3 [pid 559] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 558] close(4 [pid 556] close(6 [pid 554] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 559] <... mmap resumed>) = 0x7fe6f87b1000 [pid 558] <... close resumed>) = 0 [pid 556] <... close resumed>) = 0 [pid 554] close(4 [pid 559] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 558] close(3 [pid 556] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] <... close resumed>) = 0 [pid 559] <... mprotect resumed>) = 0 [pid 558] <... close resumed>) = 0 [pid 556] <... futex resumed>) = 1 [pid 554] close(3 [pid 553] <... futex resumed>) = 0 [pid 559] rt_sigprocmask(SIG_BLOCK, ~[], [pid 558] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 556] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 553] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 559] <... rt_sigprocmask resumed>[], 8) = 0 [pid 558] <... futex resumed>) = 1 [pid 556] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 555] <... futex resumed>) = 0 [pid 553] <... futex resumed>) = 0 [pid 559] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 558] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 556] mknod(0x20000000, 000 [pid 555] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] <... close resumed>) = 0 [pid 553] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 560 attached [pid 558] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 556] <... mknod resumed>) = -1 EEXIST (File exists) [pid 555] <... futex resumed>) = 0 [pid 554] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 559] <... clone3 resumed> => {parent_tid=[561]}, 88) = 561 [pid 558] chdir("./file0" [pid 556] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 555] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 552] <... futex resumed>) = 0 [pid 554] <... futex resumed>) = 1 [pid 560] set_robust_list(0x7fe6f87d19a0, 24 [pid 559] rt_sigprocmask(SIG_SETMASK, [], [pid 558] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 556] <... futex resumed>) = 1 [pid 554] chdir("./file0" [pid 553] <... futex resumed>) = 0 [pid 552] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 560] <... set_robust_list resumed>) = 0 [pid 559] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 558] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 556] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 554] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 553] exit_group(0 [pid 552] <... futex resumed>) = 0 [pid 560] rt_sigprocmask(SIG_SETMASK, [], [pid 559] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 558] <... futex resumed>) = 1 [pid 556] <... futex resumed>) = ? [pid 555] <... futex resumed>) = 0 [pid 554] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 553] <... exit_group resumed>) = ? [pid 552] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 560] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 559] <... futex resumed>) = 0 [pid 558] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 556] +++ exited with 0 +++ [pid 555] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] <... futex resumed>) = 0 [pid 553] +++ exited with 0 +++ [pid 552] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 559] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 558] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 555] <... futex resumed>) = 0 [pid 554] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 552] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=553, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 560] memfd_create("syzkaller", 0 [pid 558] creat("./bus", 000 [pid 555] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 554] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 552] <... futex resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 560] <... memfd_create resumed>) = 3 [pid 558] <... creat resumed>) = 3 [pid 554] creat("./bus", 000 [pid 552] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 560] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 558] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] <... creat resumed>) = 3 [pid 560] <... mmap resumed>) = 0x7fe6f03b1000 [pid 558] <... futex resumed>) = 1 [pid 555] <... futex resumed>) = 0 [pid 554] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 558] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 555] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 558] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 555] <... futex resumed>) = 0 [pid 554] <... futex resumed>) = 1 [pid 552] <... futex resumed>) = 0 [pid 558] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 555] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 554] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 552] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 561 attached [pid 560] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 558] <... openat resumed>) = 4 [pid 554] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 552] <... futex resumed>) = 0 [pid 561] set_robust_list(0x7fe6f87d19a0, 24 [pid 558] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 552] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 561] <... set_robust_list resumed>) = 0 [pid 558] <... futex resumed>) = 1 [pid 555] <... futex resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 561] rt_sigprocmask(SIG_SETMASK, [], [pid 558] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 555] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] <... openat resumed>) = 4 [pid 306] <... openat resumed>) = 3 [pid 561] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 560] <... write resumed>) = 262144 [pid 558] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 555] <... futex resumed>) = 0 [pid 554] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] ioctl(3, LOOP_CLR_FD [pid 561] memfd_create("syzkaller", 0 [pid 558] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 555] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 554] <... futex resumed>) = 1 [pid 552] <... futex resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 561] <... memfd_create resumed>) = 3 [pid 560] munmap(0x7fe6f03b1000, 138412032 [pid 558] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 554] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 552] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] close(3 [pid 561] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 560] <... munmap resumed>) = 0 [pid 558] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 552] <... futex resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 561] <... mmap resumed>) = 0x7fe6f03b1000 [pid 560] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 558] <... futex resumed>) = 1 [pid 555] <... futex resumed>) = 0 [pid 554] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 552] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 561] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 560] <... openat resumed>) = 4 [pid 558] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 555] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 558] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 555] <... futex resumed>) = 0 [pid 554] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 562 [pid 560] ioctl(4, LOOP_SET_FD, 3 [pid 558] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 555] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 554] <... futex resumed>) = 1 [pid 552] <... futex resumed>) = 0 [pid 560] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 558] <... open resumed>) = 5 [pid 554] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 552] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 561] <... write resumed>) = 262144 [pid 560] ioctl(4, LOOP_CLR_FD [pid 558] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 552] <... futex resumed>) = 0 [pid 561] munmap(0x7fe6f03b1000, 138412032 [pid 558] <... futex resumed>) = 1 [pid 555] <... futex resumed>) = 0 [pid 560] <... ioctl resumed>) = 0 [pid 554] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 552] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 561] <... munmap resumed>) = 0 [pid 558] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 555] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] <... open resumed>) = 5 [pid 561] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 558] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 555] <... futex resumed>) = 0 [pid 561] <... openat resumed>) = 4 [pid 558] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 555] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 554] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 561] ioctl(4, LOOP_SET_FD, 3 [pid 558] <... mmap resumed>) = 0x20000000 [pid 561] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 558] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] <... futex resumed>) = 1 [pid 552] <... futex resumed>) = 0 [pid 561] ioctl(4, LOOP_CLR_FD [pid 558] <... futex resumed>) = 1 [pid 555] <... futex resumed>) = 0 [pid 554] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 552] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 561] <... ioctl resumed>) = 0 [pid 558] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 555] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 552] <... futex resumed>) = 0 [pid 560] ioctl(4, LOOP_SET_FD, 3 [pid 558] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 555] <... futex resumed>) = 0 [pid 554] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 552] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 558] memfd_create("syzkaller", 0 [pid 555] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 560] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 558] <... memfd_create resumed>) = 6 [pid 554] <... mmap resumed>) = 0x20000000 [pid 558] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 554] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 558] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 561] ioctl(4, LOOP_SET_FD, 3 [pid 558] <... write resumed>) = 131072 [pid 554] <... futex resumed>) = 1 [pid 552] <... futex resumed>) = 0 [pid 561] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 560] close(4 [pid 558] munmap(0x7fe6f03b1000, 138412032 [pid 554] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 552] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 561] close(4 [pid 560] <... close resumed>) = 0 [pid 558] <... munmap resumed>) = 0 [pid 554] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 552] <... futex resumed>) = 0 [pid 561] <... close resumed>) = 0 [pid 560] close(3 [pid 558] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 561] close(3 [pid 558] <... openat resumed>) = 7 [pid 554] memfd_create("syzkaller", 0 [pid 552] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 561] <... close resumed>) = 0 [pid 560] <... close resumed>) = 0 [pid 558] ioctl(7, LOOP_SET_FD, 6 [pid 554] <... memfd_create resumed>) = 6 [pid 561] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 558] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 554] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 561] <... futex resumed>) = 1 [pid 560] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 559] <... futex resumed>) = 0 [pid 558] ioctl(7, LOOP_CLR_FD [pid 554] <... mmap resumed>) = 0x7fe6f03b1000 [pid 561] chdir("./file0" [pid 559] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 558] <... ioctl resumed>) = 0 [pid 561] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 559] <... futex resumed>) = 0 [pid 561] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 560] <... futex resumed>) = 1 [pid 559] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 557] <... futex resumed>) = 0 [pid 554] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 561] <... futex resumed>) = 0 [pid 560] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 559] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 557] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 561] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 559] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 557] <... futex resumed>) = 0 [pid 561] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 559] <... futex resumed>) = 0 [pid 558] ioctl(7, LOOP_SET_FD, 6 [pid 557] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 554] <... write resumed>) = 131072 [pid 561] creat("./bus", 000 [pid 560] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 559] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 558] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 554] munmap(0x7fe6f03b1000, 138412032 [pid 561] <... creat resumed>) = 3 [pid 560] chdir("./file0" [pid 558] close(7 [pid 561] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 560] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 558] <... close resumed>) = 0 [pid 554] <... munmap resumed>) = 0 [pid 561] <... futex resumed>) = 1 [pid 560] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 559] <... futex resumed>) = 0 [pid 558] close(6 [pid 554] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 561] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 560] <... futex resumed>) = 1 [pid 559] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 558] <... close resumed>) = 0 [pid 557] <... futex resumed>) = 0 [pid 561] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 560] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 559] <... futex resumed>) = 0 [pid 558] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 557] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] <... openat resumed>) = 7 [pid 561] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 560] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 559] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 558] <... futex resumed>) = 1 [pid 557] <... futex resumed>) = 0 [pid 555] <... futex resumed>) = 0 [pid 561] <... openat resumed>) = 4 [pid 560] creat("./bus", 000 [pid 558] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 557] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 555] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] ioctl(7, LOOP_SET_FD, 6 [pid 561] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 560] <... creat resumed>) = 3 [pid 558] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 555] <... futex resumed>) = 0 [pid 561] <... futex resumed>) = 1 [pid 560] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 559] <... futex resumed>) = 0 [pid 558] mknod(0x20000000, 000 [pid 555] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 554] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 561] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 560] <... futex resumed>) = 1 [pid 559] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 558] <... mknod resumed>) = -1 EEXIST (File exists) [pid 557] <... futex resumed>) = 0 [pid 554] ioctl(7, LOOP_CLR_FD [pid 561] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 560] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 559] <... futex resumed>) = 0 [pid 558] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 557] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] <... ioctl resumed>) = 0 [pid 561] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 560] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 559] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 558] <... futex resumed>) = 1 [pid 557] <... futex resumed>) = 0 [pid 555] <... futex resumed>) = 0 ./strace-static-x86_64: Process 562 attached [pid 561] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 560] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 558] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 557] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 555] exit_group(0 [pid 561] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 560] <... openat resumed>) = 4 [pid 558] <... futex resumed>) = ? [pid 555] <... exit_group resumed>) = ? [pid 562] set_robust_list(0x5555636e06a0, 24 [pid 561] <... futex resumed>) = 1 [pid 560] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 559] <... futex resumed>) = 0 [pid 558] +++ exited with 0 +++ [pid 555] +++ exited with 0 +++ [pid 561] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 560] <... futex resumed>) = 1 [pid 559] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 557] <... futex resumed>) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=555, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 561] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 560] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 559] <... futex resumed>) = 0 [pid 557] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] ioctl(7, LOOP_SET_FD, 6 [pid 561] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 560] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 559] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 557] <... futex resumed>) = 0 [pid 554] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 562] <... set_robust_list resumed>) = 0 [pid 561] <... open resumed>) = 5 [pid 560] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 557] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 554] close(7 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 562] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 561] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 560] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 554] <... close resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 562] <... prctl resumed>) = 0 [pid 561] <... futex resumed>) = 1 [pid 560] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 559] <... futex resumed>) = 0 [pid 554] close(6 [pid 302] ioctl(3, LOOP_CLR_FD [pid 562] setpgid(0, 0 [pid 561] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 560] <... futex resumed>) = 1 [pid 559] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 557] <... futex resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 562] <... setpgid resumed>) = 0 [pid 561] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 560] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 559] <... futex resumed>) = 0 [pid 557] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] <... close resumed>) = 0 [pid 302] close(3 [pid 561] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 559] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 557] <... futex resumed>) = 0 [pid 302] <... close resumed>) = 0 [pid 562] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 561] <... mmap resumed>) = 0x20000000 [pid 560] <... open resumed>) = 5 [pid 557] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 554] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 562] <... openat resumed>) = 3 [pid 561] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 560] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 557] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 554] <... futex resumed>) = 1 [pid 552] <... futex resumed>) = 0 [pid 562] write(3, "1000", 4 [pid 561] <... futex resumed>) = 1 [pid 560] <... futex resumed>) = 0 [pid 559] <... futex resumed>) = 0 [pid 557] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 552] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 563 [pid 562] <... write resumed>) = 4 [pid 561] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 560] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 559] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 557] <... futex resumed>) = 0 [pid 554] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 552] <... futex resumed>) = 0 [pid 562] close(3 [pid 561] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 560] <... mmap resumed>) = 0x20000000 [pid 559] <... futex resumed>) = 0 [pid 557] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 554] mknod(0x20000000, 000 [pid 552] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 562] <... close resumed>) = 0 [pid 561] memfd_create("syzkaller", 0 [pid 560] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 559] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 557] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 562] write(1, "executing program\n", 18 [pid 561] <... memfd_create resumed>) = 6 executing program [pid 560] <... futex resumed>) = 0 [pid 557] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 554] <... mknod resumed>) = -1 EEXIST (File exists) [pid 561] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 557] <... futex resumed>) = 0 [pid 554] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 562] <... write resumed>) = 18 [pid 561] <... mmap resumed>) = 0x7fe6f03b1000 [pid 560] memfd_create("syzkaller", 0 [pid 557] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 554] <... futex resumed>) = 1 [pid 562] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 561] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 560] <... memfd_create resumed>) = 6 [pid 554] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 552] <... futex resumed>) = 0 [pid 562] <... futex resumed>) = 0 [pid 561] <... write resumed>) = 131072 [pid 560] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 562] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 561] munmap(0x7fe6f03b1000, 138412032 [pid 552] exit_group(0 [pid 561] <... munmap resumed>) = 0 [pid 560] <... mmap resumed>) = 0x7fe6f03b1000 [pid 562] <... rt_sigaction resumed>NULL, 8) = 0 [pid 561] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 554] <... futex resumed>) = ? [pid 552] <... exit_group resumed>) = ? [pid 561] <... openat resumed>) = 7 [pid 561] ioctl(7, LOOP_SET_FD, 6 [pid 554] +++ exited with 0 +++ [pid 561] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 561] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 563 attached [pid 552] +++ exited with 0 +++ [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=552, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 563] set_robust_list(0x5555636e06a0, 24) = 0 [pid 563] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 561] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 562] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 561] close(7 [pid 560] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 561] <... close resumed>) = 0 [pid 561] close(6) = 0 [pid 560] <... write resumed>) = 131072 [pid 562] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 561] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 560] munmap(0x7fe6f03b1000, 138412032 [pid 561] <... futex resumed>) = 1 [pid 559] <... futex resumed>) = 0 [pid 562] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 561] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 560] <... munmap resumed>) = 0 [pid 559] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 562] <... mmap resumed>) = 0x7fe6f87b1000 [pid 561] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 560] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 559] <... futex resumed>) = 0 [pid 561] mknod(0x20000000, 000 [pid 560] <... openat resumed>) = 7 [pid 559] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 562] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 561] <... mknod resumed>) = -1 EEXIST (File exists) [pid 560] ioctl(7, LOOP_SET_FD, 6 [pid 561] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 563] <... prctl resumed>) = 0 [pid 562] <... mprotect resumed>) = 0 [pid 561] <... futex resumed>) = 1 [pid 560] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 559] <... futex resumed>) = 0 [pid 563] setpgid(0, 0 [pid 562] rt_sigprocmask(SIG_BLOCK, ~[], [pid 561] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 560] ioctl(7, LOOP_CLR_FD [pid 559] exit_group(0 [pid 563] <... setpgid resumed>) = 0 [pid 562] <... rt_sigprocmask resumed>[], 8) = 0 [pid 561] <... futex resumed>) = ? [pid 560] <... ioctl resumed>) = 0 [pid 559] <... exit_group resumed>) = ? [pid 563] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 562] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 561] +++ exited with 0 +++ [pid 559] +++ exited with 0 +++ [pid 563] <... openat resumed>) = 3 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=559, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 563] write(3, "1000", 4 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 563] <... write resumed>) = 4 [pid 562] <... clone3 resumed> => {parent_tid=[564]}, 88) = 564 [pid 560] ioctl(7, LOOP_SET_FD, 6 [pid 303] <... restart_syscall resumed>) = 0 [pid 563] close(3 [pid 562] rt_sigprocmask(SIG_SETMASK, [], [pid 560] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 563] <... close resumed>) = 0 [pid 562] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 560] close(7 [pid 304] <... openat resumed>) = 3 executing program [pid 563] write(1, "executing program\n", 18 [pid 562] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 560] <... close resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 563] <... write resumed>) = 18 [pid 562] <... futex resumed>) = 0 [pid 560] close(6 [pid 304] <... ioctl resumed>) = 0 [pid 303] <... openat resumed>) = 3 [pid 563] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 562] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 304] close(3 [pid 303] ioctl(3, LOOP_CLR_FD [pid 563] <... futex resumed>) = 0 [pid 560] <... close resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 563] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 560] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] close(3 [pid 563] <... rt_sigaction resumed>NULL, 8) = 0 [pid 560] <... futex resumed>) = 1 [pid 557] <... futex resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 563] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 560] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 557] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 565 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 563] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 560] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 557] <... futex resumed>) = 0 [pid 563] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 560] mknod(0x20000000, 000 [pid 557] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 566 [pid 563] <... mmap resumed>) = 0x7fe6f87b1000 [pid 560] <... mknod resumed>) = -1 EEXIST (File exists) [pid 563] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 560] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 563] <... mprotect resumed>) = 0 [pid 563] rt_sigprocmask(SIG_BLOCK, ~[], [pid 560] <... futex resumed>) = 1 [pid 557] <... futex resumed>) = 0 [pid 563] <... rt_sigprocmask resumed>[], 8) = 0 [pid 560] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 563] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 557] exit_group(0 [pid 563] <... clone3 resumed> => {parent_tid=[567]}, 88) = 567 [pid 557] <... exit_group resumed>) = ? [pid 560] <... futex resumed>) = ? [pid 563] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 563] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 563] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 564 attached [pid 564] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 560] +++ exited with 0 +++ [pid 557] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=557, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 564] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 565 attached NULL, 8) = 0 [pid 564] memfd_create("syzkaller", 0 [pid 565] set_robust_list(0x5555636e06a0, 24) = 0 [pid 565] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 564] <... memfd_create resumed>) = 3 [pid 565] <... prctl resumed>) = 0 [pid 564] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 565] setpgid(0, 0 [pid 564] <... mmap resumed>) = 0x7fe6f03b1000 [pid 565] <... setpgid resumed>) = 0 [pid 564] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 565] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 565] write(3, "1000", 4) = 4 executing program [pid 565] close(3) = 0 [pid 565] write(1, "executing program\n", 18) = 18 [pid 565] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 566 attached [pid 565] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 566] set_robust_list(0x5555636e06a0, 24 [pid 565] <... rt_sigaction resumed>NULL, 8) = 0 [pid 566] <... set_robust_list resumed>) = 0 [pid 565] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 566] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 565] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 567 attached [pid 566] <... prctl resumed>) = 0 [pid 565] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 567] set_robust_list(0x7fe6f87d19a0, 24 [pid 566] setpgid(0, 0 [pid 565] <... mmap resumed>) = 0x7fe6f87b1000 [pid 567] <... set_robust_list resumed>) = 0 [pid 566] <... setpgid resumed>) = 0 [pid 565] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 567] rt_sigprocmask(SIG_SETMASK, [], [pid 566] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 565] <... mprotect resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 567] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 566] <... openat resumed>) = 3 [pid 565] rt_sigprocmask(SIG_BLOCK, ~[], [pid 305] <... openat resumed>) = 3 [pid 567] memfd_create("syzkaller", 0 [pid 566] write(3, "1000", 4 [pid 565] <... rt_sigprocmask resumed>[], 8) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 567] <... memfd_create resumed>) = 3 [pid 566] <... write resumed>) = 4 [pid 565] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 305] <... ioctl resumed>) = 0 [pid 567] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 566] close(3 [pid 305] close(3 [pid 567] <... mmap resumed>) = 0x7fe6f03b1000 [pid 566] <... close resumed>) = 0 [pid 565] <... clone3 resumed> => {parent_tid=[568]}, 88) = 568 [pid 305] <... close resumed>) = 0 executing program [pid 567] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 566] write(1, "executing program\n", 18 [pid 565] rt_sigprocmask(SIG_SETMASK, [], [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 566] <... write resumed>) = 18 [pid 565] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 566] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 565] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 564] <... write resumed>) = 262144 [pid 566] <... futex resumed>) = 0 [pid 565] <... futex resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 569 [pid 566] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 565] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 566] <... rt_sigaction resumed>NULL, 8) = 0 [pid 564] munmap(0x7fe6f03b1000, 138412032 [pid 566] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 564] <... munmap resumed>) = 0 [pid 566] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 564] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 567] <... write resumed>) = 262144 [pid 566] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 564] <... openat resumed>) = 4 [pid 566] <... mmap resumed>) = 0x7fe6f87b1000 [pid 564] ioctl(4, LOOP_SET_FD, 3 [pid 566] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 564] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 566] <... mprotect resumed>) = 0 [pid 564] ioctl(4, LOOP_CLR_FD [pid 566] rt_sigprocmask(SIG_BLOCK, ~[], [pid 564] <... ioctl resumed>) = 0 [pid 566] <... rt_sigprocmask resumed>[], 8) = 0 [pid 566] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[570]}, 88) = 570 [pid 566] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 566] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 567] munmap(0x7fe6f03b1000, 138412032 [pid 566] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 567] <... munmap resumed>) = 0 [pid 567] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 564] ioctl(4, LOOP_SET_FD, 3 [pid 567] <... openat resumed>) = 4 [pid 564] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 567] ioctl(4, LOOP_SET_FD, 3 [pid 564] close(4 [pid 567] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 564] <... close resumed>) = 0 [pid 567] ioctl(4, LOOP_CLR_FD [pid 564] close(3 [pid 567] <... ioctl resumed>) = 0 [pid 564] <... close resumed>) = 0 [pid 564] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 562] <... futex resumed>) = 0 [pid 564] chdir("./file0" [pid 562] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 564] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 562] <... futex resumed>) = 0 [pid 564] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 562] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 564] <... futex resumed>) = 0 [pid 562] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 564] creat("./bus", 000 [pid 562] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 564] <... creat resumed>) = 3 [pid 562] <... futex resumed>) = 0 [pid 564] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 562] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 567] ioctl(4, LOOP_SET_FD, 3 [pid 564] <... futex resumed>) = 0 [pid 562] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 567] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 564] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 562] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 567] close(4 [pid 564] <... openat resumed>) = 4 [pid 562] <... futex resumed>) = 0 [pid 567] <... close resumed>) = 0 [pid 564] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 562] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 567] close(3 [pid 564] <... futex resumed>) = 0 [pid 562] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 567] <... close resumed>) = 0 [pid 564] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 562] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 567] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 564] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 562] <... futex resumed>) = 0 [pid 567] <... futex resumed>) = 1 [pid 564] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 563] <... futex resumed>) = 0 [pid 562] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 567] chdir("./file0" [pid 564] <... futex resumed>) = 0 [pid 563] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 562] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 567] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 564] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 563] <... futex resumed>) = 0 [pid 562] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 567] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 564] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 563] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 562] <... futex resumed>) = 0 [pid 567] <... futex resumed>) = 0 [pid 564] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 563] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 562] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 570 attached [pid 567] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 564] <... open resumed>) = 5 [pid 563] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 570] set_robust_list(0x7fe6f87d19a0, 24 [pid 567] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 564] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 563] <... futex resumed>) = 0 [pid 570] <... set_robust_list resumed>) = 0 [pid 567] creat("./bus", 000 [pid 564] <... futex resumed>) = 1 [pid 563] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 562] <... futex resumed>) = 0 [pid 570] rt_sigprocmask(SIG_SETMASK, [], [pid 567] <... creat resumed>) = 3 [pid 564] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 562] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 570] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 567] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 564] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 562] <... futex resumed>) = 0 [pid 570] memfd_create("syzkaller", 0 [pid 567] <... futex resumed>) = 1 [pid 564] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 563] <... futex resumed>) = 0 [pid 562] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 570] <... memfd_create resumed>) = 3 [pid 567] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 564] <... mmap resumed>) = 0x20000000 [pid 563] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 570] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 567] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 564] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 563] <... futex resumed>) = 0 [pid 570] <... mmap resumed>) = 0x7fe6f03b1000 [pid 567] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 564] <... futex resumed>) = 1 [pid 563] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 562] <... futex resumed>) = 0 [pid 570] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 567] <... openat resumed>) = 4 [pid 564] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 562] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 567] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 564] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 562] <... futex resumed>) = 0 [pid 567] <... futex resumed>) = 1 [pid 564] memfd_create("syzkaller", 0 [pid 563] <... futex resumed>) = 0 [pid 562] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 570] <... write resumed>) = 262144 [pid 567] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 564] <... memfd_create resumed>) = 6 [pid 563] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 567] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 564] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 563] <... futex resumed>) = 0 [pid 567] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 564] <... mmap resumed>) = 0x7fe6f03b1000 [pid 563] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 568 attached [pid 567] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 564] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 567] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 564] <... write resumed>) = 131072 [pid 567] <... futex resumed>) = 1 [pid 564] munmap(0x7fe6f03b1000, 138412032 [pid 563] <... futex resumed>) = 0 [pid 567] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 564] <... munmap resumed>) = 0 [pid 563] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 570] munmap(0x7fe6f03b1000, 138412032 [pid 567] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 564] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 563] <... futex resumed>) = 0 ./strace-static-x86_64: Process 569 attached [pid 570] <... munmap resumed>) = 0 [pid 568] set_robust_list(0x7fe6f87d19a0, 24 [pid 567] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 564] <... openat resumed>) = 7 [pid 563] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 570] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 567] <... open resumed>) = 5 [pid 564] ioctl(7, LOOP_SET_FD, 6 [pid 570] <... openat resumed>) = 4 [pid 569] set_robust_list(0x5555636e06a0, 24 [pid 568] <... set_robust_list resumed>) = 0 [pid 567] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 564] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 570] ioctl(4, LOOP_SET_FD, 3 [pid 567] <... futex resumed>) = 1 [pid 564] ioctl(7, LOOP_CLR_FD [pid 563] <... futex resumed>) = 0 [pid 570] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 569] <... set_robust_list resumed>) = 0 [pid 568] rt_sigprocmask(SIG_SETMASK, [], [pid 567] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 564] <... ioctl resumed>) = 0 [pid 563] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 570] ioctl(4, LOOP_CLR_FD [pid 568] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 567] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 563] <... futex resumed>) = 0 [pid 569] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 570] <... ioctl resumed>) = 0 [pid 567] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 563] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 569] <... prctl resumed>) = 0 [pid 568] memfd_create("syzkaller", 0 [pid 567] <... mmap resumed>) = 0x20000000 [pid 567] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 563] <... futex resumed>) = 0 [pid 567] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 563] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 567] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 563] <... futex resumed>) = 0 [pid 567] memfd_create("syzkaller", 0 [pid 564] ioctl(7, LOOP_SET_FD, 6 [pid 563] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 568] <... memfd_create resumed>) = 3 [pid 567] <... memfd_create resumed>) = 6 [pid 564] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 569] setpgid(0, 0 [pid 567] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 564] close(7 [pid 570] ioctl(4, LOOP_SET_FD, 3 [pid 567] <... mmap resumed>) = 0x7fe6f03b1000 [pid 564] <... close resumed>) = 0 [pid 570] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 569] <... setpgid resumed>) = 0 [pid 568] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 567] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 564] close(6 [pid 570] close(4 [pid 569] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 568] <... mmap resumed>) = 0x7fe6f03b1000 [pid 567] <... write resumed>) = 131072 [pid 564] <... close resumed>) = 0 [pid 570] <... close resumed>) = 0 [pid 569] <... openat resumed>) = 3 [pid 567] munmap(0x7fe6f03b1000, 138412032 [pid 564] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 570] close(3 [pid 567] <... munmap resumed>) = 0 [pid 564] <... futex resumed>) = 1 [pid 562] <... futex resumed>) = 0 [pid 570] <... close resumed>) = 0 [pid 567] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 564] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 562] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 570] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 569] write(3, "1000", 4 [pid 568] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 567] <... openat resumed>) = 7 [pid 564] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 562] <... futex resumed>) = 0 [pid 570] <... futex resumed>) = 1 [pid 569] <... write resumed>) = 4 [pid 567] ioctl(7, LOOP_SET_FD, 6 [pid 566] <... futex resumed>) = 0 [pid 564] mknod(0x20000000, 000 [pid 562] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 570] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 569] close(3 [pid 568] <... write resumed>) = 262144 [pid 567] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 566] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 564] <... mknod resumed>) = -1 EEXIST (File exists) [pid 570] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 567] ioctl(7, LOOP_CLR_FD [pid 566] <... futex resumed>) = 0 [pid 564] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 570] chdir("./file0" [pid 567] <... ioctl resumed>) = 0 [pid 566] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 564] <... futex resumed>) = 1 [pid 562] <... futex resumed>) = 0 [pid 570] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 564] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 562] exit_group(0 [pid 570] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 569] <... close resumed>) = 0 [pid 564] <... futex resumed>) = ? [pid 562] <... exit_group resumed>) = ? executing program [pid 570] <... futex resumed>) = 1 [pid 569] write(1, "executing program\n", 18 [pid 566] <... futex resumed>) = 0 [pid 564] +++ exited with 0 +++ [pid 562] +++ exited with 0 +++ [pid 570] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 569] <... write resumed>) = 18 [pid 567] ioctl(7, LOOP_SET_FD, 6 [pid 566] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=562, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 570] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 569] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 567] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 566] <... futex resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 570] creat("./bus", 000 [pid 569] <... futex resumed>) = 0 [pid 568] munmap(0x7fe6f03b1000, 138412032 [pid 567] close(7 [pid 566] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 570] <... creat resumed>) = 3 [pid 569] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 567] <... close resumed>) = 0 [pid 570] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 567] close(6 [pid 570] <... futex resumed>) = 1 [pid 569] <... rt_sigaction resumed>NULL, 8) = 0 [pid 568] <... munmap resumed>) = 0 [pid 567] <... close resumed>) = 0 [pid 566] <... futex resumed>) = 0 [pid 570] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 569] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 567] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 566] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 570] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 569] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 568] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 567] <... futex resumed>) = 1 [pid 566] <... futex resumed>) = 0 [pid 563] <... futex resumed>) = 0 [pid 570] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 569] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 567] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 566] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 563] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 570] <... openat resumed>) = 4 [pid 569] <... mmap resumed>) = 0x7fe6f87b1000 [pid 568] <... openat resumed>) = 4 [pid 567] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 563] <... futex resumed>) = 0 [pid 570] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 569] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 568] ioctl(4, LOOP_SET_FD, 3 [pid 567] mknod(0x20000000, 000 [pid 563] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 570] <... futex resumed>) = 1 [pid 569] <... mprotect resumed>) = 0 [pid 568] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 567] <... mknod resumed>) = -1 EEXIST (File exists) [pid 566] <... futex resumed>) = 0 [pid 570] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 569] rt_sigprocmask(SIG_BLOCK, ~[], [pid 568] ioctl(4, LOOP_CLR_FD [pid 567] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 566] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 570] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 569] <... rt_sigprocmask resumed>[], 8) = 0 [pid 568] <... ioctl resumed>) = 0 [pid 567] <... futex resumed>) = 1 [pid 566] <... futex resumed>) = 0 [pid 563] <... futex resumed>) = 0 [pid 570] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 569] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 567] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 566] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 563] exit_group(0 [pid 570] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 567] <... futex resumed>) = ? [pid 563] <... exit_group resumed>) = ? [pid 570] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 569] <... clone3 resumed> => {parent_tid=[571]}, 88) = 571 [pid 567] +++ exited with 0 +++ [pid 563] +++ exited with 0 +++ [pid 306] <... restart_syscall resumed>) = 0 [pid 570] <... futex resumed>) = 1 [pid 569] rt_sigprocmask(SIG_SETMASK, [], [pid 566] <... futex resumed>) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=563, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 570] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 569] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 566] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 570] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 569] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 566] <... futex resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 570] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 569] <... futex resumed>) = 0 [pid 566] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... openat resumed>) = 3 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 570] <... open resumed>) = 5 [pid 569] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 306] ioctl(3, LOOP_CLR_FD [pid 302] <... openat resumed>) = 3 [pid 570] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... ioctl resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 570] <... futex resumed>) = 1 [pid 568] ioctl(4, LOOP_SET_FD, 3 [pid 566] <... futex resumed>) = 0 [pid 306] close(3 [pid 302] <... ioctl resumed>) = 0 [pid 570] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 566] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... close resumed>) = 0 [pid 302] close(3 [pid 570] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 566] <... futex resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 302] <... close resumed>) = 0 [pid 570] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 566] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 571 attached [pid 570] <... mmap resumed>) = 0x20000000 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 572 [pid 571] set_robust_list(0x7fe6f87d19a0, 24 [pid 570] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 573 [pid 571] <... set_robust_list resumed>) = 0 [pid 570] <... futex resumed>) = 1 [pid 568] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 566] <... futex resumed>) = 0 [pid 571] rt_sigprocmask(SIG_SETMASK, [], [pid 570] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 566] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 571] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 570] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 566] <... futex resumed>) = 0 [pid 571] memfd_create("syzkaller", 0 [pid 570] memfd_create("syzkaller", 0 [pid 566] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 571] <... memfd_create resumed>) = 3 [pid 570] <... memfd_create resumed>) = 6 [pid 568] close(4 [pid 571] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 570] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 568] <... close resumed>) = 0 [pid 571] <... mmap resumed>) = 0x7fe6f03b1000 [pid 570] <... mmap resumed>) = 0x7fe6f03b1000 [pid 568] close(3 [pid 571] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 570] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 568] <... close resumed>) = 0 [pid 570] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 568] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 570] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 7 [pid 568] <... futex resumed>) = 1 [pid 565] <... futex resumed>) = 0 [pid 570] ioctl(7, LOOP_SET_FD, 6 [pid 568] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 565] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 570] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 568] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 565] <... futex resumed>) = 0 [pid 570] ioctl(7, LOOP_CLR_FD [pid 568] chdir("./file0" [pid 565] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 571] <... write resumed>) = 262144 [pid 570] <... ioctl resumed>) = 0 [pid 568] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 568] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 565] <... futex resumed>) = 0 [pid 568] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 565] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 568] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 565] <... futex resumed>) = 0 [pid 568] creat("./bus", 000 [pid 565] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 568] <... creat resumed>) = 3 [pid 568] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 565] <... futex resumed>) = 0 [pid 568] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 565] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 568] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 565] <... futex resumed>) = 0 [pid 568] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 565] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 572 attached [pid 571] munmap(0x7fe6f03b1000, 138412032 [pid 570] ioctl(7, LOOP_SET_FD, 6 [pid 572] set_robust_list(0x5555636e06a0, 24 [pid 571] <... munmap resumed>) = 0 [pid 570] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 568] <... openat resumed>) = 4 ./strace-static-x86_64: Process 573 attached [pid 572] <... set_robust_list resumed>) = 0 [pid 571] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 570] close(7 [pid 568] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 573] set_robust_list(0x5555636e06a0, 24 [pid 572] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 571] <... openat resumed>) = 4 [pid 570] <... close resumed>) = 0 [pid 568] <... futex resumed>) = 1 [pid 565] <... futex resumed>) = 0 [pid 573] <... set_robust_list resumed>) = 0 [pid 572] <... prctl resumed>) = 0 [pid 571] ioctl(4, LOOP_SET_FD, 3 [pid 570] close(6 [pid 568] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 565] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 573] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 572] setpgid(0, 0 [pid 571] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 570] <... close resumed>) = 0 [pid 568] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 565] <... futex resumed>) = 0 [pid 573] <... prctl resumed>) = 0 [pid 572] <... setpgid resumed>) = 0 [pid 571] ioctl(4, LOOP_CLR_FD [pid 570] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 568] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 565] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 573] setpgid(0, 0 [pid 572] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 571] <... ioctl resumed>) = 0 [pid 570] <... futex resumed>) = 1 [pid 568] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 566] <... futex resumed>) = 0 [pid 573] <... setpgid resumed>) = 0 [pid 572] <... openat resumed>) = 3 [pid 570] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 568] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 566] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 573] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 572] write(3, "1000", 4 [pid 570] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 568] <... futex resumed>) = 1 [pid 566] <... futex resumed>) = 0 [pid 565] <... futex resumed>) = 0 [pid 573] <... openat resumed>) = 3 [pid 572] <... write resumed>) = 4 [pid 570] mknod(0x20000000, 000 [pid 568] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 566] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 565] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 573] write(3, "1000", 4 [pid 572] close(3 [pid 570] <... mknod resumed>) = -1 EEXIST (File exists) [pid 568] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 565] <... futex resumed>) = 0 [pid 573] <... write resumed>) = 4 [pid 572] <... close resumed>) = 0 [pid 571] ioctl(4, LOOP_SET_FD, 3 [pid 570] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 568] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 565] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}executing program [pid 573] close(3 [pid 572] write(1, "executing program\n", 18 [pid 571] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 570] <... futex resumed>) = 1 [pid 568] <... open resumed>) = 5 [pid 566] <... futex resumed>) = 0 [pid 573] <... close resumed>) = 0 [pid 572] <... write resumed>) = 18 [pid 571] close(4 [pid 570] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 568] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 566] exit_group(0executing program [pid 573] write(1, "executing program\n", 18 [pid 572] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 571] <... close resumed>) = 0 [pid 570] <... futex resumed>) = ? [pid 566] <... exit_group resumed>) = ? [pid 573] <... write resumed>) = 18 [pid 572] <... futex resumed>) = 0 [pid 571] close(3 [pid 570] +++ exited with 0 +++ [pid 566] +++ exited with 0 +++ [pid 573] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 572] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 571] <... close resumed>) = 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=566, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 573] <... futex resumed>) = 0 [pid 572] <... rt_sigaction resumed>NULL, 8) = 0 [pid 571] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 568] <... futex resumed>) = 1 [pid 565] <... futex resumed>) = 0 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 573] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 572] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 571] <... futex resumed>) = 1 [pid 569] <... futex resumed>) = 0 [pid 568] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 565] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 573] <... rt_sigaction resumed>NULL, 8) = 0 [pid 572] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 571] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 569] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 568] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 565] <... futex resumed>) = 0 [pid 573] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 572] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 571] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 569] <... futex resumed>) = 0 [pid 568] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 565] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 573] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 572] <... mmap resumed>) = 0x7fe6f87b1000 [pid 571] chdir("./file0" [pid 569] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 573] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 572] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 571] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 568] <... mmap resumed>) = 0x20000000 [pid 573] <... mmap resumed>) = 0x7fe6f87b1000 [pid 572] <... mprotect resumed>) = 0 [pid 571] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 568] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 573] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 572] rt_sigprocmask(SIG_BLOCK, ~[], [pid 571] <... futex resumed>) = 1 [pid 569] <... futex resumed>) = 0 [pid 568] <... futex resumed>) = 1 [pid 565] <... futex resumed>) = 0 [pid 573] <... mprotect resumed>) = 0 [pid 572] <... rt_sigprocmask resumed>[], 8) = 0 [pid 571] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 569] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 568] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 565] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 573] rt_sigprocmask(SIG_BLOCK, ~[], [pid 572] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 571] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 569] <... futex resumed>) = 0 [pid 568] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 565] <... futex resumed>) = 0 [pid 573] <... rt_sigprocmask resumed>[], 8) = 0 [pid 571] creat("./bus", 000 [pid 569] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 565] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 573] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 572] <... clone3 resumed> => {parent_tid=[574]}, 88) = 574 [pid 571] <... creat resumed>) = 3 [pid 568] memfd_create("syzkaller", 0 [pid 572] rt_sigprocmask(SIG_SETMASK, [], [pid 571] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 573] <... clone3 resumed> => {parent_tid=[575]}, 88) = 575 [pid 572] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 571] <... futex resumed>) = 1 [pid 569] <... futex resumed>) = 0 [pid 568] <... memfd_create resumed>) = 6 [pid 573] rt_sigprocmask(SIG_SETMASK, [], [pid 572] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 571] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 569] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 568] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 573] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 572] <... futex resumed>) = 0 [pid 571] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 569] <... futex resumed>) = 0 [pid 568] <... mmap resumed>) = 0x7fe6f03b1000 [pid 573] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 572] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 571] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 569] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 573] <... futex resumed>) = 0 [pid 571] <... openat resumed>) = 4 [pid 303] <... restart_syscall resumed>) = 0 [pid 573] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 571] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 569] <... futex resumed>) = 0 [pid 568] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 571] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 569] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 571] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 569] <... futex resumed>) = 0 [pid 568] <... write resumed>) = 131072 [pid 303] <... openat resumed>) = 3 [pid 571] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 569] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] ioctl(3, LOOP_CLR_FD [pid 568] munmap(0x7fe6f03b1000, 138412032 [pid 303] <... ioctl resumed>) = 0 [pid 303] close(3) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 576 ./strace-static-x86_64: Process 574 attached [pid 574] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 574] rt_sigprocmask(SIG_SETMASK, [], [pid 568] <... munmap resumed>) = 0 [pid 574] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 574] memfd_create("syzkaller", 0) = 3 [pid 574] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 574] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 568] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 571] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 571] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 568] <... openat resumed>) = 7 [pid 571] <... futex resumed>) = 1 [pid 569] <... futex resumed>) = 0 [pid 571] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 569] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 568] ioctl(7, LOOP_SET_FD, 6 [pid 571] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 569] <... futex resumed>) = 0 [pid 571] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 569] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 568] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 571] <... open resumed>) = 5 [pid 571] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 569] <... futex resumed>) = 0 [pid 571] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 569] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 571] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 569] <... futex resumed>) = 0 [pid 571] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 569] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 571] <... mmap resumed>) = 0x20000000 [pid 571] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 569] <... futex resumed>) = 0 [pid 571] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 569] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 571] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 569] <... futex resumed>) = 0 [pid 571] memfd_create("syzkaller", 0 [pid 569] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 571] <... memfd_create resumed>) = 6 [pid 571] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 571] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 568] ioctl(7, LOOP_CLR_FD [pid 571] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 568] <... ioctl resumed>) = 0 [pid 571] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 7 [pid 571] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 571] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 576 attached [pid 576] set_robust_list(0x5555636e06a0, 24) = 0 [pid 576] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 576] setpgid(0, 0) = 0 [pid 571] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 571] close(7) = 0 [pid 571] close(6) = 0 [pid 571] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 569] <... futex resumed>) = 0 [pid 576] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 571] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 569] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 576] <... openat resumed>) = 3 [pid 574] <... write resumed>) = 262144 [pid 571] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 569] <... futex resumed>) = 0 [pid 576] write(3, "1000", 4 [pid 571] mknod(0x20000000, 000 [pid 569] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 568] ioctl(7, LOOP_SET_FD, 6 [pid 576] <... write resumed>) = 4 [pid 571] <... mknod resumed>) = -1 EEXIST (File exists) [pid 576] close(3 [pid 571] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 568] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 576] <... close resumed>) = 0 [pid 571] <... futex resumed>) = 1 executing program [pid 569] <... futex resumed>) = 0 [pid 568] close(7 [pid 576] write(1, "executing program\n", 18 [pid 571] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 569] exit_group(0 [pid 576] <... write resumed>) = 18 [pid 571] <... futex resumed>) = ? [pid 569] <... exit_group resumed>) = ? [pid 568] <... close resumed>) = 0 ./strace-static-x86_64: Process 575 attached [pid 576] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 571] +++ exited with 0 +++ [pid 569] +++ exited with 0 +++ [pid 568] close(6 [pid 576] <... futex resumed>) = 0 [pid 574] munmap(0x7fe6f03b1000, 138412032 [pid 576] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 575] set_robust_list(0x7fe6f87d19a0, 24 [pid 574] <... munmap resumed>) = 0 [pid 568] <... close resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=569, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 576] <... rt_sigaction resumed>NULL, 8) = 0 [pid 574] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 576] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 574] <... openat resumed>) = 4 [pid 576] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 574] ioctl(4, LOOP_SET_FD, 3 [pid 576] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 574] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 576] <... mmap resumed>) = 0x7fe6f87b1000 [pid 574] ioctl(4, LOOP_CLR_FD [pid 576] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 574] <... ioctl resumed>) = 0 [pid 576] <... mprotect resumed>) = 0 [pid 576] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 576] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[577]}, 88) = 577 [pid 576] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 576] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 576] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 577 attached [pid 574] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 574] close(4) = 0 [pid 574] close(3) = 0 [pid 574] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 572] <... futex resumed>) = 0 [pid 574] chdir("./file0" [pid 572] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 574] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 572] <... futex resumed>) = 0 [pid 575] <... set_robust_list resumed>) = 0 [pid 574] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 572] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 568] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 574] <... futex resumed>) = 0 [pid 572] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 568] <... futex resumed>) = 1 [pid 565] <... futex resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 574] creat("./bus", 000 [pid 572] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 568] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 565] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 574] <... creat resumed>) = 3 [pid 572] <... futex resumed>) = 0 [pid 568] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 565] <... futex resumed>) = 0 [pid 574] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 572] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 568] mknod(0x20000000, 000 [pid 565] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 574] <... futex resumed>) = 0 [pid 572] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 568] <... mknod resumed>) = -1 EEXIST (File exists) [pid 574] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 572] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 574] <... openat resumed>) = 4 [pid 572] <... futex resumed>) = 0 [pid 568] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 574] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 572] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 568] <... futex resumed>) = 1 [pid 565] <... futex resumed>) = 0 [pid 574] <... futex resumed>) = 0 [pid 572] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 568] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 305] <... openat resumed>) = 3 [pid 574] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 572] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 565] exit_group(0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 572] <... futex resumed>) = 0 [pid 568] <... futex resumed>) = ? [pid 565] <... exit_group resumed>) = ? [pid 305] <... ioctl resumed>) = 0 [pid 572] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 568] +++ exited with 0 +++ [pid 577] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 577] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 565] +++ exited with 0 +++ [pid 305] close(3 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=565, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 305] <... close resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 577] memfd_create("syzkaller", 0) = 3 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 578 [pid 575] rt_sigprocmask(SIG_SETMASK, [], [pid 577] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 575] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 577] <... mmap resumed>) = 0x7fe6f03b1000 [pid 575] memfd_create("syzkaller", 0 [pid 574] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 574] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 572] <... futex resumed>) = 0 [pid 574] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 572] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 574] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 572] <... futex resumed>) = 0 [pid 574] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 572] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 574] <... open resumed>) = 5 [pid 574] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 572] <... futex resumed>) = 0 [pid 574] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 572] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 574] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 572] <... futex resumed>) = 0 [pid 574] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 572] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 574] <... mmap resumed>) = 0x20000000 [pid 574] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 572] <... futex resumed>) = 0 [pid 574] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 572] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 574] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 572] <... futex resumed>) = 0 [pid 574] memfd_create("syzkaller", 0 [pid 572] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 574] <... memfd_create resumed>) = 6 [pid 574] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 574] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 575] <... memfd_create resumed>) = 3 [pid 574] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 574] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 7 [pid 574] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 574] ioctl(7, LOOP_CLR_FD) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 304] ioctl(3, LOOP_CLR_FD) = 0 [pid 574] ioctl(7, LOOP_SET_FD, 6 [pid 304] close(3 [pid 574] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] <... close resumed>) = 0 [pid 574] close(7 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 574] <... close resumed>) = 0 [pid 574] close(6 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 579 [pid 574] <... close resumed>) = 0 [pid 575] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 574] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 572] <... futex resumed>) = 0 [pid 574] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 572] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 574] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 572] <... futex resumed>) = 0 [pid 574] mknod(0x20000000, 000 [pid 572] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 574] <... mknod resumed>) = -1 EEXIST (File exists) [pid 574] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 572] <... futex resumed>) = 0 [pid 574] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 572] exit_group(0 [pid 574] <... futex resumed>) = ? [pid 572] <... exit_group resumed>) = ? [pid 574] +++ exited with 0 +++ [pid 572] +++ exited with 0 +++ [pid 577] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=572, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 577] <... write resumed>) = 262144 [pid 577] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 577] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 575] <... mmap resumed>) = 0x7fe6f03b1000 ./strace-static-x86_64: Process 578 attached [pid 577] <... openat resumed>) = 4 [pid 578] set_robust_list(0x5555636e06a0, 24 [pid 577] ioctl(4, LOOP_SET_FD, 3 [pid 578] <... set_robust_list resumed>) = 0 [pid 577] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 578] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 577] ioctl(4, LOOP_CLR_FD) = 0 [pid 578] <... prctl resumed>) = 0 [pid 578] setpgid(0, 0) = 0 [pid 578] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 578] write(3, "1000", 4) = 4 [pid 578] close(3executing program ) = 0 [pid 578] write(1, "executing program\n", 18) = 18 [pid 578] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 577] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 577] close(4) = 0 [pid 577] close(3) = 0 [pid 578] <... futex resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3) = 0 [pid 578] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 578] <... rt_sigaction resumed>NULL, 8) = 0 [pid 578] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 580 [pid 578] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 577] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 578] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 577] <... futex resumed>) = 1 [pid 576] <... futex resumed>) = 0 [pid 578] <... mmap resumed>) = 0x7fe6f87b1000 [pid 577] chdir("./file0" [pid 576] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 578] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 577] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 576] <... futex resumed>) = 0 [pid 578] <... mprotect resumed>) = 0 [pid 577] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 576] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 578] rt_sigprocmask(SIG_BLOCK, ~[], [pid 577] <... futex resumed>) = 0 [pid 576] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 578] <... rt_sigprocmask resumed>[], 8) = 0 [pid 577] creat("./bus", 000 [pid 576] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 578] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 577] <... creat resumed>) = 3 [pid 576] <... futex resumed>) = 0 [pid 577] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 576] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 578] <... clone3 resumed> => {parent_tid=[581]}, 88) = 581 [pid 577] <... futex resumed>) = 0 [pid 576] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 578] rt_sigprocmask(SIG_SETMASK, [], [pid 577] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 576] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 578] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 577] <... openat resumed>) = 4 [pid 576] <... futex resumed>) = 0 [pid 578] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 577] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 576] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 578] <... futex resumed>) = 0 [pid 577] <... futex resumed>) = 0 [pid 576] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 578] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 577] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 576] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 579 attached [pid 577] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 576] <... futex resumed>) = 0 [pid 575] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 577] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 576] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 577] <... futex resumed>) = 0 [pid 576] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 577] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 576] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 577] <... open resumed>) = 5 [pid 576] <... futex resumed>) = 0 [pid 577] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 576] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 577] <... futex resumed>) = 0 [pid 576] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ./strace-static-x86_64: Process 580 attached [pid 577] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 576] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 580] set_robust_list(0x5555636e06a0, 24 [pid 577] <... mmap resumed>) = 0x20000000 [pid 576] <... futex resumed>) = 0 [pid 580] <... set_robust_list resumed>) = 0 [pid 577] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 576] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 580] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 577] <... futex resumed>) = 0 [pid 576] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 580] <... prctl resumed>) = 0 [pid 577] memfd_create("syzkaller", 0 [pid 576] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 580] setpgid(0, 0 [pid 577] <... memfd_create resumed>) = 6 [pid 576] <... futex resumed>) = 0 [pid 580] <... setpgid resumed>) = 0 [pid 577] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 576] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 580] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 577] <... mmap resumed>) = 0x7fe6f03b1000 [pid 580] <... openat resumed>) = 3 [pid 577] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 579] set_robust_list(0x5555636e06a0, 24 [pid 575] <... write resumed>) = 262144 ./strace-static-x86_64: Process 581 attached [pid 580] write(3, "1000", 4 [pid 577] <... write resumed>) = 131072 [pid 581] set_robust_list(0x7fe6f87d19a0, 24 [pid 580] <... write resumed>) = 4 [pid 577] munmap(0x7fe6f03b1000, 138412032 [pid 581] <... set_robust_list resumed>) = 0 [pid 580] close(3 [pid 577] <... munmap resumed>) = 0 [pid 581] rt_sigprocmask(SIG_SETMASK, [], [pid 580] <... close resumed>) = 0 [pid 577] openat(AT_FDCWD, "/dev/loop1", O_RDWRexecuting program [pid 581] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 580] write(1, "executing program\n", 18 [pid 577] <... openat resumed>) = 7 [pid 581] memfd_create("syzkaller", 0 [pid 580] <... write resumed>) = 18 [pid 577] ioctl(7, LOOP_SET_FD, 6 [pid 581] <... memfd_create resumed>) = 3 [pid 580] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 577] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 581] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 580] <... futex resumed>) = 0 [pid 577] ioctl(7, LOOP_CLR_FD [pid 581] <... mmap resumed>) = 0x7fe6f03b1000 [pid 580] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 577] <... ioctl resumed>) = 0 [pid 580] <... rt_sigaction resumed>NULL, 8) = 0 [pid 579] <... set_robust_list resumed>) = 0 [pid 575] munmap(0x7fe6f03b1000, 138412032 [pid 580] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 580] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 580] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 580] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 580] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 577] ioctl(7, LOOP_SET_FD, 6 [pid 581] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 580] <... clone3 resumed> => {parent_tid=[582]}, 88) = 582 [pid 577] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 580] rt_sigprocmask(SIG_SETMASK, [], [pid 577] close(7 [pid 580] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 577] <... close resumed>) = 0 [pid 580] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 577] close(6 [pid 581] <... write resumed>) = 262144 [pid 580] <... futex resumed>) = 0 [pid 579] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 577] <... close resumed>) = 0 [pid 575] <... munmap resumed>) = 0 [pid 580] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 577] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 576] <... futex resumed>) = 0 [pid 577] mknod(0x20000000, 000 [pid 576] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 577] <... mknod resumed>) = -1 EEXIST (File exists) [pid 576] <... futex resumed>) = 0 [pid 577] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 576] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 577] <... futex resumed>) = 0 [pid 576] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 577] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 576] exit_group(0 [pid 577] <... futex resumed>) = ? [pid 576] <... exit_group resumed>) = ? [pid 577] +++ exited with 0 +++ [pid 576] +++ exited with 0 +++ [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=576, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 581] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 581] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 575] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 579] <... prctl resumed>) = 0 [pid 581] <... openat resumed>) = 4 [pid 581] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 581] ioctl(4, LOOP_CLR_FD) = 0 [pid 575] <... openat resumed>) = 4 ./strace-static-x86_64: Process 582 attached [pid 582] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 582] rt_sigprocmask(SIG_SETMASK, [], [pid 581] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 581] close(4) = 0 [pid 581] close(3) = 0 [pid 581] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 578] <... futex resumed>) = 0 [pid 581] chdir("./file0" [pid 578] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 581] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 578] <... futex resumed>) = 0 [pid 581] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 578] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 581] <... futex resumed>) = 0 [pid 578] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 581] creat("./bus", 000 [pid 578] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 581] <... creat resumed>) = 3 [pid 579] setpgid(0, 0 [pid 578] <... futex resumed>) = 0 [pid 575] ioctl(4, LOOP_SET_FD, 3 [pid 581] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 578] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 581] <... futex resumed>) = 0 [pid 578] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 581] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 578] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 581] <... openat resumed>) = 4 [pid 579] <... setpgid resumed>) = 0 [pid 578] <... futex resumed>) = 0 [pid 575] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 581] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 578] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 581] <... futex resumed>) = 0 [pid 579] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 578] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 575] ioctl(4, LOOP_CLR_FD [pid 303] <... restart_syscall resumed>) = 0 [pid 581] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 578] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 581] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 578] <... futex resumed>) = 0 [pid 581] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 578] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 581] <... futex resumed>) = 0 [pid 578] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 303] <... openat resumed>) = 3 [pid 581] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 578] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] ioctl(3, LOOP_CLR_FD [pid 581] <... open resumed>) = 5 [pid 578] <... futex resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 581] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 578] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] close(3 [pid 581] <... futex resumed>) = 0 [pid 578] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 303] <... close resumed>) = 0 [pid 581] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 578] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 581] <... mmap resumed>) = 0x20000000 [pid 578] <... futex resumed>) = 0 [pid 581] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 578] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 583 [pid 581] <... futex resumed>) = 0 [pid 578] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 581] memfd_create("syzkaller", 0 [pid 578] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 582] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 581] <... memfd_create resumed>) = 6 [pid 578] <... futex resumed>) = 0 [pid 582] memfd_create("syzkaller", 0 [pid 581] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 578] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 582] <... memfd_create resumed>) = 3 [pid 581] <... mmap resumed>) = 0x7fe6f03b1000 [pid 575] <... ioctl resumed>) = 0 [pid 582] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 581] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 579] <... openat resumed>) = 3 [pid 582] <... mmap resumed>) = 0x7fe6f03b1000 [pid 581] <... write resumed>) = 131072 [pid 582] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 581] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 581] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 7 [pid 581] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 581] ioctl(7, LOOP_CLR_FD) = 0 [pid 579] write(3, "1000", 4 [pid 582] <... write resumed>) = 262144 [pid 579] <... write resumed>) = 4 [pid 581] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 581] close(7) = 0 [pid 581] close(6) = 0 [pid 581] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 578] <... futex resumed>) = 0 [pid 581] mknod(0x20000000, 000 [pid 578] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 581] <... mknod resumed>) = -1 EEXIST (File exists) [pid 578] <... futex resumed>) = 0 [pid 581] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 578] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 581] <... futex resumed>) = 0 [pid 578] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 581] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 578] exit_group(0 [pid 581] <... futex resumed>) = ? [pid 579] close(3 [pid 578] <... exit_group resumed>) = ? executing program [pid 575] ioctl(4, LOOP_SET_FD, 3 [pid 581] +++ exited with 0 +++ [pid 579] <... close resumed>) = 0 [pid 578] +++ exited with 0 +++ [pid 575] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 579] write(1, "executing program\n", 18 [pid 575] close(4 [pid 579] <... write resumed>) = 18 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=578, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 575] <... close resumed>) = 0 [pid 579] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 579] <... futex resumed>) = 0 [pid 575] close(3 [pid 579] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, ./strace-static-x86_64: Process 583 attached [pid 582] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 579] <... rt_sigaction resumed>NULL, 8) = 0 [pid 575] <... close resumed>) = 0 [pid 579] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 575] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... restart_syscall resumed>) = 0 [pid 583] set_robust_list(0x5555636e06a0, 24 [pid 579] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 575] <... futex resumed>) = 1 [pid 573] <... futex resumed>) = 0 [pid 583] <... set_robust_list resumed>) = 0 [pid 582] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 579] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 575] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 573] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 583] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 582] <... openat resumed>) = 4 [pid 579] <... mmap resumed>) = 0x7fe6f87b1000 [pid 575] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 573] <... futex resumed>) = 0 [pid 583] <... prctl resumed>) = 0 [pid 582] ioctl(4, LOOP_SET_FD, 3 [pid 579] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 575] chdir("./file0" [pid 573] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 583] setpgid(0, 0 [pid 582] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 579] <... mprotect resumed>) = 0 [pid 575] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 583] <... setpgid resumed>) = 0 [pid 582] ioctl(4, LOOP_CLR_FD [pid 579] rt_sigprocmask(SIG_BLOCK, ~[], [pid 575] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... openat resumed>) = 3 [pid 583] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 582] <... ioctl resumed>) = 0 [pid 579] <... rt_sigprocmask resumed>[], 8) = 0 [pid 575] <... futex resumed>) = 1 [pid 573] <... futex resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 583] <... openat resumed>) = 3 [pid 579] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 575] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 573] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... ioctl resumed>) = 0 [pid 583] write(3, "1000", 4 [pid 575] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 573] <... futex resumed>) = 0 [pid 305] close(3 [pid 583] <... write resumed>) = 4 [pid 579] <... clone3 resumed> => {parent_tid=[584]}, 88) = 584 [pid 575] creat("./bus", 000 [pid 573] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 583] close(3 [pid 579] rt_sigprocmask(SIG_SETMASK, [], [pid 575] <... creat resumed>) = 3 [pid 305] <... close resumed>) = 0 executing program [pid 583] <... close resumed>) = 0 [pid 579] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 575] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 583] write(1, "executing program\n", 18 [pid 579] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 575] <... futex resumed>) = 1 [pid 573] <... futex resumed>) = 0 [pid 583] <... write resumed>) = 18 [pid 582] ioctl(4, LOOP_SET_FD, 3 [pid 573] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 583] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 582] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 579] <... futex resumed>) = 0 [pid 575] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 573] <... futex resumed>) = 0 [pid 583] <... futex resumed>) = 0 [pid 582] close(4 [pid 579] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 575] <... openat resumed>) = 4 [pid 573] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 585 [pid 583] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 582] <... close resumed>) = 0 [pid 575] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 573] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 583] <... rt_sigaction resumed>NULL, 8) = 0 [pid 582] close(3 [pid 575] <... futex resumed>) = 0 [pid 573] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 583] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 582] <... close resumed>) = 0 [pid 575] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 573] <... futex resumed>) = 0 [pid 583] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 582] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 575] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 573] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 584 attached [pid 583] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 582] <... futex resumed>) = 1 [pid 580] <... futex resumed>) = 0 [pid 575] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 573] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 584] set_robust_list(0x7fe6f87d19a0, 24 [pid 583] <... mmap resumed>) = 0x7fe6f87b1000 [pid 582] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 580] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 575] <... futex resumed>) = 0 [pid 573] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 584] <... set_robust_list resumed>) = 0 [pid 583] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 582] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 580] <... futex resumed>) = 0 [pid 575] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 573] <... futex resumed>) = 0 [pid 584] rt_sigprocmask(SIG_SETMASK, [], [pid 583] <... mprotect resumed>) = 0 [pid 582] chdir("./file0" [pid 580] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 573] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 585 attached [pid 584] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 583] rt_sigprocmask(SIG_BLOCK, ~[], [pid 582] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 575] <... open resumed>) = 5 [pid 585] set_robust_list(0x5555636e06a0, 24 [pid 584] memfd_create("syzkaller", 0 [pid 583] <... rt_sigprocmask resumed>[], 8) = 0 [pid 582] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 575] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 584] <... memfd_create resumed>) = 3 [pid 583] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 582] <... futex resumed>) = 1 [pid 580] <... futex resumed>) = 0 [pid 575] <... futex resumed>) = 1 [pid 573] <... futex resumed>) = 0 [pid 584] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 582] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 580] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 575] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 573] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 584] <... mmap resumed>) = 0x7fe6f03b1000 [pid 583] <... clone3 resumed> => {parent_tid=[586]}, 88) = 586 [pid 582] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 580] <... futex resumed>) = 0 [pid 575] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 573] <... futex resumed>) = 0 [pid 585] <... set_robust_list resumed>) = 0 [pid 584] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 583] rt_sigprocmask(SIG_SETMASK, [], [pid 582] creat("./bus", 000 [pid 580] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 575] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 573] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 585] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 584] <... write resumed>) = 262144 [pid 583] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 582] <... creat resumed>) = 3 [pid 583] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 582] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 575] <... mmap resumed>) = 0x20000000 [pid 583] <... futex resumed>) = 0 [pid 582] <... futex resumed>) = 1 [pid 580] <... futex resumed>) = 0 [pid 575] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 583] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 582] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 580] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 582] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 580] <... futex resumed>) = 0 [pid 575] <... futex resumed>) = 1 [pid 573] <... futex resumed>) = 0 [pid 584] munmap(0x7fe6f03b1000, 138412032 [pid 582] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 580] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 575] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 573] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 584] <... munmap resumed>) = 0 [pid 582] <... openat resumed>) = 4 [pid 575] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 573] <... futex resumed>) = 0 [pid 584] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 582] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 573] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 575] memfd_create("syzkaller", 0 [pid 584] <... openat resumed>) = 4 [pid 582] <... futex resumed>) = 1 [pid 580] <... futex resumed>) = 0 [pid 575] <... memfd_create resumed>) = 6 [pid 584] ioctl(4, LOOP_SET_FD, 3 [pid 582] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 580] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 575] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 584] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 582] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 580] <... futex resumed>) = 0 [pid 575] <... mmap resumed>) = 0x7fe6f03b1000 [pid 584] ioctl(4, LOOP_CLR_FD [pid 582] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 580] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 584] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 586 attached [pid 586] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 586] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 586] memfd_create("syzkaller", 0) = 3 [pid 575] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 586] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 575] <... write resumed>) = 131072 [pid 584] ioctl(4, LOOP_SET_FD, 3 [pid 575] munmap(0x7fe6f03b1000, 138412032 [pid 584] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 584] close(4 [pid 575] <... munmap resumed>) = 0 [pid 584] <... close resumed>) = 0 [pid 575] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 584] close(3 [pid 585] <... prctl resumed>) = 0 [pid 584] <... close resumed>) = 0 [pid 575] <... openat resumed>) = 7 [pid 584] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 575] ioctl(7, LOOP_SET_FD, 6 [pid 585] setpgid(0, 0 [pid 584] <... futex resumed>) = 1 [pid 579] <... futex resumed>) = 0 [pid 575] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 586] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 585] <... setpgid resumed>) = 0 [pid 584] chdir("./file0" [pid 579] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 575] ioctl(7, LOOP_CLR_FD [pid 585] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 584] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 579] <... futex resumed>) = 0 [pid 575] <... ioctl resumed>) = 0 [pid 579] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 585] <... openat resumed>) = 3 [pid 584] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 579] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 579] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 585] write(3, "1000", 4 [pid 579] <... futex resumed>) = 0 [pid 585] <... write resumed>) = 4 [pid 584] <... futex resumed>) = 0 [pid 579] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 585] close(3 [pid 584] creat("./bus", 000) = 3 [pid 584] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 585] <... close resumed>) = 0 [pid 584] <... futex resumed>) = 1 [pid 582] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 579] <... futex resumed>) = 0 [pid 584] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 582] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 579] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 586] <... write resumed>) = 262144 [pid 584] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 582] <... futex resumed>) = 1 [pid 580] <... futex resumed>) = 0 [pid 579] <... futex resumed>) = 0 [pid 584] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 582] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 580] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 579] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 584] <... openat resumed>) = 4 [pid 582] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 580] <... futex resumed>) = 0 [pid 575] ioctl(7, LOOP_SET_FD, 6 [pid 585] write(1, "executing program\n", 18 [pid 584] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 582] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 580] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 575] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 585] <... write resumed>) = 18 [pid 584] <... futex resumed>) = 1 [pid 582] <... open resumed>) = 5 [pid 579] <... futex resumed>) = 0 [pid 575] close(7 [pid 586] munmap(0x7fe6f03b1000, 138412032 [pid 584] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 582] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 579] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 586] <... munmap resumed>) = 0 [pid 585] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 584] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 582] <... futex resumed>) = 1 [pid 580] <... futex resumed>) = 0 [pid 579] <... futex resumed>) = 0 [pid 575] <... close resumed>) = 0 [pid 586] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 584] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 582] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 580] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 586] <... openat resumed>) = 4 [pid 585] <... futex resumed>) = 0 [pid 584] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 582] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 580] <... futex resumed>) = 0 [pid 579] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 575] close(6 [pid 586] ioctl(4, LOOP_SET_FD, 3 [pid 584] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 582] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 580] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 579] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 586] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 585] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 584] <... futex resumed>) = 0 [pid 582] <... mmap resumed>) = 0x20000000 [pid 579] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 575] <... close resumed>) = 0 [pid 586] ioctl(4, LOOP_CLR_FD [pid 585] <... rt_sigaction resumed>NULL, 8) = 0 [pid 584] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 582] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 579] <... futex resumed>) = 0 [pid 575] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 586] <... ioctl resumed>) = 0 [pid 585] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 584] <... open resumed>) = 5 [pid 582] <... futex resumed>) = 1 [pid 580] <... futex resumed>) = 0 [pid 579] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 585] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 584] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 582] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 580] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 579] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 575] <... futex resumed>) = 1 [pid 573] <... futex resumed>) = 0 [pid 585] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 584] <... futex resumed>) = 0 [pid 582] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 580] <... futex resumed>) = 0 [pid 579] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 575] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 573] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 585] <... mmap resumed>) = 0x7fe6f87b1000 [pid 584] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 582] memfd_create("syzkaller", 0 [pid 580] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 579] <... futex resumed>) = 0 [pid 575] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 573] <... futex resumed>) = 0 [pid 585] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 584] <... mmap resumed>) = 0x20000000 [pid 582] <... memfd_create resumed>) = 6 [pid 579] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 575] mknod(0x20000000, 000 [pid 573] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 586] ioctl(4, LOOP_SET_FD, 3 [pid 585] <... mprotect resumed>) = 0 [pid 584] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 582] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 579] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 575] <... mknod resumed>) = -1 EEXIST (File exists) [pid 586] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 585] rt_sigprocmask(SIG_BLOCK, ~[], [pid 584] <... futex resumed>) = 0 [pid 582] <... mmap resumed>) = 0x7fe6f03b1000 [pid 579] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 575] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 586] close(4 [pid 585] <... rt_sigprocmask resumed>[], 8) = 0 [pid 584] memfd_create("syzkaller", 0 [pid 582] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 579] <... futex resumed>) = 0 [pid 575] <... futex resumed>) = 1 [pid 573] <... futex resumed>) = 0 [pid 586] <... close resumed>) = 0 [pid 585] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 584] <... memfd_create resumed>) = 6 [pid 582] <... write resumed>) = 131072 [pid 579] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 575] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 573] exit_group(0 [pid 586] close(3 [pid 584] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 582] munmap(0x7fe6f03b1000, 138412032 [pid 575] <... futex resumed>) = ? [pid 573] <... exit_group resumed>) = ? [pid 586] <... close resumed>) = 0 [pid 584] <... mmap resumed>) = 0x7fe6f03b1000 [pid 582] <... munmap resumed>) = 0 [pid 575] +++ exited with 0 +++ [pid 573] +++ exited with 0 +++ [pid 586] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 585] <... clone3 resumed> => {parent_tid=[587]}, 88) = 587 [pid 584] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 582] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=573, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 586] <... futex resumed>) = 1 [pid 585] rt_sigprocmask(SIG_SETMASK, [], [pid 584] <... write resumed>) = 131072 [pid 583] <... futex resumed>) = 0 [pid 582] <... openat resumed>) = 7 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 586] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 585] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 584] munmap(0x7fe6f03b1000, 138412032 [pid 583] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 582] ioctl(7, LOOP_SET_FD, 6 [pid 302] <... restart_syscall resumed>) = 0 [pid 586] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 585] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 584] <... munmap resumed>) = 0 [pid 583] <... futex resumed>) = 0 [pid 582] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 586] chdir("./file0" [pid 585] <... futex resumed>) = 0 [pid 584] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 583] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 582] ioctl(7, LOOP_CLR_FD [pid 586] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 585] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 584] <... openat resumed>) = 7 [pid 582] <... ioctl resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 586] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 584] ioctl(7, LOOP_SET_FD, 6 [pid 302] <... openat resumed>) = 3 [pid 586] <... futex resumed>) = 1 [pid 584] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 583] <... futex resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 586] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 584] ioctl(7, LOOP_CLR_FD [pid 583] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... ioctl resumed>) = 0 [pid 586] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 584] <... ioctl resumed>) = 0 [pid 583] <... futex resumed>) = 0 [pid 302] close(3 [pid 586] creat("./bus", 000 [pid 583] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] <... close resumed>) = 0 [pid 586] <... creat resumed>) = 3 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 586] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 582] ioctl(7, LOOP_SET_FD, 6 [pid 586] <... futex resumed>) = 1 [pid 583] <... futex resumed>) = 0 [pid 582] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 588 [pid 586] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 583] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 582] close(7 [pid 586] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 584] ioctl(7, LOOP_SET_FD, 6 [pid 583] <... futex resumed>) = 0 [pid 582] <... close resumed>) = 0 [pid 586] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 584] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 583] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 582] close(6 [pid 586] <... openat resumed>) = 4 [pid 584] close(7 [pid 582] <... close resumed>) = 0 [pid 586] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 584] <... close resumed>) = 0 [pid 582] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 586] <... futex resumed>) = 1 [pid 584] close(6 [pid 583] <... futex resumed>) = 0 [pid 582] <... futex resumed>) = 1 [pid 580] <... futex resumed>) = 0 ./strace-static-x86_64: Process 587 attached [pid 586] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 584] <... close resumed>) = 0 [pid 583] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 582] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 580] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 587] set_robust_list(0x7fe6f87d19a0, 24 [pid 586] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 584] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 583] <... futex resumed>) = 0 [pid 582] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 580] <... futex resumed>) = 0 [pid 587] <... set_robust_list resumed>) = 0 [pid 586] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 584] <... futex resumed>) = 1 [pid 583] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 582] mknod(0x20000000, 000 [pid 580] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 579] <... futex resumed>) = 0 [pid 587] rt_sigprocmask(SIG_SETMASK, [], [pid 584] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 582] <... mknod resumed>) = -1 EEXIST (File exists) [pid 579] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 587] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 584] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 582] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 579] <... futex resumed>) = 0 [pid 587] memfd_create("syzkaller", 0 [pid 586] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 584] mknod(0x20000000, 000 [pid 582] <... futex resumed>) = 1 [pid 580] <... futex resumed>) = 0 [pid 579] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 587] <... memfd_create resumed>) = 3 [pid 586] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 584] <... mknod resumed>) = -1 EEXIST (File exists) [pid 582] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 580] exit_group(0 [pid 587] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 586] <... futex resumed>) = 1 [pid 584] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 583] <... futex resumed>) = 0 [pid 582] <... futex resumed>) = ? [pid 580] <... exit_group resumed>) = ? [pid 587] <... mmap resumed>) = 0x7fe6f03b1000 [pid 586] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 584] <... futex resumed>) = 1 [pid 583] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 582] +++ exited with 0 +++ [pid 580] +++ exited with 0 +++ [pid 579] <... futex resumed>) = 0 ./strace-static-x86_64: Process 588 attached [pid 586] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 584] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 583] <... futex resumed>) = 0 [pid 579] exit_group(0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=580, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 588] set_robust_list(0x5555636e06a0, 24 [pid 587] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 586] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 584] <... futex resumed>) = ? [pid 583] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 579] <... exit_group resumed>) = ? [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 588] <... set_robust_list resumed>) = 0 [pid 587] <... write resumed>) = 262144 [pid 586] <... open resumed>) = 5 [pid 584] +++ exited with 0 +++ [pid 306] <... restart_syscall resumed>) = 0 [pid 588] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 586] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 588] <... prctl resumed>) = 0 [pid 586] <... futex resumed>) = 1 [pid 583] <... futex resumed>) = 0 [pid 579] +++ exited with 0 +++ [pid 588] setpgid(0, 0 [pid 586] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 583] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=579, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 588] <... setpgid resumed>) = 0 [pid 587] munmap(0x7fe6f03b1000, 138412032 [pid 586] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 583] <... futex resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 588] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 587] <... munmap resumed>) = 0 [pid 586] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 583] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] ioctl(3, LOOP_CLR_FD [pid 588] <... openat resumed>) = 3 [pid 587] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 586] <... mmap resumed>) = 0x20000000 [pid 306] <... ioctl resumed>) = 0 [pid 588] write(3, "1000", 4 [pid 587] <... openat resumed>) = 4 [pid 586] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] close(3 [pid 588] <... write resumed>) = 4 [pid 587] ioctl(4, LOOP_SET_FD, 3 [pid 586] <... futex resumed>) = 1 [pid 583] <... futex resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 588] close(3 [pid 587] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 586] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 583] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 588] <... close resumed>) = 0 [pid 587] ioctl(4, LOOP_CLR_FD [pid 586] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) executing program [pid 583] <... futex resumed>) = 0 [pid 588] write(1, "executing program\n", 18 [pid 587] <... ioctl resumed>) = 0 [pid 586] memfd_create("syzkaller", 0 [pid 583] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 589 [pid 588] <... write resumed>) = 18 [pid 586] <... memfd_create resumed>) = 6 [pid 588] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 586] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 588] <... futex resumed>) = 0 [pid 586] <... mmap resumed>) = 0x7fe6f03b1000 [pid 588] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 586] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 588] <... rt_sigaction resumed>NULL, 8) = 0 [pid 587] ioctl(4, LOOP_SET_FD, 3 [pid 586] <... write resumed>) = 131072 [pid 588] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 587] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 586] munmap(0x7fe6f03b1000, 138412032 [pid 588] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 587] close(4 [pid 586] <... munmap resumed>) = 0 [pid 588] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 587] <... close resumed>) = 0 [pid 586] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 588] <... mmap resumed>) = 0x7fe6f87b1000 [pid 587] close(3 [pid 586] <... openat resumed>) = 7 [pid 588] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 587] <... close resumed>) = 0 [pid 586] ioctl(7, LOOP_SET_FD, 6 [pid 588] <... mprotect resumed>) = 0 [pid 587] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 586] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 588] rt_sigprocmask(SIG_BLOCK, ~[], [pid 587] <... futex resumed>) = 1 [pid 586] ioctl(7, LOOP_CLR_FD [pid 585] <... futex resumed>) = 0 [pid 588] <... rt_sigprocmask resumed>[], 8) = 0 [pid 587] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 586] <... ioctl resumed>) = 0 [pid 585] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 588] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 587] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 585] <... futex resumed>) = 0 [pid 587] chdir("./file0" [pid 585] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 588] <... clone3 resumed> => {parent_tid=[590]}, 88) = 590 [pid 588] rt_sigprocmask(SIG_SETMASK, [], [pid 587] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 588] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 588] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 587] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 588] <... futex resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 588] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 587] <... futex resumed>) = 1 [pid 585] <... futex resumed>) = 0 [pid 587] creat("./bus", 000 [pid 585] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 587] <... creat resumed>) = 3 [pid 586] ioctl(7, LOOP_SET_FD, 6 [pid 585] <... futex resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 587] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 586] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 585] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... openat resumed>) = 3 [pid 587] <... futex resumed>) = 0 [pid 586] close(7 [pid 585] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 304] ioctl(3, LOOP_CLR_FD [pid 587] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 586] <... close resumed>) = 0 [pid 585] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... ioctl resumed>) = 0 [pid 587] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 586] close(6 [pid 585] <... futex resumed>) = 0 [pid 304] close(3 [pid 587] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 586] <... close resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 587] <... openat resumed>) = 4 [pid 586] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 587] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 586] <... futex resumed>) = 1 [pid 585] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 583] <... futex resumed>) = 0 ./strace-static-x86_64: Process 589 attached [pid 587] <... futex resumed>) = 0 [pid 586] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 585] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 583] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 591 [pid 589] set_robust_list(0x5555636e06a0, 24 [pid 587] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 586] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 585] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 583] <... futex resumed>) = 0 [pid 589] <... set_robust_list resumed>) = 0 [pid 587] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 586] mknod(0x20000000, 000 [pid 585] <... futex resumed>) = 0 [pid 583] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 589] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 587] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 586] <... mknod resumed>) = -1 EEXIST (File exists) [pid 585] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 589] <... prctl resumed>) = 0 [pid 586] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 589] setpgid(0, 0 [pid 586] <... futex resumed>) = 1 [pid 583] <... futex resumed>) = 0 [pid 589] <... setpgid resumed>) = 0 [pid 586] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 583] exit_group(0 [pid 589] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 586] <... futex resumed>) = ? [pid 583] <... exit_group resumed>) = ? [pid 589] <... openat resumed>) = 3 [pid 586] +++ exited with 0 +++ [pid 583] +++ exited with 0 +++ [pid 589] write(3, "1000", 4 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=583, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 589] <... write resumed>) = 4 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 589] close(3executing program ) = 0 [pid 589] write(1, "executing program\n", 18) = 18 [pid 589] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 589] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 589] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 589] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 589] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 589] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 589] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[592]}, 88) = 592 [pid 589] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 589] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 589] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 587] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 587] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 585] <... futex resumed>) = 0 [pid 587] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 585] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 587] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 585] <... futex resumed>) = 0 ./strace-static-x86_64: Process 591 attached [pid 587] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 591] set_robust_list(0x5555636e06a0, 24 [pid 587] <... open resumed>) = 5 [pid 585] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 591] <... set_robust_list resumed>) = 0 [pid 587] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 585] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 591] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 587] <... futex resumed>) = 0 [pid 585] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 591] <... prctl resumed>) = 0 [pid 587] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 591] setpgid(0, 0 [pid 587] <... mmap resumed>) = 0x20000000 [pid 585] <... futex resumed>) = 0 [pid 591] <... setpgid resumed>) = 0 [pid 587] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 585] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 591] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 587] <... futex resumed>) = 0 [pid 585] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 591] <... openat resumed>) = 3 [pid 587] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 585] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 591] write(3, "1000", 4 [pid 587] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 585] <... futex resumed>) = 0 [pid 591] <... write resumed>) = 4 [pid 587] memfd_create("syzkaller", 0 [pid 585] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 591] close(3 [pid 587] <... memfd_create resumed>) = 6 executing program [pid 591] <... close resumed>) = 0 [pid 587] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 591] write(1, "executing program\n", 18 [pid 587] <... mmap resumed>) = 0x7fe6f03b1000 [pid 591] <... write resumed>) = 18 [pid 587] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 303] <... restart_syscall resumed>) = 0 [pid 591] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 587] <... write resumed>) = 131072 [pid 591] <... futex resumed>) = 0 [pid 587] munmap(0x7fe6f03b1000, 138412032 [pid 591] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 587] <... munmap resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 591] <... rt_sigaction resumed>NULL, 8) = 0 [pid 587] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 303] <... openat resumed>) = 3 [pid 591] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 587] <... openat resumed>) = 7 [pid 303] ioctl(3, LOOP_CLR_FD [pid 591] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 587] ioctl(7, LOOP_SET_FD, 6 [pid 303] <... ioctl resumed>) = 0 [pid 591] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 587] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] close(3 [pid 591] <... mmap resumed>) = 0x7fe6f87b1000 [pid 587] ioctl(7, LOOP_CLR_FD [pid 303] <... close resumed>) = 0 [pid 591] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 587] <... ioctl resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 591] <... mprotect resumed>) = 0 [pid 591] rt_sigprocmask(SIG_BLOCK, ~[], [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 593 [pid 591] <... rt_sigprocmask resumed>[], 8) = 0 [pid 591] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[594]}, 88) = 594 [pid 591] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 591] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 592 attached ) = 0 [pid 592] set_robust_list(0x7fe6f87d19a0, 24 [pid 591] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 592] <... set_robust_list resumed>) = 0 [pid 587] ioctl(7, LOOP_SET_FD, 6 [pid 592] rt_sigprocmask(SIG_SETMASK, [], [pid 587] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 592] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 587] close(7 [pid 592] memfd_create("syzkaller", 0 [pid 587] <... close resumed>) = 0 [pid 592] <... memfd_create resumed>) = 3 [pid 587] close(6 [pid 592] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 587] <... close resumed>) = 0 [pid 592] <... mmap resumed>) = 0x7fe6f03b1000 [pid 587] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 592] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 587] <... futex resumed>) = 1 [pid 585] <... futex resumed>) = 0 [pid 587] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 585] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 587] <... futex resumed>) = 0 [pid 585] <... futex resumed>) = 1 [pid 587] mknod(0x20000000, 000 [pid 585] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 587] <... mknod resumed>) = -1 EEXIST (File exists) [pid 587] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 585] <... futex resumed>) = 0 [pid 587] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 585] exit_group(0 [pid 587] <... futex resumed>) = ? [pid 585] <... exit_group resumed>) = ? [pid 587] +++ exited with 0 +++ [pid 592] <... write resumed>) = 262144 [pid 592] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 585] +++ exited with 0 +++ [pid 592] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=585, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 592] <... openat resumed>) = 4 [pid 592] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 592] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 594 attached [pid 594] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 594] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 594] memfd_create("syzkaller", 0 [pid 592] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 592] close(4) = 0 [pid 592] close(3) = 0 [pid 594] <... memfd_create resumed>) = 3 [pid 594] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 594] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 592] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 589] <... futex resumed>) = 0 [pid 589] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 589] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 592] <... futex resumed>) = 1 [pid 592] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 592] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 589] <... futex resumed>) = 0 [pid 589] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 589] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 592] <... futex resumed>) = 1 [pid 592] creat("./bus", 000) = 3 [pid 592] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 589] <... futex resumed>) = 0 [pid 589] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 589] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 592] <... futex resumed>) = 1 [pid 592] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 592] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 589] <... futex resumed>) = 0 [pid 589] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 589] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 592] <... futex resumed>) = 1 [pid 592] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL) = -1 ENOSPC (No space left on device) [pid 592] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 589] <... futex resumed>) = 0 [pid 589] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 589] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 592] <... futex resumed>) = 1 [pid 592] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 592] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 589] <... futex resumed>) = 0 [pid 589] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 589] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 592] <... futex resumed>) = 1 [pid 592] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 305] <... restart_syscall resumed>) = 0 [pid 592] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 592] <... futex resumed>) = 1 [pid 589] <... futex resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 592] memfd_create("syzkaller", 0 [pid 589] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] ioctl(3, LOOP_CLR_FD [pid 592] <... memfd_create resumed>) = 6 [pid 589] <... futex resumed>) = 0 [pid 592] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 589] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 305] <... ioctl resumed>) = 0 [pid 592] <... mmap resumed>) = 0x7fe6f03b1000 [pid 305] close(3) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 594] <... write resumed>) = 262144 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 595 [pid 592] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072./strace-static-x86_64: Process 590 attached [pid 590] set_robust_list(0x7fe6f87d19a0, 24 [pid 594] munmap(0x7fe6f03b1000, 138412032 [pid 590] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 593 attached [pid 590] rt_sigprocmask(SIG_SETMASK, [], [pid 594] <... munmap resumed>) = 0 [pid 593] set_robust_list(0x5555636e06a0, 24 [pid 590] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 592] <... write resumed>) = 131072 [pid 594] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 594] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 594] ioctl(4, LOOP_CLR_FD) = 0 [pid 592] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 592] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 7 [pid 592] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 592] ioctl(7, LOOP_CLR_FD) = 0 [pid 594] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 594] close(4) = 0 [pid 590] memfd_create("syzkaller", 0 [pid 593] <... set_robust_list resumed>) = 0 [pid 594] close(3) = 0 [pid 592] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 592] close(7 [pid 594] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 592] <... close resumed>) = 0 [pid 594] <... futex resumed>) = 1 [pid 592] close(6 [pid 591] <... futex resumed>) = 0 [pid 594] chdir("./file0" [pid 592] <... close resumed>) = 0 [pid 591] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 595 attached [pid 594] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 592] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 591] <... futex resumed>) = 0 [pid 595] set_robust_list(0x5555636e06a0, 24 [pid 594] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 592] <... futex resumed>) = 1 [pid 591] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 589] <... futex resumed>) = 0 [pid 595] <... set_robust_list resumed>) = 0 [pid 594] <... futex resumed>) = 0 [pid 592] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 591] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 589] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 595] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 594] creat("./bus", 000 [pid 592] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 591] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 589] <... futex resumed>) = 0 [pid 595] <... prctl resumed>) = 0 [pid 594] <... creat resumed>) = 3 [pid 592] mknod(0x20000000, 000 [pid 591] <... futex resumed>) = 0 [pid 589] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 595] setpgid(0, 0 [pid 594] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 592] <... mknod resumed>) = -1 EEXIST (File exists) [pid 591] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 595] <... setpgid resumed>) = 0 [pid 594] <... futex resumed>) = 0 [pid 592] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 591] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 595] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 594] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 592] <... futex resumed>) = 1 [pid 591] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 589] <... futex resumed>) = 0 [pid 595] <... openat resumed>) = 3 [pid 594] <... openat resumed>) = 4 [pid 593] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 592] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 591] <... futex resumed>) = 0 [pid 590] <... memfd_create resumed>) = 3 [pid 589] exit_group(0 [pid 595] write(3, "1000", 4 [pid 594] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 593] <... prctl resumed>) = 0 [pid 592] <... futex resumed>) = ? [pid 591] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 589] <... exit_group resumed>) = ? [pid 595] <... write resumed>) = 4 [pid 594] <... futex resumed>) = 0 [pid 592] +++ exited with 0 +++ [pid 591] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 589] +++ exited with 0 +++ [pid 595] close(3 [pid 594] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 591] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=589, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 595] <... close resumed>) = 0 [pid 593] setpgid(0, 0 [pid 591] <... futex resumed>) = 0 executing program [pid 590] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 595] write(1, "executing program\n", 18 [pid 591] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 590] <... mmap resumed>) = 0x7fe6f03b1000 [pid 595] <... write resumed>) = 18 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 595] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... openat resumed>) = 3 [pid 595] <... futex resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 595] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 306] <... ioctl resumed>) = 0 [pid 595] <... rt_sigaction resumed>NULL, 8) = 0 [pid 306] close(3 [pid 595] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 306] <... close resumed>) = 0 [pid 595] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 595] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 596 [pid 595] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 595] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 595] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[597]}, 88) = 597 [pid 595] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 593] <... setpgid resumed>) = 0 [pid 590] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 595] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 595] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 596 attached [pid 596] set_robust_list(0x5555636e06a0, 24) = 0 [pid 593] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 596] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 596] setpgid(0, 0) = 0 [pid 596] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 590] <... write resumed>) = 262144 [pid 593] <... openat resumed>) = 3 [pid 590] munmap(0x7fe6f03b1000, 138412032 [pid 596] write(3, "1000", 4) = 4 [pid 596] close(3) = 0 [pid 593] write(3, "1000", 4) = 4 [pid 590] <... munmap resumed>) = 0 [pid 596] write(1, "executing program\n", 18executing program ) = 18 [pid 596] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 596] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 596] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 596] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 593] close(3 [pid 590] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 593] <... close resumed>) = 0 executing program [pid 593] write(1, "executing program\n", 18 [pid 590] <... openat resumed>) = 4 [pid 593] <... write resumed>) = 18 [pid 593] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] ioctl(4, LOOP_SET_FD, 3 [pid 593] <... futex resumed>) = 0 [pid 593] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 590] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 593] <... rt_sigaction resumed>NULL, 8) = 0 [pid 590] ioctl(4, LOOP_CLR_FD [pid 593] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 590] <... ioctl resumed>) = 0 [pid 593] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 593] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 596] <... mmap resumed>) = 0x7fe6f87b1000 [pid 596] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 593] rt_sigprocmask(SIG_BLOCK, ~[], [pid 596] rt_sigprocmask(SIG_BLOCK, ~[], [pid 593] <... rt_sigprocmask resumed>[], 8) = 0 [pid 593] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 596] <... rt_sigprocmask resumed>[], 8) = 0 [pid 596] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 593] <... clone3 resumed> => {parent_tid=[598]}, 88) = 598 [pid 590] ioctl(4, LOOP_SET_FD, 3 [pid 593] rt_sigprocmask(SIG_SETMASK, [], [pid 590] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 593] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 590] close(4 [pid 593] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 594] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 593] <... futex resumed>) = 0 [pid 590] <... close resumed>) = 0 [pid 594] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 593] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 594] <... futex resumed>) = 1 [pid 591] <... futex resumed>) = 0 [pid 590] close(3 [pid 594] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 591] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 594] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 591] <... futex resumed>) = 0 [pid 594] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 591] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 594] <... open resumed>) = 5 [pid 594] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 591] <... futex resumed>) = 0 [pid 594] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 591] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 597 attached [pid 594] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 591] <... futex resumed>) = 0 [pid 597] set_robust_list(0x7fe6f87d19a0, 24 [pid 596] <... clone3 resumed> => {parent_tid=[599]}, 88) = 599 [pid 594] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 591] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 597] <... set_robust_list resumed>) = 0 [pid 596] rt_sigprocmask(SIG_SETMASK, [], [pid 594] <... mmap resumed>) = 0x20000000 [pid 597] rt_sigprocmask(SIG_SETMASK, [], [pid 596] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 594] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 597] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 596] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 594] <... futex resumed>) = 1 [pid 591] <... futex resumed>) = 0 [pid 597] memfd_create("syzkaller", 0 [pid 596] <... futex resumed>) = 0 [pid 594] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 591] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] <... close resumed>) = 0 [pid 597] <... memfd_create resumed>) = 3 [pid 596] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 594] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 591] <... futex resumed>) = 0 [pid 597] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 594] memfd_create("syzkaller", 0 [pid 591] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 590] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 597] <... mmap resumed>) = 0x7fe6f03b1000 [pid 594] <... memfd_create resumed>) = 6 [pid 590] <... futex resumed>) = 1 [pid 588] <... futex resumed>) = 0 [pid 594] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 588] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 594] <... mmap resumed>) = 0x7fe6f03b1000 [pid 588] <... futex resumed>) = 0 [pid 594] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 590] chdir("./file0" [pid 588] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 597] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 594] <... write resumed>) = 131072 [pid 594] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 594] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 7 [pid 594] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 590] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 594] ioctl(7, LOOP_CLR_FD [pid 597] <... write resumed>) = 262144 [pid 594] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 599 attached [pid 599] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 599] rt_sigprocmask(SIG_SETMASK, [], [pid 597] munmap(0x7fe6f03b1000, 138412032 [pid 599] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 597] <... munmap resumed>) = 0 [pid 594] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 594] close(7) = 0 [pid 594] close(6) = 0 [pid 594] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 591] <... futex resumed>) = 0 [pid 594] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 591] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 599] memfd_create("syzkaller", 0 [pid 594] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 591] <... futex resumed>) = 0 [pid 599] <... memfd_create resumed>) = 3 [pid 597] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 594] mknod(0x20000000, 000 [pid 591] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 599] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 597] <... openat resumed>) = 4 [pid 594] <... mknod resumed>) = -1 EEXIST (File exists) [pid 599] <... mmap resumed>) = 0x7fe6f03b1000 [pid 597] ioctl(4, LOOP_SET_FD, 3 [pid 594] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 597] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 594] <... futex resumed>) = 1 [pid 591] <... futex resumed>) = 0 [pid 590] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 597] ioctl(4, LOOP_CLR_FD [pid 594] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 591] exit_group(0 [pid 597] <... ioctl resumed>) = 0 [pid 594] <... futex resumed>) = ? [pid 591] <... exit_group resumed>) = ? [pid 594] +++ exited with 0 +++ [pid 591] +++ exited with 0 +++ [pid 590] <... futex resumed>) = 1 [pid 588] <... futex resumed>) = 0 [pid 590] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 588] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 588] <... futex resumed>) = 0 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=591, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 590] creat("./bus", 000 [pid 588] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 590] <... creat resumed>) = 3 [pid 599] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 590] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 597] ioctl(4, LOOP_SET_FD, 3 [pid 590] <... futex resumed>) = 1 [pid 588] <... futex resumed>) = 0 [pid 597] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 590] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 588] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 597] close(4 [pid 590] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 588] <... futex resumed>) = 0 [pid 597] <... close resumed>) = 0 [pid 590] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 588] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 597] close(3 [pid 590] <... openat resumed>) = 4 [pid 599] <... write resumed>) = 262144 [pid 597] <... close resumed>) = 0 [pid 590] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 597] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] <... futex resumed>) = 1 [pid 588] <... futex resumed>) = 0 [pid 597] <... futex resumed>) = 1 [pid 595] <... futex resumed>) = 0 [pid 590] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 588] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 597] chdir("./file0" [pid 595] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 588] <... futex resumed>) = 0 [pid 597] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 595] <... futex resumed>) = 0 [pid 590] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 588] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 597] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 595] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 599] munmap(0x7fe6f03b1000, 138412032 [pid 597] <... futex resumed>) = 0 [pid 595] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 599] <... munmap resumed>) = 0 [pid 597] creat("./bus", 000 [pid 595] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 599] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 597] <... creat resumed>) = 3 [pid 595] <... futex resumed>) = 0 [pid 599] <... openat resumed>) = 4 [pid 597] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 595] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 599] ioctl(4, LOOP_SET_FD, 3 [pid 597] <... futex resumed>) = 0 [pid 595] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 599] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 597] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 595] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 599] ioctl(4, LOOP_CLR_FD [pid 597] <... openat resumed>) = 4 [pid 595] <... futex resumed>) = 0 [pid 599] <... ioctl resumed>) = 0 [pid 597] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 595] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 597] <... futex resumed>) = 0 [pid 595] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 597] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 595] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 597] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 595] <... futex resumed>) = 0 [pid 597] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 595] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 598 attached [pid 598] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 597] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 590] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 598] rt_sigprocmask(SIG_SETMASK, [], [pid 597] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 598] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 597] <... futex resumed>) = 1 [pid 595] <... futex resumed>) = 0 [pid 588] <... futex resumed>) = 0 [pid 599] ioctl(4, LOOP_SET_FD, 3 [pid 598] memfd_create("syzkaller", 0 [pid 597] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 595] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] <... futex resumed>) = 1 [pid 588] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 599] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 598] <... memfd_create resumed>) = 3 [pid 597] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 595] <... futex resumed>) = 0 [pid 590] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 588] <... futex resumed>) = 0 [pid 599] close(4 [pid 598] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 597] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 595] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 588] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 599] <... close resumed>) = 0 [pid 598] <... mmap resumed>) = 0x7fe6f03b1000 [pid 597] <... open resumed>) = 5 [pid 590] <... open resumed>) = 5 [pid 304] <... restart_syscall resumed>) = 0 [pid 599] close(3 [pid 598] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 597] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 599] <... close resumed>) = 0 [pid 597] <... futex resumed>) = 1 [pid 595] <... futex resumed>) = 0 [pid 590] <... futex resumed>) = 1 [pid 588] <... futex resumed>) = 0 [pid 599] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 597] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 595] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 588] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 599] <... futex resumed>) = 1 [pid 597] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 596] <... futex resumed>) = 0 [pid 595] <... futex resumed>) = 0 [pid 588] <... futex resumed>) = 0 [pid 304] <... openat resumed>) = 3 [pid 599] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 598] <... write resumed>) = 262144 [pid 597] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 596] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 595] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 590] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 588] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] ioctl(3, LOOP_CLR_FD [pid 599] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 597] <... mmap resumed>) = 0x20000000 [pid 596] <... futex resumed>) = 0 [pid 590] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 304] <... ioctl resumed>) = 0 [pid 599] chdir("./file0" [pid 597] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 596] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] close(3 [pid 599] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 597] <... futex resumed>) = 1 [pid 595] <... futex resumed>) = 0 [pid 590] <... mmap resumed>) = 0x20000000 [pid 304] <... close resumed>) = 0 [pid 599] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 597] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 595] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 599] <... futex resumed>) = 1 [pid 598] munmap(0x7fe6f03b1000, 138412032 [pid 597] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 596] <... futex resumed>) = 0 [pid 595] <... futex resumed>) = 0 [pid 590] <... futex resumed>) = 1 [pid 588] <... futex resumed>) = 0 [pid 599] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 598] <... munmap resumed>) = 0 [pid 597] memfd_create("syzkaller", 0 [pid 596] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 595] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 590] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 588] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 600 [pid 599] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 598] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 597] <... memfd_create resumed>) = 6 [pid 596] <... futex resumed>) = 0 [pid 590] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 588] <... futex resumed>) = 0 [pid 599] creat("./bus", 000 [pid 598] <... openat resumed>) = 4 [pid 597] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 596] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 588] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 599] <... creat resumed>) = 3 [pid 598] ioctl(4, LOOP_SET_FD, 3 [pid 597] <... mmap resumed>) = 0x7fe6f03b1000 [pid 590] memfd_create("syzkaller", 0 [pid 599] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 598] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 597] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 599] <... futex resumed>) = 1 [pid 598] ioctl(4, LOOP_CLR_FD [pid 597] <... write resumed>) = 131072 [pid 596] <... futex resumed>) = 0 [pid 590] <... memfd_create resumed>) = 6 [pid 599] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 598] <... ioctl resumed>) = 0 [pid 597] munmap(0x7fe6f03b1000, 138412032 [pid 596] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 599] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 597] <... munmap resumed>) = 0 [pid 596] <... futex resumed>) = 0 [pid 599] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 597] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 596] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 590] <... mmap resumed>) = 0x7fe6f03b1000 [pid 599] <... openat resumed>) = 4 [pid 597] <... openat resumed>) = 7 [pid 599] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 597] ioctl(7, LOOP_SET_FD, 6 [pid 599] <... futex resumed>) = 1 [pid 597] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 596] <... futex resumed>) = 0 [pid 599] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 597] ioctl(7, LOOP_CLR_FD [pid 596] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 599] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 598] ioctl(4, LOOP_SET_FD, 3 [pid 597] <... ioctl resumed>) = 0 [pid 596] <... futex resumed>) = 0 [pid 599] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 598] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 596] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 599] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 598] close(4 [pid 590] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 599] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 598] <... close resumed>) = 0 [pid 599] <... futex resumed>) = 1 [pid 598] close(3 [pid 596] <... futex resumed>) = 0 [pid 599] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 598] <... close resumed>) = 0 [pid 596] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] <... write resumed>) = 131072 [pid 599] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 598] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 597] ioctl(7, LOOP_SET_FD, 6 [pid 596] <... futex resumed>) = 0 [pid 590] munmap(0x7fe6f03b1000, 138412032 [pid 599] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 598] <... futex resumed>) = 1 [pid 597] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 596] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 593] <... futex resumed>) = 0 [pid 599] <... open resumed>) = 5 [pid 598] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 597] close(7 [pid 593] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] <... munmap resumed>) = 0 [pid 599] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 598] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 597] <... close resumed>) = 0 [pid 593] <... futex resumed>) = 0 [pid 590] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 600 attached [pid 599] <... futex resumed>) = 1 [pid 598] chdir("./file0" [pid 597] close(6 [pid 596] <... futex resumed>) = 0 [pid 593] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 590] <... openat resumed>) = 7 [pid 600] set_robust_list(0x5555636e06a0, 24 [pid 599] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 598] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 597] <... close resumed>) = 0 [pid 596] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] ioctl(7, LOOP_SET_FD, 6 [pid 600] <... set_robust_list resumed>) = 0 [pid 599] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 598] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 597] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 596] <... futex resumed>) = 0 [pid 590] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 600] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 599] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 598] <... futex resumed>) = 1 [pid 597] <... futex resumed>) = 1 [pid 596] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 595] <... futex resumed>) = 0 [pid 593] <... futex resumed>) = 0 [pid 590] ioctl(7, LOOP_CLR_FD [pid 600] <... prctl resumed>) = 0 [pid 599] <... mmap resumed>) = 0x20000000 [pid 598] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 597] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 595] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 593] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] <... ioctl resumed>) = 0 [pid 600] setpgid(0, 0 [pid 599] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 598] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 597] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 595] <... futex resumed>) = 0 [pid 593] <... futex resumed>) = 0 [pid 600] <... setpgid resumed>) = 0 [pid 599] <... futex resumed>) = 1 [pid 598] creat("./bus", 000 [pid 597] mknod(0x20000000, 000 [pid 596] <... futex resumed>) = 0 [pid 595] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 593] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 600] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 599] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 598] <... creat resumed>) = 3 [pid 597] <... mknod resumed>) = -1 EEXIST (File exists) [pid 596] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 600] <... openat resumed>) = 3 [pid 599] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 598] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 597] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 596] <... futex resumed>) = 0 [pid 600] write(3, "1000", 4 [pid 599] memfd_create("syzkaller", 0 [pid 598] <... futex resumed>) = 1 [pid 597] <... futex resumed>) = 1 [pid 596] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 595] <... futex resumed>) = 0 [pid 593] <... futex resumed>) = 0 [pid 590] ioctl(7, LOOP_SET_FD, 6 [pid 600] <... write resumed>) = 4 [pid 599] <... memfd_create resumed>) = 6 [pid 598] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 597] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 595] exit_group(0 [pid 593] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 600] close(3 [pid 599] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 598] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 597] <... futex resumed>) = ? [pid 595] <... exit_group resumed>) = ? [pid 600] <... close resumed>) = 0 [pid 599] <... mmap resumed>) = 0x7fe6f03b1000 [pid 598] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000executing program [pid 597] +++ exited with 0 +++ [pid 595] +++ exited with 0 +++ [pid 593] <... futex resumed>) = 0 [pid 590] close(7 [pid 600] write(1, "executing program\n", 18 [pid 599] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 598] <... openat resumed>) = 4 [pid 593] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 600] <... write resumed>) = 18 [pid 599] <... write resumed>) = 131072 [pid 598] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 593] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 590] <... close resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=595, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 600] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 599] munmap(0x7fe6f03b1000, 138412032 [pid 598] <... futex resumed>) = 0 [pid 593] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] close(6 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 600] <... futex resumed>) = 0 [pid 599] <... munmap resumed>) = 0 [pid 598] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 593] <... futex resumed>) = 0 [pid 600] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 599] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 598] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 593] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 590] <... close resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 600] <... rt_sigaction resumed>NULL, 8) = 0 [pid 599] <... openat resumed>) = 7 [pid 598] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 593] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 590] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 600] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 599] ioctl(7, LOOP_SET_FD, 6 [pid 598] <... futex resumed>) = 0 [pid 593] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 600] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 599] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 598] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 593] <... futex resumed>) = 0 [pid 590] <... futex resumed>) = 1 [pid 588] <... futex resumed>) = 0 [pid 600] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 599] ioctl(7, LOOP_CLR_FD [pid 598] <... open resumed>) = 5 [pid 593] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 590] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 588] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 600] <... mmap resumed>) = 0x7fe6f87b1000 [pid 599] <... ioctl resumed>) = 0 [pid 598] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 593] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 590] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 588] <... futex resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 600] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 598] <... futex resumed>) = 0 [pid 593] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] mknod(0x20000000, 000 [pid 588] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] ioctl(3, LOOP_CLR_FD [pid 600] <... mprotect resumed>) = 0 [pid 598] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 600] rt_sigprocmask(SIG_BLOCK, ~[], [pid 598] <... mmap resumed>) = 0x20000000 [pid 593] <... futex resumed>) = 0 [pid 590] <... mknod resumed>) = -1 EEXIST (File exists) [pid 305] <... ioctl resumed>) = 0 [pid 600] <... rt_sigprocmask resumed>[], 8) = 0 [pid 598] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 593] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 590] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] close(3 [pid 600] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 599] ioctl(7, LOOP_SET_FD, 6 [pid 598] <... futex resumed>) = 0 [pid 593] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 590] <... futex resumed>) = 1 [pid 588] <... futex resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 599] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 598] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 593] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 590] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 588] exit_group(0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 600] <... clone3 resumed> => {parent_tid=[601]}, 88) = 601 [pid 599] close(7 [pid 598] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 593] <... futex resumed>) = 0 [pid 588] <... exit_group resumed>) = ? [pid 600] rt_sigprocmask(SIG_SETMASK, [], [pid 599] <... close resumed>) = 0 [pid 598] memfd_create("syzkaller", 0 [pid 593] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 590] <... futex resumed>) = ? [pid 600] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 599] close(6 [pid 598] <... memfd_create resumed>) = 6 [pid 600] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 599] <... close resumed>) = 0 [pid 598] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 590] +++ exited with 0 +++ [pid 588] +++ exited with 0 +++ [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 602 [pid 600] <... futex resumed>) = 0 [pid 599] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 598] <... mmap resumed>) = 0x7fe6f03b1000 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=588, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 600] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 599] <... futex resumed>) = 1 [pid 598] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 596] <... futex resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 599] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 598] <... write resumed>) = 131072 [pid 596] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 599] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 598] munmap(0x7fe6f03b1000, 138412032 [pid 596] <... futex resumed>) = 0 [pid 599] mknod(0x20000000, 000 [pid 598] <... munmap resumed>) = 0 [pid 596] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 599] <... mknod resumed>) = -1 EEXIST (File exists) [pid 598] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 599] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 598] <... openat resumed>) = 7 [pid 599] <... futex resumed>) = 1 [pid 598] ioctl(7, LOOP_SET_FD, 6 [pid 596] <... futex resumed>) = 0 [pid 599] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 598] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 596] exit_group(0 [pid 599] <... futex resumed>) = ? [pid 598] ioctl(7, LOOP_CLR_FD [pid 596] <... exit_group resumed>) = ? [pid 599] +++ exited with 0 +++ [pid 598] <... ioctl resumed>) = 0 [pid 596] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=596, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 601 attached [pid 601] set_robust_list(0x7fe6f87d19a0, 24 [pid 302] <... restart_syscall resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 302] ioctl(3, LOOP_CLR_FD) = 0 [pid 302] close(3) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 598] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 603 [pid 598] close(7) = 0 [pid 598] close(6) = 0 [pid 598] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 593] <... futex resumed>) = 0 [pid 598] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 593] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 598] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 593] <... futex resumed>) = 0 [pid 598] mknod(0x20000000, 000 [pid 593] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 598] <... mknod resumed>) = -1 EEXIST (File exists) [pid 601] <... set_robust_list resumed>) = 0 [pid 598] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 601] rt_sigprocmask(SIG_SETMASK, [], [pid 598] <... futex resumed>) = 1 [pid 593] <... futex resumed>) = 0 [pid 601] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 598] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 593] exit_group(0 [pid 601] memfd_create("syzkaller", 0 [pid 598] <... futex resumed>) = ? [pid 593] <... exit_group resumed>) = ? [pid 601] <... memfd_create resumed>) = 3 [pid 598] +++ exited with 0 +++ [pid 593] +++ exited with 0 +++ [pid 601] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=593, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 601] <... mmap resumed>) = 0x7fe6f03b1000 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 601] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 ./strace-static-x86_64: Process 602 attached [pid 602] set_robust_list(0x5555636e06a0, 24) = 0 ./strace-static-x86_64: Process 603 attached [pid 602] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 601] munmap(0x7fe6f03b1000, 138412032 [pid 603] set_robust_list(0x5555636e06a0, 24 [pid 601] <... munmap resumed>) = 0 [pid 603] <... set_robust_list resumed>) = 0 [pid 603] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 601] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 306] <... restart_syscall resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 602] <... prctl resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 303] <... restart_syscall resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 306] <... close resumed>) = 0 [pid 303] <... openat resumed>) = 3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 604 [pid 303] close(3) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 605 [pid 601] <... openat resumed>) = 4 [pid 603] <... prctl resumed>) = 0 [pid 603] setpgid(0, 0) = 0 [pid 603] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 601] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 601] ioctl(4, LOOP_CLR_FD) = 0 [pid 603] <... openat resumed>) = 3 [pid 603] write(3, "1000", 4) = 4 executing program [pid 603] close(3) = 0 [pid 603] write(1, "executing program\n", 18) = 18 [pid 603] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 602] setpgid(0, 0 [pid 603] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 601] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 601] close(4) = 0 [pid 601] close(3) = 0 [pid 603] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 603] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 603] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 603] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 603] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 601] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 600] <... futex resumed>) = 0 [pid 600] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 601] <... futex resumed>) = 1 [pid 600] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 603] <... clone3 resumed> => {parent_tid=[606]}, 88) = 606 [pid 601] chdir("./file0" [pid 603] rt_sigprocmask(SIG_SETMASK, [], [pid 601] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 603] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 601] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 603] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 601] <... futex resumed>) = 1 [pid 600] <... futex resumed>) = 0 [pid 603] <... futex resumed>) = 0 [pid 601] creat("./bus", 000 [pid 600] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 603] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 602] <... setpgid resumed>) = 0 [pid 601] <... creat resumed>) = 3 [pid 600] <... futex resumed>) = 0 [pid 601] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 600] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 601] <... futex resumed>) = 0 [pid 600] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 601] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 600] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 601] <... openat resumed>) = 4 [pid 600] <... futex resumed>) = 0 [pid 601] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 600] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 601] <... futex resumed>) = 0 [pid 600] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ./strace-static-x86_64: Process 605 attached [pid 601] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 600] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 605] set_robust_list(0x5555636e06a0, 24 [pid 602] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 601] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 600] <... futex resumed>) = 0 [pid 605] <... set_robust_list resumed>) = 0 [pid 602] <... openat resumed>) = 3 [pid 601] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 600] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 604 attached [pid 605] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 601] <... futex resumed>) = 0 [pid 600] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 605] <... prctl resumed>) = 0 [pid 604] set_robust_list(0x5555636e06a0, 24 [pid 601] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 600] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 605] setpgid(0, 0 [pid 604] <... set_robust_list resumed>) = 0 [pid 601] <... open resumed>) = 5 [pid 600] <... futex resumed>) = 0 [pid 605] <... setpgid resumed>) = 0 [pid 604] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 602] write(3, "1000", 4 [pid 601] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 600] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 605] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 604] <... prctl resumed>) = 0 [pid 602] <... write resumed>) = 4 [pid 601] <... futex resumed>) = 0 [pid 600] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 605] <... openat resumed>) = 3 [pid 604] setpgid(0, 0 [pid 602] close(3 [pid 601] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 600] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 605] write(3, "1000", 4 [pid 604] <... setpgid resumed>) = 0 [pid 602] <... close resumed>) = 0 [pid 601] <... mmap resumed>) = 0x20000000 [pid 600] <... futex resumed>) = 0 executing program [pid 605] <... write resumed>) = 4 [pid 604] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 602] write(1, "executing program\n", 18 [pid 601] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 600] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 605] close(3 [pid 604] <... openat resumed>) = 3 [pid 602] <... write resumed>) = 18 [pid 601] <... futex resumed>) = 0 [pid 600] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 605] <... close resumed>) = 0 [pid 604] write(3, "1000", 4 [pid 602] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 601] memfd_create("syzkaller", 0 [pid 600] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 605] write(1, "executing program\n", 18 [pid 604] <... write resumed>) = 4 [pid 602] <... futex resumed>) = 0 [pid 601] <... memfd_create resumed>) = 6 [pid 600] <... futex resumed>) = 0 [pid 605] <... write resumed>) = 18 [pid 604] close(3 [pid 602] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 601] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 600] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 605] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 604] <... close resumed>) = 0 [pid 602] <... rt_sigaction resumed>NULL, 8) = 0 [pid 601] <... mmap resumed>) = 0x7fe6f03b1000 executing program [pid 605] <... futex resumed>) = 0 [pid 604] write(1, "executing program\n", 18 [pid 602] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 601] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 605] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 604] <... write resumed>) = 18 [pid 602] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 601] <... write resumed>) = 131072 [pid 605] <... rt_sigaction resumed>NULL, 8) = 0 [pid 604] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 602] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 601] munmap(0x7fe6f03b1000, 138412032 [pid 605] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 604] <... futex resumed>) = 0 [pid 602] <... mmap resumed>) = 0x7fe6f87b1000 [pid 601] <... munmap resumed>) = 0 [pid 605] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 604] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 601] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 605] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 604] <... rt_sigaction resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 606 attached [pid 605] <... mmap resumed>) = 0x7fe6f87b1000 [pid 604] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 602] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 601] <... openat resumed>) = 7 [pid 605] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 604] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 602] <... mprotect resumed>) = 0 [pid 606] set_robust_list(0x7fe6f87d19a0, 24 [pid 605] <... mprotect resumed>) = 0 [pid 604] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 601] ioctl(7, LOOP_SET_FD, 6 [pid 606] <... set_robust_list resumed>) = 0 [pid 605] rt_sigprocmask(SIG_BLOCK, ~[], [pid 604] <... mmap resumed>) = 0x7fe6f87b1000 [pid 602] rt_sigprocmask(SIG_BLOCK, ~[], [pid 605] <... rt_sigprocmask resumed>[], 8) = 0 [pid 604] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 602] <... rt_sigprocmask resumed>[], 8) = 0 [pid 601] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 606] rt_sigprocmask(SIG_SETMASK, [], [pid 605] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 604] <... mprotect resumed>) = 0 [pid 602] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 606] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 604] rt_sigprocmask(SIG_BLOCK, ~[], [pid 601] ioctl(7, LOOP_CLR_FD [pid 606] memfd_create("syzkaller", 0 [pid 605] <... clone3 resumed> => {parent_tid=[607]}, 88) = 607 [pid 604] <... rt_sigprocmask resumed>[], 8) = 0 [pid 601] <... ioctl resumed>) = 0 [pid 605] rt_sigprocmask(SIG_SETMASK, [], [pid 604] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 602] <... clone3 resumed> => {parent_tid=[608]}, 88) = 608 [pid 606] <... memfd_create resumed>) = 3 [pid 605] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 602] rt_sigprocmask(SIG_SETMASK, [], [pid 605] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 604] <... clone3 resumed> => {parent_tid=[609]}, 88) = 609 [pid 602] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 606] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 605] <... futex resumed>) = 0 [pid 604] rt_sigprocmask(SIG_SETMASK, [], [pid 602] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 605] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 604] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 602] <... futex resumed>) = 0 [pid 606] <... mmap resumed>) = 0x7fe6f03b1000 [pid 604] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 602] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 604] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 601] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 601] close(7) = 0 [pid 601] close(6) = 0 [pid 601] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 600] <... futex resumed>) = 0 [pid 601] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 600] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 601] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 600] <... futex resumed>) = 0 [pid 601] mknod(0x20000000, 000 [pid 600] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 601] <... mknod resumed>) = -1 EEXIST (File exists) [pid 601] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 606] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 601] <... futex resumed>) = 1 [pid 600] <... futex resumed>) = 0 [pid 601] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 600] exit_group(0 [pid 601] <... futex resumed>) = ? [pid 600] <... exit_group resumed>) = ? [pid 601] +++ exited with 0 +++ [pid 600] +++ exited with 0 +++ [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=600, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 607 attached [pid 607] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 607] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 607] memfd_create("syzkaller", 0) = 3 [pid 607] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 304] <... restart_syscall resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 304] ioctl(3, LOOP_CLR_FD) = 0 [pid 304] close(3) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 610 [pid 606] <... write resumed>) = 262144 ./strace-static-x86_64: Process 609 attached [pid 609] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 609] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 609] memfd_create("syzkaller", 0) = 3 [pid 609] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 609] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 607] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 609] <... write resumed>) = 262144 ./strace-static-x86_64: Process 610 attached [pid 610] set_robust_list(0x5555636e06a0, 24 [pid 607] munmap(0x7fe6f03b1000, 138412032 [pid 610] <... set_robust_list resumed>) = 0 [pid 610] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 607] <... munmap resumed>) = 0 [pid 610] <... prctl resumed>) = 0 [pid 610] setpgid(0, 0 [pid 607] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 610] <... setpgid resumed>) = 0 [pid 610] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 607] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 607] ioctl(4, LOOP_CLR_FD) = 0 [pid 610] <... openat resumed>) = 3 [pid 610] write(3, "1000", 4 [pid 609] munmap(0x7fe6f03b1000, 138412032 [pid 610] <... write resumed>) = 4 [pid 609] <... munmap resumed>) = 0 [pid 610] close(3) = 0 executing program [pid 610] write(1, "executing program\n", 18) = 18 [pid 610] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 609] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 607] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 607] close(4) = 0 [pid 607] close(3 [pid 610] <... futex resumed>) = 0 [pid 609] <... openat resumed>) = 4 [pid 610] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 610] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 609] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 610] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 609] ioctl(4, LOOP_CLR_FD [pid 610] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 609] <... ioctl resumed>) = 0 [pid 610] <... mmap resumed>) = 0x7fe6f87b1000 [pid 610] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 610] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 607] <... close resumed>) = 0 [pid 610] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[611]}, 88) = 611 [pid 610] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 607] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 609] ioctl(4, LOOP_SET_FD, 3 [pid 610] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 609] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 607] <... futex resumed>) = 1 [pid 606] munmap(0x7fe6f03b1000, 138412032 [pid 605] <... futex resumed>) = 0 [pid 610] <... futex resumed>) = 0 [pid 609] close(4 [pid 607] chdir("./file0" [pid 605] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 610] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 609] <... close resumed>) = 0 [pid 607] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 606] <... munmap resumed>) = 0 [pid 605] <... futex resumed>) = 0 [pid 609] close(3 [pid 607] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 605] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 609] <... close resumed>) = 0 [pid 607] <... futex resumed>) = 0 [pid 605] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 609] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 607] creat("./bus", 000 [pid 605] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 609] <... futex resumed>) = 1 [pid 607] <... creat resumed>) = 3 [pid 605] <... futex resumed>) = 0 [pid 604] <... futex resumed>) = 0 [pid 609] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 607] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 605] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 604] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 608 attached [pid 609] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 607] <... futex resumed>) = 0 [pid 606] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 605] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 604] <... futex resumed>) = 0 [pid 609] chdir("./file0" [pid 607] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 605] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 604] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 609] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 607] <... openat resumed>) = 4 [pid 605] <... futex resumed>) = 0 [pid 609] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 607] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 605] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 609] <... futex resumed>) = 1 [pid 607] <... futex resumed>) = 0 [pid 605] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 604] <... futex resumed>) = 0 [pid 609] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 607] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 605] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 604] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 609] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 607] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 605] <... futex resumed>) = 0 [pid 604] <... futex resumed>) = 0 [pid 609] creat("./bus", 000 [pid 608] set_robust_list(0x7fe6f87d19a0, 24 [pid 607] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 606] <... openat resumed>) = 4 [pid 605] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 604] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 609] <... creat resumed>) = 3 [pid 607] <... futex resumed>) = 0 [pid 605] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 609] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 607] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 605] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 609] <... futex resumed>) = 1 [pid 607] <... open resumed>) = 5 [pid 605] <... futex resumed>) = 0 [pid 604] <... futex resumed>) = 0 [pid 609] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 607] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 605] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 604] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 609] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 607] <... futex resumed>) = 0 [pid 605] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 604] <... futex resumed>) = 0 [pid 609] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 607] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 605] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 604] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 609] <... openat resumed>) = 4 [pid 607] <... mmap resumed>) = 0x20000000 [pid 605] <... futex resumed>) = 0 [pid 609] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 607] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 605] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 609] <... futex resumed>) = 1 [pid 607] <... futex resumed>) = 0 [pid 605] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 604] <... futex resumed>) = 0 ./strace-static-x86_64: Process 611 attached [pid 609] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 607] memfd_create("syzkaller", 0 [pid 605] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 604] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 611] set_robust_list(0x7fe6f87d19a0, 24 [pid 609] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 607] <... memfd_create resumed>) = 6 [pid 605] <... futex resumed>) = 0 [pid 604] <... futex resumed>) = 0 [pid 611] <... set_robust_list resumed>) = 0 [pid 609] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 608] <... set_robust_list resumed>) = 0 [pid 607] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 606] ioctl(4, LOOP_SET_FD, 3 [pid 605] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 604] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 611] rt_sigprocmask(SIG_SETMASK, [], [pid 609] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 608] rt_sigprocmask(SIG_SETMASK, [], [pid 607] <... mmap resumed>) = 0x7fe6f03b1000 [pid 606] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 611] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 609] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 608] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 607] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 606] ioctl(4, LOOP_CLR_FD [pid 611] memfd_create("syzkaller", 0 [pid 609] <... futex resumed>) = 1 [pid 604] <... futex resumed>) = 0 [pid 611] <... memfd_create resumed>) = 3 [pid 609] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 608] memfd_create("syzkaller", 0 [pid 607] <... write resumed>) = 131072 [pid 606] <... ioctl resumed>) = 0 [pid 604] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 611] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 609] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 608] <... memfd_create resumed>) = 3 [pid 607] munmap(0x7fe6f03b1000, 138412032 [pid 604] <... futex resumed>) = 0 [pid 611] <... mmap resumed>) = 0x7fe6f03b1000 [pid 609] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 608] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 607] <... munmap resumed>) = 0 [pid 604] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 611] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 609] <... open resumed>) = 5 [pid 608] <... mmap resumed>) = 0x7fe6f03b1000 [pid 607] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 609] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 607] <... openat resumed>) = 7 [pid 606] ioctl(4, LOOP_SET_FD, 3 [pid 604] <... futex resumed>) = 0 [pid 609] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 607] ioctl(7, LOOP_SET_FD, 6 [pid 606] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 604] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 609] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 607] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 606] close(4 [pid 604] <... futex resumed>) = 0 [pid 609] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 608] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 607] ioctl(7, LOOP_CLR_FD [pid 606] <... close resumed>) = 0 [pid 604] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 609] <... mmap resumed>) = 0x20000000 [pid 607] <... ioctl resumed>) = 0 [pid 611] <... write resumed>) = 262144 [pid 609] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 604] <... futex resumed>) = 0 [pid 611] munmap(0x7fe6f03b1000, 138412032 [pid 609] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 608] <... write resumed>) = 262144 [pid 606] close(3 [pid 604] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 611] <... munmap resumed>) = 0 [pid 609] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 604] <... futex resumed>) = 0 [pid 611] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 609] memfd_create("syzkaller", 0 [pid 604] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 611] <... openat resumed>) = 4 [pid 609] <... memfd_create resumed>) = 6 [pid 608] munmap(0x7fe6f03b1000, 138412032 [pid 606] <... close resumed>) = 0 [pid 611] ioctl(4, LOOP_SET_FD, 3 [pid 609] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 607] ioctl(7, LOOP_SET_FD, 6 [pid 606] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 611] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 609] <... mmap resumed>) = 0x7fe6f03b1000 [pid 608] <... munmap resumed>) = 0 [pid 607] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 606] <... futex resumed>) = 1 [pid 603] <... futex resumed>) = 0 [pid 611] ioctl(4, LOOP_CLR_FD [pid 609] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 608] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 607] close(7 [pid 606] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 603] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 611] <... ioctl resumed>) = 0 [pid 609] <... write resumed>) = 131072 [pid 608] <... openat resumed>) = 4 [pid 607] <... close resumed>) = 0 [pid 606] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 603] <... futex resumed>) = 0 [pid 609] munmap(0x7fe6f03b1000, 138412032 [pid 608] ioctl(4, LOOP_SET_FD, 3 [pid 607] close(6 [pid 606] chdir("./file0" [pid 603] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 609] <... munmap resumed>) = 0 [pid 608] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 607] <... close resumed>) = 0 [pid 606] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 609] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 607] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 606] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 609] <... openat resumed>) = 7 [pid 608] ioctl(4, LOOP_CLR_FD [pid 607] <... futex resumed>) = 1 [pid 605] <... futex resumed>) = 0 [pid 606] <... futex resumed>) = 1 [pid 603] <... futex resumed>) = 0 [pid 611] ioctl(4, LOOP_SET_FD, 3 [pid 609] ioctl(7, LOOP_SET_FD, 6 [pid 608] <... ioctl resumed>) = 0 [pid 607] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 606] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 605] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 603] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 611] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 609] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 607] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 606] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 605] <... futex resumed>) = 0 [pid 603] <... futex resumed>) = 0 [pid 611] close(4 [pid 609] ioctl(7, LOOP_CLR_FD [pid 607] mknod(0x20000000, 000 [pid 606] creat("./bus", 000 [pid 605] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 603] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 611] <... close resumed>) = 0 [pid 609] <... ioctl resumed>) = 0 [pid 607] <... mknod resumed>) = -1 EEXIST (File exists) [pid 606] <... creat resumed>) = 3 [pid 611] close(3 [pid 607] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 606] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 611] <... close resumed>) = 0 [pid 607] <... futex resumed>) = 1 [pid 605] <... futex resumed>) = 0 [pid 606] <... futex resumed>) = 1 [pid 603] <... futex resumed>) = 0 [pid 611] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 608] ioctl(4, LOOP_SET_FD, 3 [pid 607] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 606] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 605] exit_group(0 [pid 603] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 611] <... futex resumed>) = 1 [pid 610] <... futex resumed>) = 0 [pid 608] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 607] <... futex resumed>) = ? [pid 606] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 605] <... exit_group resumed>) = ? [pid 603] <... futex resumed>) = 0 [pid 611] chdir("./file0" [pid 610] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 608] close(4 [pid 607] +++ exited with 0 +++ [pid 606] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 605] +++ exited with 0 +++ [pid 603] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 611] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 610] <... futex resumed>) = 0 [pid 609] ioctl(7, LOOP_SET_FD, 6 [pid 608] <... close resumed>) = 0 [pid 606] <... openat resumed>) = 4 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=605, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 611] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 610] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 609] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 608] close(3 [pid 606] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 611] <... futex resumed>) = 0 [pid 610] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 609] close(7 [pid 611] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 610] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 609] <... close resumed>) = 0 [pid 608] <... close resumed>) = 0 [pid 606] <... futex resumed>) = 1 [pid 603] <... futex resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 611] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 610] <... futex resumed>) = 0 [pid 609] close(6 [pid 608] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 606] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 603] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... openat resumed>) = 3 [pid 611] creat("./bus", 000 [pid 610] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 609] <... close resumed>) = 0 [pid 608] <... futex resumed>) = 1 [pid 606] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 603] <... futex resumed>) = 0 [pid 602] <... futex resumed>) = 0 [pid 303] ioctl(3, LOOP_CLR_FD [pid 611] <... creat resumed>) = 3 [pid 609] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 608] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 606] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 603] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 602] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... ioctl resumed>) = 0 [pid 611] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 609] <... futex resumed>) = 1 [pid 608] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 606] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 604] <... futex resumed>) = 0 [pid 602] <... futex resumed>) = 0 [pid 303] close(3 [pid 611] <... futex resumed>) = 1 [pid 610] <... futex resumed>) = 0 [pid 609] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 608] chdir("./file0" [pid 606] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 604] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 602] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... close resumed>) = 0 [pid 611] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 610] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 609] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 608] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 606] <... futex resumed>) = 1 [pid 604] <... futex resumed>) = 0 [pid 603] <... futex resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 611] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 610] <... futex resumed>) = 0 [pid 609] mknod(0x20000000, 000 [pid 608] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 606] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 604] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 603] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 611] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 610] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 609] <... mknod resumed>) = -1 EEXIST (File exists) [pid 608] <... futex resumed>) = 1 [pid 606] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 603] <... futex resumed>) = 0 [pid 602] <... futex resumed>) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 612 [pid 611] <... openat resumed>) = 4 [pid 609] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 603] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 611] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 609] <... futex resumed>) = 1 [pid 604] <... futex resumed>) = 0 [pid 611] <... futex resumed>) = 1 [pid 610] <... futex resumed>) = 0 [pid 609] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 604] exit_group(0 [pid 611] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 610] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 609] <... futex resumed>) = ? [pid 604] <... exit_group resumed>) = ? [pid 611] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 610] <... futex resumed>) = 0 [pid 609] +++ exited with 0 +++ [pid 608] creat("./bus", 000 [pid 606] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 604] +++ exited with 0 +++ [pid 602] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 611] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 610] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 608] <... creat resumed>) = 3 [pid 606] <... open resumed>) = 5 [pid 602] <... futex resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=604, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 611] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 608] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 606] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 602] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 611] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 608] <... futex resumed>) = 0 [pid 606] <... futex resumed>) = 1 [pid 603] <... futex resumed>) = 0 [pid 602] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 611] <... futex resumed>) = 1 [pid 610] <... futex resumed>) = 0 [pid 608] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 606] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 603] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 602] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 611] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 610] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 608] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 606] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 603] <... futex resumed>) = 0 [pid 602] <... futex resumed>) = 0 [pid 611] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 610] <... futex resumed>) = 0 [pid 608] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 606] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 603] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 602] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 611] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 610] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 606] <... mmap resumed>) = 0x20000000 [pid 611] <... open resumed>) = 5 [pid 608] <... openat resumed>) = 4 [pid 306] <... restart_syscall resumed>) = 0 [pid 611] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 608] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 606] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 611] <... futex resumed>) = 1 [pid 610] <... futex resumed>) = 0 [pid 608] <... futex resumed>) = 1 [pid 606] <... futex resumed>) = 1 [pid 603] <... futex resumed>) = 0 [pid 602] <... futex resumed>) = 0 [pid 611] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 610] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 608] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 606] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 603] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 602] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR./strace-static-x86_64: Process 612 attached [pid 611] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 610] <... futex resumed>) = 0 [pid 608] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 606] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 603] <... futex resumed>) = 0 [pid 602] <... futex resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 612] set_robust_list(0x5555636e06a0, 24 [pid 611] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 610] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 608] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 606] memfd_create("syzkaller", 0 [pid 603] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 602] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] ioctl(3, LOOP_CLR_FD [pid 612] <... set_robust_list resumed>) = 0 [pid 611] <... mmap resumed>) = 0x20000000 [pid 606] <... memfd_create resumed>) = 6 [pid 306] <... ioctl resumed>) = 0 [pid 612] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 611] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 606] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 306] close(3 [pid 612] <... prctl resumed>) = 0 [pid 611] <... futex resumed>) = 1 [pid 610] <... futex resumed>) = 0 [pid 606] <... mmap resumed>) = 0x7fe6f03b1000 [pid 306] <... close resumed>) = 0 [pid 612] setpgid(0, 0 [pid 611] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 610] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 612] <... setpgid resumed>) = 0 [pid 611] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 610] <... futex resumed>) = 0 [pid 612] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 611] memfd_create("syzkaller", 0 [pid 610] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 606] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 613 [pid 612] <... openat resumed>) = 3 [pid 611] <... memfd_create resumed>) = 6 [pid 612] write(3, "1000", 4 [pid 611] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 612] <... write resumed>) = 4 [pid 611] <... mmap resumed>) = 0x7fe6f03b1000 [pid 606] <... write resumed>) = 131072 [pid 612] close(3 [pid 611] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 606] munmap(0x7fe6f03b1000, 138412032executing program [pid 612] <... close resumed>) = 0 [pid 611] <... write resumed>) = 131072 [pid 606] <... munmap resumed>) = 0 [pid 612] write(1, "executing program\n", 18 [pid 611] munmap(0x7fe6f03b1000, 138412032 [pid 606] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 612] <... write resumed>) = 18 [pid 611] <... munmap resumed>) = 0 [pid 612] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 611] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 606] <... openat resumed>) = 7 [pid 612] <... futex resumed>) = 0 [pid 611] <... openat resumed>) = 7 [pid 606] ioctl(7, LOOP_SET_FD, 6 [pid 612] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 611] ioctl(7, LOOP_SET_FD, 6 [pid 612] <... rt_sigaction resumed>NULL, 8) = 0 [pid 611] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 606] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 612] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 611] ioctl(7, LOOP_CLR_FD [pid 606] ioctl(7, LOOP_CLR_FD [pid 612] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 611] <... ioctl resumed>) = 0 [pid 612] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 608] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 606] <... ioctl resumed>) = 0 [pid 612] <... mmap resumed>) = 0x7fe6f87b1000 [pid 608] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 612] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 608] <... futex resumed>) = 1 [pid 602] <... futex resumed>) = 0 [pid 608] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 602] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 608] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 602] <... futex resumed>) = 0 [pid 608] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 602] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 612] <... mprotect resumed>) = 0 [pid 608] <... open resumed>) = 5 [pid 612] rt_sigprocmask(SIG_BLOCK, ~[], [pid 608] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 612] <... rt_sigprocmask resumed>[], 8) = 0 [pid 611] ioctl(7, LOOP_SET_FD, 6 [pid 612] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 611] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 608] <... futex resumed>) = 1 [pid 602] <... futex resumed>) = 0 [pid 611] close(7 [pid 608] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 606] ioctl(7, LOOP_SET_FD, 6 [pid 602] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 612] <... clone3 resumed> => {parent_tid=[614]}, 88) = 614 [pid 611] <... close resumed>) = 0 [pid 608] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 606] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 602] <... futex resumed>) = 0 [pid 612] rt_sigprocmask(SIG_SETMASK, [], [pid 611] close(6 [pid 608] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 606] close(7 [pid 602] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 612] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 611] <... close resumed>) = 0 [pid 608] <... mmap resumed>) = 0x20000000 [pid 606] <... close resumed>) = 0 [pid 612] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 611] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 608] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 606] close(6 [pid 612] <... futex resumed>) = 0 [pid 611] <... futex resumed>) = 1 [pid 610] <... futex resumed>) = 0 [pid 608] <... futex resumed>) = 1 [pid 602] <... futex resumed>) = 0 ./strace-static-x86_64: Process 613 attached [pid 612] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 611] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 610] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 608] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 606] <... close resumed>) = 0 [pid 602] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 613] set_robust_list(0x5555636e06a0, 24 [pid 611] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 610] <... futex resumed>) = 0 [pid 608] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 613] <... set_robust_list resumed>) = 0 [pid 611] mknod(0x20000000, 000 [pid 610] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 613] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 611] <... mknod resumed>) = -1 EEXIST (File exists) [pid 602] <... futex resumed>) = 0 [pid 613] <... prctl resumed>) = 0 [pid 611] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 608] memfd_create("syzkaller", 0 [pid 606] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 602] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 613] setpgid(0, 0 [pid 611] <... futex resumed>) = 1 [pid 610] <... futex resumed>) = 0 [pid 608] <... memfd_create resumed>) = 6 [pid 606] <... futex resumed>) = 1 [pid 603] <... futex resumed>) = 0 [pid 613] <... setpgid resumed>) = 0 [pid 611] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 610] exit_group(0 [pid 608] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 606] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 603] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 613] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 611] <... futex resumed>) = ? [pid 610] <... exit_group resumed>) = ? [pid 608] <... mmap resumed>) = 0x7fe6f03b1000 [pid 603] <... futex resumed>) = 0 [pid 613] <... openat resumed>) = 3 [pid 611] +++ exited with 0 +++ [pid 610] +++ exited with 0 +++ [pid 606] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 603] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 613] write(3, "1000", 4 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=610, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- ./strace-static-x86_64: Process 614 attached [pid 613] <... write resumed>) = 4 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 614] set_robust_list(0x7fe6f87d19a0, 24 [pid 613] close(3executing program [pid 614] <... set_robust_list resumed>) = 0 [pid 613] <... close resumed>) = 0 [pid 614] rt_sigprocmask(SIG_SETMASK, [], [pid 613] write(1, "executing program\n", 18 [pid 608] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 606] mknod(0x20000000, 000 [pid 614] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 613] <... write resumed>) = 18 [pid 614] memfd_create("syzkaller", 0 [pid 613] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 608] <... write resumed>) = 131072 [pid 606] <... mknod resumed>) = -1 EEXIST (File exists) [pid 608] munmap(0x7fe6f03b1000, 138412032 [pid 606] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 614] <... memfd_create resumed>) = 3 [pid 613] <... futex resumed>) = 0 [pid 608] <... munmap resumed>) = 0 [pid 606] <... futex resumed>) = 1 [pid 603] <... futex resumed>) = 0 [pid 614] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 613] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 608] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 606] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 603] exit_group(0 [pid 614] <... mmap resumed>) = 0x7fe6f03b1000 [pid 613] <... rt_sigaction resumed>NULL, 8) = 0 [pid 608] <... openat resumed>) = 7 [pid 606] <... futex resumed>) = ? [pid 603] <... exit_group resumed>) = ? [pid 614] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 613] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 608] ioctl(7, LOOP_SET_FD, 6 [pid 606] +++ exited with 0 +++ [pid 603] +++ exited with 0 +++ [pid 613] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 608] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=603, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 613] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 608] ioctl(7, LOOP_CLR_FD [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 613] <... mmap resumed>) = 0x7fe6f87b1000 [pid 608] <... ioctl resumed>) = 0 [pid 613] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 613] rt_sigprocmask(SIG_BLOCK, ~[], [pid 302] <... restart_syscall resumed>) = 0 [pid 613] <... rt_sigprocmask resumed>[], 8) = 0 [pid 613] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 613] <... clone3 resumed> => {parent_tid=[615]}, 88) = 615 [pid 304] <... restart_syscall resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 613] rt_sigprocmask(SIG_SETMASK, [], [pid 608] ioctl(7, LOOP_SET_FD, 6 [pid 302] ioctl(3, LOOP_CLR_FD [pid 613] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 608] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 302] <... ioctl resumed>) = 0 [pid 613] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 608] close(7 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 302] close(3 [pid 614] <... write resumed>) = 262144 [pid 613] <... futex resumed>) = 0 [pid 608] <... close resumed>) = 0 [pid 304] <... openat resumed>) = 3 [pid 302] <... close resumed>) = 0 [pid 613] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 608] close(6 [pid 304] ioctl(3, LOOP_CLR_FD [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 614] munmap(0x7fe6f03b1000, 138412032 [pid 608] <... close resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 614] <... munmap resumed>) = 0 [pid 608] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] close(3 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 616 [pid 614] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 304] <... close resumed>) = 0 [pid 614] <... openat resumed>) = 4 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 614] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 617 [pid 614] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 615 attached [pid 615] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 615] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 615] memfd_create("syzkaller", 0) = 3 [pid 614] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 614] close(4) = 0 [pid 614] close(3) = 0 [pid 608] <... futex resumed>) = 1 [pid 602] <... futex resumed>) = 0 [pid 608] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 602] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 608] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 602] <... futex resumed>) = 0 [pid 608] mknod(0x20000000, 000 [pid 602] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 608] <... mknod resumed>) = -1 EEXIST (File exists) [pid 614] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 608] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 614] <... futex resumed>) = 1 [pid 612] <... futex resumed>) = 0 [pid 608] <... futex resumed>) = 1 [pid 602] <... futex resumed>) = 0 [pid 614] chdir("./file0" [pid 612] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 608] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 614] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 612] <... futex resumed>) = 0 [pid 602] exit_group(0 [pid 614] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 612] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 615] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 614] <... futex resumed>) = 0 [pid 612] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 608] <... futex resumed>) = ? [pid 602] <... exit_group resumed>) = ? [pid 615] <... mmap resumed>) = 0x7fe6f03b1000 [pid 614] creat("./bus", 000 [pid 612] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 615] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 614] <... creat resumed>) = 3 [pid 612] <... futex resumed>) = 0 [pid 608] +++ exited with 0 +++ [pid 602] +++ exited with 0 +++ [pid 614] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 612] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 614] <... futex resumed>) = 0 [pid 612] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 614] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 612] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=602, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 616 attached [pid 614] <... openat resumed>) = 4 [pid 612] <... futex resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 616] set_robust_list(0x5555636e06a0, 24 [pid 614] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 612] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 616] <... set_robust_list resumed>) = 0 [pid 614] <... futex resumed>) = 0 [pid 612] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 305] <... restart_syscall resumed>) = 0 [pid 616] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 614] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 612] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 616] <... prctl resumed>) = 0 [pid 612] <... futex resumed>) = 0 [pid 616] setpgid(0, 0 [pid 612] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 616] <... setpgid resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 616] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 305] <... openat resumed>) = 3 [pid 616] <... openat resumed>) = 3 [pid 305] ioctl(3, LOOP_CLR_FD [pid 616] write(3, "1000", 4 [pid 305] <... ioctl resumed>) = 0 [pid 616] <... write resumed>) = 4 [pid 305] close(3 [pid 616] close(3 [pid 305] <... close resumed>) = 0 executing program [pid 616] <... close resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 616] write(1, "executing program\n", 18) = 18 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 618 [pid 616] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 616] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 615] <... write resumed>) = 262144 [pid 616] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 616] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 615] munmap(0x7fe6f03b1000, 138412032 [pid 616] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 615] <... munmap resumed>) = 0 [pid 616] <... mprotect resumed>) = 0 [pid 615] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 616] rt_sigprocmask(SIG_BLOCK, ~[], [pid 615] <... openat resumed>) = 4 [pid 616] <... rt_sigprocmask resumed>[], 8) = 0 [pid 615] ioctl(4, LOOP_SET_FD, 3 [pid 616] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 615] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 615] ioctl(4, LOOP_CLR_FD [pid 616] <... clone3 resumed> => {parent_tid=[619]}, 88) = 619 [pid 615] <... ioctl resumed>) = 0 [pid 616] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 616] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 614] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 616] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 614] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 612] <... futex resumed>) = 0 [pid 614] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 612] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 614] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 612] <... futex resumed>) = 0 [pid 614] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 612] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 614] <... open resumed>) = 5 [pid 615] ioctl(4, LOOP_SET_FD, 3 [pid 614] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 615] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 614] <... futex resumed>) = 1 [pid 612] <... futex resumed>) = 0 [pid 615] close(4 [pid 614] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 612] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 615] <... close resumed>) = 0 [pid 614] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 612] <... futex resumed>) = 0 [pid 615] close(3 [pid 614] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 612] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 615] <... close resumed>) = 0 [pid 614] <... mmap resumed>) = 0x20000000 [pid 615] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 614] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 615] <... futex resumed>) = 1 [pid 614] <... futex resumed>) = 1 [pid 613] <... futex resumed>) = 0 [pid 612] <... futex resumed>) = 0 [pid 615] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 614] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 613] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 612] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 615] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 614] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 613] <... futex resumed>) = 0 [pid 612] <... futex resumed>) = 0 [pid 615] chdir("./file0" [pid 614] memfd_create("syzkaller", 0 [pid 613] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 612] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 615] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 614] <... memfd_create resumed>) = 6 [pid 615] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 614] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 615] <... futex resumed>) = 1 [pid 614] <... mmap resumed>) = 0x7fe6f03b1000 [pid 613] <... futex resumed>) = 0 ./strace-static-x86_64: Process 618 attached ./strace-static-x86_64: Process 617 attached [pid 615] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 614] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 613] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 615] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 614] <... write resumed>) = 131072 [pid 613] <... futex resumed>) = 0 [pid 615] creat("./bus", 000 [pid 614] munmap(0x7fe6f03b1000, 138412032 [pid 613] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 615] <... creat resumed>) = 3 [pid 614] <... munmap resumed>) = 0 [pid 615] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 614] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 618] set_robust_list(0x5555636e06a0, 24 [pid 617] set_robust_list(0x5555636e06a0, 24 [pid 615] <... futex resumed>) = 1 [pid 614] <... openat resumed>) = 7 [pid 613] <... futex resumed>) = 0 [pid 618] <... set_robust_list resumed>) = 0 [pid 617] <... set_robust_list resumed>) = 0 [pid 615] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 614] ioctl(7, LOOP_SET_FD, 6 [pid 613] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 618] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 617] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 615] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 614] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 613] <... futex resumed>) = 0 [pid 618] <... prctl resumed>) = 0 [pid 617] <... prctl resumed>) = 0 [pid 615] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 614] ioctl(7, LOOP_CLR_FD [pid 613] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 619 attached [pid 618] setpgid(0, 0 [pid 617] setpgid(0, 0 [pid 615] <... openat resumed>) = 4 [pid 614] <... ioctl resumed>) = 0 [pid 619] set_robust_list(0x7fe6f87d19a0, 24 [pid 618] <... setpgid resumed>) = 0 [pid 617] <... setpgid resumed>) = 0 [pid 615] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 619] <... set_robust_list resumed>) = 0 [pid 615] <... futex resumed>) = 1 [pid 613] <... futex resumed>) = 0 [pid 619] rt_sigprocmask(SIG_SETMASK, [], [pid 615] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 613] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 619] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 615] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 613] <... futex resumed>) = 0 [pid 619] memfd_create("syzkaller", 0 [pid 615] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 613] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 619] <... memfd_create resumed>) = 3 [pid 619] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 614] ioctl(7, LOOP_SET_FD, 6 [pid 619] <... mmap resumed>) = 0x7fe6f03b1000 [pid 614] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 619] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 618] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 617] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 614] close(7 [pid 618] <... openat resumed>) = 3 [pid 617] <... openat resumed>) = 3 [pid 615] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 614] <... close resumed>) = 0 [pid 615] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 614] close(6 [pid 615] <... futex resumed>) = 1 [pid 614] <... close resumed>) = 0 [pid 613] <... futex resumed>) = 0 [pid 615] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 614] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 613] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 615] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 614] <... futex resumed>) = 1 [pid 613] <... futex resumed>) = 0 [pid 612] <... futex resumed>) = 0 [pid 615] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 614] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 613] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 612] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 615] <... open resumed>) = 5 [pid 614] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 612] <... futex resumed>) = 0 [pid 615] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 614] mknod(0x20000000, 000 [pid 612] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 619] <... write resumed>) = 262144 [pid 615] <... futex resumed>) = 1 [pid 614] <... mknod resumed>) = -1 EEXIST (File exists) [pid 613] <... futex resumed>) = 0 [pid 615] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 614] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 613] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 615] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 614] <... futex resumed>) = 1 [pid 613] <... futex resumed>) = 0 [pid 612] <... futex resumed>) = 0 [pid 615] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 614] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 613] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 612] exit_group(0 [pid 618] write(3, "1000", 4 [pid 617] write(3, "1000", 4 [pid 615] <... mmap resumed>) = 0x20000000 [pid 614] <... futex resumed>) = ? [pid 612] <... exit_group resumed>) = ? [pid 618] <... write resumed>) = 4 [pid 615] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 614] +++ exited with 0 +++ [pid 612] +++ exited with 0 +++ [pid 619] munmap(0x7fe6f03b1000, 138412032 [pid 615] <... futex resumed>) = 1 [pid 613] <... futex resumed>) = 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=612, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 619] <... munmap resumed>) = 0 [pid 615] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 613] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 619] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 615] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 613] <... futex resumed>) = 0 [pid 619] <... openat resumed>) = 4 [pid 615] memfd_create("syzkaller", 0 [pid 613] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 619] ioctl(4, LOOP_SET_FD, 3 [pid 618] close(3 [pid 617] <... write resumed>) = 4 [pid 615] <... memfd_create resumed>) = 6 [pid 619] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 618] <... close resumed>) = 0 [pid 617] close(3 [pid 615] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 303] <... restart_syscall resumed>) = 0 executing program [pid 619] ioctl(4, LOOP_CLR_FD [pid 618] write(1, "executing program\n", 18 [pid 617] <... close resumed>) = 0 [pid 615] <... mmap resumed>) = 0x7fe6f03b1000 executing program [pid 619] <... ioctl resumed>) = 0 [pid 618] <... write resumed>) = 18 [pid 617] write(1, "executing program\n", 18 [pid 615] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 618] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 617] <... write resumed>) = 18 [pid 615] <... write resumed>) = 131072 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 618] <... futex resumed>) = 0 [pid 617] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 615] munmap(0x7fe6f03b1000, 138412032 [pid 303] <... openat resumed>) = 3 [pid 618] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 617] <... futex resumed>) = 0 [pid 615] <... munmap resumed>) = 0 [pid 303] ioctl(3, LOOP_CLR_FD [pid 615] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 303] <... ioctl resumed>) = 0 [pid 618] <... rt_sigaction resumed>NULL, 8) = 0 [pid 617] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 615] <... openat resumed>) = 7 [pid 303] close(3 [pid 619] ioctl(4, LOOP_SET_FD, 3 [pid 615] ioctl(7, LOOP_SET_FD, 6 [pid 303] <... close resumed>) = 0 [pid 619] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 615] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 619] close(4 [pid 615] ioctl(7, LOOP_CLR_FD [pid 619] <... close resumed>) = 0 [pid 615] <... ioctl resumed>) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 620 [pid 619] close(3) = 0 [pid 619] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 616] <... futex resumed>) = 0 [pid 619] chdir("./file0" [pid 616] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 619] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 616] <... futex resumed>) = 0 [pid 619] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 616] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 619] <... futex resumed>) = 0 [pid 616] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 615] ioctl(7, LOOP_SET_FD, 6 [pid 619] creat("./bus", 000 [pid 616] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 615] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 619] <... creat resumed>) = 3 [pid 616] <... futex resumed>) = 0 [pid 615] close(7 [pid 619] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 616] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 615] <... close resumed>) = 0 [pid 619] <... futex resumed>) = 0 [pid 618] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 617] <... rt_sigaction resumed>NULL, 8) = 0 [pid 616] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 615] close(6 [pid 619] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 616] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 615] <... close resumed>) = 0 [pid 619] <... openat resumed>) = 4 [pid 616] <... futex resumed>) = 0 [pid 615] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 619] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 616] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 615] <... futex resumed>) = 1 [pid 613] <... futex resumed>) = 0 [pid 619] <... futex resumed>) = 0 [pid 616] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 615] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 613] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 619] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 616] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 615] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 613] <... futex resumed>) = 0 [pid 619] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 616] <... futex resumed>) = 0 [pid 615] mknod(0x20000000, 000 [pid 613] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 619] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 616] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 615] <... mknod resumed>) = -1 EEXIST (File exists) [pid 619] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 615] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 619] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 615] <... futex resumed>) = 1 [pid 613] <... futex resumed>) = 0 [pid 619] <... futex resumed>) = 1 [pid 616] <... futex resumed>) = 0 [pid 615] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 613] exit_group(0 [pid 619] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 618] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 617] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 616] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 615] <... futex resumed>) = ? [pid 613] <... exit_group resumed>) = ? [pid 619] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 618] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 617] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 616] <... futex resumed>) = 0 [pid 615] +++ exited with 0 +++ [pid 613] +++ exited with 0 +++ [pid 619] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 618] <... mmap resumed>) = 0x7fe6f87b1000 [pid 617] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 616] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=613, si_uid=0, si_status=0, si_utime=1, si_stime=0} --- [pid 619] <... open resumed>) = 5 [pid 618] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 617] <... mmap resumed>) = 0x7fe6f87b1000 [pid 619] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 618] <... mprotect resumed>) = 0 [pid 617] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 619] <... futex resumed>) = 1 [pid 616] <... futex resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 619] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 618] rt_sigprocmask(SIG_BLOCK, ~[], [pid 617] <... mprotect resumed>) = 0 [pid 616] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... openat resumed>) = 3 ./strace-static-x86_64: Process 620 attached [pid 619] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 618] <... rt_sigprocmask resumed>[], 8) = 0 [pid 617] rt_sigprocmask(SIG_BLOCK, ~[], [pid 616] <... futex resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 620] set_robust_list(0x5555636e06a0, 24 [pid 619] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 618] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 617] <... rt_sigprocmask resumed>[], 8) = 0 [pid 616] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... ioctl resumed>) = 0 [pid 620] <... set_robust_list resumed>) = 0 [pid 619] <... mmap resumed>) = 0x20000000 [pid 617] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 306] close(3 [pid 620] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 619] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 618] <... clone3 resumed> => {parent_tid=[621]}, 88) = 621 [pid 306] <... close resumed>) = 0 [pid 620] <... prctl resumed>) = 0 [pid 619] <... futex resumed>) = 1 [pid 618] rt_sigprocmask(SIG_SETMASK, [], [pid 617] <... clone3 resumed> => {parent_tid=[622]}, 88) = 622 [pid 616] <... futex resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 620] setpgid(0, 0 [pid 619] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 618] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 617] rt_sigprocmask(SIG_SETMASK, [], [pid 616] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 621 attached [pid 620] <... setpgid resumed>) = 0 [pid 619] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 618] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 617] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 616] <... futex resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 623 [pid 620] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 619] memfd_create("syzkaller", 0 [pid 618] <... futex resumed>) = 0 [pid 617] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 616] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 620] <... openat resumed>) = 3 [pid 619] <... memfd_create resumed>) = 6 [pid 618] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 617] <... futex resumed>) = 0 [pid 620] write(3, "1000", 4 [pid 619] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 620] <... write resumed>) = 4 [pid 619] <... mmap resumed>) = 0x7fe6f03b1000 [pid 617] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 620] close(3 [pid 619] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072executing program [pid 620] <... close resumed>) = 0 [pid 619] <... write resumed>) = 131072 [pid 620] write(1, "executing program\n", 18 [pid 619] munmap(0x7fe6f03b1000, 138412032 [pid 620] <... write resumed>) = 18 [pid 619] <... munmap resumed>) = 0 [pid 620] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 619] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 620] <... futex resumed>) = 0 [pid 619] <... openat resumed>) = 7 [pid 620] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 619] ioctl(7, LOOP_SET_FD, 6 [pid 620] <... rt_sigaction resumed>NULL, 8) = 0 [pid 619] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 620] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 619] ioctl(7, LOOP_CLR_FD [pid 620] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 619] <... ioctl resumed>) = 0 [pid 620] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 621] set_robust_list(0x7fe6f87d19a0, 24 [pid 620] <... mmap resumed>) = 0x7fe6f87b1000 [pid 621] <... set_robust_list resumed>) = 0 [pid 620] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 621] rt_sigprocmask(SIG_SETMASK, [], [pid 620] <... mprotect resumed>) = 0 [pid 620] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 620] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[624]}, 88) = 624 [pid 620] rt_sigprocmask(SIG_SETMASK, [], [pid 619] ioctl(7, LOOP_SET_FD, 6./strace-static-x86_64: Process 623 attached [pid 620] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 619] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 623] set_robust_list(0x5555636e06a0, 24 [pid 620] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 619] close(7 [pid 623] <... set_robust_list resumed>) = 0 [pid 620] <... futex resumed>) = 0 [pid 619] <... close resumed>) = 0 [pid 623] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 620] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 619] close(6 [pid 623] <... prctl resumed>) = 0 [pid 619] <... close resumed>) = 0 [pid 623] setpgid(0, 0 [pid 619] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 623] <... setpgid resumed>) = 0 [pid 619] <... futex resumed>) = 1 [pid 616] <... futex resumed>) = 0 [pid 623] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 619] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 616] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 622 attached [pid 623] <... openat resumed>) = 3 [pid 619] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 616] <... futex resumed>) = 0 [pid 623] write(3, "1000", 4 [pid 622] set_robust_list(0x7fe6f87d19a0, 24 [pid 619] mknod(0x20000000, 000 [pid 616] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 623] <... write resumed>) = 4 [pid 622] <... set_robust_list resumed>) = 0 [pid 619] <... mknod resumed>) = -1 EEXIST (File exists) [pid 623] close(3 [pid 622] rt_sigprocmask(SIG_SETMASK, [], [pid 619] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 623] <... close resumed>) = 0 [pid 622] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 619] <... futex resumed>) = 1 executing program [pid 616] <... futex resumed>) = 0 [pid 623] write(1, "executing program\n", 18 [pid 622] memfd_create("syzkaller", 0 [pid 619] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 616] exit_group(0 [pid 623] <... write resumed>) = 18 [pid 622] <... memfd_create resumed>) = 3 [pid 619] <... futex resumed>) = ? [pid 616] <... exit_group resumed>) = ? [pid 623] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 622] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 619] +++ exited with 0 +++ [pid 616] +++ exited with 0 +++ [pid 623] <... futex resumed>) = 0 [pid 622] <... mmap resumed>) = 0x7fe6f03b1000 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=616, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 623] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 622] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 623] <... rt_sigaction resumed>NULL, 8) = 0 [pid 623] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 ./strace-static-x86_64: Process 624 attached [pid 623] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 624] set_robust_list(0x7fe6f87d19a0, 24 [pid 623] <... mmap resumed>) = 0x7fe6f87b1000 [pid 624] <... set_robust_list resumed>) = 0 [pid 623] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 624] rt_sigprocmask(SIG_SETMASK, [], [pid 623] <... mprotect resumed>) = 0 [pid 624] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 623] rt_sigprocmask(SIG_BLOCK, ~[], [pid 302] <... restart_syscall resumed>) = 0 [pid 624] memfd_create("syzkaller", 0 [pid 623] <... rt_sigprocmask resumed>[], 8) = 0 [pid 624] <... memfd_create resumed>) = 3 [pid 623] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 624] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 624] <... mmap resumed>) = 0x7fe6f03b1000 [pid 623] <... clone3 resumed> => {parent_tid=[625]}, 88) = 625 [pid 302] <... openat resumed>) = 3 [pid 624] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 623] rt_sigprocmask(SIG_SETMASK, [], [pid 621] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 623] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 622] <... write resumed>) = 262144 [pid 621] memfd_create("syzkaller", 0 [pid 302] <... ioctl resumed>) = 0 [pid 623] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 621] <... memfd_create resumed>) = 3 [pid 302] close(3 [pid 623] <... futex resumed>) = 0 [pid 621] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 302] <... close resumed>) = 0 [pid 623] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 621] <... mmap resumed>) = 0x7fe6f03b1000 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 622] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 626 [pid 622] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 622] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 622] ioctl(4, LOOP_CLR_FD) = 0 [pid 624] <... write resumed>) = 262144 [pid 621] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 624] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 624] openat(AT_FDCWD, "/dev/loop1", O_RDWR./strace-static-x86_64: Process 625 attached ) = 4 [pid 625] set_robust_list(0x7fe6f87d19a0, 24 [pid 622] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 622] close(4) = 0 [pid 622] close(3) = 0 [pid 622] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 617] <... futex resumed>) = 0 [pid 622] chdir("./file0" [pid 617] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 622] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 617] <... futex resumed>) = 0 [pid 617] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 622] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 617] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 622] <... futex resumed>) = 0 [pid 617] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] <... set_robust_list resumed>) = 0 [pid 624] ioctl(4, LOOP_SET_FD, 3 [pid 622] creat("./bus", 000 [pid 617] <... futex resumed>) = 0 [pid 625] rt_sigprocmask(SIG_SETMASK, [], [pid 624] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 622] <... creat resumed>) = 3 [pid 617] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 625] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 624] ioctl(4, LOOP_CLR_FD [pid 622] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] memfd_create("syzkaller", 0 [pid 624] <... ioctl resumed>) = 0 [pid 622] <... futex resumed>) = 1 [pid 617] <... futex resumed>) = 0 [pid 625] <... memfd_create resumed>) = 3 [pid 622] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 617] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 626 attached [pid 625] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 622] <... openat resumed>) = 4 [pid 617] <... futex resumed>) = 0 [pid 626] set_robust_list(0x5555636e06a0, 24 [pid 625] <... mmap resumed>) = 0x7fe6f03b1000 [pid 622] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 617] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 621] <... write resumed>) = 262144 [pid 617] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 626] <... set_robust_list resumed>) = 0 [pid 625] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 622] <... futex resumed>) = 0 [pid 617] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 626] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 624] ioctl(4, LOOP_SET_FD, 3 [pid 622] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 617] <... futex resumed>) = 0 [pid 626] <... prctl resumed>) = 0 [pid 624] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 621] munmap(0x7fe6f03b1000, 138412032 [pid 617] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 626] setpgid(0, 0 [pid 624] close(4 [pid 621] <... munmap resumed>) = 0 [pid 626] <... setpgid resumed>) = 0 [pid 624] <... close resumed>) = 0 [pid 622] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 621] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 626] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 624] close(3 [pid 622] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 621] <... openat resumed>) = 4 [pid 626] <... openat resumed>) = 3 [pid 624] <... close resumed>) = 0 [pid 622] <... futex resumed>) = 1 [pid 621] ioctl(4, LOOP_SET_FD, 3 [pid 617] <... futex resumed>) = 0 [pid 626] write(3, "1000", 4 [pid 625] <... write resumed>) = 262144 [pid 624] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 622] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 621] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 617] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 626] <... write resumed>) = 4 [pid 624] <... futex resumed>) = 1 [pid 622] <... open resumed>) = 5 [pid 621] ioctl(4, LOOP_CLR_FD [pid 620] <... futex resumed>) = 0 [pid 617] <... futex resumed>) = 0 [pid 626] close(3 [pid 624] chdir("./file0" [pid 622] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 621] <... ioctl resumed>) = 0 [pid 620] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 617] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 626] <... close resumed>) = 0 [pid 625] munmap(0x7fe6f03b1000, 138412032 [pid 624] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 622] <... futex resumed>) = 0 executing program [pid 620] <... futex resumed>) = 0 [pid 617] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 626] write(1, "executing program\n", 18 [pid 625] <... munmap resumed>) = 0 [pid 624] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 622] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 620] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 617] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 626] <... write resumed>) = 18 [pid 625] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 624] <... futex resumed>) = 0 [pid 622] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 620] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 626] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] <... openat resumed>) = 4 [pid 624] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 622] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 620] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 617] <... futex resumed>) = 0 [pid 626] <... futex resumed>) = 0 [pid 625] ioctl(4, LOOP_SET_FD, 3 [pid 624] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 622] <... mmap resumed>) = 0x20000000 [pid 620] <... futex resumed>) = 0 [pid 617] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 626] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 625] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 624] creat("./bus", 000 [pid 622] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 621] ioctl(4, LOOP_SET_FD, 3 [pid 620] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 617] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 626] <... rt_sigaction resumed>NULL, 8) = 0 [pid 625] ioctl(4, LOOP_CLR_FD [pid 624] <... creat resumed>) = 3 [pid 622] <... futex resumed>) = 0 [pid 621] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 617] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 626] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 625] <... ioctl resumed>) = 0 [pid 624] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 622] memfd_create("syzkaller", 0 [pid 621] close(4 [pid 617] <... futex resumed>) = 0 [pid 626] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 624] <... futex resumed>) = 1 [pid 622] <... memfd_create resumed>) = 6 [pid 621] <... close resumed>) = 0 [pid 620] <... futex resumed>) = 0 [pid 617] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 626] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 624] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 622] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 621] close(3 [pid 620] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 626] <... mmap resumed>) = 0x7fe6f87b1000 [pid 624] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 622] <... mmap resumed>) = 0x7fe6f03b1000 [pid 620] <... futex resumed>) = 0 [pid 626] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 624] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 622] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 621] <... close resumed>) = 0 [pid 620] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 626] <... mprotect resumed>) = 0 [pid 625] ioctl(4, LOOP_SET_FD, 3 [pid 624] <... openat resumed>) = 4 [pid 622] <... write resumed>) = 131072 [pid 621] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 626] rt_sigprocmask(SIG_BLOCK, ~[], [pid 625] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 624] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 622] munmap(0x7fe6f03b1000, 138412032 [pid 626] <... rt_sigprocmask resumed>[], 8) = 0 [pid 625] close(4 [pid 624] <... futex resumed>) = 1 [pid 622] <... munmap resumed>) = 0 [pid 621] <... futex resumed>) = 1 [pid 620] <... futex resumed>) = 0 [pid 618] <... futex resumed>) = 0 [pid 626] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 625] <... close resumed>) = 0 [pid 624] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 622] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 621] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 620] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 618] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] close(3 [pid 624] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 622] <... openat resumed>) = 7 [pid 621] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 620] <... futex resumed>) = 0 [pid 618] <... futex resumed>) = 0 [pid 626] <... clone3 resumed> => {parent_tid=[627]}, 88) = 627 [pid 625] <... close resumed>) = 0 [pid 624] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 622] ioctl(7, LOOP_SET_FD, 6 [pid 621] chdir("./file0" [pid 620] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 618] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 626] rt_sigprocmask(SIG_SETMASK, [], [pid 625] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 622] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 621] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 626] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 625] <... futex resumed>) = 1 [pid 623] <... futex resumed>) = 0 [pid 622] ioctl(7, LOOP_CLR_FD [pid 621] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 626] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 623] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 622] <... ioctl resumed>) = 0 [pid 621] <... futex resumed>) = 1 [pid 618] <... futex resumed>) = 0 [pid 626] <... futex resumed>) = 0 [pid 625] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 623] <... futex resumed>) = 0 [pid 621] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 618] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 626] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 625] chdir("./file0" [pid 624] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 623] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 621] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 618] <... futex resumed>) = 0 [pid 625] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 624] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 621] creat("./bus", 000 [pid 618] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 625] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 624] <... futex resumed>) = 1 [pid 620] <... futex resumed>) = 0 [pid 625] <... futex resumed>) = 1 [pid 624] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 623] <... futex resumed>) = 0 [pid 621] <... creat resumed>) = 3 [pid 620] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 624] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 623] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 622] ioctl(7, LOOP_SET_FD, 6 [pid 621] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 620] <... futex resumed>) = 0 [pid 625] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 624] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 623] <... futex resumed>) = 0 [pid 622] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 621] <... futex resumed>) = 1 [pid 620] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 618] <... futex resumed>) = 0 [pid 625] creat("./bus", 000 [pid 624] <... open resumed>) = 5 [pid 623] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 622] close(7 [pid 621] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 618] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] <... creat resumed>) = 3 [pid 624] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 622] <... close resumed>) = 0 [pid 621] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 618] <... futex resumed>) = 0 [pid 625] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 624] <... futex resumed>) = 1 [pid 622] close(6 [pid 621] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 620] <... futex resumed>) = 0 [pid 618] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 625] <... futex resumed>) = 1 [pid 624] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 623] <... futex resumed>) = 0 [pid 622] <... close resumed>) = 0 [pid 621] <... openat resumed>) = 4 [pid 620] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 627 attached [pid 625] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 624] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 623] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 622] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 621] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 620] <... futex resumed>) = 0 [pid 627] set_robust_list(0x7fe6f87d19a0, 24 [pid 625] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 624] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 623] <... futex resumed>) = 0 [pid 622] <... futex resumed>) = 1 [pid 621] <... futex resumed>) = 1 [pid 620] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 618] <... futex resumed>) = 0 [pid 617] <... futex resumed>) = 0 [pid 627] <... set_robust_list resumed>) = 0 [pid 625] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 624] <... mmap resumed>) = 0x20000000 [pid 623] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 622] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 621] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 618] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 617] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 627] rt_sigprocmask(SIG_SETMASK, [], [pid 625] <... openat resumed>) = 4 [pid 624] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 622] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 627] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 625] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 624] <... futex resumed>) = 1 [pid 622] mknod(0x20000000, 000 [pid 620] <... futex resumed>) = 0 [pid 627] memfd_create("syzkaller", 0 [pid 625] <... futex resumed>) = 1 [pid 624] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 623] <... futex resumed>) = 0 [pid 622] <... mknod resumed>) = -1 EEXIST (File exists) [pid 621] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 620] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 618] <... futex resumed>) = 0 [pid 617] <... futex resumed>) = 0 [pid 627] <... memfd_create resumed>) = 3 [pid 625] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 624] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 623] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 622] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 621] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 620] <... futex resumed>) = 0 [pid 627] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 625] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 624] memfd_create("syzkaller", 0 [pid 623] <... futex resumed>) = 0 [pid 622] <... futex resumed>) = 0 [pid 620] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 618] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 617] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 627] <... mmap resumed>) = 0x7fe6f03b1000 [pid 625] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 624] <... memfd_create resumed>) = 6 [pid 623] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 622] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 617] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 627] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 624] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 627] <... write resumed>) = 262144 [pid 624] <... mmap resumed>) = 0x7fe6f03b1000 [pid 617] exit_group(0 [pid 624] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 622] <... futex resumed>) = ? [pid 617] <... exit_group resumed>) = ? [pid 624] <... write resumed>) = 131072 [pid 622] +++ exited with 0 +++ [pid 624] munmap(0x7fe6f03b1000, 138412032 [pid 627] munmap(0x7fe6f03b1000, 138412032 [pid 624] <... munmap resumed>) = 0 [pid 627] <... munmap resumed>) = 0 [pid 624] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 617] +++ exited with 0 +++ [pid 627] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 625] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 624] <... openat resumed>) = 7 [pid 621] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=617, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 627] <... openat resumed>) = 4 [pid 625] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 624] ioctl(7, LOOP_SET_FD, 6 [pid 621] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 627] ioctl(4, LOOP_SET_FD, 3 [pid 625] <... futex resumed>) = 1 [pid 624] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 623] <... futex resumed>) = 0 [pid 621] <... futex resumed>) = 1 [pid 618] <... futex resumed>) = 0 [pid 627] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 625] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 624] ioctl(7, LOOP_CLR_FD [pid 623] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 621] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 618] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 627] ioctl(4, LOOP_CLR_FD [pid 625] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 624] <... ioctl resumed>) = 0 [pid 623] <... futex resumed>) = 0 [pid 621] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 618] <... futex resumed>) = 0 [pid 627] <... ioctl resumed>) = 0 [pid 625] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 623] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 621] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 618] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 625] <... open resumed>) = 5 [pid 625] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 621] <... open resumed>) = 5 [pid 625] <... futex resumed>) = 1 [pid 623] <... futex resumed>) = 0 [pid 621] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 623] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 623] <... futex resumed>) = 0 [pid 621] <... futex resumed>) = 1 [pid 618] <... futex resumed>) = 0 [pid 625] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 623] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 621] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 625] <... mmap resumed>) = 0x20000000 [pid 621] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 618] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 627] ioctl(4, LOOP_SET_FD, 3 [pid 625] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 624] ioctl(7, LOOP_SET_FD, 6 [pid 621] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 618] <... futex resumed>) = 0 [pid 627] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 625] <... futex resumed>) = 1 [pid 624] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 623] <... futex resumed>) = 0 [pid 627] close(4 [pid 625] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 624] close(7 [pid 623] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 627] <... close resumed>) = 0 [pid 625] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 624] <... close resumed>) = 0 [pid 623] <... futex resumed>) = 0 [pid 621] <... mmap resumed>) = 0x20000000 [pid 618] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 627] close(3 [pid 625] memfd_create("syzkaller", 0 [pid 624] close(6 [pid 623] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 621] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 627] <... close resumed>) = 0 [pid 625] <... memfd_create resumed>) = 6 [pid 624] <... close resumed>) = 0 [pid 621] <... futex resumed>) = 0 [pid 618] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 627] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 624] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 621] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 618] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 627] <... futex resumed>) = 1 [pid 626] <... futex resumed>) = 0 [pid 625] <... mmap resumed>) = 0x7fe6f03b1000 [pid 624] <... futex resumed>) = 1 [pid 621] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 620] <... futex resumed>) = 0 [pid 618] <... futex resumed>) = 0 [pid 627] chdir("./file0" [pid 626] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 624] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 621] memfd_create("syzkaller", 0 [pid 620] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 618] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 627] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 626] <... futex resumed>) = 0 [pid 625] <... write resumed>) = 131072 [pid 624] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 621] <... memfd_create resumed>) = 6 [pid 620] <... futex resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 627] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 626] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 625] munmap(0x7fe6f03b1000, 138412032 [pid 624] mknod(0x20000000, 000 [pid 621] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 620] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 627] <... futex resumed>) = 0 [pid 626] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 625] <... munmap resumed>) = 0 [pid 624] <... mknod resumed>) = -1 EEXIST (File exists) [pid 621] <... mmap resumed>) = 0x7fe6f03b1000 [pid 627] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 626] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 624] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 627] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 626] <... futex resumed>) = 0 [pid 625] <... openat resumed>) = 7 [pid 624] <... futex resumed>) = 1 [pid 620] <... futex resumed>) = 0 [pid 304] <... openat resumed>) = 3 [pid 627] creat("./bus", 000 [pid 626] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 625] ioctl(7, LOOP_SET_FD, 6 [pid 624] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 621] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 620] exit_group(0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 627] <... creat resumed>) = 3 [pid 625] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 624] <... futex resumed>) = ? [pid 620] <... exit_group resumed>) = ? [pid 304] <... ioctl resumed>) = 0 [pid 627] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] ioctl(7, LOOP_CLR_FD [pid 624] +++ exited with 0 +++ [pid 621] <... write resumed>) = 131072 [pid 620] +++ exited with 0 +++ [pid 304] close(3 [pid 627] <... futex resumed>) = 1 [pid 626] <... futex resumed>) = 0 [pid 625] <... ioctl resumed>) = 0 [pid 621] munmap(0x7fe6f03b1000, 138412032 [pid 304] <... close resumed>) = 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=620, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 627] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 626] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 621] <... munmap resumed>) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 627] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 626] <... futex resumed>) = 0 [pid 621] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 627] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 626] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 628 [pid 627] <... openat resumed>) = 4 [pid 621] <... openat resumed>) = 7 [pid 627] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] ioctl(7, LOOP_SET_FD, 6 [pid 621] ioctl(7, LOOP_SET_FD, 6 [pid 627] <... futex resumed>) = 1 [pid 626] <... futex resumed>) = 0 [pid 625] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 627] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 626] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] close(7 [pid 621] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 627] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 626] <... futex resumed>) = 0 [pid 625] <... close resumed>) = 0 [pid 627] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 626] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 625] close(6 [pid 621] ioctl(7, LOOP_CLR_FD [pid 625] <... close resumed>) = 0 [pid 627] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 625] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 621] <... ioctl resumed>) = 0 [pid 627] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] <... futex resumed>) = 1 [pid 623] <... futex resumed>) = 0 [pid 627] <... futex resumed>) = 1 [pid 626] <... futex resumed>) = 0 [pid 625] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 623] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 627] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 626] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 623] <... futex resumed>) = 0 [pid 627] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 626] <... futex resumed>) = 0 [pid 625] mknod(0x20000000, 000 [pid 623] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 627] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 626] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 625] <... mknod resumed>) = -1 EEXIST (File exists) [pid 627] <... open resumed>) = 5 [pid 625] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 627] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] <... futex resumed>) = 1 [pid 623] <... futex resumed>) = 0 [pid 627] <... futex resumed>) = 1 [pid 626] <... futex resumed>) = 0 [pid 625] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 623] exit_group(0 [pid 621] ioctl(7, LOOP_SET_FD, 6 [pid 627] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 626] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 625] <... futex resumed>) = ? [pid 623] <... exit_group resumed>) = ? [pid 621] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 627] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 626] <... futex resumed>) = 0 [pid 625] +++ exited with 0 +++ [pid 623] +++ exited with 0 +++ [pid 621] close(7 [pid 627] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 626] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=623, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 627] <... mmap resumed>) = 0x20000000 [pid 621] <... close resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 303] <... restart_syscall resumed>) = 0 [pid 627] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 621] close(6 [pid 306] <... restart_syscall resumed>) = 0 [pid 627] <... futex resumed>) = 1 [pid 626] <... futex resumed>) = 0 [pid 627] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 626] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 621] <... close resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 627] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 626] <... futex resumed>) = 0 [pid 621] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 303] <... openat resumed>) = 3 [pid 627] memfd_create("syzkaller", 0 [pid 626] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 621] <... futex resumed>) = 1 [pid 618] <... futex resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 303] ioctl(3, LOOP_CLR_FD [pid 627] <... memfd_create resumed>) = 6 [pid 621] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 618] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] ioctl(3, LOOP_CLR_FD [pid 303] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 628 attached [pid 627] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 621] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 618] <... futex resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 303] close(3 [pid 628] set_robust_list(0x5555636e06a0, 24 [pid 627] <... mmap resumed>) = 0x7fe6f03b1000 [pid 621] mknod(0x20000000, 000 [pid 618] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] close(3 [pid 303] <... close resumed>) = 0 [pid 628] <... set_robust_list resumed>) = 0 [pid 627] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 621] <... mknod resumed>) = -1 EEXIST (File exists) [pid 306] <... close resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 628] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 627] <... write resumed>) = 131072 [pid 621] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 628] <... prctl resumed>) = 0 [pid 627] munmap(0x7fe6f03b1000, 138412032 [pid 621] <... futex resumed>) = 1 [pid 618] <... futex resumed>) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 629 [pid 628] setpgid(0, 0 [pid 627] <... munmap resumed>) = 0 [pid 621] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 618] exit_group(0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 630 [pid 628] <... setpgid resumed>) = 0 [pid 627] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 621] <... futex resumed>) = ? [pid 618] <... exit_group resumed>) = ? [pid 628] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 627] <... openat resumed>) = 7 [pid 621] +++ exited with 0 +++ [pid 628] <... openat resumed>) = 3 [pid 627] ioctl(7, LOOP_SET_FD, 6 [pid 628] write(3, "1000", 4 [pid 627] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) executing program [pid 628] <... write resumed>) = 4 [pid 627] ioctl(7, LOOP_CLR_FD [pid 618] +++ exited with 0 +++ [pid 628] close(3 [pid 627] <... ioctl resumed>) = 0 [pid 628] <... close resumed>) = 0 [pid 628] write(1, "executing program\n", 18 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=618, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 628] <... write resumed>) = 18 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 628] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 628] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 628] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 628] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 628] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 627] ioctl(7, LOOP_SET_FD, 6 [pid 628] rt_sigprocmask(SIG_BLOCK, ~[], [pid 627] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 628] <... rt_sigprocmask resumed>[], 8) = 0 [pid 627] close(7 [pid 628] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 627] <... close resumed>) = 0 [pid 627] close(6 [pid 628] <... clone3 resumed> => {parent_tid=[631]}, 88) = 631 [pid 627] <... close resumed>) = 0 [pid 628] rt_sigprocmask(SIG_SETMASK, [], [pid 627] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 628] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 627] <... futex resumed>) = 1 [pid 626] <... futex resumed>) = 0 [pid 628] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 627] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 626] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 628] <... futex resumed>) = 0 [pid 627] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 626] <... futex resumed>) = 0 [pid 628] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 627] mknod(0x20000000, 000 [pid 626] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 627] <... mknod resumed>) = -1 EEXIST (File exists) [pid 627] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 626] <... futex resumed>) = 0 [pid 627] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 626] exit_group(0 [pid 627] <... futex resumed>) = ? [pid 626] <... exit_group resumed>) = ? [pid 627] +++ exited with 0 +++ [pid 626] +++ exited with 0 +++ [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=626, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 629 attached [pid 629] set_robust_list(0x5555636e06a0, 24) = 0 [pid 629] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 629] setpgid(0, 0) = 0 [pid 629] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 executing program [pid 629] write(3, "1000", 4) = 4 [pid 629] close(3) = 0 [pid 629] write(1, "executing program\n", 18) = 18 [pid 629] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 629] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 629] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 629] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 629] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 629] rt_sigprocmask(SIG_BLOCK, ~[], [pid 305] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 630 attached [pid 629] <... rt_sigprocmask resumed>[], 8) = 0 [pid 629] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 630] set_robust_list(0x5555636e06a0, 24 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 630] <... set_robust_list resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 630] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 305] ioctl(3, LOOP_CLR_FD [pid 630] <... prctl resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 631 attached [pid 630] setpgid(0, 0 [pid 629] <... clone3 resumed> => {parent_tid=[632]}, 88) = 632 [pid 305] close(3 [pid 631] set_robust_list(0x7fe6f87d19a0, 24 [pid 630] <... setpgid resumed>) = 0 [pid 629] rt_sigprocmask(SIG_SETMASK, [], [pid 305] <... close resumed>) = 0 [pid 631] <... set_robust_list resumed>) = 0 [pid 630] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 629] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 631] rt_sigprocmask(SIG_SETMASK, [], [pid 629] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 631] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 629] <... futex resumed>) = 0 [pid 631] memfd_create("syzkaller", 0 [pid 629] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 631] <... memfd_create resumed>) = 3 [pid 631] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 630] <... openat resumed>) = 3 [pid 630] write(3, "1000", 4 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 633 [pid 630] <... write resumed>) = 4 [pid 630] close(3 [pid 631] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 630] <... close resumed>) = 0 executing program ./strace-static-x86_64: Process 632 attached [pid 630] write(1, "executing program\n", 18 [pid 632] set_robust_list(0x7fe6f87d19a0, 24 [pid 630] <... write resumed>) = 18 [pid 632] <... set_robust_list resumed>) = 0 [pid 630] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... restart_syscall resumed>) = 0 [pid 632] rt_sigprocmask(SIG_SETMASK, [], [pid 630] <... futex resumed>) = 0 [pid 632] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 630] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 632] memfd_create("syzkaller", 0 [pid 630] <... rt_sigaction resumed>NULL, 8) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 632] <... memfd_create resumed>) = 3 [pid 630] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 302] <... openat resumed>) = 3 [pid 632] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 630] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 632] <... mmap resumed>) = 0x7fe6f03b1000 [pid 630] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 302] <... ioctl resumed>) = 0 [pid 630] <... mmap resumed>) = 0x7fe6f87b1000 [pid 302] close(3 [pid 630] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 302] <... close resumed>) = 0 [pid 630] <... mprotect resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 630] rt_sigprocmask(SIG_BLOCK, ~[], [pid 631] <... write resumed>) = 262144 [pid 630] <... rt_sigprocmask resumed>[], 8) = 0 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 634 [pid 632] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 630] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 631] munmap(0x7fe6f03b1000, 138412032 [pid 630] <... clone3 resumed> => {parent_tid=[635]}, 88) = 635 [pid 630] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 631] <... munmap resumed>) = 0 [pid 630] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 631] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 630] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 631] <... openat resumed>) = 4 [pid 631] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 633 attached [pid 631] ioctl(4, LOOP_CLR_FD [pid 633] set_robust_list(0x5555636e06a0, 24 [pid 631] <... ioctl resumed>) = 0 [pid 633] <... set_robust_list resumed>) = 0 [pid 633] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 633] setpgid(0, 0) = 0 [pid 633] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 633] write(3, "1000", 4) = 4 [pid 633] close(3) = 0 [pid 631] ioctl(4, LOOP_SET_FD, 3executing program [pid 633] write(1, "executing program\n", 18 [pid 631] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 633] <... write resumed>) = 18 [pid 631] close(4 [pid 633] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 631] <... close resumed>) = 0 [pid 633] <... futex resumed>) = 0 [pid 631] close(3 [pid 633] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 631] <... close resumed>) = 0 [pid 633] <... rt_sigaction resumed>NULL, 8) = 0 [pid 631] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 633] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 631] <... futex resumed>) = 1 [pid 628] <... futex resumed>) = 0 [pid 633] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 631] chdir("./file0" [pid 628] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 633] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 631] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 628] <... futex resumed>) = 0 ./strace-static-x86_64: Process 634 attached [pid 633] <... mmap resumed>) = 0x7fe6f87b1000 [pid 631] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 628] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 634] set_robust_list(0x5555636e06a0, 24 [pid 633] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 631] <... futex resumed>) = 0 [pid 628] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 634] <... set_robust_list resumed>) = 0 [pid 633] <... mprotect resumed>) = 0 [pid 631] creat("./bus", 000 [pid 628] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 634] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 633] rt_sigprocmask(SIG_BLOCK, ~[], [pid 631] <... creat resumed>) = 3 [pid 628] <... futex resumed>) = 0 [pid 634] <... prctl resumed>) = 0 [pid 633] <... rt_sigprocmask resumed>[], 8) = 0 [pid 632] <... write resumed>) = 262144 [pid 631] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 628] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 634] setpgid(0, 0 [pid 633] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 631] <... futex resumed>) = 0 [pid 628] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 634] <... setpgid resumed>) = 0 [pid 631] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 628] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 634] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 633] <... clone3 resumed> => {parent_tid=[636]}, 88) = 636 [pid 631] <... openat resumed>) = 4 [pid 628] <... futex resumed>) = 0 [pid 634] <... openat resumed>) = 3 [pid 633] rt_sigprocmask(SIG_SETMASK, [], [pid 631] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 628] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 634] write(3, "1000", 4 [pid 633] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 631] <... futex resumed>) = 0 [pid 628] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 634] <... write resumed>) = 4 [pid 633] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 631] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 628] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 634] close(3 [pid 633] <... futex resumed>) = 0 [pid 628] <... futex resumed>) = 0 [pid 634] <... close resumed>) = 0 [pid 633] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 628] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}executing program [pid 634] write(1, "executing program\n", 18) = 18 [pid 634] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 634] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 634] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 634] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 632] munmap(0x7fe6f03b1000, 138412032 [pid 631] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 634] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 631] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 634] <... mprotect resumed>) = 0 [pid 631] <... futex resumed>) = 1 [pid 628] <... futex resumed>) = 0 [pid 634] rt_sigprocmask(SIG_BLOCK, ~[], [pid 631] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 628] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 634] <... rt_sigprocmask resumed>[], 8) = 0 [pid 631] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 628] <... futex resumed>) = 0 [pid 634] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 631] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 628] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 631] <... open resumed>) = 5 [pid 634] <... clone3 resumed> => {parent_tid=[637]}, 88) = 637 [pid 631] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 634] rt_sigprocmask(SIG_SETMASK, [], [pid 631] <... futex resumed>) = 1 [pid 628] <... futex resumed>) = 0 [pid 634] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 631] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 628] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 636 attached [pid 634] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 631] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 628] <... futex resumed>) = 0 [pid 636] set_robust_list(0x7fe6f87d19a0, 24 [pid 634] <... futex resumed>) = 0 [pid 631] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 628] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 635 attached [pid 636] <... set_robust_list resumed>) = 0 [pid 634] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 632] <... munmap resumed>) = 0 [pid 631] <... mmap resumed>) = 0x20000000 [pid 636] rt_sigprocmask(SIG_SETMASK, [], [pid 635] set_robust_list(0x7fe6f87d19a0, 24 [pid 632] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 631] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 637 attached [pid 636] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 635] <... set_robust_list resumed>) = 0 [pid 632] <... openat resumed>) = 4 [pid 631] <... futex resumed>) = 1 [pid 628] <... futex resumed>) = 0 [pid 637] set_robust_list(0x7fe6f87d19a0, 24 [pid 636] memfd_create("syzkaller", 0 [pid 635] rt_sigprocmask(SIG_SETMASK, [], [pid 632] ioctl(4, LOOP_SET_FD, 3 [pid 631] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 628] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 637] <... set_robust_list resumed>) = 0 [pid 636] <... memfd_create resumed>) = 3 [pid 635] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 632] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 631] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 628] <... futex resumed>) = 0 [pid 637] rt_sigprocmask(SIG_SETMASK, [], [pid 636] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 635] memfd_create("syzkaller", 0 [pid 632] ioctl(4, LOOP_CLR_FD [pid 631] memfd_create("syzkaller", 0 [pid 628] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 637] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 636] <... mmap resumed>) = 0x7fe6f03b1000 [pid 635] <... memfd_create resumed>) = 3 [pid 632] <... ioctl resumed>) = 0 [pid 631] <... memfd_create resumed>) = 6 [pid 637] memfd_create("syzkaller", 0 [pid 636] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 635] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 631] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 636] <... write resumed>) = 262144 [pid 635] <... mmap resumed>) = 0x7fe6f03b1000 [pid 631] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 632] ioctl(4, LOOP_SET_FD, 3 [pid 631] munmap(0x7fe6f03b1000, 138412032 [pid 632] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 631] <... munmap resumed>) = 0 [pid 632] close(4 [pid 631] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 632] <... close resumed>) = 0 [pid 631] <... openat resumed>) = 7 [pid 632] close(3 [pid 631] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 631] ioctl(7, LOOP_CLR_FD) = 0 [pid 636] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 636] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 632] <... close resumed>) = 0 [pid 637] <... memfd_create resumed>) = 3 [pid 632] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 637] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 632] <... futex resumed>) = 1 [pid 629] <... futex resumed>) = 0 [pid 637] <... mmap resumed>) = 0x7fe6f03b1000 [pid 636] <... openat resumed>) = 4 [pid 635] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 632] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 629] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 636] ioctl(4, LOOP_SET_FD, 3 [pid 629] <... futex resumed>) = 0 [pid 636] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 631] ioctl(7, LOOP_SET_FD, 6 [pid 629] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 636] ioctl(4, LOOP_CLR_FD [pid 631] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 636] <... ioctl resumed>) = 0 [pid 631] close(7) = 0 [pid 631] close(6) = 0 [pid 631] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 628] <... futex resumed>) = 0 [pid 631] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 628] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 631] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 628] <... futex resumed>) = 0 [pid 631] mknod(0x20000000, 000 [pid 628] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 631] <... mknod resumed>) = -1 EEXIST (File exists) [pid 636] ioctl(4, LOOP_SET_FD, 3 [pid 631] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 636] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 631] <... futex resumed>) = 1 [pid 628] <... futex resumed>) = 0 [pid 636] close(4 [pid 631] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 628] exit_group(0 [pid 636] <... close resumed>) = 0 [pid 631] <... futex resumed>) = ? [pid 628] <... exit_group resumed>) = ? [pid 636] close(3 [pid 631] +++ exited with 0 +++ [pid 628] +++ exited with 0 +++ [pid 636] <... close resumed>) = 0 [pid 632] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 636] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 632] chdir("./file0" [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=628, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 636] <... futex resumed>) = 1 [pid 633] <... futex resumed>) = 0 [pid 632] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 636] chdir("./file0" [pid 633] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 632] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... openat resumed>) = 3 [pid 636] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 635] <... write resumed>) = 262144 [pid 633] <... futex resumed>) = 0 [pid 632] <... futex resumed>) = 1 [pid 629] <... futex resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 636] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 635] munmap(0x7fe6f03b1000, 138412032 [pid 633] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 632] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 629] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... ioctl resumed>) = 0 [pid 636] <... futex resumed>) = 0 [pid 635] <... munmap resumed>) = 0 [pid 633] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 632] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 629] <... futex resumed>) = 0 [pid 304] close(3 [pid 636] creat("./bus", 000 [pid 635] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 633] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 632] creat("./bus", 000 [pid 629] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... close resumed>) = 0 [pid 637] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 636] <... creat resumed>) = 3 [pid 635] <... openat resumed>) = 4 [pid 633] <... futex resumed>) = 0 [pid 632] <... creat resumed>) = 3 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 636] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 635] ioctl(4, LOOP_SET_FD, 3 [pid 633] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 632] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 637] <... write resumed>) = 262144 [pid 636] <... futex resumed>) = 0 [pid 635] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 633] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 632] <... futex resumed>) = 1 [pid 629] <... futex resumed>) = 0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 638 [pid 636] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 633] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 632] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 629] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 636] <... openat resumed>) = 4 [pid 633] <... futex resumed>) = 0 [pid 632] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 629] <... futex resumed>) = 0 [pid 636] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 633] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 632] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 629] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 636] <... futex resumed>) = 0 [pid 633] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 632] <... openat resumed>) = 4 [pid 636] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 633] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 632] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 636] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 633] <... futex resumed>) = 0 [pid 632] <... futex resumed>) = 1 [pid 629] <... futex resumed>) = 0 [pid 636] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 633] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 632] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 629] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 635] ioctl(4, LOOP_CLR_FD [pid 632] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 629] <... futex resumed>) = 0 [pid 635] <... ioctl resumed>) = 0 [pid 632] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 629] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 638 attached [pid 638] set_robust_list(0x5555636e06a0, 24) = 0 [pid 638] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 638] setpgid(0, 0) = 0 [pid 638] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 638] write(3, "1000", 4) = 4 [pid 637] munmap(0x7fe6f03b1000, 138412032 [pid 636] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 636] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 633] <... futex resumed>) = 0 [pid 636] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 633] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 636] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 633] <... futex resumed>) = 0 [pid 636] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 633] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 636] <... open resumed>) = 5 [pid 636] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 633] <... futex resumed>) = 0 [pid 636] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 633] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 636] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 633] <... futex resumed>) = 0 [pid 636] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 633] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 636] <... mmap resumed>) = 0x20000000 [pid 636] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 633] <... futex resumed>) = 0 [pid 636] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 633] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 636] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 633] <... futex resumed>) = 0 [pid 636] memfd_create("syzkaller", 0 [pid 633] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 636] <... memfd_create resumed>) = 6 [pid 636] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 636] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 637] <... munmap resumed>) = 0 [pid 636] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 632] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 637] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 636] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 635] ioctl(4, LOOP_SET_FD, 3 [pid 632] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 636] <... openat resumed>) = 7 [pid 637] <... openat resumed>) = 4 [pid 636] ioctl(7, LOOP_SET_FD, 6 [pid 635] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 632] <... futex resumed>) = 1 [pid 629] <... futex resumed>) = 0 [pid 637] ioctl(4, LOOP_SET_FD, 3 [pid 636] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 635] close(4 [pid 632] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 629] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 637] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 636] ioctl(7, LOOP_CLR_FD [pid 635] <... close resumed>) = 0 [pid 632] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 629] <... futex resumed>) = 0 [pid 638] close(3 [pid 637] ioctl(4, LOOP_CLR_FD [pid 636] <... ioctl resumed>) = 0 [pid 635] close(3 [pid 632] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 629] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}executing program [pid 638] <... close resumed>) = 0 [pid 632] <... open resumed>) = 5 [pid 638] write(1, "executing program\n", 18 [pid 632] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 638] <... write resumed>) = 18 [pid 632] <... futex resumed>) = 1 [pid 629] <... futex resumed>) = 0 [pid 638] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 637] <... ioctl resumed>) = 0 [pid 635] <... close resumed>) = 0 [pid 632] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 629] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 638] <... futex resumed>) = 0 [pid 635] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 632] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 629] <... futex resumed>) = 0 [pid 638] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 635] <... futex resumed>) = 1 [pid 632] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 630] <... futex resumed>) = 0 [pid 629] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 638] <... rt_sigaction resumed>NULL, 8) = 0 [pid 635] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 638] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 636] ioctl(7, LOOP_SET_FD, 6 [pid 632] <... mmap resumed>) = 0x20000000 [pid 630] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 638] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 636] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 635] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 632] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 630] <... futex resumed>) = 0 [pid 638] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 637] ioctl(4, LOOP_SET_FD, 3 [pid 636] close(7 [pid 635] chdir("./file0" [pid 632] <... futex resumed>) = 1 [pid 630] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 629] <... futex resumed>) = 0 [pid 638] <... mmap resumed>) = 0x7fe6f87b1000 [pid 637] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 636] <... close resumed>) = 0 [pid 635] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 632] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 629] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 638] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 637] close(4 [pid 636] close(6 [pid 635] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 632] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 629] <... futex resumed>) = 0 [pid 638] <... mprotect resumed>) = 0 [pid 637] <... close resumed>) = 0 [pid 636] <... close resumed>) = 0 [pid 635] <... futex resumed>) = 1 [pid 630] <... futex resumed>) = 0 [pid 629] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 638] rt_sigprocmask(SIG_BLOCK, ~[], [pid 637] close(3 [pid 636] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 635] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 632] memfd_create("syzkaller", 0 [pid 630] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 638] <... rt_sigprocmask resumed>[], 8) = 0 [pid 636] <... futex resumed>) = 1 [pid 633] <... futex resumed>) = 0 [pid 638] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 636] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 635] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 633] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 632] <... memfd_create resumed>) = 6 [pid 630] <... futex resumed>) = 0 [pid 637] <... close resumed>) = 0 [pid 636] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 635] creat("./bus", 000 [pid 633] <... futex resumed>) = 0 [pid 632] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 630] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 638] <... clone3 resumed> => {parent_tid=[639]}, 88) = 639 [pid 637] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 636] mknod(0x20000000, 000 [pid 635] <... creat resumed>) = 3 [pid 633] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 632] <... mmap resumed>) = 0x7fe6f03b1000 [pid 638] rt_sigprocmask(SIG_SETMASK, [], [pid 637] <... futex resumed>) = 1 [pid 636] <... mknod resumed>) = -1 EEXIST (File exists) [pid 635] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 634] <... futex resumed>) = 0 [pid 638] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 636] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 634] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 638] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 636] <... futex resumed>) = 1 [pid 634] <... futex resumed>) = 0 [pid 633] <... futex resumed>) = 0 [pid 638] <... futex resumed>) = 0 [pid 636] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 634] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 633] exit_group(0 [pid 638] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 636] <... futex resumed>) = ? [pid 633] <... exit_group resumed>) = ? [pid 637] chdir("./file0" [pid 636] +++ exited with 0 +++ [pid 635] <... futex resumed>) = 1 [pid 633] +++ exited with 0 +++ [pid 632] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 630] <... futex resumed>) = 0 [pid 637] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 635] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 639 attached [pid 639] set_robust_list(0x7fe6f87d19a0, 24 [pid 632] <... write resumed>) = 131072 [pid 630] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=633, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 635] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 637] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 635] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 632] munmap(0x7fe6f03b1000, 138412032 [pid 630] <... futex resumed>) = 0 [pid 637] <... futex resumed>) = 1 [pid 634] <... futex resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 635] <... openat resumed>) = 4 [pid 634] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 630] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 637] creat("./bus", 000 [pid 635] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 634] <... futex resumed>) = 0 [pid 632] <... munmap resumed>) = 0 [pid 630] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 637] <... creat resumed>) = 3 [pid 635] <... futex resumed>) = 0 [pid 634] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 632] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 630] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 637] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 635] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 632] <... openat resumed>) = 7 [pid 630] <... futex resumed>) = 0 [pid 637] <... futex resumed>) = 1 [pid 634] <... futex resumed>) = 0 [pid 632] ioctl(7, LOOP_SET_FD, 6 [pid 635] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 630] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 637] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 635] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 634] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 632] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 630] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 637] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 635] <... futex resumed>) = 0 [pid 634] <... futex resumed>) = 0 [pid 632] ioctl(7, LOOP_CLR_FD [pid 630] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 637] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 635] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 634] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 632] <... ioctl resumed>) = 0 [pid 630] <... futex resumed>) = 0 [pid 637] <... openat resumed>) = 4 [pid 635] <... open resumed>) = 5 [pid 630] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 637] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 635] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 630] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 637] <... futex resumed>) = 1 [pid 635] <... futex resumed>) = 0 [pid 634] <... futex resumed>) = 0 [pid 630] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 639] <... set_robust_list resumed>) = 0 [pid 637] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 635] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 634] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 630] <... futex resumed>) = 0 [pid 639] rt_sigprocmask(SIG_SETMASK, [], [pid 637] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 635] <... mmap resumed>) = 0x20000000 [pid 634] <... futex resumed>) = 0 [pid 630] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 639] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 637] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 635] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 634] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 630] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 639] memfd_create("syzkaller", 0 [pid 637] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 635] <... futex resumed>) = 0 [pid 632] ioctl(7, LOOP_SET_FD, 6 [pid 630] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... restart_syscall resumed>) = 0 [pid 639] <... memfd_create resumed>) = 3 [pid 637] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 635] memfd_create("syzkaller", 0 [pid 632] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 630] <... futex resumed>) = 0 [pid 639] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 637] <... futex resumed>) = 1 [pid 635] <... memfd_create resumed>) = 6 [pid 634] <... futex resumed>) = 0 [pid 632] close(7 [pid 630] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 639] <... mmap resumed>) = 0x7fe6f03b1000 [pid 637] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 635] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 634] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 632] <... close resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 639] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 637] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 635] <... mmap resumed>) = 0x7fe6f03b1000 [pid 634] <... futex resumed>) = 0 [pid 634] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 639] <... write resumed>) = 262144 [pid 639] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 639] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 639] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 639] ioctl(4, LOOP_CLR_FD) = 0 [pid 637] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 632] close(6 [pid 305] <... openat resumed>) = 3 [pid 639] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 635] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 637] <... open resumed>) = 5 [pid 639] close(4) = 0 [pid 632] <... close resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 637] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 632] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 639] close(3) = 0 [pid 637] <... futex resumed>) = 1 [pid 635] <... write resumed>) = 131072 [pid 305] <... ioctl resumed>) = 0 [pid 634] <... futex resumed>) = 0 [pid 637] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 635] munmap(0x7fe6f03b1000, 138412032 [pid 634] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 632] <... futex resumed>) = 1 [pid 629] <... futex resumed>) = 0 [pid 305] close(3 [pid 637] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 637] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 635] <... munmap resumed>) = 0 [pid 634] <... futex resumed>) = 0 [pid 632] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 629] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... close resumed>) = 0 [pid 639] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 638] <... futex resumed>) = 0 [pid 637] <... mmap resumed>) = 0x20000000 [pid 635] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 634] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 632] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 629] <... futex resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 638] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 637] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 635] <... openat resumed>) = 7 [pid 634] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 632] mknod(0x20000000, 000 [pid 629] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 638] <... futex resumed>) = 0 [pid 637] <... futex resumed>) = 0 [pid 635] ioctl(7, LOOP_SET_FD, 6 [pid 634] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 632] <... mknod resumed>) = -1 EEXIST (File exists) [pid 639] <... futex resumed>) = 1 [pid 638] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 637] memfd_create("syzkaller", 0 [pid 635] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 634] <... futex resumed>) = 0 [pid 632] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 640 [pid 639] chdir("./file0" [pid 637] <... memfd_create resumed>) = 6 [pid 635] ioctl(7, LOOP_CLR_FD [pid 634] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 632] <... futex resumed>) = 1 [pid 629] <... futex resumed>) = 0 [pid 637] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 635] <... ioctl resumed>) = 0 [pid 639] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 637] <... mmap resumed>) = 0x7fe6f03b1000 [pid 632] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 629] exit_group(0 [pid 639] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 638] <... futex resumed>) = 0 [pid 639] creat("./bus", 000 [pid 638] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 639] <... creat resumed>) = 3 [pid 638] <... futex resumed>) = 0 [pid 639] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 638] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 639] <... futex resumed>) = 0 [pid 638] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 639] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 638] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 639] <... openat resumed>) = 4 [pid 638] <... futex resumed>) = 0 [pid 637] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 632] <... futex resumed>) = ? [pid 629] <... exit_group resumed>) = ? [pid 639] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 638] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 639] <... futex resumed>) = 0 [pid 638] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 639] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 638] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 639] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 638] <... futex resumed>) = 0 [pid 637] <... write resumed>) = 131072 [pid 632] +++ exited with 0 +++ [pid 639] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 638] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 639] <... futex resumed>) = 0 [pid 638] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 637] munmap(0x7fe6f03b1000, 138412032 [pid 629] +++ exited with 0 +++ [pid 639] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 638] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=629, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 640 attached [pid 639] <... open resumed>) = 5 [pid 638] <... futex resumed>) = 0 [pid 637] <... munmap resumed>) = 0 [pid 635] ioctl(7, LOOP_SET_FD, 6 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 640] set_robust_list(0x5555636e06a0, 24 [pid 639] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 638] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 637] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 635] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 640] <... set_robust_list resumed>) = 0 [pid 639] <... futex resumed>) = 0 [pid 638] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 637] <... openat resumed>) = 7 [pid 635] close(7 [pid 640] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 639] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 638] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 637] ioctl(7, LOOP_SET_FD, 6 [pid 640] <... prctl resumed>) = 0 [pid 639] <... mmap resumed>) = 0x20000000 [pid 638] <... futex resumed>) = 0 [pid 637] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 635] <... close resumed>) = 0 [pid 640] setpgid(0, 0 [pid 639] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 638] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 637] ioctl(7, LOOP_CLR_FD [pid 635] close(6 [pid 303] <... restart_syscall resumed>) = 0 [pid 640] <... setpgid resumed>) = 0 [pid 639] <... futex resumed>) = 0 [pid 638] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 637] <... ioctl resumed>) = 0 [pid 640] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 639] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 638] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 635] <... close resumed>) = 0 [pid 640] <... openat resumed>) = 3 [pid 639] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 638] <... futex resumed>) = 0 [pid 635] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 640] write(3, "1000", 4 [pid 639] memfd_create("syzkaller", 0 [pid 638] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 635] <... futex resumed>) = 1 [pid 630] <... futex resumed>) = 0 [pid 303] <... openat resumed>) = 3 [pid 640] <... write resumed>) = 4 [pid 639] <... memfd_create resumed>) = 6 [pid 635] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 630] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] ioctl(3, LOOP_CLR_FD [pid 640] close(3 [pid 639] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 635] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 630] <... futex resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 640] <... close resumed>) = 0 [pid 639] <... mmap resumed>) = 0x7fe6f03b1000 [pid 303] close(3executing program [pid 640] write(1, "executing program\n", 18 [pid 639] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 303] <... close resumed>) = 0 [pid 640] <... write resumed>) = 18 [pid 639] <... write resumed>) = 131072 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 640] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 639] munmap(0x7fe6f03b1000, 138412032 [pid 640] <... futex resumed>) = 0 [pid 639] <... munmap resumed>) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 641 [pid 640] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 639] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 640] <... rt_sigaction resumed>NULL, 8) = 0 [pid 639] <... openat resumed>) = 7 [pid 640] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 639] ioctl(7, LOOP_SET_FD, 6 [pid 640] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 639] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 640] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 639] ioctl(7, LOOP_CLR_FD [pid 640] rt_sigprocmask(SIG_BLOCK, ~[], [pid 639] <... ioctl resumed>) = 0 [pid 637] ioctl(7, LOOP_SET_FD, 6 [pid 635] mknod(0x20000000, 000 [pid 630] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 640] <... rt_sigprocmask resumed>[], 8) = 0 [pid 637] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 635] <... mknod resumed>) = -1 EEXIST (File exists) [pid 640] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 637] close(7 [pid 635] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 637] <... close resumed>) = 0 [pid 635] <... futex resumed>) = 1 [pid 630] <... futex resumed>) = 0 [pid 640] <... clone3 resumed> => {parent_tid=[642]}, 88) = 642 [pid 637] close(6 [pid 635] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 640] rt_sigprocmask(SIG_SETMASK, [], [pid 630] exit_group(0 [pid 640] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 640] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 637] <... close resumed>) = 0 [pid 630] <... exit_group resumed>) = ? [pid 635] <... futex resumed>) = 0 [pid 640] <... futex resumed>) = 0 [pid 640] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 639] ioctl(7, LOOP_SET_FD, 6 [pid 637] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 639] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 639] close(7) = 0 [pid 639] close(6) = 0 [pid 639] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 635] +++ exited with 0 +++ [pid 630] +++ exited with 0 +++ [pid 637] <... futex resumed>) = 1 [pid 634] <... futex resumed>) = 0 [pid 639] <... futex resumed>) = 1 [pid 638] <... futex resumed>) = 0 [pid 637] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 634] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=630, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 639] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 638] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 637] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 634] <... futex resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 639] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 638] <... futex resumed>) = 0 [pid 637] mknod(0x20000000, 000 [pid 634] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 639] mknod(0x20000000, 000 [pid 638] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 637] <... mknod resumed>) = -1 EEXIST (File exists) [pid 639] <... mknod resumed>) = -1 EEXIST (File exists) [pid 637] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 639] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 638] <... futex resumed>) = 0 [pid 637] <... futex resumed>) = 1 [pid 639] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 638] exit_group(0 [pid 637] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 634] <... futex resumed>) = 0 [pid 639] <... futex resumed>) = ? [pid 638] <... exit_group resumed>) = ? [pid 639] +++ exited with 0 +++ [pid 638] +++ exited with 0 +++ [pid 634] exit_group(0 [pid 306] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 642 attached [pid 637] <... futex resumed>) = ? [pid 634] <... exit_group resumed>) = ? [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=638, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 637] +++ exited with 0 +++ [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 306] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 641 attached [pid 634] +++ exited with 0 +++ [pid 642] set_robust_list(0x7fe6f87d19a0, 24 [pid 306] <... ioctl resumed>) = 0 [pid 641] set_robust_list(0x5555636e06a0, 24 [pid 306] close(3 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=634, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 641] <... set_robust_list resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 641] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 641] <... prctl resumed>) = 0 [pid 641] setpgid(0, 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 643 [pid 641] <... setpgid resumed>) = 0 [pid 641] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 641] write(3, "1000", 4) = 4 executing program [pid 641] close(3) = 0 [pid 641] write(1, "executing program\n", 18) = 18 [pid 304] <... restart_syscall resumed>) = 0 [pid 641] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 641] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 641] <... rt_sigaction resumed>NULL, 8) = 0 [pid 304] <... openat resumed>) = 3 [pid 641] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 304] ioctl(3, LOOP_CLR_FD [pid 641] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 641] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 304] close(3 [pid 641] <... mmap resumed>) = 0x7fe6f87b1000 [pid 304] <... close resumed>) = 0 [pid 641] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 641] <... mprotect resumed>) = 0 [pid 641] rt_sigprocmask(SIG_BLOCK, ~[], [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 644 [pid 641] <... rt_sigprocmask resumed>[], 8) = 0 [pid 641] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 302] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 644 attached [pid 642] <... set_robust_list resumed>) = 0 [pid 644] set_robust_list(0x5555636e06a0, 24 [pid 642] rt_sigprocmask(SIG_SETMASK, [], [pid 641] <... clone3 resumed> => {parent_tid=[645]}, 88) = 645 [pid 644] <... set_robust_list resumed>) = 0 [pid 642] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 641] rt_sigprocmask(SIG_SETMASK, [], [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 644] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 642] memfd_create("syzkaller", 0 [pid 641] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 302] <... openat resumed>) = 3 [pid 641] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] ioctl(3, LOOP_CLR_FD [pid 641] <... futex resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 641] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 302] close(3) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 646 ./strace-static-x86_64: Process 643 attached [pid 643] set_robust_list(0x5555636e06a0, 24) = 0 [pid 643] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 643] setpgid(0, 0) = 0 [pid 643] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 643] write(3, "1000", 4executing program ) = 4 [pid 643] close(3) = 0 [pid 643] write(1, "executing program\n", 18) = 18 [pid 643] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 643] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 643] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 643] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 643] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 643] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 643] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 644] <... prctl resumed>) = 0 [pid 642] <... memfd_create resumed>) = 3 [pid 644] setpgid(0, 0 [pid 642] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 644] <... setpgid resumed>) = 0 [pid 642] <... mmap resumed>) = 0x7fe6f03b1000 [pid 643] <... clone3 resumed> => {parent_tid=[647]}, 88) = 647 [pid 643] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 643] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 643] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 645 attached [pid 645] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 645] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 645] memfd_create("syzkaller", 0) = 3 [pid 645] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 645] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 644] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 642] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 644] <... openat resumed>) = 3 [pid 644] write(3, "1000", 4 [pid 642] <... write resumed>) = 262144 [pid 644] <... write resumed>) = 4 [pid 642] munmap(0x7fe6f03b1000, 138412032 [pid 644] close(3) = 0 [pid 642] <... munmap resumed>) = 0 [pid 644] write(1, "executing program\n", 18 [pid 642] openat(AT_FDCWD, "/dev/loop3", O_RDWRexecuting program ./strace-static-x86_64: Process 646 attached [pid 644] <... write resumed>) = 18 [pid 642] <... openat resumed>) = 4 [pid 644] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 642] ioctl(4, LOOP_SET_FD, 3 [pid 646] set_robust_list(0x5555636e06a0, 24 [pid 644] <... futex resumed>) = 0 [pid 642] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 646] <... set_robust_list resumed>) = 0 [pid 644] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 642] ioctl(4, LOOP_CLR_FD [pid 644] <... rt_sigaction resumed>NULL, 8) = 0 [pid 642] <... ioctl resumed>) = 0 [pid 644] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 646] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 644] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 644] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 646] <... prctl resumed>) = 0 [pid 644] <... mmap resumed>) = 0x7fe6f87b1000 [pid 646] setpgid(0, 0 [pid 644] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 646] <... setpgid resumed>) = 0 [pid 644] <... mprotect resumed>) = 0 [pid 645] <... write resumed>) = 262144 [pid 644] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 646] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 644] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[648]}, 88) = 648 [pid 642] ioctl(4, LOOP_SET_FD, 3 [pid 646] <... openat resumed>) = 3 [pid 644] rt_sigprocmask(SIG_SETMASK, [], [pid 642] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 646] write(3, "1000", 4 [pid 644] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 642] close(4 [pid 644] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 642] <... close resumed>) = 0 [pid 646] <... write resumed>) = 4 [pid 644] <... futex resumed>) = 0 [pid 642] close(3 [pid 646] close(3 [pid 644] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 645] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 645] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 642] <... close resumed>) = 0 [pid 646] <... close resumed>) = 0 [pid 642] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 646] write(1, "executing program\n", 18 [pid 642] <... futex resumed>) = 1 [pid 640] <... futex resumed>) = 0 [pid 646] <... write resumed>) = 18 [pid 642] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 640] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 646] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 642] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 640] <... futex resumed>) = 0 [pid 646] <... futex resumed>) = 0 [pid 642] chdir("./file0" [pid 640] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 646] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 645] <... openat resumed>) = 4 [pid 642] <... chdir resumed>) = -1 ENOTDIR (Not a directory) ./strace-static-x86_64: Process 647 attached [pid 646] <... rt_sigaction resumed>NULL, 8) = 0 [pid 645] ioctl(4, LOOP_SET_FD, 3 [pid 642] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 647] set_robust_list(0x7fe6f87d19a0, 24 [pid 646] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 645] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 642] <... futex resumed>) = 1 [pid 640] <... futex resumed>) = 0 [pid 647] <... set_robust_list resumed>) = 0 [pid 646] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 645] ioctl(4, LOOP_CLR_FD [pid 642] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 640] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 647] rt_sigprocmask(SIG_SETMASK, [], [pid 646] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 645] <... ioctl resumed>) = 0 [pid 642] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 640] <... futex resumed>) = 0 [pid 647] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 646] <... mmap resumed>) = 0x7fe6f87b1000 [pid 642] creat("./bus", 000 [pid 640] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 647] memfd_create("syzkaller", 0 [pid 646] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 642] <... creat resumed>) = 3 [pid 642] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 646] <... mprotect resumed>) = 0 [pid 647] <... memfd_create resumed>) = 3 [pid 642] <... futex resumed>) = 1 [pid 640] <... futex resumed>) = 0 [pid 647] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 642] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 640] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 647] <... mmap resumed>) = 0x7fe6f03b1000 [pid 646] rt_sigprocmask(SIG_BLOCK, ~[], [pid 642] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 640] <... futex resumed>) = 0 ./strace-static-x86_64: Process 648 attached [pid 647] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 646] <... rt_sigprocmask resumed>[], 8) = 0 [pid 642] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 640] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 648] set_robust_list(0x7fe6f87d19a0, 24 [pid 646] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 645] ioctl(4, LOOP_SET_FD, 3 [pid 642] <... openat resumed>) = 4 [pid 648] <... set_robust_list resumed>) = 0 [pid 645] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 642] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 648] rt_sigprocmask(SIG_SETMASK, [], [pid 646] <... clone3 resumed> => {parent_tid=[649]}, 88) = 649 [pid 645] close(4 [pid 642] <... futex resumed>) = 1 [pid 640] <... futex resumed>) = 0 [pid 648] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 647] <... write resumed>) = 262144 [pid 646] rt_sigprocmask(SIG_SETMASK, [], [pid 645] <... close resumed>) = 0 [pid 642] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 640] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 648] memfd_create("syzkaller", 0 [pid 646] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 645] close(3 [pid 642] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 640] <... futex resumed>) = 0 [pid 648] <... memfd_create resumed>) = 3 [pid 646] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 645] <... close resumed>) = 0 [pid 642] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 640] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 648] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 646] <... futex resumed>) = 0 [pid 645] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 642] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 648] <... mmap resumed>) = 0x7fe6f03b1000 [pid 646] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 645] <... futex resumed>) = 1 [pid 642] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 641] <... futex resumed>) = 0 [pid 647] munmap(0x7fe6f03b1000, 138412032 [pid 645] chdir("./file0" [pid 641] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 647] <... munmap resumed>) = 0 [pid 645] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 641] <... futex resumed>) = 0 [pid 647] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 645] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 641] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 647] <... openat resumed>) = 4 [pid 645] <... futex resumed>) = 0 [pid 641] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 647] ioctl(4, LOOP_SET_FD, 3 [pid 645] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 641] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 647] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 645] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 641] <... futex resumed>) = 0 [pid 648] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 647] ioctl(4, LOOP_CLR_FD [pid 645] creat("./bus", 000 [pid 642] <... futex resumed>) = 1 [pid 641] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 640] <... futex resumed>) = 0 [pid 647] <... ioctl resumed>) = 0 [pid 645] <... creat resumed>) = 3 [pid 642] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 640] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 645] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 642] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 640] <... futex resumed>) = 0 [pid 648] <... write resumed>) = 262144 [pid 645] <... futex resumed>) = 1 [pid 642] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 641] <... futex resumed>) = 0 [pid 640] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 648] munmap(0x7fe6f03b1000, 138412032 [pid 645] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 642] <... open resumed>) = 5 [pid 641] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 648] <... munmap resumed>) = 0 [pid 645] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 642] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 641] <... futex resumed>) = 0 [pid 648] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 645] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 642] <... futex resumed>) = 1 [pid 641] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 640] <... futex resumed>) = 0 [pid 648] <... openat resumed>) = 4 [pid 647] ioctl(4, LOOP_SET_FD, 3 [pid 645] <... openat resumed>) = 4 [pid 640] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 647] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 645] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 640] <... futex resumed>) = 0 [pid 647] close(4 [pid 645] <... futex resumed>) = 1 [pid 641] <... futex resumed>) = 0 [pid 640] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 647] <... close resumed>) = 0 [pid 645] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 641] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 647] close(3 [pid 645] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 641] <... futex resumed>) = 0 [pid 647] <... close resumed>) = 0 [pid 645] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 641] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 647] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 643] <... futex resumed>) = 0 [pid 647] chdir("./file0" [pid 643] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 647] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 643] <... futex resumed>) = 0 [pid 647] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 643] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 647] <... futex resumed>) = 0 [pid 643] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 647] creat("./bus", 000 [pid 643] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 647] <... creat resumed>) = 3 [pid 643] <... futex resumed>) = 0 [pid 647] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 643] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 642] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 648] ioctl(4, LOOP_SET_FD, 3 [pid 647] <... futex resumed>) = 0 [pid 645] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 643] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 647] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 645] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 643] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 648] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 647] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 645] <... futex resumed>) = 1 [pid 643] <... futex resumed>) = 0 [pid 642] <... mmap resumed>) = 0x20000000 [pid 641] <... futex resumed>) = 0 ./strace-static-x86_64: Process 649 attached [pid 648] ioctl(4, LOOP_CLR_FD [pid 647] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 645] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 643] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 642] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 641] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 649] set_robust_list(0x7fe6f87d19a0, 24 [pid 648] <... ioctl resumed>) = 0 [pid 647] <... openat resumed>) = 4 [pid 645] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 642] <... futex resumed>) = 1 [pid 641] <... futex resumed>) = 0 [pid 640] <... futex resumed>) = 0 [pid 649] <... set_robust_list resumed>) = 0 [pid 647] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 645] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 642] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 641] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 640] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 649] rt_sigprocmask(SIG_SETMASK, [], [pid 647] <... futex resumed>) = 1 [pid 645] <... open resumed>) = 5 [pid 643] <... futex resumed>) = 0 [pid 642] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 640] <... futex resumed>) = 0 [pid 649] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 647] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 645] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 643] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 642] memfd_create("syzkaller", 0 [pid 640] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 649] memfd_create("syzkaller", 0 [pid 648] ioctl(4, LOOP_SET_FD, 3 [pid 647] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 645] <... futex resumed>) = 1 [pid 643] <... futex resumed>) = 0 [pid 642] <... memfd_create resumed>) = 6 [pid 641] <... futex resumed>) = 0 [pid 649] <... memfd_create resumed>) = 3 [pid 648] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 647] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 645] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 643] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 642] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 641] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 649] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 648] close(4 [pid 647] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 645] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 642] <... mmap resumed>) = 0x7fe6f03b1000 [pid 641] <... futex resumed>) = 0 [pid 649] <... mmap resumed>) = 0x7fe6f03b1000 [pid 648] <... close resumed>) = 0 [pid 647] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 645] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 641] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 649] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 648] close(3 [pid 647] <... futex resumed>) = 1 [pid 645] <... mmap resumed>) = 0x20000000 [pid 643] <... futex resumed>) = 0 [pid 642] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 649] <... write resumed>) = 262144 [pid 647] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 645] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 643] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 647] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 645] <... futex resumed>) = 1 [pid 643] <... futex resumed>) = 0 [pid 641] <... futex resumed>) = 0 [pid 647] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 645] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 643] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 641] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 649] munmap(0x7fe6f03b1000, 138412032 [pid 647] <... open resumed>) = 5 [pid 645] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 641] <... futex resumed>) = 0 [pid 649] <... munmap resumed>) = 0 [pid 647] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 645] memfd_create("syzkaller", 0 [pid 641] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 649] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 647] <... futex resumed>) = 1 [pid 645] <... memfd_create resumed>) = 6 [pid 643] <... futex resumed>) = 0 [pid 649] <... openat resumed>) = 4 [pid 647] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 645] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 643] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 649] ioctl(4, LOOP_SET_FD, 3 [pid 647] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 645] <... mmap resumed>) = 0x7fe6f03b1000 [pid 643] <... futex resumed>) = 0 [pid 649] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 648] <... close resumed>) = 0 [pid 647] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 645] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 643] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 642] <... write resumed>) = 131072 [pid 649] ioctl(4, LOOP_CLR_FD [pid 648] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 647] <... mmap resumed>) = 0x20000000 [pid 645] <... write resumed>) = 131072 [pid 642] munmap(0x7fe6f03b1000, 138412032 [pid 649] <... ioctl resumed>) = 0 [pid 648] <... futex resumed>) = 1 [pid 647] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 645] munmap(0x7fe6f03b1000, 138412032 [pid 644] <... futex resumed>) = 0 [pid 648] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 647] <... futex resumed>) = 1 [pid 645] <... munmap resumed>) = 0 [pid 644] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 643] <... futex resumed>) = 0 [pid 642] <... munmap resumed>) = 0 [pid 648] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 647] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 645] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 643] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 647] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 645] <... openat resumed>) = 7 [pid 643] <... futex resumed>) = 0 [pid 647] memfd_create("syzkaller", 0 [pid 645] ioctl(7, LOOP_SET_FD, 6 [pid 643] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 647] <... memfd_create resumed>) = 6 [pid 645] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 649] ioctl(4, LOOP_SET_FD, 3 [pid 647] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 645] ioctl(7, LOOP_CLR_FD [pid 649] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 647] <... mmap resumed>) = 0x7fe6f03b1000 [pid 645] <... ioctl resumed>) = 0 [pid 649] close(4 [pid 647] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 649] <... close resumed>) = 0 [pid 647] <... write resumed>) = 131072 [pid 649] close(3 [pid 648] chdir("./file0" [pid 647] munmap(0x7fe6f03b1000, 138412032 [pid 644] <... futex resumed>) = 0 [pid 642] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 649] <... close resumed>) = 0 [pid 648] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 647] <... munmap resumed>) = 0 [pid 644] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 649] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 648] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 647] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 642] <... openat resumed>) = 7 [pid 649] <... futex resumed>) = 1 [pid 648] <... futex resumed>) = 0 [pid 647] <... openat resumed>) = 7 [pid 646] <... futex resumed>) = 0 [pid 645] ioctl(7, LOOP_SET_FD, 6 [pid 644] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 642] ioctl(7, LOOP_SET_FD, 6 [pid 649] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 648] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 647] ioctl(7, LOOP_SET_FD, 6 [pid 646] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 645] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 644] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 642] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 649] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 648] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 647] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 646] <... futex resumed>) = 0 [pid 645] close(7 [pid 649] chdir("./file0" [pid 648] creat("./bus", 000 [pid 647] ioctl(7, LOOP_CLR_FD [pid 646] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 645] <... close resumed>) = 0 [pid 644] <... futex resumed>) = 0 [pid 642] ioctl(7, LOOP_CLR_FD [pid 649] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 648] <... creat resumed>) = 3 [pid 647] <... ioctl resumed>) = 0 [pid 645] close(6 [pid 649] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 648] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 645] <... close resumed>) = 0 [pid 644] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 642] <... ioctl resumed>) = 0 [pid 649] <... futex resumed>) = 1 [pid 648] <... futex resumed>) = 0 [pid 646] <... futex resumed>) = 0 [pid 645] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 644] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 649] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 648] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 646] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 645] <... futex resumed>) = 1 [pid 644] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 641] <... futex resumed>) = 0 [pid 649] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 648] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 646] <... futex resumed>) = 0 [pid 645] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 644] <... futex resumed>) = 0 [pid 641] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 649] creat("./bus", 000 [pid 648] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 646] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 645] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 644] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 641] <... futex resumed>) = 0 [pid 649] <... creat resumed>) = 3 [pid 648] <... openat resumed>) = 4 [pid 647] ioctl(7, LOOP_SET_FD, 6 [pid 645] mknod(0x20000000, 000 [pid 641] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 649] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 648] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 647] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 645] <... mknod resumed>) = -1 EEXIST (File exists) [pid 642] ioctl(7, LOOP_SET_FD, 6 [pid 649] <... futex resumed>) = 1 [pid 648] <... futex resumed>) = 1 [pid 647] close(7 [pid 646] <... futex resumed>) = 0 [pid 645] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 644] <... futex resumed>) = 0 [pid 642] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 649] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 648] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 647] <... close resumed>) = 0 [pid 646] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 645] <... futex resumed>) = 1 [pid 644] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 642] close(7 [pid 641] <... futex resumed>) = 0 [pid 649] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 648] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 647] close(6 [pid 646] <... futex resumed>) = 0 [pid 645] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 644] <... futex resumed>) = 0 [pid 642] <... close resumed>) = 0 [pid 641] exit_group(0 [pid 649] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 648] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 647] <... close resumed>) = 0 [pid 646] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 645] <... futex resumed>) = ? [pid 644] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 642] close(6 [pid 641] <... exit_group resumed>) = ? [pid 649] <... openat resumed>) = 4 [pid 648] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 647] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 645] +++ exited with 0 +++ [pid 642] <... close resumed>) = 0 [pid 641] +++ exited with 0 +++ [pid 649] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 648] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 647] <... futex resumed>) = 1 [pid 643] <... futex resumed>) = 0 [pid 642] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=641, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 649] <... futex resumed>) = 1 [pid 648] <... futex resumed>) = 1 [pid 647] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 646] <... futex resumed>) = 0 [pid 644] <... futex resumed>) = 0 [pid 643] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 642] <... futex resumed>) = 1 [pid 640] <... futex resumed>) = 0 [pid 649] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 648] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 647] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 646] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 644] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 643] <... futex resumed>) = 0 [pid 642] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 640] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 649] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 648] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 647] mknod(0x20000000, 000 [pid 646] <... futex resumed>) = 0 [pid 644] <... futex resumed>) = 0 [pid 643] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 642] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 640] <... futex resumed>) = 0 [pid 649] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 648] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 647] <... mknod resumed>) = -1 EEXIST (File exists) [pid 646] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 644] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 642] mknod(0x20000000, 000 [pid 640] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 649] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 648] <... open resumed>) = 5 [pid 647] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 642] <... mknod resumed>) = -1 EEXIST (File exists) [pid 649] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 648] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 647] <... futex resumed>) = 1 [pid 643] <... futex resumed>) = 0 [pid 642] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 649] <... futex resumed>) = 1 [pid 648] <... futex resumed>) = 1 [pid 647] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 646] <... futex resumed>) = 0 [pid 644] <... futex resumed>) = 0 [pid 643] exit_group(0 [pid 642] <... futex resumed>) = 1 [pid 640] <... futex resumed>) = 0 [pid 649] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 648] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 647] <... futex resumed>) = ? [pid 646] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 644] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 643] <... exit_group resumed>) = ? [pid 642] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 640] exit_group(0 [pid 649] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 648] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 647] +++ exited with 0 +++ [pid 646] <... futex resumed>) = 0 [pid 644] <... futex resumed>) = 0 [pid 643] +++ exited with 0 +++ [pid 642] <... futex resumed>) = ? [pid 640] <... exit_group resumed>) = ? [pid 649] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 648] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 646] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 644] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 642] +++ exited with 0 +++ [pid 640] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=643, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 649] <... open resumed>) = 5 [pid 648] <... mmap resumed>) = 0x20000000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=640, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 649] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 648] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 649] <... futex resumed>) = 1 [pid 648] <... futex resumed>) = 1 [pid 646] <... futex resumed>) = 0 [pid 644] <... futex resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 649] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 648] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 646] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 644] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... openat resumed>) = 3 [pid 649] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 648] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 646] <... futex resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 649] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 646] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... ioctl resumed>) = 0 [pid 649] <... mmap resumed>) = 0x20000000 [pid 648] memfd_create("syzkaller", 0 [pid 644] <... futex resumed>) = 0 [pid 306] close(3 [pid 649] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 648] <... memfd_create resumed>) = 6 [pid 644] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 306] <... close resumed>) = 0 [pid 649] <... futex resumed>) = 1 [pid 648] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 646] <... futex resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 649] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 648] <... mmap resumed>) = 0x7fe6f03b1000 [pid 646] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 649] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 646] <... futex resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 651 [pid 649] memfd_create("syzkaller", 0 [pid 646] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 649] <... memfd_create resumed>) = 6 [pid 649] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 649] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 648] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 649] <... write resumed>) = 131072 [pid 649] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 648] <... write resumed>) = 131072 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 649] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 648] munmap(0x7fe6f03b1000, 138412032 [pid 303] <... openat resumed>) = 3 [pid 649] <... openat resumed>) = 7 [pid 303] ioctl(3, LOOP_CLR_FD [pid 648] <... munmap resumed>) = 0 [pid 649] ioctl(7, LOOP_SET_FD, 6 [pid 305] <... restart_syscall resumed>) = 0 [pid 648] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 303] <... ioctl resumed>) = 0 [pid 649] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 648] <... openat resumed>) = 7 [pid 303] close(3 [pid 649] ioctl(7, LOOP_CLR_FD [pid 648] ioctl(7, LOOP_SET_FD, 6 [pid 303] <... close resumed>) = 0 [pid 649] <... ioctl resumed>) = 0 [pid 648] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 648] ioctl(7, LOOP_CLR_FD [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 648] <... ioctl resumed>) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 652 [pid 305] <... openat resumed>) = 3 [pid 305] ioctl(3, LOOP_CLR_FD) = 0 [pid 305] close(3) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 652 attached [pid 649] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 649] close(7) = 0 [pid 649] close(6 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 653 [pid 649] <... close resumed>) = 0 [pid 649] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 648] ioctl(7, LOOP_SET_FD, 6 [pid 649] <... futex resumed>) = 1 [pid 648] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 646] <... futex resumed>) = 0 [pid 649] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 648] close(7 [pid 646] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 649] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 648] <... close resumed>) = 0 [pid 646] <... futex resumed>) = 0 [pid 649] mknod(0x20000000, 000 [pid 648] close(6 [pid 646] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 649] <... mknod resumed>) = -1 EEXIST (File exists) [pid 649] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 646] <... futex resumed>) = 0 [pid 649] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 648] <... close resumed>) = 0 [pid 646] exit_group(0 [pid 649] <... futex resumed>) = ? [pid 648] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 646] <... exit_group resumed>) = ? [pid 649] +++ exited with 0 +++ [pid 648] <... futex resumed>) = 1 [pid 646] +++ exited with 0 +++ [pid 644] <... futex resumed>) = 0 [pid 648] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 644] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=646, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 648] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 644] <... futex resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 648] mknod(0x20000000, 000 [pid 644] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 648] <... mknod resumed>) = -1 EEXIST (File exists) [pid 648] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 644] <... futex resumed>) = 0 [pid 648] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 644] exit_group(0 [pid 648] <... futex resumed>) = ? [pid 644] <... exit_group resumed>) = ? [pid 648] +++ exited with 0 +++ [pid 652] set_robust_list(0x5555636e06a0, 24) = 0 [pid 652] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 644] +++ exited with 0 +++ [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=644, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 652] <... prctl resumed>) = 0 [pid 652] setpgid(0, 0) = 0 [pid 652] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 652] write(3, "1000", 4) = 4 [pid 652] close(3) = 0 [pid 652] write(1, "executing program\n", 18executing program ) = 18 [pid 652] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... restart_syscall resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 304] ioctl(3, LOOP_CLR_FD) = 0 [pid 304] close(3) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 302] <... restart_syscall resumed>) = 0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 654 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 302] ioctl(3, LOOP_CLR_FD) = 0 [pid 302] close(3) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 655 [pid 652] <... futex resumed>) = 0 [pid 652] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 652] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 652] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 652] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 652] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 652] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[656]}, 88) = 656 [pid 652] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 652] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 652] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 653 attached [pid 653] set_robust_list(0x5555636e06a0, 24) = 0 ./strace-static-x86_64: Process 656 attached ./strace-static-x86_64: Process 654 attached ./strace-static-x86_64: Process 651 attached [pid 653] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 656] set_robust_list(0x7fe6f87d19a0, 24 [pid 651] set_robust_list(0x5555636e06a0, 24 [pid 656] <... set_robust_list resumed>) = 0 [pid 654] set_robust_list(0x5555636e06a0, 24 [pid 651] <... set_robust_list resumed>) = 0 [pid 656] rt_sigprocmask(SIG_SETMASK, [], [pid 654] <... set_robust_list resumed>) = 0 [pid 656] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 654] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 651] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 656] memfd_create("syzkaller", 0 [pid 654] <... prctl resumed>) = 0 [pid 651] <... prctl resumed>) = 0 [pid 656] <... memfd_create resumed>) = 3 [pid 654] setpgid(0, 0 [pid 651] setpgid(0, 0 [pid 656] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 654] <... setpgid resumed>) = 0 [pid 651] <... setpgid resumed>) = 0 [pid 656] <... mmap resumed>) = 0x7fe6f03b1000 [pid 654] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 651] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 655 attached [pid 654] <... openat resumed>) = 3 [pid 654] write(3, "1000", 4 [pid 651] <... openat resumed>) = 3 [pid 654] <... write resumed>) = 4 [pid 651] write(3, "1000", 4 [pid 654] close(3 [pid 651] <... write resumed>) = 4 [pid 654] <... close resumed>) = 0 [pid 651] close(3executing program [pid 653] <... prctl resumed>) = 0 [pid 651] <... close resumed>) = 0 [pid 654] write(1, "executing program\n", 18 [pid 651] write(1, "executing program\n", 18executing program [pid 654] <... write resumed>) = 18 [pid 651] <... write resumed>) = 18 [pid 654] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 651] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 654] <... futex resumed>) = 0 [pid 653] setpgid(0, 0 [pid 651] <... futex resumed>) = 0 [pid 655] set_robust_list(0x5555636e06a0, 24 [pid 654] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 651] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 655] <... set_robust_list resumed>) = 0 [pid 654] <... rt_sigaction resumed>NULL, 8) = 0 [pid 653] <... setpgid resumed>) = 0 [pid 651] <... rt_sigaction resumed>NULL, 8) = 0 [pid 655] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 654] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 653] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 651] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 656] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 655] <... prctl resumed>) = 0 [pid 654] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 653] <... openat resumed>) = 3 [pid 651] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 655] setpgid(0, 0 [pid 654] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 653] write(3, "1000", 4 [pid 651] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 655] <... setpgid resumed>) = 0 [pid 654] <... mmap resumed>) = 0x7fe6f87b1000 [pid 653] <... write resumed>) = 4 [pid 651] <... mmap resumed>) = 0x7fe6f87b1000 [pid 655] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 654] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 653] close(3 [pid 651] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 654] <... mprotect resumed>) = 0 [pid 651] <... mprotect resumed>) = 0 [pid 655] <... openat resumed>) = 3 [pid 654] rt_sigprocmask(SIG_BLOCK, ~[], [pid 653] <... close resumed>) = 0 [pid 651] rt_sigprocmask(SIG_BLOCK, ~[], [pid 656] <... write resumed>) = 262144 [pid 654] <... rt_sigprocmask resumed>[], 8) = 0 [pid 651] <... rt_sigprocmask resumed>[], 8) = 0 [pid 656] munmap(0x7fe6f03b1000, 138412032 [pid 654] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 651] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0}executing program [pid 655] write(3, "1000", 4 [pid 653] write(1, "executing program\n", 18 [pid 656] <... munmap resumed>) = 0 [pid 654] <... clone3 resumed> => {parent_tid=[657]}, 88) = 657 [pid 651] <... clone3 resumed> => {parent_tid=[658]}, 88) = 658 [pid 655] <... write resumed>) = 4 [pid 653] <... write resumed>) = 18 [pid 655] close(3 [pid 653] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 656] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 655] <... close resumed>) = 0 [pid 654] rt_sigprocmask(SIG_SETMASK, [], [pid 653] <... futex resumed>) = 0 [pid 651] rt_sigprocmask(SIG_SETMASK, [], [pid 654] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 651] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 656] <... openat resumed>) = 4 [pid 654] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 651] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 656] ioctl(4, LOOP_SET_FD, 3 [pid 654] <... futex resumed>) = 0 [pid 651] <... futex resumed>) = 0 [pid 656] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 654] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 651] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 656] ioctl(4, LOOP_CLR_FDexecuting program ) = 0 [pid 655] write(1, "executing program\n", 18 [pid 653] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 655] <... write resumed>) = 18 [pid 653] <... rt_sigaction resumed>NULL, 8) = 0 [pid 655] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 653] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 655] <... futex resumed>) = 0 [pid 653] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 655] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 653] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 655] <... rt_sigaction resumed>NULL, 8) = 0 [pid 653] <... mmap resumed>) = 0x7fe6f87b1000 [pid 655] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 653] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 655] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 653] <... mprotect resumed>) = 0 [pid 655] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 653] rt_sigprocmask(SIG_BLOCK, ~[], [pid 655] <... mmap resumed>) = 0x7fe6f87b1000 [pid 653] <... rt_sigprocmask resumed>[], 8) = 0 [pid 655] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 653] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 655] <... mprotect resumed>) = 0 [pid 655] rt_sigprocmask(SIG_BLOCK, ~[], [pid 653] <... clone3 resumed> => {parent_tid=[659]}, 88) = 659 ./strace-static-x86_64: Process 658 attached [pid 655] <... rt_sigprocmask resumed>[], 8) = 0 [pid 653] rt_sigprocmask(SIG_SETMASK, [], [pid 658] set_robust_list(0x7fe6f87d19a0, 24 [pid 655] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 653] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 657 attached [pid 658] <... set_robust_list resumed>) = 0 [pid 653] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 658] rt_sigprocmask(SIG_SETMASK, [], [pid 657] set_robust_list(0x7fe6f87d19a0, 24 [pid 655] <... clone3 resumed> => {parent_tid=[660]}, 88) = 660 [pid 653] <... futex resumed>) = 0 [pid 658] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 657] <... set_robust_list resumed>) = 0 [pid 656] ioctl(4, LOOP_SET_FD, 3 [pid 655] rt_sigprocmask(SIG_SETMASK, [], [pid 653] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 658] memfd_create("syzkaller", 0 [pid 657] rt_sigprocmask(SIG_SETMASK, [], [pid 656] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 655] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 658] <... memfd_create resumed>) = 3 [pid 657] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 656] close(4 [pid 655] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 658] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 657] memfd_create("syzkaller", 0 [pid 656] <... close resumed>) = 0 [pid 655] <... futex resumed>) = 0 [pid 658] <... mmap resumed>) = 0x7fe6f03b1000 [pid 657] <... memfd_create resumed>) = 3 [pid 656] close(3 [pid 655] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 657] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 658] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 657] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 656] <... close resumed>) = 0 [pid 656] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 652] <... futex resumed>) = 0 [pid 656] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 652] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 656] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 652] <... futex resumed>) = 0 [pid 656] chdir("./file0" [pid 652] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 656] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 658] <... write resumed>) = 262144 [pid 656] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 658] munmap(0x7fe6f03b1000, 138412032 [pid 656] <... futex resumed>) = 1 [pid 652] <... futex resumed>) = 0 [pid 658] <... munmap resumed>) = 0 [pid 656] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 652] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 656] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 652] <... futex resumed>) = 0 [pid 652] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 659 attached [pid 659] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 659] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 659] memfd_create("syzkaller", 0) = 3 [pid 659] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 657] <... write resumed>) = 262144 [pid 657] munmap(0x7fe6f03b1000, 138412032) = 0 ./strace-static-x86_64: Process 660 attached [pid 658] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 656] creat("./bus", 000) = 3 [pid 660] set_robust_list(0x7fe6f87d19a0, 24 [pid 658] <... openat resumed>) = 4 [pid 656] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 657] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 656] <... futex resumed>) = 1 [pid 652] <... futex resumed>) = 0 [pid 660] <... set_robust_list resumed>) = 0 [pid 659] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 658] ioctl(4, LOOP_SET_FD, 3 [pid 657] <... openat resumed>) = 4 [pid 656] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 652] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 660] rt_sigprocmask(SIG_SETMASK, [], [pid 658] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 657] ioctl(4, LOOP_SET_FD, 3 [pid 656] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 652] <... futex resumed>) = 0 [pid 660] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 658] ioctl(4, LOOP_CLR_FD [pid 657] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 656] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 652] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 658] <... ioctl resumed>) = 0 [pid 657] ioctl(4, LOOP_CLR_FD [pid 656] <... openat resumed>) = 4 [pid 660] memfd_create("syzkaller", 0 [pid 656] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 660] <... memfd_create resumed>) = 3 [pid 657] <... ioctl resumed>) = 0 [pid 656] <... futex resumed>) = 1 [pid 652] <... futex resumed>) = 0 [pid 660] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 656] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 652] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 660] <... mmap resumed>) = 0x7fe6f03b1000 [pid 656] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 652] <... futex resumed>) = 0 [pid 656] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 652] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 659] <... write resumed>) = 262144 [pid 656] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 657] ioctl(4, LOOP_SET_FD, 3 [pid 656] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 658] ioctl(4, LOOP_SET_FD, 3 [pid 657] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 656] <... futex resumed>) = 1 [pid 652] <... futex resumed>) = 0 [pid 658] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 657] close(4 [pid 660] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 656] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 652] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 658] close(4 [pid 657] <... close resumed>) = 0 [pid 656] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 652] <... futex resumed>) = 0 [pid 658] <... close resumed>) = 0 [pid 657] close(3 [pid 656] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 652] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 660] <... write resumed>) = 262144 [pid 658] close(3 [pid 657] <... close resumed>) = 0 [pid 656] <... open resumed>) = 5 [pid 657] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 656] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 659] munmap(0x7fe6f03b1000, 138412032 [pid 657] <... futex resumed>) = 1 [pid 656] <... futex resumed>) = 1 [pid 654] <... futex resumed>) = 0 [pid 652] <... futex resumed>) = 0 [pid 660] munmap(0x7fe6f03b1000, 138412032 [pid 659] <... munmap resumed>) = 0 [pid 658] <... close resumed>) = 0 [pid 657] chdir("./file0" [pid 656] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 654] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 652] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 660] <... munmap resumed>) = 0 [pid 659] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 658] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 657] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 656] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 654] <... futex resumed>) = 0 [pid 652] <... futex resumed>) = 0 [pid 660] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 659] <... openat resumed>) = 4 [pid 658] <... futex resumed>) = 1 [pid 657] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 656] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 654] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 652] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 651] <... futex resumed>) = 0 [pid 660] <... openat resumed>) = 4 [pid 659] ioctl(4, LOOP_SET_FD, 3 [pid 658] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 657] <... futex resumed>) = 0 [pid 656] <... mmap resumed>) = 0x20000000 [pid 654] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 651] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 660] ioctl(4, LOOP_SET_FD, 3 [pid 659] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 658] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 657] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 656] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 654] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 651] <... futex resumed>) = 0 [pid 660] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 659] ioctl(4, LOOP_CLR_FD [pid 658] chdir("./file0" [pid 657] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 656] <... futex resumed>) = 1 [pid 654] <... futex resumed>) = 0 [pid 652] <... futex resumed>) = 0 [pid 651] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 659] <... ioctl resumed>) = 0 [pid 657] creat("./bus", 000 [pid 652] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 657] <... creat resumed>) = 3 [pid 652] <... futex resumed>) = 0 [pid 657] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 652] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 657] <... futex resumed>) = 0 [pid 657] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 659] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 659] close(4) = 0 [pid 659] close(3) = 0 [pid 659] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 653] <... futex resumed>) = 0 [pid 659] chdir("./file0" [pid 653] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 660] ioctl(4, LOOP_CLR_FD [pid 659] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 658] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 656] memfd_create("syzkaller", 0 [pid 654] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 653] <... futex resumed>) = 0 [pid 660] <... ioctl resumed>) = 0 [pid 659] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 658] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 656] <... memfd_create resumed>) = 6 [pid 654] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 653] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 659] <... futex resumed>) = 0 [pid 658] <... futex resumed>) = 1 [pid 656] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 653] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 651] <... futex resumed>) = 0 [pid 659] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 653] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 659] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 653] <... futex resumed>) = 0 [pid 659] creat("./bus", 000 [pid 653] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 659] <... creat resumed>) = 3 [pid 659] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 653] <... futex resumed>) = 0 [pid 659] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 653] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 659] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 653] <... futex resumed>) = 0 [pid 659] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 653] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 659] <... openat resumed>) = 4 [pid 659] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 653] <... futex resumed>) = 0 [pid 659] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 653] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 659] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 653] <... futex resumed>) = 0 [pid 659] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 653] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 659] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 659] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 653] <... futex resumed>) = 0 [pid 659] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 653] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 659] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 653] <... futex resumed>) = 0 [pid 659] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 653] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 659] <... open resumed>) = 5 [pid 659] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 653] <... futex resumed>) = 0 [pid 659] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 653] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 659] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 653] <... futex resumed>) = 0 [pid 659] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 653] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 659] <... mmap resumed>) = 0x20000000 [pid 659] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 653] <... futex resumed>) = 0 [pid 659] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 653] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 659] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 653] <... futex resumed>) = 0 [pid 659] memfd_create("syzkaller", 0 [pid 653] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 659] <... memfd_create resumed>) = 6 [pid 659] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 659] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 659] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 659] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 7 [pid 659] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 659] ioctl(7, LOOP_CLR_FD) = 0 [pid 654] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 657] <... futex resumed>) = 0 [pid 654] <... futex resumed>) = 1 [pid 657] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 654] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 657] <... openat resumed>) = 4 [pid 657] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 654] <... futex resumed>) = 0 [pid 657] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 654] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 657] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 654] <... futex resumed>) = 0 [pid 657] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 654] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 657] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 659] ioctl(7, LOOP_SET_FD, 6 [pid 657] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 659] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 657] <... futex resumed>) = 1 [pid 654] <... futex resumed>) = 0 [pid 659] close(7 [pid 657] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 654] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 659] <... close resumed>) = 0 [pid 657] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 654] <... futex resumed>) = 0 [pid 659] close(6 [pid 657] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 656] <... mmap resumed>) = 0x7fe6f03b1000 [pid 654] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 651] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 659] <... close resumed>) = 0 [pid 657] <... open resumed>) = 5 [pid 659] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 657] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 659] <... futex resumed>) = 1 [pid 657] <... futex resumed>) = 1 [pid 654] <... futex resumed>) = 0 [pid 653] <... futex resumed>) = 0 [pid 659] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 657] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 654] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 653] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 659] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 657] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 654] <... futex resumed>) = 0 [pid 653] <... futex resumed>) = 0 [pid 659] mknod(0x20000000, 000 [pid 657] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 654] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 653] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 659] <... mknod resumed>) = -1 EEXIST (File exists) [pid 657] <... mmap resumed>) = 0x20000000 [pid 659] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 657] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 659] <... futex resumed>) = 1 [pid 657] <... futex resumed>) = 1 [pid 654] <... futex resumed>) = 0 [pid 653] <... futex resumed>) = 0 [pid 659] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 657] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 654] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 653] exit_group(0 [pid 659] <... futex resumed>) = ? [pid 657] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 654] <... futex resumed>) = 0 [pid 653] <... exit_group resumed>) = ? [pid 659] +++ exited with 0 +++ [pid 657] memfd_create("syzkaller", 0 [pid 654] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 653] +++ exited with 0 +++ [pid 651] <... futex resumed>) = 0 [pid 658] creat("./bus", 000 [pid 657] <... memfd_create resumed>) = 6 [pid 656] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 651] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 658] <... creat resumed>) = 3 [pid 657] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 656] <... write resumed>) = 131072 [pid 658] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 657] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 656] munmap(0x7fe6f03b1000, 138412032 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=653, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 658] <... futex resumed>) = 1 [pid 657] <... write resumed>) = 131072 [pid 651] <... futex resumed>) = 0 [pid 657] munmap(0x7fe6f03b1000, 138412032 [pid 658] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 657] <... munmap resumed>) = 0 [pid 656] <... munmap resumed>) = 0 [pid 651] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 658] <... openat resumed>) = 4 [pid 657] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 658] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 657] <... openat resumed>) = 7 [pid 656] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 651] <... futex resumed>) = 0 [pid 658] <... futex resumed>) = 0 [pid 657] ioctl(7, LOOP_SET_FD, 6 [pid 658] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 657] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 656] <... openat resumed>) = 7 [pid 651] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 657] ioctl(7, LOOP_CLR_FD) = 0 [pid 656] ioctl(7, LOOP_SET_FD, 6 [pid 651] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 660] ioctl(4, LOOP_SET_FD, 3 [pid 656] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 651] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 658] <... futex resumed>) = 0 [pid 660] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 656] ioctl(7, LOOP_CLR_FD [pid 651] <... futex resumed>) = 1 [pid 660] close(4 [pid 658] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 656] <... ioctl resumed>) = 0 [pid 651] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 660] <... close resumed>) = 0 [pid 660] close(3 [pid 657] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 657] close(7) = 0 [pid 657] close(6) = 0 [pid 657] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 656] ioctl(7, LOOP_SET_FD, 6 [pid 654] <... futex resumed>) = 0 [pid 657] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 656] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 654] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 657] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 656] close(7 [pid 654] <... futex resumed>) = 0 [pid 660] <... close resumed>) = 0 [pid 657] mknod(0x20000000, 000 [pid 656] <... close resumed>) = 0 [pid 654] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... restart_syscall resumed>) = 0 [pid 660] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 657] <... mknod resumed>) = -1 EEXIST (File exists) [pid 656] close(6 [pid 657] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 654] <... futex resumed>) = 0 [pid 657] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 654] exit_group(0 [pid 660] <... futex resumed>) = 1 [pid 657] <... futex resumed>) = ? [pid 656] <... close resumed>) = 0 [pid 655] <... futex resumed>) = 0 [pid 654] <... exit_group resumed>) = ? [pid 660] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 658] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 657] +++ exited with 0 +++ [pid 656] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 655] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 654] +++ exited with 0 +++ [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 660] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 658] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 656] <... futex resumed>) = 1 [pid 655] <... futex resumed>) = 0 [pid 652] <... futex resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=654, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 660] chdir("./file0" [pid 658] <... futex resumed>) = 1 [pid 656] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 655] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 652] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 651] <... futex resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 660] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 658] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 656] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 652] <... futex resumed>) = 0 [pid 651] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... ioctl resumed>) = 0 [pid 660] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 658] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 656] mknod(0x20000000, 000 [pid 652] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 651] <... futex resumed>) = 0 [pid 305] close(3 [pid 660] <... futex resumed>) = 1 [pid 658] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 656] <... mknod resumed>) = -1 EEXIST (File exists) [pid 655] <... futex resumed>) = 0 [pid 651] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... close resumed>) = 0 [pid 660] creat("./bus", 000 [pid 658] <... open resumed>) = 5 [pid 656] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 655] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 660] <... creat resumed>) = 3 [pid 658] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 656] <... futex resumed>) = 1 [pid 655] <... futex resumed>) = 0 [pid 652] <... futex resumed>) = 0 [pid 660] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 658] <... futex resumed>) = 1 [pid 656] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 655] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 652] exit_group(0 [pid 651] <... futex resumed>) = 0 [pid 660] <... futex resumed>) = 0 [pid 658] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 656] <... futex resumed>) = ? [pid 655] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 652] <... exit_group resumed>) = ? [pid 651] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 661 ./strace-static-x86_64: Process 661 attached [pid 660] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 658] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 656] +++ exited with 0 +++ [pid 655] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 652] +++ exited with 0 +++ [pid 651] <... futex resumed>) = 0 [pid 661] set_robust_list(0x5555636e06a0, 24 [pid 660] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 658] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 655] <... futex resumed>) = 0 [pid 651] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... restart_syscall resumed>) = 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=652, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 661] <... set_robust_list resumed>) = 0 [pid 660] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 658] <... mmap resumed>) = 0x20000000 [pid 655] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 304] ioctl(3, LOOP_CLR_FD) = 0 [pid 304] close(3) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 662 [pid 303] <... restart_syscall resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 303] ioctl(3, LOOP_CLR_FD [pid 661] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 660] <... openat resumed>) = 4 [pid 658] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... ioctl resumed>) = 0 [pid 303] close(3) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 663 [pid 661] <... prctl resumed>) = 0 [pid 660] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 658] <... futex resumed>) = 1 [pid 651] <... futex resumed>) = 0 [pid 661] setpgid(0, 0 [pid 660] <... futex resumed>) = 1 [pid 658] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 655] <... futex resumed>) = 0 [pid 651] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 661] <... setpgid resumed>) = 0 [pid 660] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 658] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 655] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 651] <... futex resumed>) = 0 [pid 660] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 658] memfd_create("syzkaller", 0 [pid 655] <... futex resumed>) = 0 [pid 651] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 661] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 660] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 658] <... memfd_create resumed>) = 6 [pid 655] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 660] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 658] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 661] <... openat resumed>) = 3 [pid 660] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 658] <... mmap resumed>) = 0x7fe6f03b1000 [pid 660] <... futex resumed>) = 1 [pid 655] <... futex resumed>) = 0 [pid 655] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 655] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 662 attached [pid 662] set_robust_list(0x5555636e06a0, 24) = 0 [pid 662] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 663 attached [pid 658] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 663] set_robust_list(0x5555636e06a0, 24) = 0 [pid 663] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 662] <... prctl resumed>) = 0 [pid 662] setpgid(0, 0) = 0 [pid 662] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 660] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 663] <... prctl resumed>) = 0 [pid 663] setpgid(0, 0) = 0 [pid 663] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 662] <... openat resumed>) = 3 [pid 658] <... write resumed>) = 131072 [pid 661] write(3, "1000", 4 [pid 660] <... open resumed>) = 5 [pid 658] munmap(0x7fe6f03b1000, 138412032 [pid 661] <... write resumed>) = 4 [pid 660] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 661] close(3 [pid 660] <... futex resumed>) = 1 [pid 658] <... munmap resumed>) = 0 [pid 655] <... futex resumed>) = 0 [pid 663] <... openat resumed>) = 3 [pid 662] write(3, "1000", 4 [pid 661] <... close resumed>) = 0 [pid 660] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 658] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 655] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 663] write(3, "1000", 4 [pid 662] <... write resumed>) = 4 [pid 661] write(1, "executing program\n", 18 [pid 660] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 658] <... openat resumed>) = 7 [pid 655] <... futex resumed>) = 0 [pid 663] <... write resumed>) = 4 [pid 662] close(3 [pid 661] <... write resumed>) = 18 [pid 660] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 658] ioctl(7, LOOP_SET_FD, 6 [pid 655] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 663] close(3 [pid 662] <... close resumed>) = 0 [pid 660] <... mmap resumed>) = 0x20000000 [pid 658] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 661] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 660] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 663] <... close resumed>) = 0 [pid 662] write(1, "executing program\n", 18 [pid 661] <... futex resumed>) = 0 [pid 658] ioctl(7, LOOP_CLR_FDexecuting program [pid 663] write(1, "executing program\n", 18 [pid 662] <... write resumed>) = 18 [pid 661] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 660] <... futex resumed>) = 1 [pid 658] <... ioctl resumed>) = 0 [pid 655] <... futex resumed>) = 0 [pid 663] <... write resumed>) = 18 [pid 662] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 661] <... rt_sigaction resumed>NULL, 8) = 0 [pid 660] memfd_create("syzkaller", 0 [pid 655] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 663] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 662] <... futex resumed>) = 0 [pid 661] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 660] <... memfd_create resumed>) = 6 [pid 655] <... futex resumed>) = 0 [pid 663] <... futex resumed>) = 0 [pid 662] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 661] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 660] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 655] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 663] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 662] <... rt_sigaction resumed>NULL, 8) = 0 [pid 661] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 660] <... mmap resumed>) = 0x7fe6f03b1000 [pid 663] <... rt_sigaction resumed>NULL, 8) = 0 [pid 662] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 661] <... mmap resumed>) = 0x7fe6f87b1000 [pid 663] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 662] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 663] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 662] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 663] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 662] <... mmap resumed>) = 0x7fe6f87b1000 [pid 663] <... mmap resumed>) = 0x7fe6f87b1000 [pid 662] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 663] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 662] <... mprotect resumed>) = 0 [pid 663] <... mprotect resumed>) = 0 [pid 662] rt_sigprocmask(SIG_BLOCK, ~[], [pid 661] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 660] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 661] <... mprotect resumed>) = 0 [pid 663] rt_sigprocmask(SIG_BLOCK, ~[], [pid 662] <... rt_sigprocmask resumed>[], 8) = 0 [pid 663] <... rt_sigprocmask resumed>[], 8) = 0 [pid 662] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 660] <... write resumed>) = 131072 [pid 658] ioctl(7, LOOP_SET_FD, 6 [pid 663] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 661] rt_sigprocmask(SIG_BLOCK, ~[], [pid 660] munmap(0x7fe6f03b1000, 138412032 [pid 658] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 661] <... rt_sigprocmask resumed>[], 8) = 0 [pid 663] <... clone3 resumed> => {parent_tid=[665]}, 88) = 665 [pid 662] <... clone3 resumed> => {parent_tid=[664]}, 88) = 664 [pid 661] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 660] <... munmap resumed>) = 0 [pid 658] close(7 [pid 663] rt_sigprocmask(SIG_SETMASK, [], [pid 662] rt_sigprocmask(SIG_SETMASK, [], [pid 663] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 662] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 660] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 658] <... close resumed>) = 0 [pid 663] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 662] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 661] <... clone3 resumed> => {parent_tid=[666]}, 88) = 666 [pid 663] <... futex resumed>) = 0 [pid 662] <... futex resumed>) = 0 [pid 660] <... openat resumed>) = 7 [pid 658] close(6 [pid 663] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 662] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 661] rt_sigprocmask(SIG_SETMASK, [], [pid 660] ioctl(7, LOOP_SET_FD, 6./strace-static-x86_64: Process 664 attached [pid 664] set_robust_list(0x7fe6f87d19a0, 24 [pid 661] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 660] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 658] <... close resumed>) = 0 [pid 661] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 660] ioctl(7, LOOP_CLR_FD [pid 658] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 661] <... futex resumed>) = 0 [pid 660] <... ioctl resumed>) = 0 [pid 658] <... futex resumed>) = 1 [pid 651] <... futex resumed>) = 0 [pid 661] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 658] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 651] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 666 attached ./strace-static-x86_64: Process 665 attached [pid 658] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 651] <... futex resumed>) = 0 [pid 658] mknod(0x20000000, 000 [pid 651] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 666] set_robust_list(0x7fe6f87d19a0, 24 [pid 665] set_robust_list(0x7fe6f87d19a0, 24 [pid 658] <... mknod resumed>) = -1 EEXIST (File exists) [pid 666] <... set_robust_list resumed>) = 0 [pid 665] <... set_robust_list resumed>) = 0 [pid 658] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 666] rt_sigprocmask(SIG_SETMASK, [], [pid 665] rt_sigprocmask(SIG_SETMASK, [], [pid 658] <... futex resumed>) = 1 [pid 651] <... futex resumed>) = 0 [pid 658] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 666] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 665] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 651] exit_group(0 [pid 658] <... futex resumed>) = ? [pid 651] <... exit_group resumed>) = ? [pid 664] <... set_robust_list resumed>) = 0 [pid 660] ioctl(7, LOOP_SET_FD, 6 [pid 664] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 660] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 658] +++ exited with 0 +++ [pid 651] +++ exited with 0 +++ [pid 666] memfd_create("syzkaller", 0 [pid 664] memfd_create("syzkaller", 0 [pid 660] close(7 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=651, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 666] <... memfd_create resumed>) = 3 [pid 665] memfd_create("syzkaller", 0 [pid 664] <... memfd_create resumed>) = 3 [pid 660] <... close resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 666] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 665] <... memfd_create resumed>) = 3 [pid 664] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 660] close(6 [pid 664] <... mmap resumed>) = 0x7fe6f03b1000 [pid 666] <... mmap resumed>) = 0x7fe6f03b1000 [pid 665] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 664] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 660] <... close resumed>) = 0 [pid 660] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 665] <... mmap resumed>) = 0x7fe6f03b1000 [pid 660] <... futex resumed>) = 1 [pid 655] <... futex resumed>) = 0 [pid 660] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 655] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 660] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 655] <... futex resumed>) = 0 [pid 660] mknod(0x20000000, 000 [pid 655] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 660] <... mknod resumed>) = -1 EEXIST (File exists) [pid 666] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 665] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 660] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 655] <... futex resumed>) = 0 [pid 660] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 655] exit_group(0 [pid 660] <... futex resumed>) = ? [pid 655] <... exit_group resumed>) = ? [pid 660] +++ exited with 0 +++ [pid 655] +++ exited with 0 +++ [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=655, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 306] <... restart_syscall resumed>) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 664] <... write resumed>) = 262144 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 666] <... write resumed>) = 262144 [pid 665] <... write resumed>) = 262144 [pid 664] munmap(0x7fe6f03b1000, 138412032 [pid 306] <... ioctl resumed>) = 0 [pid 666] munmap(0x7fe6f03b1000, 138412032 [pid 665] munmap(0x7fe6f03b1000, 138412032 [pid 302] <... openat resumed>) = 3 [pid 306] close(3 [pid 666] <... munmap resumed>) = 0 [pid 665] <... munmap resumed>) = 0 [pid 664] <... munmap resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 306] <... close resumed>) = 0 [pid 666] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 665] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 302] <... ioctl resumed>) = 0 [pid 666] <... openat resumed>) = 4 [pid 665] <... openat resumed>) = 4 [pid 664] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 666] ioctl(4, LOOP_SET_FD, 3 [pid 665] ioctl(4, LOOP_SET_FD, 3 [pid 666] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 665] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 664] <... openat resumed>) = 4 [pid 666] ioctl(4, LOOP_CLR_FD [pid 665] ioctl(4, LOOP_CLR_FD [pid 666] <... ioctl resumed>) = 0 [pid 665] <... ioctl resumed>) = 0 [pid 664] ioctl(4, LOOP_SET_FD, 3 [pid 302] close(3 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 667 [pid 664] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 302] <... close resumed>) = 0 [pid 666] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 664] ioctl(4, LOOP_CLR_FD [pid 666] close(4) = 0 [pid 664] <... ioctl resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 666] close(3 [pid 665] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 668 attached ./strace-static-x86_64: Process 667 attached [pid 666] <... close resumed>) = 0 [pid 665] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 666] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 665] close(4 [pid 666] <... futex resumed>) = 1 [pid 665] <... close resumed>) = 0 [pid 661] <... futex resumed>) = 0 [pid 666] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 665] close(3 [pid 664] ioctl(4, LOOP_SET_FD, 3 [pid 661] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 666] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 665] <... close resumed>) = 0 [pid 664] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 661] <... futex resumed>) = 0 [pid 666] chdir("./file0" [pid 665] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 664] close(4 [pid 661] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 666] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 665] <... futex resumed>) = 1 [pid 664] <... close resumed>) = 0 [pid 663] <... futex resumed>) = 0 [pid 666] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 665] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 664] close(3 [pid 666] <... futex resumed>) = 1 [pid 664] <... close resumed>) = 0 [pid 663] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 661] <... futex resumed>) = 0 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 668 [pid 666] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 664] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 661] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 666] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 665] <... futex resumed>) = 0 [pid 664] <... futex resumed>) = 1 [pid 663] <... futex resumed>) = 1 [pid 661] <... futex resumed>) = 0 [pid 666] creat("./bus", 000 [pid 665] chdir("./file0" [pid 664] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 661] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 666] <... creat resumed>) = 3 [pid 665] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 663] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 662] <... futex resumed>) = 0 [pid 666] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 665] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 666] <... futex resumed>) = 1 [pid 665] <... futex resumed>) = 0 [pid 661] <... futex resumed>) = 0 [pid 666] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 665] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 661] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 666] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 661] <... futex resumed>) = 0 [pid 666] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 661] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 668] set_robust_list(0x5555636e06a0, 24 [pid 666] <... openat resumed>) = 4 [pid 663] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 662] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 666] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 661] <... futex resumed>) = 0 [pid 668] <... set_robust_list resumed>) = 0 [pid 666] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 664] <... futex resumed>) = 0 [pid 663] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 662] <... futex resumed>) = 1 [pid 661] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 666] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 665] <... futex resumed>) = 0 [pid 664] chdir("./file0" [pid 663] <... futex resumed>) = 1 [pid 661] <... futex resumed>) = 0 [pid 662] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 666] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 665] creat("./bus", 000 [pid 664] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 663] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 661] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 668] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 666] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 665] <... creat resumed>) = 3 [pid 664] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 666] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 665] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 664] <... futex resumed>) = 1 [pid 662] <... futex resumed>) = 0 [pid 666] <... futex resumed>) = 1 [pid 665] <... futex resumed>) = 1 [pid 664] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 663] <... futex resumed>) = 0 [pid 662] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 661] <... futex resumed>) = 0 [pid 666] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 665] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 664] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 663] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 662] <... futex resumed>) = 0 [pid 661] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 666] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 665] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 664] creat("./bus", 000 [pid 663] <... futex resumed>) = 0 [pid 662] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 661] <... futex resumed>) = 0 [pid 668] <... prctl resumed>) = 0 [pid 666] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 665] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 664] <... creat resumed>) = 3 [pid 663] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 661] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 668] setpgid(0, 0 [pid 667] set_robust_list(0x5555636e06a0, 24 [pid 666] <... open resumed>) = 5 [pid 665] <... openat resumed>) = 4 [pid 664] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 666] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 665] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 664] <... futex resumed>) = 1 [pid 662] <... futex resumed>) = 0 [pid 668] <... setpgid resumed>) = 0 [pid 666] <... futex resumed>) = 1 [pid 665] <... futex resumed>) = 1 [pid 664] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 663] <... futex resumed>) = 0 [pid 662] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 661] <... futex resumed>) = 0 [pid 668] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 666] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 665] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 664] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 663] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 662] <... futex resumed>) = 0 [pid 661] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 666] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 665] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 664] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 663] <... futex resumed>) = 0 [pid 662] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 661] <... futex resumed>) = 0 [pid 668] <... openat resumed>) = 3 [pid 667] <... set_robust_list resumed>) = 0 [pid 666] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 665] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 664] <... openat resumed>) = 4 [pid 663] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 661] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 668] write(3, "1000", 4 [pid 666] <... mmap resumed>) = 0x20000000 [pid 664] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 666] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 664] <... futex resumed>) = 1 [pid 662] <... futex resumed>) = 0 [pid 666] <... futex resumed>) = 1 [pid 664] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 662] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 661] <... futex resumed>) = 0 [pid 666] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 664] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 662] <... futex resumed>) = 0 [pid 661] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 666] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 664] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 662] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 661] <... futex resumed>) = 0 [pid 668] <... write resumed>) = 4 [pid 667] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 666] memfd_create("syzkaller", 0 [pid 665] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 664] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 661] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 666] <... memfd_create resumed>) = 6 [pid 665] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 664] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 668] close(3 [pid 667] <... prctl resumed>) = 0 [pid 666] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 665] <... futex resumed>) = 1 [pid 664] <... futex resumed>) = 1 [pid 663] <... futex resumed>) = 0 [pid 662] <... futex resumed>) = 0 [pid 666] <... mmap resumed>) = 0x7fe6f03b1000 [pid 665] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 664] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 663] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 662] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 668] <... close resumed>) = 0 [pid 667] setpgid(0, 0 [pid 666] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 665] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) executing program [pid 664] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 663] <... futex resumed>) = 0 [pid 662] <... futex resumed>) = 0 [pid 668] write(1, "executing program\n", 18 [pid 667] <... setpgid resumed>) = 0 [pid 666] <... write resumed>) = 131072 [pid 665] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 664] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 663] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 662] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 668] <... write resumed>) = 18 [pid 667] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 666] munmap(0x7fe6f03b1000, 138412032 [pid 665] <... open resumed>) = 5 [pid 664] <... open resumed>) = 5 [pid 668] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 667] <... openat resumed>) = 3 [pid 666] <... munmap resumed>) = 0 [pid 665] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 664] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 668] <... futex resumed>) = 0 [pid 666] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 665] <... futex resumed>) = 1 [pid 664] <... futex resumed>) = 1 [pid 663] <... futex resumed>) = 0 [pid 662] <... futex resumed>) = 0 [pid 667] write(3, "1000", 4 [pid 668] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 666] <... openat resumed>) = 7 [pid 665] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 664] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 663] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 667] <... write resumed>) = 4 [pid 662] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 668] <... rt_sigaction resumed>NULL, 8) = 0 [pid 666] ioctl(7, LOOP_SET_FD, 6 [pid 665] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 664] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 663] <... futex resumed>) = 0 [pid 662] <... futex resumed>) = 0 [pid 667] close(3 [pid 668] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 666] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 665] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 664] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 663] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 662] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 668] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 667] <... close resumed>) = 0 [pid 666] ioctl(7, LOOP_CLR_FDexecuting program [pid 665] <... mmap resumed>) = 0x20000000 [pid 664] <... mmap resumed>) = 0x20000000 [pid 668] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 666] <... ioctl resumed>) = 0 [pid 665] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 664] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 668] <... mmap resumed>) = 0x7fe6f87b1000 [pid 667] write(1, "executing program\n", 18 [pid 665] <... futex resumed>) = 1 [pid 664] <... futex resumed>) = 1 [pid 663] <... futex resumed>) = 0 [pid 662] <... futex resumed>) = 0 [pid 668] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 665] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 664] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 663] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 662] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 668] <... mprotect resumed>) = 0 [pid 667] <... write resumed>) = 18 [pid 665] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 664] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 663] <... futex resumed>) = 0 [pid 662] <... futex resumed>) = 0 [pid 668] rt_sigprocmask(SIG_BLOCK, ~[], [pid 667] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 665] memfd_create("syzkaller", 0 [pid 664] memfd_create("syzkaller", 0 [pid 663] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 662] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 668] <... rt_sigprocmask resumed>[], 8) = 0 [pid 665] <... memfd_create resumed>) = 6 [pid 664] <... memfd_create resumed>) = 6 [pid 668] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 667] <... futex resumed>) = 0 [pid 665] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 664] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 665] <... mmap resumed>) = 0x7fe6f03b1000 [pid 664] <... mmap resumed>) = 0x7fe6f03b1000 [pid 667] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 665] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 664] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 668] <... clone3 resumed> => {parent_tid=[669]}, 88) = 669 [pid 667] <... rt_sigaction resumed>NULL, 8) = 0 [pid 666] ioctl(7, LOOP_SET_FD, 6 [pid 665] <... write resumed>) = 131072 [pid 664] <... write resumed>) = 131072 [pid 668] rt_sigprocmask(SIG_SETMASK, [], [pid 666] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 665] munmap(0x7fe6f03b1000, 138412032 [pid 664] munmap(0x7fe6f03b1000, 138412032 [pid 668] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 667] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 666] close(7 [pid 665] <... munmap resumed>) = 0 [pid 664] <... munmap resumed>) = 0 [pid 668] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 667] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 666] <... close resumed>) = 0 [pid 665] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 664] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 668] <... futex resumed>) = 0 [pid 667] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 666] close(6 [pid 665] <... openat resumed>) = 7 [pid 664] <... openat resumed>) = 7 [pid 668] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 667] <... mmap resumed>) = 0x7fe6f87b1000 [pid 666] <... close resumed>) = 0 [pid 665] ioctl(7, LOOP_SET_FD, 6 [pid 664] ioctl(7, LOOP_SET_FD, 6 [pid 667] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 666] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 665] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 664] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 667] <... mprotect resumed>) = 0 [pid 666] <... futex resumed>) = 1 [pid 665] ioctl(7, LOOP_CLR_FD [pid 664] ioctl(7, LOOP_CLR_FD [pid 661] <... futex resumed>) = 0 [pid 667] rt_sigprocmask(SIG_BLOCK, ~[], [pid 666] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 665] <... ioctl resumed>) = 0 [pid 664] <... ioctl resumed>) = 0 [pid 661] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 667] <... rt_sigprocmask resumed>[], 8) = 0 [pid 666] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 661] <... futex resumed>) = 0 [pid 667] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 666] mknod(0x20000000, 000 [pid 661] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 666] <... mknod resumed>) = -1 EEXIST (File exists) [pid 666] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 661] <... futex resumed>) = 0 [pid 667] <... clone3 resumed> => {parent_tid=[670]}, 88) = 670 [pid 666] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 661] exit_group(0 [pid 667] rt_sigprocmask(SIG_SETMASK, [], [pid 666] <... futex resumed>) = ? [pid 661] <... exit_group resumed>) = ? [pid 667] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 666] +++ exited with 0 +++ [pid 661] +++ exited with 0 +++ [pid 667] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 665] ioctl(7, LOOP_SET_FD, 6 [pid 664] ioctl(7, LOOP_SET_FD, 6 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=661, si_uid=0, si_status=0, si_utime=1, si_stime=0} --- [pid 667] <... futex resumed>) = 0 [pid 665] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 664] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 667] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 665] close(7 [pid 664] close(7./strace-static-x86_64: Process 669 attached [pid 665] <... close resumed>) = 0 [pid 664] <... close resumed>) = 0 [pid 665] close(6 [pid 664] close(6 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 669] set_robust_list(0x7fe6f87d19a0, 24 [pid 665] <... close resumed>) = 0 [pid 664] <... close resumed>) = 0 [pid 665] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 664] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... openat resumed>) = 3 [pid 669] <... set_robust_list resumed>) = 0 [pid 665] <... futex resumed>) = 1 [pid 664] <... futex resumed>) = 1 [pid 663] <... futex resumed>) = 0 [pid 662] <... futex resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 665] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 664] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 663] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 662] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 669] rt_sigprocmask(SIG_SETMASK, [], [pid 665] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 664] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 663] <... futex resumed>) = 0 [pid 662] <... futex resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 665] mknod(0x20000000, 000 [pid 664] mknod(0x20000000, 000 [pid 663] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 662] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] close(3 [pid 669] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 665] <... mknod resumed>) = -1 EEXIST (File exists) [pid 669] memfd_create("syzkaller", 0 [pid 664] <... mknod resumed>) = -1 EEXIST (File exists) [pid 305] <... close resumed>) = 0 [pid 665] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 664] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 669] <... memfd_create resumed>) = 3 [pid 665] <... futex resumed>) = 1 [pid 664] <... futex resumed>) = 1 [pid 663] <... futex resumed>) = 0 [pid 662] <... futex resumed>) = 0 ./strace-static-x86_64: Process 670 attached [pid 665] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 664] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 663] exit_group(0 [pid 662] exit_group(0 [pid 670] set_robust_list(0x7fe6f87d19a0, 24 [pid 665] <... futex resumed>) = ? [pid 664] <... futex resumed>) = ? [pid 663] <... exit_group resumed>) = ? [pid 662] <... exit_group resumed>) = ? [pid 669] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 670] <... set_robust_list resumed>) = 0 [pid 665] +++ exited with 0 +++ [pid 664] +++ exited with 0 +++ [pid 669] <... mmap resumed>) = 0x7fe6f03b1000 [pid 663] +++ exited with 0 +++ [pid 662] +++ exited with 0 +++ [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 671 ./strace-static-x86_64: Process 671 attached [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=663, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=662, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 670] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 670] memfd_create("syzkaller", 0) = 3 [pid 670] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 670] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 669] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 670] <... write resumed>) = 262144 [pid 671] set_robust_list(0x5555636e06a0, 24) = 0 [pid 671] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 669] <... write resumed>) = 262144 [pid 671] <... prctl resumed>) = 0 [pid 671] setpgid(0, 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 671] <... setpgid resumed>) = 0 [pid 671] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 670] munmap(0x7fe6f03b1000, 138412032 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 304] <... openat resumed>) = 3 [pid 303] <... openat resumed>) = 3 [pid 670] <... munmap resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 303] ioctl(3, LOOP_CLR_FD [pid 304] <... ioctl resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 304] close(3 [pid 303] close(3 [pid 669] munmap(0x7fe6f03b1000, 138412032 [pid 304] <... close resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 671] <... openat resumed>) = 3 [pid 670] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 671] write(3, "1000", 4 [pid 670] <... openat resumed>) = 4 [pid 671] <... write resumed>) = 4 [pid 671] close(3) = 0 [pid 670] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 671] write(1, "executing program\n", 18 [pid 670] ioctl(4, LOOP_CLR_FD [pid 671] <... write resumed>) = 18 executing program [pid 670] <... ioctl resumed>) = 0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 672 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 673 [pid 671] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 671] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 671] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 671] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 669] <... munmap resumed>) = 0 [pid 671] <... mmap resumed>) = 0x7fe6f87b1000 [pid 671] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 671] rt_sigprocmask(SIG_BLOCK, ~[], [pid 669] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 671] <... rt_sigprocmask resumed>[], 8) = 0 [pid 671] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[674]}, 88) = 674 [pid 671] rt_sigprocmask(SIG_SETMASK, [], [pid 670] ioctl(4, LOOP_SET_FD, 3 [pid 671] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 670] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 671] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 670] close(4./strace-static-x86_64: Process 674 attached ./strace-static-x86_64: Process 673 attached ./strace-static-x86_64: Process 672 attached [pid 671] <... futex resumed>) = 0 [pid 670] <... close resumed>) = 0 [pid 669] <... openat resumed>) = 4 [pid 674] set_robust_list(0x7fe6f87d19a0, 24 [pid 673] set_robust_list(0x5555636e06a0, 24 [pid 672] set_robust_list(0x5555636e06a0, 24 [pid 670] close(3 [pid 673] <... set_robust_list resumed>) = 0 [pid 669] ioctl(4, LOOP_SET_FD, 3 [pid 674] <... set_robust_list resumed>) = 0 [pid 673] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 672] <... set_robust_list resumed>) = 0 [pid 671] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 670] <... close resumed>) = 0 [pid 669] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 670] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 667] <... futex resumed>) = 0 [pid 670] chdir("./file0" [pid 667] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 670] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 667] <... futex resumed>) = 0 [pid 670] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 667] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 670] <... futex resumed>) = 0 [pid 667] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 670] creat("./bus", 000 [pid 667] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 670] <... creat resumed>) = 3 [pid 667] <... futex resumed>) = 0 [pid 670] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 667] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 670] <... futex resumed>) = 0 [pid 667] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 670] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 667] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 670] <... openat resumed>) = 4 [pid 667] <... futex resumed>) = 0 [pid 670] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 667] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 670] <... futex resumed>) = 0 [pid 667] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 670] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 667] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 667] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 673] <... prctl resumed>) = 0 [pid 672] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 670] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 669] ioctl(4, LOOP_CLR_FD [pid 670] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 667] <... futex resumed>) = 0 [pid 670] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 667] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 670] <... open resumed>) = 5 [pid 667] <... futex resumed>) = 0 [pid 670] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 667] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 670] <... futex resumed>) = 0 [pid 667] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 670] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 667] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 673] setpgid(0, 0 [pid 670] <... mmap resumed>) = 0x20000000 [pid 669] <... ioctl resumed>) = 0 [pid 667] <... futex resumed>) = 0 [pid 670] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 667] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 670] <... futex resumed>) = 0 [pid 667] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 670] memfd_create("syzkaller", 0 [pid 667] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 670] <... memfd_create resumed>) = 6 [pid 667] <... futex resumed>) = 0 [pid 670] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 667] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 670] <... mmap resumed>) = 0x7fe6f03b1000 [pid 673] <... setpgid resumed>) = 0 [pid 672] <... prctl resumed>) = 0 [pid 670] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 674] rt_sigprocmask(SIG_SETMASK, [], [pid 673] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 672] setpgid(0, 0 [pid 670] <... write resumed>) = 131072 [pid 670] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 670] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 673] <... openat resumed>) = 3 [pid 672] <... setpgid resumed>) = 0 [pid 670] <... openat resumed>) = 7 [pid 670] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 670] ioctl(7, LOOP_CLR_FD [pid 673] write(3, "1000", 4 [pid 670] <... ioctl resumed>) = 0 [pid 672] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 673] <... write resumed>) = 4 [pid 669] ioctl(4, LOOP_SET_FD, 3 [pid 674] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 674] memfd_create("syzkaller", 0 [pid 669] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 673] close(3 [pid 672] <... openat resumed>) = 3 [pid 674] <... memfd_create resumed>) = 3 [pid 674] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 673] <... close resumed>) = 0 [pid 672] write(3, "1000", 4 [pid 669] close(4 executing program [pid 673] write(1, "executing program\n", 18 [pid 672] <... write resumed>) = 4 [pid 669] <... close resumed>) = 0 [pid 673] <... write resumed>) = 18 [pid 672] close(3 [pid 669] close(3 [pid 674] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 673] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 672] <... close resumed>) = 0 [pid 669] <... close resumed>) = 0 [pid 673] <... futex resumed>) = 0 [pid 672] write(1, "executing program\n", 18executing program [pid 669] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 673] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 672] <... write resumed>) = 18 [pid 669] <... futex resumed>) = 1 [pid 668] <... futex resumed>) = 0 [pid 673] <... rt_sigaction resumed>NULL, 8) = 0 [pid 672] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 674] <... write resumed>) = 262144 [pid 669] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 668] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 673] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 672] <... futex resumed>) = 0 [pid 669] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 668] <... futex resumed>) = 0 [pid 673] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 672] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 669] chdir("./file0" [pid 668] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 673] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 672] <... rt_sigaction resumed>NULL, 8) = 0 [pid 669] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 673] <... mmap resumed>) = 0x7fe6f87b1000 [pid 672] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 669] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 674] munmap(0x7fe6f03b1000, 138412032 [pid 670] ioctl(7, LOOP_SET_FD, 6 [pid 673] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 672] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 669] <... futex resumed>) = 1 [pid 668] <... futex resumed>) = 0 [pid 673] <... mprotect resumed>) = 0 [pid 672] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 669] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 668] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 674] <... munmap resumed>) = 0 [pid 673] rt_sigprocmask(SIG_BLOCK, ~[], [pid 672] <... mmap resumed>) = 0x7fe6f87b1000 [pid 670] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 669] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 668] <... futex resumed>) = 0 [pid 674] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 673] <... rt_sigprocmask resumed>[], 8) = 0 [pid 672] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 670] close(7 [pid 669] creat("./bus", 000 [pid 668] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 674] <... openat resumed>) = 4 [pid 673] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 672] <... mprotect resumed>) = 0 [pid 670] <... close resumed>) = 0 [pid 674] ioctl(4, LOOP_SET_FD, 3 [pid 670] close(6 [pid 674] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 670] <... close resumed>) = 0 [pid 674] ioctl(4, LOOP_CLR_FD [pid 670] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 674] <... ioctl resumed>) = 0 [pid 670] <... futex resumed>) = 1 [pid 667] <... futex resumed>) = 0 [pid 670] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 667] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 670] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 667] <... futex resumed>) = 0 [pid 670] mknod(0x20000000, 000 [pid 667] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 670] <... mknod resumed>) = -1 EEXIST (File exists) [pid 670] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 667] <... futex resumed>) = 0 [pid 670] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 667] exit_group(0 [pid 670] <... futex resumed>) = ? [pid 667] <... exit_group resumed>) = ? [pid 670] +++ exited with 0 +++ [pid 667] +++ exited with 0 +++ [pid 674] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 674] close(4) = 0 [pid 674] close(3) = 0 [pid 674] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=667, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 674] <... futex resumed>) = 1 [pid 671] <... futex resumed>) = 0 [pid 674] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 672] rt_sigprocmask(SIG_BLOCK, ~[], [pid 671] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 669] <... creat resumed>) = 3 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 674] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 673] <... clone3 resumed> => {parent_tid=[675]}, 88) = 675 [pid 672] <... rt_sigprocmask resumed>[], 8) = 0 [pid 671] <... futex resumed>) = 0 [pid 669] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 674] chdir("./file0" [pid 673] rt_sigprocmask(SIG_SETMASK, [], [pid 672] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 671] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... openat resumed>) = 3 [pid 669] <... futex resumed>) = 1 [pid 674] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 673] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 668] <... futex resumed>) = 0 [pid 674] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 668] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] ioctl(3, LOOP_CLR_FD [pid 669] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 674] <... futex resumed>) = 1 [pid 673] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 672] <... clone3 resumed> => {parent_tid=[676]}, 88) = 676 [pid 671] <... futex resumed>) = 0 [pid 668] <... futex resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 674] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 672] rt_sigprocmask(SIG_SETMASK, [], [pid 671] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 673] <... futex resumed>) = 0 [pid 669] <... openat resumed>) = 4 [pid 668] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] close(3 [pid 674] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 673] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 672] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 671] <... futex resumed>) = 0 [pid 669] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 668] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ./strace-static-x86_64: Process 676 attached ./strace-static-x86_64: Process 675 attached [pid 674] creat("./bus", 000 [pid 672] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 671] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 669] <... futex resumed>) = 0 [pid 668] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... close resumed>) = 0 [pid 676] set_robust_list(0x7fe6f87d19a0, 24 [pid 675] set_robust_list(0x7fe6f87d19a0, 24 [pid 674] <... creat resumed>) = 3 [pid 672] <... futex resumed>) = 0 [pid 669] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 668] <... futex resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 676] <... set_robust_list resumed>) = 0 [pid 675] <... set_robust_list resumed>) = 0 [pid 674] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 672] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 669] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 674] <... futex resumed>) = 1 [pid 671] <... futex resumed>) = 0 [pid 674] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 671] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 674] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 671] <... futex resumed>) = 0 [pid 674] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 671] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 674] <... openat resumed>) = 4 [pid 674] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 671] <... futex resumed>) = 0 [pid 676] rt_sigprocmask(SIG_SETMASK, [], [pid 675] rt_sigprocmask(SIG_SETMASK, [], [pid 674] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 671] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 669] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 668] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 676] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 675] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 674] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 671] <... futex resumed>) = 0 [pid 669] <... futex resumed>) = 0 [pid 668] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 676] memfd_create("syzkaller", 0 [pid 675] memfd_create("syzkaller", 0 [pid 674] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 671] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 669] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 668] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 677 ./strace-static-x86_64: Process 677 attached [pid 676] <... memfd_create resumed>) = 3 [pid 675] <... memfd_create resumed>) = 3 [pid 674] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 669] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 668] <... futex resumed>) = 0 [pid 676] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 675] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 674] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 669] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 668] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 676] <... mmap resumed>) = 0x7fe6f03b1000 [pid 675] <... mmap resumed>) = 0x7fe6f03b1000 [pid 674] <... futex resumed>) = 1 [pid 671] <... futex resumed>) = 0 [pid 669] <... open resumed>) = 5 [pid 677] set_robust_list(0x5555636e06a0, 24 [pid 674] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 671] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 669] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 677] <... set_robust_list resumed>) = 0 [pid 674] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 671] <... futex resumed>) = 0 [pid 677] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 674] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 671] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 669] <... futex resumed>) = 1 [pid 668] <... futex resumed>) = 0 [pid 677] <... prctl resumed>) = 0 [pid 675] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 674] <... open resumed>) = 5 [pid 669] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 668] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 677] setpgid(0, 0 [pid 674] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 669] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 668] <... futex resumed>) = 0 [pid 677] <... setpgid resumed>) = 0 [pid 674] <... futex resumed>) = 1 [pid 671] <... futex resumed>) = 0 [pid 669] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 668] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 677] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 674] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 671] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 677] <... openat resumed>) = 3 [pid 674] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 671] <... futex resumed>) = 0 [pid 669] <... mmap resumed>) = 0x20000000 [pid 677] write(3, "1000", 4 [pid 675] <... write resumed>) = 262144 [pid 674] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 671] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 669] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 677] <... write resumed>) = 4 [pid 676] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 675] munmap(0x7fe6f03b1000, 138412032 [pid 674] <... mmap resumed>) = 0x20000000 [pid 669] <... futex resumed>) = 1 [pid 668] <... futex resumed>) = 0 [pid 677] close(3 [pid 675] <... munmap resumed>) = 0 [pid 674] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 669] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 668] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 677] <... close resumed>) = 0 [pid 675] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 674] <... futex resumed>) = 1 executing program [pid 671] <... futex resumed>) = 0 [pid 669] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 668] <... futex resumed>) = 0 [pid 677] write(1, "executing program\n", 18 [pid 674] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 671] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 677] <... write resumed>) = 18 [pid 676] <... write resumed>) = 262144 [pid 675] <... openat resumed>) = 4 [pid 674] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 671] <... futex resumed>) = 0 [pid 669] memfd_create("syzkaller", 0 [pid 668] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 676] munmap(0x7fe6f03b1000, 138412032 [pid 675] ioctl(4, LOOP_SET_FD, 3 [pid 669] <... memfd_create resumed>) = 6 [pid 677] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 676] <... munmap resumed>) = 0 [pid 675] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 674] memfd_create("syzkaller", 0 [pid 671] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 669] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 677] <... futex resumed>) = 0 [pid 676] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 675] ioctl(4, LOOP_CLR_FD [pid 674] <... memfd_create resumed>) = 6 [pid 669] <... mmap resumed>) = 0x7fe6f03b1000 [pid 677] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 674] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 677] <... rt_sigaction resumed>NULL, 8) = 0 [pid 674] <... mmap resumed>) = 0x7fe6f03b1000 [pid 676] <... openat resumed>) = 4 [pid 675] <... ioctl resumed>) = 0 [pid 669] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 677] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 676] ioctl(4, LOOP_SET_FD, 3 [pid 674] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 669] <... write resumed>) = 131072 [pid 676] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 669] munmap(0x7fe6f03b1000, 138412032 [pid 676] ioctl(4, LOOP_CLR_FD [pid 669] <... munmap resumed>) = 0 [pid 676] <... ioctl resumed>) = 0 [pid 669] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 677] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 674] <... write resumed>) = 131072 [pid 669] ioctl(7, LOOP_SET_FD, 6 [pid 674] munmap(0x7fe6f03b1000, 138412032 [pid 677] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 669] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 669] ioctl(7, LOOP_CLR_FD) = 0 [pid 677] <... mmap resumed>) = 0x7fe6f87b1000 [pid 674] <... munmap resumed>) = 0 [pid 677] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 674] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 677] <... mprotect resumed>) = 0 [pid 674] <... openat resumed>) = 7 [pid 677] rt_sigprocmask(SIG_BLOCK, ~[], [pid 674] ioctl(7, LOOP_SET_FD, 6 [pid 677] <... rt_sigprocmask resumed>[], 8) = 0 [pid 674] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 677] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 674] ioctl(7, LOOP_CLR_FD [pid 675] ioctl(4, LOOP_SET_FD, 3 [pid 674] <... ioctl resumed>) = 0 [pid 677] <... clone3 resumed> => {parent_tid=[678]}, 88) = 678 [pid 675] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 677] rt_sigprocmask(SIG_SETMASK, [], [pid 676] ioctl(4, LOOP_SET_FD, 3 [pid 675] close(4 [pid 677] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 669] ioctl(7, LOOP_SET_FD, 6./strace-static-x86_64: Process 678 attached [pid 676] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 675] <... close resumed>) = 0 [pid 669] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 678] set_robust_list(0x7fe6f87d19a0, 24 [pid 676] close(4 [pid 675] close(3 [pid 669] close(7 [pid 678] <... set_robust_list resumed>) = 0 [pid 676] <... close resumed>) = 0 [pid 675] <... close resumed>) = 0 [pid 669] <... close resumed>) = 0 [pid 678] rt_sigprocmask(SIG_SETMASK, [], [pid 676] close(3 [pid 675] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 669] close(6 [pid 678] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 676] <... close resumed>) = 0 [pid 675] <... futex resumed>) = 1 [pid 673] <... futex resumed>) = 0 [pid 669] <... close resumed>) = 0 [pid 678] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 676] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 675] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 673] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 669] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 676] <... futex resumed>) = 1 [pid 675] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 673] <... futex resumed>) = 0 [pid 672] <... futex resumed>) = 0 [pid 669] <... futex resumed>) = 1 [pid 668] <... futex resumed>) = 0 [pid 676] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 675] chdir("./file0" [pid 673] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 672] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 669] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 668] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 676] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 675] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 672] <... futex resumed>) = 0 [pid 669] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 668] <... futex resumed>) = 0 [pid 677] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 676] chdir("./file0" [pid 675] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 674] ioctl(7, LOOP_SET_FD, 6 [pid 672] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 669] mknod(0x20000000, 000 [pid 668] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 678] <... futex resumed>) = 0 [pid 677] <... futex resumed>) = 1 [pid 676] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 675] <... futex resumed>) = 1 [pid 674] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 673] <... futex resumed>) = 0 [pid 669] <... mknod resumed>) = -1 EEXIST (File exists) [pid 678] memfd_create("syzkaller", 0 [pid 677] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 676] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 675] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 674] close(7 [pid 673] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 669] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 678] <... memfd_create resumed>) = 3 [pid 676] <... futex resumed>) = 1 [pid 675] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 674] <... close resumed>) = 0 [pid 673] <... futex resumed>) = 0 [pid 672] <... futex resumed>) = 0 [pid 669] <... futex resumed>) = 1 [pid 668] <... futex resumed>) = 0 [pid 678] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 676] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 675] creat("./bus", 000 [pid 674] close(6 [pid 673] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 672] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 669] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 668] exit_group(0 [pid 678] <... mmap resumed>) = 0x7fe6f03b1000 [pid 676] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 675] <... creat resumed>) = 3 [pid 672] <... futex resumed>) = 0 [pid 669] <... futex resumed>) = ? [pid 668] <... exit_group resumed>) = ? [pid 674] <... close resumed>) = 0 [pid 678] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 676] creat("./bus", 000 [pid 675] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 674] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 672] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 669] +++ exited with 0 +++ [pid 668] +++ exited with 0 +++ [pid 678] <... write resumed>) = 262144 [pid 676] <... creat resumed>) = 3 [pid 675] <... futex resumed>) = 1 [pid 674] <... futex resumed>) = 1 [pid 673] <... futex resumed>) = 0 [pid 671] <... futex resumed>) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=668, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 678] munmap(0x7fe6f03b1000, 138412032 [pid 676] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 675] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 674] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 673] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 671] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 678] <... munmap resumed>) = 0 [pid 676] <... futex resumed>) = 1 [pid 675] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 674] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 673] <... futex resumed>) = 0 [pid 672] <... futex resumed>) = 0 [pid 671] <... futex resumed>) = 0 [pid 678] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 676] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 675] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 674] mknod(0x20000000, 000 [pid 673] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 672] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 671] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 678] <... openat resumed>) = 4 [pid 676] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 675] <... openat resumed>) = 4 [pid 674] <... mknod resumed>) = -1 EEXIST (File exists) [pid 672] <... futex resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 678] ioctl(4, LOOP_SET_FD, 3 [pid 676] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 675] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 674] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 672] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] ioctl(3, LOOP_CLR_FD [pid 678] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 676] <... openat resumed>) = 4 [pid 675] <... futex resumed>) = 1 [pid 674] <... futex resumed>) = 1 [pid 673] <... futex resumed>) = 0 [pid 671] <... futex resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 678] ioctl(4, LOOP_CLR_FD [pid 676] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 675] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 674] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 673] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 671] exit_group(0 [pid 302] close(3 [pid 678] <... ioctl resumed>) = 0 [pid 676] <... futex resumed>) = 1 [pid 675] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 674] <... futex resumed>) = ? [pid 673] <... futex resumed>) = 0 [pid 672] <... futex resumed>) = 0 [pid 671] <... exit_group resumed>) = ? [pid 302] <... close resumed>) = 0 [pid 676] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 675] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 674] +++ exited with 0 +++ [pid 673] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 672] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 676] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 675] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 672] <... futex resumed>) = 0 [pid 671] +++ exited with 0 +++ [pid 676] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 675] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 672] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=671, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 679 [pid 678] ioctl(4, LOOP_SET_FD, 3 [pid 676] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 675] <... futex resumed>) = 1 [pid 673] <... futex resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 678] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 676] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 675] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 673] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 678] close(4 [pid 676] <... futex resumed>) = 1 [pid 675] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 673] <... futex resumed>) = 0 [pid 672] <... futex resumed>) = 0 [pid 678] <... close resumed>) = 0 [pid 676] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 675] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 673] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 672] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 678] close(3 [pid 676] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 675] <... open resumed>) = 5 [pid 672] <... futex resumed>) = 0 [pid 678] <... close resumed>) = 0 [pid 676] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 675] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 672] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 678] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 676] <... open resumed>) = 5 [pid 675] <... futex resumed>) = 1 [pid 673] <... futex resumed>) = 0 [pid 678] <... futex resumed>) = 1 [pid 677] <... futex resumed>) = 0 [pid 676] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 675] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 673] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 678] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 677] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 676] <... futex resumed>) = 1 [pid 675] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 673] <... futex resumed>) = 0 [pid 672] <... futex resumed>) = 0 [pid 678] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 677] <... futex resumed>) = 0 [pid 676] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 675] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 673] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 672] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 678] chdir("./file0" [pid 677] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 676] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 675] <... mmap resumed>) = 0x20000000 [pid 672] <... futex resumed>) = 0 [pid 678] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 676] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 675] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 672] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 678] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 676] <... mmap resumed>) = 0x20000000 [pid 675] <... futex resumed>) = 1 [pid 673] <... futex resumed>) = 0 [pid 678] <... futex resumed>) = 1 [pid 677] <... futex resumed>) = 0 [pid 676] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 675] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 673] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 678] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 677] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 676] <... futex resumed>) = 1 [pid 675] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 673] <... futex resumed>) = 0 [pid 672] <... futex resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 678] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 677] <... futex resumed>) = 0 [pid 676] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 675] memfd_create("syzkaller", 0 [pid 673] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 672] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 679 attached [pid 678] creat("./bus", 000 [pid 677] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 676] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 675] <... memfd_create resumed>) = 6 [pid 672] <... futex resumed>) = 0 [pid 679] set_robust_list(0x5555636e06a0, 24 [pid 678] <... creat resumed>) = 3 [pid 676] memfd_create("syzkaller", 0 [pid 675] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 672] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 678] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 676] <... memfd_create resumed>) = 6 [pid 675] <... mmap resumed>) = 0x7fe6f03b1000 [pid 305] <... openat resumed>) = 3 [pid 679] <... set_robust_list resumed>) = 0 [pid 678] <... futex resumed>) = 1 [pid 677] <... futex resumed>) = 0 [pid 676] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 675] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 305] ioctl(3, LOOP_CLR_FD [pid 678] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 676] <... mmap resumed>) = 0x7fe6f03b1000 [pid 675] <... write resumed>) = 131072 [pid 305] <... ioctl resumed>) = 0 [pid 677] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 676] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 675] munmap(0x7fe6f03b1000, 138412032 [pid 305] close(3 [pid 678] <... futex resumed>) = 0 [pid 677] <... futex resumed>) = 1 [pid 676] <... write resumed>) = 131072 [pid 675] <... munmap resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 679] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 678] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 677] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 676] munmap(0x7fe6f03b1000, 138412032 [pid 675] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 679] <... prctl resumed>) = 0 [pid 678] <... openat resumed>) = 4 [pid 676] <... munmap resumed>) = 0 [pid 675] <... openat resumed>) = 7 [pid 679] setpgid(0, 0 [pid 678] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 676] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 675] ioctl(7, LOOP_SET_FD, 6 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 680 [pid 679] <... setpgid resumed>) = 0 [pid 678] <... futex resumed>) = 1 [pid 677] <... futex resumed>) = 0 [pid 676] <... openat resumed>) = 7 [pid 675] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 679] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 678] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 677] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 676] ioctl(7, LOOP_SET_FD, 6 [pid 675] ioctl(7, LOOP_CLR_FD [pid 679] <... openat resumed>) = 3 [pid 678] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 677] <... futex resumed>) = 0 [pid 676] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 675] <... ioctl resumed>) = 0 [pid 679] write(3, "1000", 4 [pid 678] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 677] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 676] ioctl(7, LOOP_CLR_FD [pid 679] <... write resumed>) = 4 [pid 678] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 676] <... ioctl resumed>) = 0 [pid 679] close(3 [pid 678] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 679] <... close resumed>) = 0 [pid 678] <... futex resumed>) = 1 [pid 677] <... futex resumed>) = 0 [pid 679] write(1, "executing program\n", 18 [pid 678] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 677] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 679] <... write resumed>) = 18 [pid 678] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 677] <... futex resumed>) = 0 [pid 679] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 678] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 677] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 676] ioctl(7, LOOP_SET_FD, 6 [pid 675] ioctl(7, LOOP_SET_FD, 6 [pid 679] <... futex resumed>) = 0 [pid 678] <... open resumed>) = 5 [pid 676] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 675] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 679] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 678] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 676] close(7 [pid 675] close(7 [pid 679] <... rt_sigaction resumed>NULL, 8) = 0 [pid 678] <... futex resumed>) = 1 [pid 677] <... futex resumed>) = 0 [pid 676] <... close resumed>) = 0 [pid 675] <... close resumed>) = 0 [pid 679] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 678] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 677] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 676] close(6 [pid 675] close(6 [pid 679] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 678] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 677] <... futex resumed>) = 0 [pid 676] <... close resumed>) = 0 [pid 675] <... close resumed>) = 0 [pid 679] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 678] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 677] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 676] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 675] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 679] <... mmap resumed>) = 0x7fe6f87b1000 [pid 678] <... mmap resumed>) = 0x20000000 [pid 676] <... futex resumed>) = 1 [pid 675] <... futex resumed>) = 1 [pid 673] <... futex resumed>) = 0 executing program [pid 672] <... futex resumed>) = 0 ./strace-static-x86_64: Process 680 attached [pid 679] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 678] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 676] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 675] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 673] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 672] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 680] set_robust_list(0x5555636e06a0, 24 [pid 679] <... mprotect resumed>) = 0 [pid 678] <... futex resumed>) = 1 [pid 677] <... futex resumed>) = 0 [pid 676] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 675] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 673] <... futex resumed>) = 0 [pid 672] <... futex resumed>) = 0 [pid 680] <... set_robust_list resumed>) = 0 [pid 679] rt_sigprocmask(SIG_BLOCK, ~[], [pid 678] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 677] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 676] mknod(0x20000000, 000 [pid 675] mknod(0x20000000, 000 [pid 673] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 672] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 680] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 679] <... rt_sigprocmask resumed>[], 8) = 0 [pid 678] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 677] <... futex resumed>) = 0 [pid 676] <... mknod resumed>) = -1 EEXIST (File exists) [pid 675] <... mknod resumed>) = -1 EEXIST (File exists) [pid 680] <... prctl resumed>) = 0 [pid 679] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 678] memfd_create("syzkaller", 0 [pid 677] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 676] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 675] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 680] setpgid(0, 0 [pid 678] <... memfd_create resumed>) = 6 [pid 676] <... futex resumed>) = 1 [pid 675] <... futex resumed>) = 1 [pid 673] <... futex resumed>) = 0 [pid 672] <... futex resumed>) = 0 [pid 680] <... setpgid resumed>) = 0 [pid 679] <... clone3 resumed> => {parent_tid=[681]}, 88) = 681 [pid 678] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 676] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 675] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 673] exit_group(0 [pid 680] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 679] rt_sigprocmask(SIG_SETMASK, [], [pid 678] <... mmap resumed>) = 0x7fe6f03b1000 [pid 672] exit_group(0 [pid 673] <... exit_group resumed>) = ? [pid 675] <... futex resumed>) = 231 [pid 680] <... openat resumed>) = 3 [pid 679] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 680] write(3, "1000", 4 [pid 679] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 680] <... write resumed>) = 4 [pid 679] <... futex resumed>) = 0 [pid 680] close(3 [pid 679] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 680] <... close resumed>) = 0 [pid 680] write(1, "executing program\n", 18) = 18 [pid 680] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 680] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 680] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 680] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 680] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 680] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 680] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 678] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 672] <... exit_group resumed>) = ? [pid 676] <... futex resumed>) = ? [pid 680] <... clone3 resumed> => {parent_tid=[682]}, 88) = 682 [pid 680] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 680] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 680] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 682 attached ./strace-static-x86_64: Process 681 attached [pid 678] <... write resumed>) = 131072 [pid 676] +++ exited with 0 +++ [pid 675] +++ exited with 0 +++ [pid 673] +++ exited with 0 +++ [pid 672] +++ exited with 0 +++ [pid 682] set_robust_list(0x7fe6f87d19a0, 24 [pid 681] set_robust_list(0x7fe6f87d19a0, 24 [pid 678] munmap(0x7fe6f03b1000, 138412032 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=672, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=673, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 682] <... set_robust_list resumed>) = 0 [pid 681] <... set_robust_list resumed>) = 0 [pid 678] <... munmap resumed>) = 0 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 682] rt_sigprocmask(SIG_SETMASK, [], [pid 681] rt_sigprocmask(SIG_SETMASK, [], [pid 678] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 304] <... restart_syscall resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 682] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 681] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 678] <... openat resumed>) = 7 [pid 682] memfd_create("syzkaller", 0 [pid 681] memfd_create("syzkaller", 0 [pid 678] ioctl(7, LOOP_SET_FD, 6 [pid 682] <... memfd_create resumed>) = 3 [pid 681] <... memfd_create resumed>) = 3 [pid 678] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 682] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 681] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 678] ioctl(7, LOOP_CLR_FD [pid 304] <... openat resumed>) = 3 [pid 303] <... openat resumed>) = 3 [pid 682] <... mmap resumed>) = 0x7fe6f03b1000 [pid 681] <... mmap resumed>) = 0x7fe6f03b1000 [pid 678] <... ioctl resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 303] ioctl(3, LOOP_CLR_FD [pid 682] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 681] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 304] <... ioctl resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 681] <... write resumed>) = 262144 [pid 304] close(3 [pid 303] close(3 [pid 678] ioctl(7, LOOP_SET_FD, 6 [pid 304] <... close resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 681] munmap(0x7fe6f03b1000, 138412032 [pid 678] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 682] <... write resumed>) = 262144 [pid 681] <... munmap resumed>) = 0 [pid 678] close(7./strace-static-x86_64: Process 683 attached [pid 681] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 678] <... close resumed>) = 0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 683 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 684 [pid 681] <... openat resumed>) = 4 [pid 678] close(6 [pid 681] ioctl(4, LOOP_SET_FD, 3 [pid 678] <... close resumed>) = 0 [pid 681] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 678] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 681] ioctl(4, LOOP_CLR_FD [pid 678] <... futex resumed>) = 1 [pid 677] <... futex resumed>) = 0 [pid 681] <... ioctl resumed>) = 0 [pid 678] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 677] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 678] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 677] <... futex resumed>) = 0 [pid 678] mknod(0x20000000, 000 [pid 677] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 682] munmap(0x7fe6f03b1000, 138412032 [pid 678] <... mknod resumed>) = -1 EEXIST (File exists) [pid 682] <... munmap resumed>) = 0 [pid 678] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 677] <... futex resumed>) = 0 [pid 682] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 678] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 677] exit_group(0 [pid 682] <... openat resumed>) = 4 [pid 678] <... futex resumed>) = ? [pid 677] <... exit_group resumed>) = ? [pid 682] ioctl(4, LOOP_SET_FD, 3 [pid 678] +++ exited with 0 +++ [pid 677] +++ exited with 0 +++ [pid 683] set_robust_list(0x5555636e06a0, 24 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=677, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 683] <... set_robust_list resumed>) = 0 [pid 682] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 681] ioctl(4, LOOP_SET_FD, 3 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 683] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 682] ioctl(4, LOOP_CLR_FD [pid 681] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 682] <... ioctl resumed>) = 0 [pid 681] close(4) = 0 [pid 681] close(3 [pid 683] <... prctl resumed>) = 0 [pid 681] <... close resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 683] setpgid(0, 0 [pid 681] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 683] <... setpgid resumed>) = 0 [pid 681] <... futex resumed>) = 1 [pid 679] <... futex resumed>) = 0 [pid 683] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 681] chdir("./file0" [pid 679] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWRexecuting program [pid 682] ioctl(4, LOOP_SET_FD, 3 [pid 681] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 683] <... openat resumed>) = 3 [pid 679] <... futex resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 683] write(3, "1000", 4 [pid 679] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] ioctl(3, LOOP_CLR_FD [pid 683] <... write resumed>) = 4 [pid 306] <... ioctl resumed>) = 0 [pid 683] close(3 [pid 306] close(3 [pid 683] <... close resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 683] write(1, "executing program\n", 18 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 683] <... write resumed>) = 18 [pid 682] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 681] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 684 attached [pid 682] close(4 [pid 681] <... futex resumed>) = 1 [pid 684] set_robust_list(0x5555636e06a0, 24 [pid 683] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 682] <... close resumed>) = 0 [pid 681] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 679] <... futex resumed>) = 0 [pid 684] <... set_robust_list resumed>) = 0 [pid 683] <... futex resumed>) = 0 [pid 682] close(3 [pid 684] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 683] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 682] <... close resumed>) = 0 [pid 679] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 685 [pid 684] <... prctl resumed>) = 0 [pid 683] <... rt_sigaction resumed>NULL, 8) = 0 [pid 682] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 681] <... futex resumed>) = 0 [pid 679] <... futex resumed>) = 1 [pid 684] setpgid(0, 0 [pid 683] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 682] <... futex resumed>) = 1 [pid 681] creat("./bus", 000 [pid 680] <... futex resumed>) = 0 [pid 679] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 684] <... setpgid resumed>) = 0 [pid 683] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 682] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 681] <... creat resumed>) = 3 [pid 680] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 684] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 683] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 682] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 681] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 680] <... futex resumed>) = 0 [pid 684] <... openat resumed>) = 3 [pid 683] <... mmap resumed>) = 0x7fe6f87b1000 [pid 682] chdir("./file0" [pid 681] <... futex resumed>) = 1 [pid 680] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 679] <... futex resumed>) = 0 [pid 684] write(3, "1000", 4 [pid 683] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 682] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 681] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 679] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 684] <... write resumed>) = 4 [pid 683] <... mprotect resumed>) = 0 [pid 682] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 681] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 684] close(3 [pid 683] rt_sigprocmask(SIG_BLOCK, ~[], [pid 682] <... futex resumed>) = 1 [pid 681] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 680] <... futex resumed>) = 0 [pid 679] <... futex resumed>) = 0 [pid 684] <... close resumed>) = 0 [pid 683] <... rt_sigprocmask resumed>[], 8) = 0 [pid 682] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 681] <... openat resumed>) = 4 [pid 680] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 679] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}executing program [pid 684] write(1, "executing program\n", 18 [pid 683] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 682] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 681] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 680] <... futex resumed>) = 0 [pid 679] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 684] <... write resumed>) = 18 [pid 682] creat("./bus", 000 [pid 681] <... futex resumed>) = 0 [pid 680] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 679] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 685 attached [pid 684] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 683] <... clone3 resumed> => {parent_tid=[686]}, 88) = 686 [pid 682] <... creat resumed>) = 3 [pid 681] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 679] <... futex resumed>) = 0 [pid 685] set_robust_list(0x5555636e06a0, 24 [pid 684] <... futex resumed>) = 0 [pid 683] rt_sigprocmask(SIG_SETMASK, [], [pid 682] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 681] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 679] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 685] <... set_robust_list resumed>) = 0 [pid 684] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 683] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 682] <... futex resumed>) = 1 [pid 681] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 680] <... futex resumed>) = 0 [pid 679] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 685] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 684] <... rt_sigaction resumed>NULL, 8) = 0 [pid 683] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 682] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 681] <... futex resumed>) = 0 [pid 680] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 685] <... prctl resumed>) = 0 [pid 684] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 683] <... futex resumed>) = 0 [pid 682] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 681] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 680] <... futex resumed>) = 0 [pid 679] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 685] setpgid(0, 0 [pid 684] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 683] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 682] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 681] <... open resumed>) = 5 [pid 680] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 679] <... futex resumed>) = 0 [pid 685] <... setpgid resumed>) = 0 [pid 684] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 682] <... openat resumed>) = 4 [pid 681] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 679] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 685] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 684] <... mmap resumed>) = 0x7fe6f87b1000 [pid 682] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 681] <... futex resumed>) = 0 [pid 679] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 685] <... openat resumed>) = 3 [pid 684] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 682] <... futex resumed>) = 1 [pid 681] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 680] <... futex resumed>) = 0 [pid 679] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 684] <... mprotect resumed>) = 0 [pid 682] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 681] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 680] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 679] <... futex resumed>) = 0 [pid 685] write(3, "1000", 4 [pid 684] rt_sigprocmask(SIG_BLOCK, ~[], [pid 682] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 681] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 680] <... futex resumed>) = 0 [pid 679] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 686 attached [pid 684] <... rt_sigprocmask resumed>[], 8) = 0 [pid 685] <... write resumed>) = 4 [pid 682] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 681] <... mmap resumed>) = 0x20000000 [pid 680] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 686] set_robust_list(0x7fe6f87d19a0, 24 [pid 685] close(3 [pid 684] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0}executing program [pid 682] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 681] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 686] <... set_robust_list resumed>) = 0 [pid 685] <... close resumed>) = 0 [pid 682] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 681] <... futex resumed>) = 1 [pid 679] <... futex resumed>) = 0 [pid 686] rt_sigprocmask(SIG_SETMASK, [], [pid 685] write(1, "executing program\n", 18 [pid 684] <... clone3 resumed> => {parent_tid=[687]}, 88) = 687 [pid 682] <... futex resumed>) = 1 [pid 681] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 680] <... futex resumed>) = 0 [pid 679] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 686] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 685] <... write resumed>) = 18 [pid 684] rt_sigprocmask(SIG_SETMASK, [], [pid 682] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 681] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 680] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 679] <... futex resumed>) = 0 [pid 686] memfd_create("syzkaller", 0 [pid 685] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 684] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 682] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 681] memfd_create("syzkaller", 0 [pid 680] <... futex resumed>) = 0 [pid 679] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 686] <... memfd_create resumed>) = 3 [pid 685] <... futex resumed>) = 0 [pid 684] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 682] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 681] <... memfd_create resumed>) = 6 [pid 680] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 686] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 685] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 684] <... futex resumed>) = 0 [pid 682] <... open resumed>) = 5 [pid 681] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 686] <... mmap resumed>) = 0x7fe6f03b1000 [pid 685] <... rt_sigaction resumed>NULL, 8) = 0 [pid 684] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 682] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 681] <... mmap resumed>) = 0x7fe6f03b1000 [pid 685] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 682] <... futex resumed>) = 1 [pid 681] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 680] <... futex resumed>) = 0 [pid 685] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 682] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 681] <... write resumed>) = 131072 [pid 680] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 685] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 682] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 681] munmap(0x7fe6f03b1000, 138412032 [pid 680] <... futex resumed>) = 0 [pid 685] <... mmap resumed>) = 0x7fe6f87b1000 [pid 682] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 681] <... munmap resumed>) = 0 [pid 680] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 686] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 685] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 682] <... mmap resumed>) = 0x20000000 [pid 681] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 685] <... mprotect resumed>) = 0 [pid 682] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 681] <... openat resumed>) = 7 [pid 685] rt_sigprocmask(SIG_BLOCK, ~[], [pid 682] <... futex resumed>) = 1 [pid 681] ioctl(7, LOOP_SET_FD, 6 [pid 680] <... futex resumed>) = 0 [pid 685] <... rt_sigprocmask resumed>[], 8) = 0 [pid 682] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 681] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 680] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 685] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 682] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 681] ioctl(7, LOOP_CLR_FD [pid 680] <... futex resumed>) = 0 [pid 682] memfd_create("syzkaller", 0 [pid 681] <... ioctl resumed>) = 0 [pid 680] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 685] <... clone3 resumed> => {parent_tid=[688]}, 88) = 688 [pid 682] <... memfd_create resumed>) = 6 [pid 685] rt_sigprocmask(SIG_SETMASK, [], [pid 682] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 685] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 682] <... mmap resumed>) = 0x7fe6f03b1000 [pid 686] <... write resumed>) = 262144 [pid 685] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 682] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 681] ioctl(7, LOOP_SET_FD, 6./strace-static-x86_64: Process 688 attached ./strace-static-x86_64: Process 687 attached [pid 686] munmap(0x7fe6f03b1000, 138412032 [pid 685] <... futex resumed>) = 0 [pid 682] <... write resumed>) = 131072 [pid 681] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 688] set_robust_list(0x7fe6f87d19a0, 24 [pid 687] set_robust_list(0x7fe6f87d19a0, 24 [pid 686] <... munmap resumed>) = 0 [pid 685] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 682] munmap(0x7fe6f03b1000, 138412032 [pid 681] close(7 [pid 688] <... set_robust_list resumed>) = 0 [pid 687] <... set_robust_list resumed>) = 0 [pid 686] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 688] rt_sigprocmask(SIG_SETMASK, [], [pid 687] rt_sigprocmask(SIG_SETMASK, [], [pid 682] <... munmap resumed>) = 0 [pid 681] <... close resumed>) = 0 [pid 682] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 681] close(6 [pid 682] <... openat resumed>) = 7 [pid 681] <... close resumed>) = 0 [pid 682] ioctl(7, LOOP_SET_FD, 6 [pid 681] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 682] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 681] <... futex resumed>) = 1 [pid 679] <... futex resumed>) = 0 [pid 682] ioctl(7, LOOP_CLR_FD [pid 681] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 679] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 682] <... ioctl resumed>) = 0 [pid 681] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 679] <... futex resumed>) = 0 [pid 681] mknod(0x20000000, 000 [pid 679] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 681] <... mknod resumed>) = -1 EEXIST (File exists) [pid 681] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 679] <... futex resumed>) = 0 [pid 681] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 679] exit_group(0 [pid 686] <... openat resumed>) = 4 [pid 681] <... futex resumed>) = ? [pid 679] <... exit_group resumed>) = ? [pid 688] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 687] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 686] ioctl(4, LOOP_SET_FD, 3 [pid 681] +++ exited with 0 +++ [pid 679] +++ exited with 0 +++ [pid 688] memfd_create("syzkaller", 0 [pid 682] ioctl(7, LOOP_SET_FD, 6 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=679, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 688] <... memfd_create resumed>) = 3 [pid 682] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 688] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 682] close(7 [pid 688] <... mmap resumed>) = 0x7fe6f03b1000 [pid 682] <... close resumed>) = 0 [pid 688] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 687] memfd_create("syzkaller", 0 [pid 686] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 682] close(6 [pid 687] <... memfd_create resumed>) = 3 [pid 686] ioctl(4, LOOP_CLR_FD [pid 682] <... close resumed>) = 0 [pid 687] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 686] <... ioctl resumed>) = 0 [pid 682] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 687] <... mmap resumed>) = 0x7fe6f03b1000 [pid 682] <... futex resumed>) = 1 [pid 680] <... futex resumed>) = 0 [pid 682] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 680] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 682] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 680] <... futex resumed>) = 0 [pid 682] mknod(0x20000000, 000 [pid 680] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 682] <... mknod resumed>) = -1 EEXIST (File exists) [pid 688] <... write resumed>) = 262144 [pid 682] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 687] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 686] ioctl(4, LOOP_SET_FD, 3 [pid 682] <... futex resumed>) = 1 [pid 680] <... futex resumed>) = 0 [pid 686] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 682] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 680] exit_group(0 [pid 686] close(4 [pid 682] <... futex resumed>) = ? [pid 680] <... exit_group resumed>) = ? [pid 687] <... write resumed>) = 262144 [pid 686] <... close resumed>) = 0 [pid 682] +++ exited with 0 +++ [pid 680] +++ exited with 0 +++ [pid 302] <... restart_syscall resumed>) = 0 [pid 687] munmap(0x7fe6f03b1000, 138412032 [pid 686] close(3 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=680, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 686] <... close resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 302] <... openat resumed>) = 3 [pid 688] munmap(0x7fe6f03b1000, 138412032 [pid 687] <... munmap resumed>) = 0 [pid 686] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] ioctl(3, LOOP_CLR_FD [pid 302] ioctl(3, LOOP_CLR_FD [pid 688] <... munmap resumed>) = 0 [pid 687] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 686] <... futex resumed>) = 1 [pid 683] <... futex resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 688] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 687] <... openat resumed>) = 4 [pid 686] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 683] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] close(3 [pid 302] close(3 [pid 688] <... openat resumed>) = 4 [pid 687] ioctl(4, LOOP_SET_FD, 3 [pid 686] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 683] <... futex resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 302] <... close resumed>) = 0 [pid 688] ioctl(4, LOOP_SET_FD, 3 [pid 687] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 686] chdir("./file0" [pid 683] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 688] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 687] ioctl(4, LOOP_CLR_FD [pid 686] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 688] ioctl(4, LOOP_CLR_FD [pid 687] <... ioctl resumed>) = 0 [pid 686] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 689 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 690 [pid 688] <... ioctl resumed>) = 0 [pid 686] <... futex resumed>) = 1 [pid 683] <... futex resumed>) = 0 [pid 686] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 683] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 686] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 686] creat("./bus", 000 [pid 683] <... futex resumed>) = 0 [pid 686] <... creat resumed>) = 3 [pid 683] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 686] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 683] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 686] <... futex resumed>) = 0 [pid 683] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 686] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 683] <... futex resumed>) = 0 ./strace-static-x86_64: Process 690 attached [pid 686] <... openat resumed>) = 4 [pid 683] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 686] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 683] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 686] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 683] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 687] ioctl(4, LOOP_SET_FD, 3 [pid 686] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 683] <... futex resumed>) = 0 [pid 687] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 686] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 683] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 687] close(4 [pid 688] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 688] close(4 [pid 687] <... close resumed>) = 0 [pid 686] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 687] close(3 [pid 686] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 688] <... close resumed>) = 0 [pid 686] <... futex resumed>) = 1 [pid 683] <... futex resumed>) = 0 [pid 688] close(3 [pid 686] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 683] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 688] <... close resumed>) = 0 [pid 687] <... close resumed>) = 0 [pid 686] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 683] <... futex resumed>) = 0 [pid 687] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 686] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 683] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 688] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 687] <... futex resumed>) = 1 [pid 686] <... open resumed>) = 5 [pid 684] <... futex resumed>) = 0 [pid 688] <... futex resumed>) = 1 [pid 687] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 686] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 685] <... futex resumed>) = 0 [pid 684] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 688] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 687] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 686] <... futex resumed>) = 1 [pid 685] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 684] <... futex resumed>) = 0 [pid 683] <... futex resumed>) = 0 [pid 688] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 687] chdir("./file0" [pid 686] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 685] <... futex resumed>) = 0 [pid 684] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 683] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 688] chdir("./file0" [pid 687] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 686] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 685] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 683] <... futex resumed>) = 0 [pid 688] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 687] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 686] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 683] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 688] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 687] <... futex resumed>) = 1 [pid 684] <... futex resumed>) = 0 [pid 688] <... futex resumed>) = 1 [pid 687] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 686] <... mmap resumed>) = 0x20000000 [pid 685] <... futex resumed>) = 0 [pid 684] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 690] set_robust_list(0x5555636e06a0, 24 [pid 688] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 687] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 686] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 685] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 684] <... futex resumed>) = 0 [pid 690] <... set_robust_list resumed>) = 0 [pid 688] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 687] creat("./bus", 000 [pid 686] <... futex resumed>) = 1 [pid 685] <... futex resumed>) = 0 [pid 684] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 683] <... futex resumed>) = 0 [pid 690] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 688] creat("./bus", 000 [pid 687] <... creat resumed>) = 3 [pid 686] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 685] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 683] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 690] <... prctl resumed>) = 0 [pid 688] <... creat resumed>) = 3 [pid 687] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 686] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 683] <... futex resumed>) = 0 ./strace-static-x86_64: Process 689 attached [pid 690] setpgid(0, 0 [pid 688] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 687] <... futex resumed>) = 1 [pid 684] <... futex resumed>) = 0 [pid 690] <... setpgid resumed>) = 0 [pid 688] <... futex resumed>) = 1 [pid 685] <... futex resumed>) = 0 [pid 684] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 690] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 688] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 686] memfd_create("syzkaller", 0 [pid 685] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 684] <... futex resumed>) = 0 [pid 683] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 690] <... openat resumed>) = 3 [pid 689] set_robust_list(0x5555636e06a0, 24 [pid 688] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 687] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 686] <... memfd_create resumed>) = 6 [pid 685] <... futex resumed>) = 0 [pid 684] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 690] write(3, "1000", 4 [pid 689] <... set_robust_list resumed>) = 0 [pid 688] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 687] <... openat resumed>) = 4 [pid 686] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 685] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 690] <... write resumed>) = 4 [pid 689] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 688] <... openat resumed>) = 4 [pid 687] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 686] <... mmap resumed>) = 0x7fe6f03b1000 [pid 690] close(3 [pid 689] <... prctl resumed>) = 0 [pid 688] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 687] <... futex resumed>) = 1 [pid 684] <... futex resumed>) = 0 [pid 690] <... close resumed>) = 0 [pid 688] <... futex resumed>) = 1 [pid 685] <... futex resumed>) = 0 [pid 684] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 690] write(1, "executing program\n", 18 [pid 688] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 685] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 684] <... futex resumed>) = 0 [pid 690] <... write resumed>) = 18 [pid 689] setpgid(0, 0 [pid 688] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 687] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 686] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 685] <... futex resumed>) = 0 [pid 684] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 690] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 688] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 685] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 690] <... futex resumed>) = 0 [pid 690] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 689] <... setpgid resumed>) = 0 [pid 688] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 687] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 686] <... write resumed>) = 131072 [pid 690] <... rt_sigaction resumed>NULL, 8) = 0 [pid 688] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 687] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 686] munmap(0x7fe6f03b1000, 138412032 [pid 690] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 689] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 688] <... futex resumed>) = 1 [pid 687] <... futex resumed>) = 1 [pid 685] <... futex resumed>) = 0 [pid 684] <... futex resumed>) = 0 [pid 690] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 689] <... openat resumed>) = 3 [pid 688] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 687] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 686] <... munmap resumed>) = 0 [pid 685] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 684] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 690] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 689] write(3, "1000", 4 [pid 688] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 687] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 686] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 685] <... futex resumed>) = 0 [pid 684] <... futex resumed>) = 0 [pid 690] <... mmap resumed>) = 0x7fe6f87b1000 [pid 689] <... write resumed>) = 4 [pid 688] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 687] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 686] <... openat resumed>) = 7 [pid 685] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 684] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 690] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 689] close(3 [pid 688] <... open resumed>) = 5 [pid 687] <... open resumed>) = 5 [pid 686] ioctl(7, LOOP_SET_FD, 6 [pid 690] <... mprotect resumed>) = 0 [pid 689] <... close resumed>) = 0 [pid 688] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 687] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 686] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 690] rt_sigprocmask(SIG_BLOCK, ~[], executing program [pid 689] write(1, "executing program\n", 18 [pid 688] <... futex resumed>) = 1 [pid 687] <... futex resumed>) = 1 [pid 685] <... futex resumed>) = 0 [pid 684] <... futex resumed>) = 0 [pid 686] ioctl(7, LOOP_CLR_FD [pid 690] <... rt_sigprocmask resumed>[], 8) = 0 [pid 689] <... write resumed>) = 18 [pid 688] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 687] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 686] <... ioctl resumed>) = 0 [pid 685] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 684] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 690] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 689] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 688] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 685] <... futex resumed>) = 0 [pid 684] <... futex resumed>) = 0 [pid 689] <... futex resumed>) = 0 [pid 688] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 687] <... mmap resumed>) = 0x20000000 [pid 685] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 684] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 690] <... clone3 resumed> => {parent_tid=[691]}, 88) = 691 [pid 689] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 688] <... mmap resumed>) = 0x20000000 [pid 687] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 684] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 690] rt_sigprocmask(SIG_SETMASK, [], [pid 689] <... rt_sigaction resumed>NULL, 8) = 0 [pid 688] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 687] <... futex resumed>) = 0 [pid 684] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 690] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 689] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 688] <... futex resumed>) = 1 [pid 687] memfd_create("syzkaller", 0 [pid 685] <... futex resumed>) = 0 [pid 684] <... futex resumed>) = 0 [pid 690] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 689] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 688] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 687] <... memfd_create resumed>) = 6 [pid 686] ioctl(7, LOOP_SET_FD, 6 [pid 685] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 684] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 690] <... futex resumed>) = 0 [pid 689] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 688] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 687] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 686] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 685] <... futex resumed>) = 0 [pid 690] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 689] <... mmap resumed>) = 0x7fe6f87b1000 [pid 688] memfd_create("syzkaller", 0 [pid 687] <... mmap resumed>) = 0x7fe6f03b1000 [pid 686] close(7 [pid 685] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 689] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 688] <... memfd_create resumed>) = 6 [pid 688] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 ./strace-static-x86_64: Process 691 attached [pid 689] <... mprotect resumed>) = 0 [pid 688] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 687] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 686] <... close resumed>) = 0 [pid 691] set_robust_list(0x7fe6f87d19a0, 24 [pid 689] rt_sigprocmask(SIG_BLOCK, ~[], [pid 688] <... write resumed>) = 131072 [pid 688] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 688] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 7 [pid 688] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 688] ioctl(7, LOOP_CLR_FD) = 0 [pid 688] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 688] close(7) = 0 [pid 688] close(6) = 0 [pid 688] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 689] <... rt_sigprocmask resumed>[], 8) = 0 [pid 686] close(6 [pid 685] <... futex resumed>) = 0 [pid 688] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 685] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 688] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 685] <... futex resumed>) = 0 [pid 689] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 688] mknod(0x20000000, 000 [pid 687] <... write resumed>) = 131072 [pid 685] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 688] <... mknod resumed>) = -1 EEXIST (File exists) [pid 686] <... close resumed>) = 0 [pid 688] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 685] <... futex resumed>) = 0 [pid 688] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 685] exit_group(0./strace-static-x86_64: Process 692 attached [pid 691] <... set_robust_list resumed>) = 0 [pid 688] <... futex resumed>) = ? [pid 687] munmap(0x7fe6f03b1000, 138412032 [pid 686] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 685] <... exit_group resumed>) = ? [pid 692] set_robust_list(0x7fe6f87d19a0, 24 [pid 691] rt_sigprocmask(SIG_SETMASK, [], [pid 689] <... clone3 resumed> => {parent_tid=[692]}, 88) = 692 [pid 688] +++ exited with 0 +++ [pid 687] <... munmap resumed>) = 0 [pid 686] <... futex resumed>) = 1 [pid 685] +++ exited with 0 +++ [pid 683] <... futex resumed>) = 0 [pid 689] rt_sigprocmask(SIG_SETMASK, [], [pid 687] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 686] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 683] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=685, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 691] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 692] <... set_robust_list resumed>) = 0 [pid 689] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 689] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 687] <... openat resumed>) = 7 [pid 686] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 683] <... futex resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 691] memfd_create("syzkaller", 0 [pid 692] rt_sigprocmask(SIG_SETMASK, [], [pid 689] <... futex resumed>) = 0 [pid 687] ioctl(7, LOOP_SET_FD, 6 [pid 686] mknod(0x20000000, 000 [pid 683] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 692] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 691] <... memfd_create resumed>) = 3 [pid 689] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 687] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 686] <... mknod resumed>) = -1 EEXIST (File exists) [pid 691] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 687] ioctl(7, LOOP_CLR_FD [pid 686] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 691] <... mmap resumed>) = 0x7fe6f03b1000 [pid 687] <... ioctl resumed>) = 0 [pid 686] <... futex resumed>) = 1 [pid 683] <... futex resumed>) = 0 [pid 686] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 683] exit_group(0 [pid 686] <... futex resumed>) = ? [pid 683] <... exit_group resumed>) = ? [pid 686] +++ exited with 0 +++ [pid 683] +++ exited with 0 +++ [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=683, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 687] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 687] close(7 [pid 304] <... openat resumed>) = 3 [pid 687] <... close resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 687] close(6 [pid 304] <... ioctl resumed>) = 0 [pid 304] close(3) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 692] memfd_create("syzkaller", 0 [pid 691] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 687] <... close resumed>) = 0 [pid 687] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 693 [pid 687] <... futex resumed>) = 1 [pid 684] <... futex resumed>) = 0 [pid 687] mknod(0x20000000, 000 [pid 684] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... restart_syscall resumed>) = 0 [pid 687] <... mknod resumed>) = -1 EEXIST (File exists) [pid 684] <... futex resumed>) = 0 [pid 687] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 684] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 687] <... futex resumed>) = 0 [pid 684] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 692] <... memfd_create resumed>) = 3 [pid 691] <... write resumed>) = 262144 [pid 687] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 684] exit_group(0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 692] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 691] munmap(0x7fe6f03b1000, 138412032 [pid 687] <... futex resumed>) = ? [pid 684] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 693 attached [pid 306] <... openat resumed>) = 3 [pid 693] set_robust_list(0x5555636e06a0, 24) = 0 [pid 693] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 687] +++ exited with 0 +++ [pid 684] +++ exited with 0 +++ [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=684, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 306] close(3 [pid 692] <... mmap resumed>) = 0x7fe6f03b1000 [pid 691] <... munmap resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 691] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 693] setpgid(0, 0 [pid 691] <... openat resumed>) = 4 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 694 [pid 691] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 693] <... setpgid resumed>) = 0 [pid 693] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 693] write(3, "1000", 4) = 4 [pid 693] close(3) = 0 [pid 693] write(1, "executing program\n", 18executing program [pid 692] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 691] ioctl(4, LOOP_CLR_FD) = 0 [pid 693] <... write resumed>) = 18 [pid 693] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 693] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 693] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 692] <... write resumed>) = 262144 [pid 693] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 693] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 693] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 693] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 693] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[695]}, 88) = 695 [pid 693] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 693] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 303] ioctl(3, LOOP_CLR_FD) = 0 [pid 303] close(3) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 696 [pid 693] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 694 attached [pid 694] set_robust_list(0x5555636e06a0, 24) = 0 [pid 694] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 694] setpgid(0, 0) = 0 [pid 694] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 692] munmap(0x7fe6f03b1000, 138412032 [pid 691] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 692] <... munmap resumed>) = 0 [pid 691] close(4 [pid 692] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 691] <... close resumed>) = 0 [pid 692] <... openat resumed>) = 4 [pid 691] close(3 [pid 694] <... openat resumed>) = 3 [pid 694] write(3, "1000", 4) = 4 [pid 694] close(3 [pid 691] <... close resumed>) = 0 [pid 692] ioctl(4, LOOP_SET_FD, 3 [pid 691] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 692] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 691] <... futex resumed>) = 1 [pid 690] <... futex resumed>) = 0 [pid 692] ioctl(4, LOOP_CLR_FD [pid 691] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 690] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 692] <... ioctl resumed>) = 0 [pid 691] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 690] <... futex resumed>) = 0 [pid 691] chdir("./file0" [pid 690] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 691] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 691] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 690] <... futex resumed>) = 0 [pid 690] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 691] creat("./bus", 000 [pid 690] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 691] <... creat resumed>) = 3 [pid 691] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 690] <... futex resumed>) = 0 [pid 691] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 690] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 691] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 690] <... futex resumed>) = 0 [pid 691] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 690] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 691] <... openat resumed>) = 4 [pid 691] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 692] ioctl(4, LOOP_SET_FD, 3 [pid 691] <... futex resumed>) = 1 [pid 690] <... futex resumed>) = 0 [pid 692] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 691] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 690] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 692] close(4 [pid 691] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 690] <... futex resumed>) = 0 [pid 692] <... close resumed>) = 0 [pid 691] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 690] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 696 attached [pid 692] close(3 [pid 691] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 691] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 694] <... close resumed>) = 0 [pid 694] write(1, "executing program\n", 18executing program ) = 18 [pid 694] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 692] <... close resumed>) = 0 [pid 691] <... futex resumed>) = 1 [pid 690] <... futex resumed>) = 0 [pid 696] set_robust_list(0x5555636e06a0, 24 [pid 692] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 691] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 690] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 692] <... futex resumed>) = 1 [pid 691] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 696] <... set_robust_list resumed>) = 0 [pid 690] <... futex resumed>) = 0 [pid 689] <... futex resumed>) = 0 [pid 692] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 691] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 690] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 689] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 696] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 692] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 691] <... open resumed>) = 5 [pid 689] <... futex resumed>) = 0 [pid 692] chdir("./file0" [pid 691] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 689] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 696] <... prctl resumed>) = 0 [pid 692] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 691] <... futex resumed>) = 1 [pid 690] <... futex resumed>) = 0 [pid 692] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 691] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 690] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 696] setpgid(0, 0 [pid 692] <... futex resumed>) = 1 [pid 691] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 690] <... futex resumed>) = 0 [pid 689] <... futex resumed>) = 0 [pid 696] <... setpgid resumed>) = 0 [pid 692] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 691] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 690] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 689] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 692] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 691] <... mmap resumed>) = 0x20000000 [pid 689] <... futex resumed>) = 0 [pid 696] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 692] creat("./bus", 000 [pid 691] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 689] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 691] <... futex resumed>) = 1 [pid 690] <... futex resumed>) = 0 [pid 690] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 692] <... creat resumed>) = 3 [pid 690] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 692] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 691] memfd_create("syzkaller", 0 [pid 696] <... openat resumed>) = 3 [pid 692] <... futex resumed>) = 1 [pid 691] <... memfd_create resumed>) = 6 [pid 689] <... futex resumed>) = 0 [pid 692] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 691] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 689] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 696] write(3, "1000", 4 [pid 689] <... futex resumed>) = 0 [pid 692] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 691] <... mmap resumed>) = 0x7fe6f03b1000 [pid 689] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 696] <... write resumed>) = 4 [pid 694] <... futex resumed>) = 0 [pid 694] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 694] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 694] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 694] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 694] rt_sigprocmask(SIG_BLOCK, ~[], [pid 696] close(3 [pid 692] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 691] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 694] <... rt_sigprocmask resumed>[], 8) = 0 [pid 694] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 691] <... write resumed>) = 131072 [pid 692] <... openat resumed>) = 4 [pid 696] <... close resumed>) = 0 [pid 691] munmap(0x7fe6f03b1000, 138412032 [pid 694] <... clone3 resumed> => {parent_tid=[697]}, 88) = 697 executing program [pid 696] write(1, "executing program\n", 18 [pid 694] rt_sigprocmask(SIG_SETMASK, [], [pid 692] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 691] <... munmap resumed>) = 0 [pid 696] <... write resumed>) = 18 [pid 694] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 692] <... futex resumed>) = 1 [pid 691] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 689] <... futex resumed>) = 0 ./strace-static-x86_64: Process 695 attached [pid 696] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 694] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 692] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 691] <... openat resumed>) = 7 [pid 689] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 696] <... futex resumed>) = 0 [pid 695] set_robust_list(0x7fe6f87d19a0, 24 [pid 694] <... futex resumed>) = 0 [pid 692] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 691] ioctl(7, LOOP_SET_FD, 6 [pid 689] <... futex resumed>) = 0 [pid 696] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 695] <... set_robust_list resumed>) = 0 [pid 694] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 692] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 691] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 689] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 696] <... rt_sigaction resumed>NULL, 8) = 0 [pid 695] rt_sigprocmask(SIG_SETMASK, [], [pid 692] <... futex resumed>) = 0 [pid 691] ioctl(7, LOOP_CLR_FD [pid 689] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 695] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 689] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 696] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 695] memfd_create("syzkaller", 0 [pid 692] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 691] <... ioctl resumed>) = 0 [pid 689] <... futex resumed>) = 0 [pid 696] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 695] <... memfd_create resumed>) = 3 [pid 692] <... open resumed>) = 5 [pid 689] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 696] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 692] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 696] <... mmap resumed>) = 0x7fe6f87b1000 [pid 695] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 692] <... futex resumed>) = 0 [pid 689] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 696] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 692] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 689] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 696] <... mprotect resumed>) = 0 [pid 692] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 689] <... futex resumed>) = 0 [pid 696] rt_sigprocmask(SIG_BLOCK, ~[], [pid 695] <... mmap resumed>) = 0x7fe6f03b1000 [pid 692] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 689] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 696] <... rt_sigprocmask resumed>[], 8) = 0 [pid 696] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 695] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 692] <... mmap resumed>) = 0x20000000 [pid 695] <... write resumed>) = 262144 [pid 692] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 691] ioctl(7, LOOP_SET_FD, 6 [pid 696] <... clone3 resumed> => {parent_tid=[698]}, 88) = 698 [pid 692] <... futex resumed>) = 1 [pid 691] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 689] <... futex resumed>) = 0 [pid 696] rt_sigprocmask(SIG_SETMASK, [], [pid 692] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 691] close(7 [pid 689] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 696] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 692] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 691] <... close resumed>) = 0 [pid 689] <... futex resumed>) = 0 [pid 696] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 692] memfd_create("syzkaller", 0 [pid 696] <... futex resumed>) = 0 [pid 691] close(6 [pid 689] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 692] <... memfd_create resumed>) = 6 [pid 695] munmap(0x7fe6f03b1000, 138412032 [pid 691] <... close resumed>) = 0 [pid 692] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 696] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 691] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 692] <... mmap resumed>) = 0x7fe6f03b1000 [pid 695] <... munmap resumed>) = 0 [pid 691] <... futex resumed>) = 1 [pid 690] <... futex resumed>) = 0 ./strace-static-x86_64: Process 697 attached [pid 695] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 690] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 697] set_robust_list(0x7fe6f87d19a0, 24 [pid 695] <... openat resumed>) = 4 [pid 690] <... futex resumed>) = 0 [pid 697] <... set_robust_list resumed>) = 0 [pid 695] ioctl(4, LOOP_SET_FD, 3 [pid 690] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 697] rt_sigprocmask(SIG_SETMASK, [], [pid 695] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 697] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 695] ioctl(4, LOOP_CLR_FD [pid 697] memfd_create("syzkaller", 0 [pid 695] <... ioctl resumed>) = 0 [pid 697] <... memfd_create resumed>) = 3 [pid 692] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 691] mknod(0x20000000, 000 [pid 697] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 692] <... write resumed>) = 131072 [pid 691] <... mknod resumed>) = -1 EEXIST (File exists) [pid 692] munmap(0x7fe6f03b1000, 138412032 [pid 691] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 697] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 692] <... munmap resumed>) = 0 [pid 691] <... futex resumed>) = 1 [pid 690] <... futex resumed>) = 0 [pid 695] ioctl(4, LOOP_SET_FD, 3 [pid 692] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 691] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 690] exit_group(0 [pid 695] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 692] <... openat resumed>) = 7 [pid 691] <... futex resumed>) = ? [pid 690] <... exit_group resumed>) = ? [pid 695] close(4 [pid 692] ioctl(7, LOOP_SET_FD, 6 [pid 691] +++ exited with 0 +++ [pid 690] +++ exited with 0 +++ ./strace-static-x86_64: Process 698 attached [pid 695] <... close resumed>) = 0 [pid 692] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=690, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 698] set_robust_list(0x7fe6f87d19a0, 24 [pid 695] close(3 [pid 692] ioctl(7, LOOP_CLR_FD [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 698] <... set_robust_list resumed>) = 0 [pid 695] <... close resumed>) = 0 [pid 692] <... ioctl resumed>) = 0 [pid 698] rt_sigprocmask(SIG_SETMASK, [], [pid 697] <... write resumed>) = 262144 [pid 695] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 693] <... futex resumed>) = 0 [pid 695] chdir("./file0" [pid 693] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 695] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 693] <... futex resumed>) = 0 [pid 695] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 693] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 695] <... futex resumed>) = 0 [pid 693] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 695] creat("./bus", 000 [pid 693] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 695] <... creat resumed>) = 3 [pid 693] <... futex resumed>) = 0 [pid 695] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 693] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 695] <... futex resumed>) = 0 [pid 693] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 695] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 693] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 695] <... openat resumed>) = 4 [pid 693] <... futex resumed>) = 0 [pid 697] munmap(0x7fe6f03b1000, 138412032 [pid 695] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 693] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 697] <... munmap resumed>) = 0 [pid 695] <... futex resumed>) = 0 [pid 693] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 697] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 695] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 693] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 697] <... openat resumed>) = 4 [pid 693] <... futex resumed>) = 0 [pid 697] ioctl(4, LOOP_SET_FD, 3 [pid 693] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 697] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 697] ioctl(4, LOOP_CLR_FD) = 0 [pid 695] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 698] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 695] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 698] memfd_create("syzkaller", 0 [pid 695] <... futex resumed>) = 1 [pid 693] <... futex resumed>) = 0 [pid 698] <... memfd_create resumed>) = 3 [pid 695] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 693] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 698] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 695] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 693] <... futex resumed>) = 0 [pid 698] <... mmap resumed>) = 0x7fe6f03b1000 [pid 695] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 693] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 698] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 697] ioctl(4, LOOP_SET_FD, 3 [pid 698] <... write resumed>) = 262144 [pid 697] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 695] <... open resumed>) = 5 [pid 692] ioctl(7, LOOP_SET_FD, 6 [pid 302] <... restart_syscall resumed>) = 0 [pid 698] munmap(0x7fe6f03b1000, 138412032 [pid 692] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 698] <... munmap resumed>) = 0 [pid 697] close(4 [pid 695] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 692] close(7 [pid 698] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 697] <... close resumed>) = 0 [pid 695] <... futex resumed>) = 1 [pid 693] <... futex resumed>) = 0 [pid 692] <... close resumed>) = 0 [pid 698] <... openat resumed>) = 4 [pid 697] close(3 [pid 695] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 693] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 692] close(6 [pid 698] ioctl(4, LOOP_SET_FD, 3 [pid 695] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 693] <... futex resumed>) = 0 [pid 692] <... close resumed>) = 0 [pid 698] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 695] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 693] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 692] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 698] ioctl(4, LOOP_CLR_FD [pid 692] <... futex resumed>) = 1 [pid 689] <... futex resumed>) = 0 [pid 698] <... ioctl resumed>) = 0 [pid 692] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 689] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 695] <... mmap resumed>) = 0x20000000 [pid 692] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 689] <... futex resumed>) = 0 [pid 697] <... close resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 697] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 695] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 692] mknod(0x20000000, 000 [pid 689] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] ioctl(3, LOOP_CLR_FD [pid 697] <... futex resumed>) = 1 [pid 695] <... futex resumed>) = 1 [pid 694] <... futex resumed>) = 0 [pid 693] <... futex resumed>) = 0 [pid 692] <... mknod resumed>) = -1 EEXIST (File exists) [pid 302] <... ioctl resumed>) = 0 [pid 697] chdir("./file0" [pid 695] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 694] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 693] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 692] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] close(3 [pid 697] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 695] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 694] <... futex resumed>) = 0 [pid 693] <... futex resumed>) = 0 [pid 692] <... futex resumed>) = 1 [pid 689] <... futex resumed>) = 0 [pid 302] <... close resumed>) = 0 [pid 697] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 695] memfd_create("syzkaller", 0 [pid 694] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 693] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 692] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 689] exit_group(0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 697] <... futex resumed>) = 0 [pid 695] <... memfd_create resumed>) = 6 [pid 694] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 692] <... futex resumed>) = ? [pid 689] <... exit_group resumed>) = ? [pid 698] ioctl(4, LOOP_SET_FD, 3 [pid 697] creat("./bus", 000 [pid 695] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 694] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 692] +++ exited with 0 +++ [pid 689] +++ exited with 0 +++ [pid 698] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 695] <... mmap resumed>) = 0x7fe6f03b1000 [pid 694] <... futex resumed>) = 0 [pid 698] close(4 [pid 694] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=689, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 699 [pid 698] <... close resumed>) = 0 [pid 698] close(3) = 0 [pid 698] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 696] <... futex resumed>) = 0 [pid 698] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 696] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 698] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 696] <... futex resumed>) = 0 [pid 698] chdir("./file0" [pid 696] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 698] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 698] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 696] <... futex resumed>) = 0 [pid 698] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 696] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 698] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 696] <... futex resumed>) = 0 [pid 695] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 698] creat("./bus", 000 [pid 697] <... creat resumed>) = 3 [pid 696] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 698] <... creat resumed>) = 3 [pid 698] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 696] <... futex resumed>) = 0 [pid 698] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 696] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 698] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 696] <... futex resumed>) = 0 [pid 698] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 696] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 698] <... openat resumed>) = 4 [pid 697] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 695] <... write resumed>) = 131072 [pid 698] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 696] <... futex resumed>) = 0 [pid 698] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 696] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 698] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 696] <... futex resumed>) = 0 [pid 697] <... futex resumed>) = 1 [pid 695] munmap(0x7fe6f03b1000, 138412032 [pid 694] <... futex resumed>) = 0 [pid 698] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 697] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 696] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 694] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 698] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 695] <... munmap resumed>) = 0 [pid 694] <... futex resumed>) = 0 [pid 698] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 697] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ./strace-static-x86_64: Process 699 attached [pid 698] <... futex resumed>) = 1 [pid 696] <... futex resumed>) = 0 [pid 695] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 694] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 699] set_robust_list(0x5555636e06a0, 24 [pid 698] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 697] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 696] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 695] <... openat resumed>) = 7 [pid 699] <... set_robust_list resumed>) = 0 [pid 698] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 696] <... futex resumed>) = 0 [pid 699] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 698] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 697] <... openat resumed>) = 4 [pid 696] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 695] ioctl(7, LOOP_SET_FD, 6 [pid 699] <... prctl resumed>) = 0 [pid 698] <... open resumed>) = 5 [pid 697] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 695] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 699] setpgid(0, 0 [pid 698] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 697] <... futex resumed>) = 1 [pid 695] ioctl(7, LOOP_CLR_FD [pid 694] <... futex resumed>) = 0 [pid 699] <... setpgid resumed>) = 0 [pid 698] <... futex resumed>) = 1 [pid 697] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 696] <... futex resumed>) = 0 [pid 695] <... ioctl resumed>) = 0 [pid 694] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 699] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 698] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 697] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 696] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 694] <... futex resumed>) = 0 [pid 699] <... openat resumed>) = 3 [pid 698] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 697] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 696] <... futex resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 699] write(3, "1000", 4 [pid 698] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 696] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 694] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 699] <... write resumed>) = 4 [pid 698] <... mmap resumed>) = 0x20000000 [pid 697] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 699] close(3 [pid 698] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 697] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 699] <... close resumed>) = 0 [pid 698] <... futex resumed>) = 1 [pid 696] <... futex resumed>) = 0 [pid 699] write(1, "executing program\n", 18 executing program [pid 698] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 697] <... futex resumed>) = 1 [pid 696] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 694] <... futex resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 699] <... write resumed>) = 18 [pid 698] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 697] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 696] <... futex resumed>) = 0 [pid 694] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 699] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 698] memfd_create("syzkaller", 0 [pid 697] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 696] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 695] ioctl(7, LOOP_SET_FD, 6 [pid 694] <... futex resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 699] <... futex resumed>) = 0 [pid 698] <... memfd_create resumed>) = 6 [pid 697] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 695] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 694] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] ioctl(3, LOOP_CLR_FD [pid 699] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 698] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 695] close(7 [pid 305] <... ioctl resumed>) = 0 [pid 699] <... rt_sigaction resumed>NULL, 8) = 0 [pid 698] <... mmap resumed>) = 0x7fe6f03b1000 [pid 697] <... open resumed>) = 5 [pid 305] close(3 [pid 699] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 698] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 697] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 695] <... close resumed>) = 0 [pid 699] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 698] <... write resumed>) = 131072 [pid 697] <... futex resumed>) = 1 [pid 695] close(6 [pid 694] <... futex resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 699] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 698] munmap(0x7fe6f03b1000, 138412032 [pid 697] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 694] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 699] <... mmap resumed>) = 0x7fe6f87b1000 [pid 698] <... munmap resumed>) = 0 [pid 699] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 698] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 695] <... close resumed>) = 0 [pid 694] <... futex resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 697] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 699] <... mprotect resumed>) = 0 [pid 698] <... openat resumed>) = 7 [pid 695] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 694] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 699] rt_sigprocmask(SIG_BLOCK, ~[], [pid 698] ioctl(7, LOOP_SET_FD, 6 [pid 699] <... rt_sigprocmask resumed>[], 8) = 0 [pid 698] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 697] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 695] <... futex resumed>) = 1 [pid 693] <... futex resumed>) = 0 [pid 699] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 698] ioctl(7, LOOP_CLR_FD) = 0 [pid 697] <... mmap resumed>) = 0x20000000 [pid 695] mknod(0x20000000, 000 [pid 693] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 700 [pid 699] <... clone3 resumed> => {parent_tid=[701]}, 88) = 701 [pid 697] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 695] <... mknod resumed>) = -1 EEXIST (File exists) [pid 693] <... futex resumed>) = 0 [pid 699] rt_sigprocmask(SIG_SETMASK, [], [pid 697] <... futex resumed>) = 1 [pid 695] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 694] <... futex resumed>) = 0 [pid 693] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 699] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 697] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 695] <... futex resumed>) = 0 [pid 694] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 693] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 699] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 697] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 695] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 694] <... futex resumed>) = 0 [pid 699] <... futex resumed>) = 0 [pid 693] exit_group(0 [pid 699] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 697] memfd_create("syzkaller", 0 [pid 694] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 693] <... exit_group resumed>) = ? [pid 697] <... memfd_create resumed>) = 6 [pid 695] <... futex resumed>) = ? [pid 698] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 698] close(7) = 0 [pid 698] close(6) = 0 [pid 695] +++ exited with 0 +++ [pid 693] +++ exited with 0 +++ [pid 697] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 698] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 700 attached ) = 1 [pid 697] <... mmap resumed>) = 0x7fe6f03b1000 [pid 696] <... futex resumed>) = 0 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=693, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 698] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 696] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 700] set_robust_list(0x5555636e06a0, 24 [pid 698] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 696] <... futex resumed>) = 0 [pid 700] <... set_robust_list resumed>) = 0 [pid 698] mknod(0x20000000, 000 [pid 696] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 700] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 698] <... mknod resumed>) = -1 EEXIST (File exists) [pid 700] <... prctl resumed>) = 0 [pid 698] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 700] setpgid(0, 0 [pid 698] <... futex resumed>) = 1 [pid 696] <... futex resumed>) = 0 [pid 700] <... setpgid resumed>) = 0 [pid 698] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 696] exit_group(0 [pid 700] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 698] <... futex resumed>) = ? [pid 696] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 701 attached [pid 700] <... openat resumed>) = 3 [pid 698] +++ exited with 0 +++ [pid 697] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 696] +++ exited with 0 +++ [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 700] write(3, "1000", 4) = 4 [pid 700] close(3) = 0 [pid 700] write(1, "executing program\n", 18) = 18 [pid 700] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 697] <... write resumed>) = 131072 executing program [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=696, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 697] munmap(0x7fe6f03b1000, 138412032 [pid 700] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 700] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 697] <... munmap resumed>) = 0 [pid 700] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 697] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 700] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 697] <... openat resumed>) = 7 [pid 303] <... openat resumed>) = 3 [pid 697] ioctl(7, LOOP_SET_FD, 6 [pid 700] <... mmap resumed>) = 0x7fe6f87b1000 [pid 697] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] ioctl(3, LOOP_CLR_FD [pid 697] ioctl(7, LOOP_CLR_FD [pid 303] <... ioctl resumed>) = 0 [pid 697] <... ioctl resumed>) = 0 [pid 303] close(3 [pid 700] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 303] <... close resumed>) = 0 [pid 700] <... mprotect resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 700] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 700] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[703]}, 88) = 703 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 702 [pid 700] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 700] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 700] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 701] set_robust_list(0x7fe6f87d19a0, 24./strace-static-x86_64: Process 702 attached [pid 702] set_robust_list(0x5555636e06a0, 24) = 0 [pid 702] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 701] <... set_robust_list resumed>) = 0 [pid 702] <... prctl resumed>) = 0 [pid 697] ioctl(7, LOOP_SET_FD, 6 [pid 304] <... restart_syscall resumed>) = 0 [pid 702] setpgid(0, 0 [pid 697] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 697] close(7 [pid 702] <... setpgid resumed>) = 0 [pid 697] <... close resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 697] close(6 [pid 702] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 304] <... openat resumed>) = 3 [pid 702] <... openat resumed>) = 3 [pid 697] <... close resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 697] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... ioctl resumed>) = 0 [pid 697] <... futex resumed>) = 1 [pid 694] <... futex resumed>) = 0 [pid 304] close(3 [pid 697] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 694] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... close resumed>) = 0 [pid 697] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 694] <... futex resumed>) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 697] mknod(0x20000000, 000 [pid 694] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 702] write(3, "1000", 4) = 4 [pid 702] close(3 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 704 [pid 697] <... mknod resumed>) = -1 EEXIST (File exists) executing program [pid 697] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 694] <... futex resumed>) = 0 [pid 697] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 702] <... close resumed>) = 0 [pid 694] exit_group(0 [pid 702] write(1, "executing program\n", 18 [pid 697] <... futex resumed>) = -1 (errno 18446744073709551615) [pid 694] <... exit_group resumed>) = ? [pid 702] <... write resumed>) = 18 [pid 697] +++ exited with 0 +++ [pid 702] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 702] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 702] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 702] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 702] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 702] rt_sigprocmask(SIG_BLOCK, ~[], [pid 694] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=694, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 702] <... rt_sigprocmask resumed>[], 8) = 0 [pid 702] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0}executing program [pid 701] rt_sigprocmask(SIG_SETMASK, [], [pid 702] <... clone3 resumed> => {parent_tid=[705]}, 88) = 705 [pid 702] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 702] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 702] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 703 attached [pid 703] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 703] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 703] memfd_create("syzkaller", 0) = 3 [pid 703] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 703] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 703] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 703] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 703] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 703] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 704 attached [pid 704] set_robust_list(0x5555636e06a0, 24) = 0 [pid 704] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 704] setpgid(0, 0) = 0 [pid 704] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 704] write(3, "1000", 4) = 4 [pid 704] close(3) = 0 [pid 704] write(1, "executing program\n", 18) = 18 [pid 704] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 704] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 703] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 703] close(4) = 0 [pid 703] close(3 [pid 306] <... restart_syscall resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 706 [pid 701] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 706 attached ./strace-static-x86_64: Process 705 attached [pid 703] <... close resumed>) = 0 [pid 703] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 700] <... futex resumed>) = 0 [pid 700] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 700] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 703] <... futex resumed>) = 1 [pid 703] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 703] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 700] <... futex resumed>) = 0 [pid 700] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 700] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 703] <... futex resumed>) = 1 [pid 703] creat("./bus", 000) = 3 [pid 703] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 701] memfd_create("syzkaller", 0 [pid 700] <... futex resumed>) = 0 [pid 700] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 700] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 703] <... futex resumed>) = 1 [pid 703] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 701] <... memfd_create resumed>) = 3 [pid 701] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 703] <... openat resumed>) = 4 [pid 703] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 700] <... futex resumed>) = 0 [pid 700] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 706] set_robust_list(0x5555636e06a0, 24 [pid 705] set_robust_list(0x7fe6f87d19a0, 24 [pid 701] <... mmap resumed>) = 0x7fe6f03b1000 [pid 700] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 703] <... futex resumed>) = 1 [pid 703] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL) = -1 ENOSPC (No space left on device) [pid 703] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 700] <... futex resumed>) = 0 [pid 700] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 700] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 703] <... futex resumed>) = 1 [pid 703] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 703] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 700] <... futex resumed>) = 0 [pid 700] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 700] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 703] <... futex resumed>) = 1 [pid 703] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 703] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 700] <... futex resumed>) = 0 [pid 700] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 700] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 703] <... futex resumed>) = 1 [pid 703] memfd_create("syzkaller", 0) = 6 [pid 703] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 701] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 703] <... mmap resumed>) = 0x7fe6f03b1000 [pid 704] <... rt_sigaction resumed>NULL, 8) = 0 [pid 704] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 701] <... write resumed>) = 262144 [pid 704] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 704] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 704] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 706] <... set_robust_list resumed>) = 0 [pid 705] <... set_robust_list resumed>) = 0 [pid 704] rt_sigprocmask(SIG_BLOCK, ~[], [pid 701] munmap(0x7fe6f03b1000, 138412032 [pid 704] <... rt_sigprocmask resumed>[], 8) = 0 [pid 704] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 701] <... munmap resumed>) = 0 [pid 706] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 701] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 706] <... prctl resumed>) = 0 [pid 705] rt_sigprocmask(SIG_SETMASK, [], [pid 704] <... clone3 resumed> => {parent_tid=[707]}, 88) = 707 [pid 704] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 704] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 704] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 701] <... openat resumed>) = 4 [pid 706] setpgid(0, 0 [pid 701] ioctl(4, LOOP_SET_FD, 3 [pid 706] <... setpgid resumed>) = 0 [pid 705] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 703] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 701] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 706] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 701] ioctl(4, LOOP_CLR_FD) = 0 [pid 706] <... openat resumed>) = 3 [pid 703] <... write resumed>) = 131072 [pid 703] munmap(0x7fe6f03b1000, 138412032 [pid 706] write(3, "1000", 4 [pid 703] <... munmap resumed>) = 0 [pid 705] memfd_create("syzkaller", 0 [pid 703] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 706] <... write resumed>) = 4 [pid 705] <... memfd_create resumed>) = 3 [pid 703] <... openat resumed>) = 7 [pid 703] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 703] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 707 attached [pid 706] close(3 [pid 707] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 707] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 706] <... close resumed>) = 0 [pid 705] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 701] ioctl(4, LOOP_SET_FD, 3 [pid 706] write(1, "executing program\n", 18 [pid 707] memfd_create("syzkaller", 0executing program ) = 3 [pid 701] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 706] <... write resumed>) = 18 [pid 705] <... mmap resumed>) = 0x7fe6f03b1000 [pid 707] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 706] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 701] close(4 [pid 703] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 703] close(7) = 0 [pid 703] close(6) = 0 [pid 703] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 700] <... futex resumed>) = 0 [pid 700] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 700] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 703] <... futex resumed>) = 1 [pid 703] mknod(0x20000000, 000) = -1 EEXIST (File exists) [pid 703] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 700] <... futex resumed>) = 0 [pid 700] exit_group(0) = ? [pid 703] <... futex resumed>) = ? [pid 706] <... futex resumed>) = 0 [pid 705] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 703] +++ exited with 0 +++ [pid 701] <... close resumed>) = 0 [pid 700] +++ exited with 0 +++ [pid 706] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 701] close(3 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=700, si_uid=0, si_status=0, si_utime=1, si_stime=0} --- [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 707] <... mmap resumed>) = 0x7fe6f03b1000 [pid 701] <... close resumed>) = 0 [pid 706] <... rt_sigaction resumed>NULL, 8) = 0 [pid 701] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 706] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 701] <... futex resumed>) = 1 [pid 706] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 701] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 699] <... futex resumed>) = 0 [pid 706] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 699] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 699] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 701] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 706] <... mmap resumed>) = 0x7fe6f87b1000 [pid 701] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 706] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 701] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 699] <... futex resumed>) = 0 [pid 706] <... mprotect resumed>) = 0 [pid 701] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 699] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 706] rt_sigprocmask(SIG_BLOCK, ~[], [pid 699] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 701] <... futex resumed>) = 0 [pid 701] creat("./bus", 000 [pid 706] <... rt_sigprocmask resumed>[], 8) = 0 [pid 706] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 701] <... creat resumed>) = 3 [pid 701] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 706] <... clone3 resumed> => {parent_tid=[708]}, 88) = 708 [pid 701] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 699] <... futex resumed>) = 0 [pid 706] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 699] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 699] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 706] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... restart_syscall resumed>) = 0 [pid 706] <... futex resumed>) = 0 [pid 701] <... futex resumed>) = 0 [pid 706] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 701] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 305] ioctl(3, LOOP_CLR_FD) = 0 [pid 305] close(3) = 0 [pid 701] <... openat resumed>) = 4 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 701] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 709 [pid 701] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 699] <... futex resumed>) = 0 [pid 699] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 701] <... futex resumed>) = 0 [pid 699] <... futex resumed>) = 1 [pid 701] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 699] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 701] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 701] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 699] <... futex resumed>) = 0 [pid 701] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 699] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 701] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 699] <... futex resumed>) = 0 [pid 701] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 699] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 701] <... open resumed>) = 5 [pid 701] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 699] <... futex resumed>) = 0 [pid 701] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 699] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 701] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 699] <... futex resumed>) = 0 [pid 701] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 699] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 707] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 701] <... mmap resumed>) = 0x20000000 [pid 701] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 699] <... futex resumed>) = 0 [pid 701] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 699] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 701] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 699] <... futex resumed>) = 0 [pid 699] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 701] memfd_create("syzkaller", 0) = 6 [pid 701] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 707] <... write resumed>) = 262144 [pid 707] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 707] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 707] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 707] ioctl(4, LOOP_CLR_FD [pid 701] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 707] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 708 attached [pid 708] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 708] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 708] memfd_create("syzkaller", 0) = 3 [pid 708] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 701] <... write resumed>) = 131072 [pid 708] <... mmap resumed>) = 0x7fe6f03b1000 [pid 705] <... write resumed>) = 262144 [pid 701] munmap(0x7fe6f03b1000, 138412032 [pid 708] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 707] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 707] close(4) = 0 [pid 707] close(3 [pid 701] <... munmap resumed>) = 0 [pid 705] munmap(0x7fe6f03b1000, 138412032 [pid 707] <... close resumed>) = 0 [pid 705] <... munmap resumed>) = 0 [pid 701] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 707] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 704] <... futex resumed>) = 0 [pid 704] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 704] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 709 attached [pid 705] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 701] <... openat resumed>) = 7 [pid 707] <... futex resumed>) = 1 [pid 705] <... openat resumed>) = 4 [pid 701] ioctl(7, LOOP_SET_FD, 6 [pid 707] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 707] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 704] <... futex resumed>) = 0 [pid 704] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 704] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 705] ioctl(4, LOOP_SET_FD, 3 [pid 701] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 707] <... futex resumed>) = 1 [pid 707] creat("./bus", 000) = 3 [pid 707] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 704] <... futex resumed>) = 0 [pid 704] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 704] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 707] <... futex resumed>) = 1 [pid 707] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 701] ioctl(7, LOOP_CLR_FD [pid 709] set_robust_list(0x5555636e06a0, 24 [pid 705] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 701] <... ioctl resumed>) = 0 [pid 705] ioctl(4, LOOP_CLR_FD [pid 709] <... set_robust_list resumed>) = 0 [pid 707] <... openat resumed>) = 4 [pid 707] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 704] <... futex resumed>) = 0 [pid 704] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 704] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 707] <... futex resumed>) = 1 [pid 707] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 705] <... ioctl resumed>) = 0 [pid 707] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 709] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 707] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 704] <... futex resumed>) = 0 [pid 704] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 709] setpgid(0, 0 [pid 704] <... futex resumed>) = 0 [pid 704] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 709] <... setpgid resumed>) = 0 [pid 701] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 707] <... futex resumed>) = 1 [pid 701] close(7 [pid 707] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 701] <... close resumed>) = 0 [pid 709] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 701] close(6 [pid 707] <... open resumed>) = 5 [pid 707] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 704] <... futex resumed>) = 0 [pid 704] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 704] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 701] <... close resumed>) = 0 [pid 701] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 699] <... futex resumed>) = 0 [pid 709] <... openat resumed>) = 3 [pid 701] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 699] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 709] write(3, "1000", 4 [pid 705] ioctl(4, LOOP_SET_FD, 3 [pid 701] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 699] <... futex resumed>) = 0 [pid 709] <... write resumed>) = 4 [pid 705] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 701] mknod(0x20000000, 000 [pid 699] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 709] close(3executing program [pid 705] close(4 [pid 701] <... mknod resumed>) = -1 EEXIST (File exists) [pid 707] <... futex resumed>) = 1 [pid 705] <... close resumed>) = 0 [pid 701] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 709] <... close resumed>) = 0 [pid 705] close(3 [pid 701] <... futex resumed>) = 1 [pid 699] <... futex resumed>) = 0 [pid 699] exit_group(0) = ? [pid 707] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 707] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 705] <... close resumed>) = 0 [pid 709] write(1, "executing program\n", 18 [pid 704] <... futex resumed>) = 0 [pid 704] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 704] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 707] <... futex resumed>) = 1 [pid 707] memfd_create("syzkaller", 0) = 6 [pid 707] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 709] <... write resumed>) = 18 [pid 707] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 705] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 701] +++ exited with 0 +++ [pid 699] +++ exited with 0 +++ [pid 705] <... futex resumed>) = 1 [pid 702] <... futex resumed>) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=699, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- [pid 709] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 705] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 702] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 709] <... futex resumed>) = 0 [pid 705] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 702] <... futex resumed>) = 0 [pid 709] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 705] chdir("./file0" [pid 702] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 705] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 709] <... rt_sigaction resumed>NULL, 8) = 0 [pid 705] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 709] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 705] <... futex resumed>) = 1 [pid 702] <... futex resumed>) = 0 [pid 709] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 705] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 702] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 709] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 705] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 702] <... futex resumed>) = 0 [pid 709] <... mmap resumed>) = 0x7fe6f87b1000 [pid 705] creat("./bus", 000 [pid 702] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 709] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 705] <... creat resumed>) = 3 [pid 709] <... mprotect resumed>) = 0 [pid 705] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 702] <... futex resumed>) = 0 [pid 702] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 702] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 709] rt_sigprocmask(SIG_BLOCK, ~[], [pid 705] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 709] <... rt_sigprocmask resumed>[], 8) = 0 [pid 707] <... write resumed>) = 131072 [pid 705] <... openat resumed>) = 4 [pid 705] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 709] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 705] <... futex resumed>) = 1 [pid 702] <... futex resumed>) = 0 [pid 702] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 705] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 702] <... futex resumed>) = 0 [pid 702] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 709] <... clone3 resumed> => {parent_tid=[710]}, 88) = 710 [pid 302] <... restart_syscall resumed>) = 0 [pid 709] rt_sigprocmask(SIG_SETMASK, [], [pid 705] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 705] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 708] <... write resumed>) = 262144 [pid 709] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 705] <... futex resumed>) = 1 [pid 702] <... futex resumed>) = 0 [pid 709] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 705] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 702] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 709] <... futex resumed>) = 0 [pid 705] <... open resumed>) = 5 [pid 702] <... futex resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 709] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 708] munmap(0x7fe6f03b1000, 138412032 [pid 705] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 702] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] ioctl(3, LOOP_CLR_FD [pid 708] <... munmap resumed>) = 0 [pid 705] <... futex resumed>) = 0 [pid 702] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 302] <... ioctl resumed>) = 0 [pid 708] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 707] munmap(0x7fe6f03b1000, 138412032 [pid 705] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 702] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] close(3 [pid 708] <... openat resumed>) = 4 [pid 707] <... munmap resumed>) = 0 [pid 705] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 702] <... futex resumed>) = 0 [pid 708] ioctl(4, LOOP_SET_FD, 3 [pid 707] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 705] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 702] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] <... close resumed>) = 0 [pid 708] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 707] <... openat resumed>) = 7 [pid 705] <... mmap resumed>) = 0x20000000 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 705] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 708] ioctl(4, LOOP_CLR_FD [pid 707] ioctl(7, LOOP_SET_FD, 6 [pid 708] <... ioctl resumed>) = 0 [pid 707] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 707] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 710 attached [pid 710] set_robust_list(0x7fe6f87d19a0, 24 [pid 705] <... futex resumed>) = 1 [pid 702] <... futex resumed>) = 0 [pid 705] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 702] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 711 [pid 710] <... set_robust_list resumed>) = 0 [pid 705] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 702] <... futex resumed>) = 0 [pid 702] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 705] memfd_create("syzkaller", 0) = 6 [pid 710] rt_sigprocmask(SIG_SETMASK, [], [pid 705] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 710] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 705] <... mmap resumed>) = 0x7fe6f03b1000 [pid 710] memfd_create("syzkaller", 0 [pid 708] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 708] close(4 [pid 707] ioctl(7, LOOP_SET_FD, 6 [pid 708] <... close resumed>) = 0 [pid 707] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 708] close(3 [pid 707] close(7 [pid 708] <... close resumed>) = 0 [pid 707] <... close resumed>) = 0 [pid 705] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 708] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 707] close(6 [pid 710] <... memfd_create resumed>) = 3 [pid 705] <... write resumed>) = 131072 ./strace-static-x86_64: Process 711 attached [pid 708] <... futex resumed>) = 1 [pid 707] <... close resumed>) = 0 [pid 706] <... futex resumed>) = 0 [pid 705] munmap(0x7fe6f03b1000, 138412032 [pid 708] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 707] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 704] <... futex resumed>) = 0 [pid 707] mknod(0x20000000, 000 [pid 704] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 707] <... mknod resumed>) = -1 EEXIST (File exists) [pid 706] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 705] <... munmap resumed>) = 0 [pid 704] <... futex resumed>) = 0 [pid 707] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 704] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 707] <... futex resumed>) = 0 [pid 704] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 707] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 704] exit_group(0 [pid 707] <... futex resumed>) = ? [pid 704] <... exit_group resumed>) = ? [pid 711] set_robust_list(0x5555636e06a0, 24 [pid 708] <... futex resumed>) = 0 [pid 707] +++ exited with 0 +++ [pid 706] <... futex resumed>) = 1 [pid 705] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 704] +++ exited with 0 +++ [pid 708] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 708] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 711] <... set_robust_list resumed>) = 0 [pid 708] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 706] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 705] <... openat resumed>) = 7 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=704, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 706] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 705] ioctl(7, LOOP_SET_FD, 6 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 706] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 705] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 708] <... futex resumed>) = 0 [pid 706] <... futex resumed>) = 1 [pid 705] ioctl(7, LOOP_CLR_FD [pid 708] creat("./bus", 000 [pid 706] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 705] <... ioctl resumed>) = 0 [pid 708] <... creat resumed>) = 3 [pid 708] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 706] <... futex resumed>) = 0 [pid 708] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 706] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 708] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 706] <... futex resumed>) = 0 [pid 708] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 706] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 711] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 708] <... openat resumed>) = 4 [pid 708] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 706] <... futex resumed>) = 0 [pid 708] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 706] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 708] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 706] <... futex resumed>) = 0 [pid 708] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 706] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 711] <... prctl resumed>) = 0 [pid 710] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 705] ioctl(7, LOOP_SET_FD, 6 [pid 710] <... mmap resumed>) = 0x7fe6f03b1000 [pid 705] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 711] setpgid(0, 0 [pid 708] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 705] close(7 [pid 708] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 711] <... setpgid resumed>) = 0 [pid 710] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 708] <... futex resumed>) = 1 [pid 706] <... futex resumed>) = 0 [pid 705] <... close resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 708] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 706] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 708] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 706] <... futex resumed>) = 0 [pid 705] close(6 [pid 708] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 706] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 708] <... open resumed>) = 5 [pid 708] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 706] <... futex resumed>) = 0 [pid 705] <... close resumed>) = 0 [pid 708] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 706] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 705] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 708] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 706] <... futex resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 708] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 706] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 705] <... futex resumed>) = 1 [pid 702] <... futex resumed>) = 0 [pid 711] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 708] <... mmap resumed>) = 0x20000000 [pid 705] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 702] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... openat resumed>) = 3 [pid 708] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 705] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 702] <... futex resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 708] <... futex resumed>) = 1 [pid 706] <... futex resumed>) = 0 [pid 705] mknod(0x20000000, 000 [pid 702] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... ioctl resumed>) = 0 [pid 708] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 706] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 705] <... mknod resumed>) = -1 EEXIST (File exists) [pid 304] close(3 [pid 711] <... openat resumed>) = 3 [pid 710] <... write resumed>) = 262144 [pid 708] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 706] <... futex resumed>) = 0 [pid 705] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... close resumed>) = 0 [pid 708] memfd_create("syzkaller", 0 [pid 706] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 705] <... futex resumed>) = 1 [pid 702] <... futex resumed>) = 0 [pid 711] write(3, "1000", 4 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 708] <... memfd_create resumed>) = 6 [pid 705] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 702] exit_group(0 [pid 708] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 702] <... exit_group resumed>) = ? [pid 708] <... mmap resumed>) = 0x7fe6f03b1000 [pid 711] <... write resumed>) = 4 [pid 708] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 705] <... futex resumed>) = ? [pid 711] close(3 [pid 708] <... write resumed>) = 131072 ./strace-static-x86_64: Process 712 attached [pid 710] munmap(0x7fe6f03b1000, 138412032 [pid 708] munmap(0x7fe6f03b1000, 138412032 [pid 705] +++ exited with 0 +++ [pid 702] +++ exited with 0 +++ [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 712 [pid 711] <... close resumed>) = 0 [pid 710] <... munmap resumed>) = 0 [pid 708] <... munmap resumed>) = 0 [pid 711] write(1, "executing program\n", 18 [pid 710] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 708] openat(AT_FDCWD, "/dev/loop4", O_RDWRexecuting program [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=702, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 711] <... write resumed>) = 18 [pid 710] <... openat resumed>) = 4 [pid 708] <... openat resumed>) = 7 [pid 710] ioctl(4, LOOP_SET_FD, 3 [pid 708] ioctl(7, LOOP_SET_FD, 6 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 710] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 708] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 711] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 710] ioctl(4, LOOP_CLR_FD [pid 708] ioctl(7, LOOP_CLR_FD [pid 710] <... ioctl resumed>) = 0 [pid 708] <... ioctl resumed>) = 0 [pid 712] set_robust_list(0x5555636e06a0, 24 [pid 711] <... futex resumed>) = 0 [pid 712] <... set_robust_list resumed>) = 0 [pid 712] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 711] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 712] <... prctl resumed>) = 0 [pid 712] setpgid(0, 0 [pid 711] <... rt_sigaction resumed>NULL, 8) = 0 [pid 712] <... setpgid resumed>) = 0 [pid 711] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 712] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 711] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 711] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 710] ioctl(4, LOOP_SET_FD, 3 [pid 708] ioctl(7, LOOP_SET_FD, 6 [pid 711] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 710] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 708] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 710] close(4 [pid 708] close(7 [pid 711] <... mprotect resumed>) = 0 [pid 710] <... close resumed>) = 0 [pid 708] <... close resumed>) = 0 [pid 710] close(3 [pid 708] close(6 [pid 711] rt_sigprocmask(SIG_BLOCK, ~[], [pid 710] <... close resumed>) = 0 [pid 708] <... close resumed>) = 0 [pid 711] <... rt_sigprocmask resumed>[], 8) = 0 [pid 710] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 708] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 711] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 710] <... futex resumed>) = 1 [pid 709] <... futex resumed>) = 0 [pid 708] <... futex resumed>) = 1 [pid 706] <... futex resumed>) = 0 [pid 710] chdir("./file0" [pid 709] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 708] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 706] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 711] <... clone3 resumed> => {parent_tid=[713]}, 88) = 713 [pid 710] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 709] <... futex resumed>) = 0 [pid 708] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 706] <... futex resumed>) = 0 [pid 712] <... openat resumed>) = 3 [pid 711] rt_sigprocmask(SIG_SETMASK, [], [pid 710] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 709] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 708] mknod(0x20000000, 000 [pid 706] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... restart_syscall resumed>) = 0 [pid 712] write(3, "1000", 4 [pid 711] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 710] <... futex resumed>) = 0 [pid 709] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 708] <... mknod resumed>) = -1 EEXIST (File exists) [pid 712] <... write resumed>) = 4 [pid 711] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 710] creat("./bus", 000 [pid 709] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 708] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 712] close(3 [pid 711] <... futex resumed>) = 0 [pid 710] <... creat resumed>) = 3 [pid 709] <... futex resumed>) = 0 [pid 708] <... futex resumed>) = 1 [pid 706] <... futex resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 712] <... close resumed>) = 0 [pid 711] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 710] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 709] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}executing program [pid 708] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 706] exit_group(0 [pid 712] write(1, "executing program\n", 18 [pid 710] <... futex resumed>) = 0 [pid 709] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 708] <... futex resumed>) = ? [pid 706] <... exit_group resumed>) = ? [pid 303] <... openat resumed>) = 3 [pid 712] <... write resumed>) = 18 [pid 710] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 709] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 708] +++ exited with 0 +++ [pid 706] +++ exited with 0 +++ [pid 303] ioctl(3, LOOP_CLR_FD [pid 712] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 710] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 709] <... futex resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=706, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] <... ioctl resumed>) = 0 [pid 712] <... futex resumed>) = 0 [pid 710] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 709] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 303] close(3 [pid 712] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 710] <... openat resumed>) = 4 [pid 712] <... rt_sigaction resumed>NULL, 8) = 0 [pid 710] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... close resumed>) = 0 [pid 712] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 710] <... futex resumed>) = 1 [pid 709] <... futex resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 712] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 710] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 709] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 712] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 710] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 709] <... futex resumed>) = 0 [pid 712] <... mmap resumed>) = 0x7fe6f87b1000 [pid 710] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 709] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 712] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 710] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 712] <... mprotect resumed>) = 0 [pid 710] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 714 [pid 712] rt_sigprocmask(SIG_BLOCK, ~[], [pid 710] <... futex resumed>) = 1 [pid 709] <... futex resumed>) = 0 [pid 712] <... rt_sigprocmask resumed>[], 8) = 0 [pid 710] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 709] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 712] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 710] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 709] <... futex resumed>) = 0 [pid 710] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 709] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 712] <... clone3 resumed> => {parent_tid=[715]}, 88) = 715 [pid 710] <... open resumed>) = 5 [pid 712] rt_sigprocmask(SIG_SETMASK, [], [pid 710] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 712] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 710] <... futex resumed>) = 1 [pid 709] <... futex resumed>) = 0 [pid 712] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 710] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 709] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... restart_syscall resumed>) = 0 [pid 712] <... futex resumed>) = 0 [pid 710] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 709] <... futex resumed>) = 0 [pid 712] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 710] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 709] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 710] <... mmap resumed>) = 0x20000000 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 710] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... openat resumed>) = 3 ./strace-static-x86_64: Process 713 attached [pid 710] <... futex resumed>) = 1 [pid 709] <... futex resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 710] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 709] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... ioctl resumed>) = 0 [pid 710] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 709] <... futex resumed>) = 0 [pid 306] close(3 [pid 710] memfd_create("syzkaller", 0 [pid 709] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 306] <... close resumed>) = 0 [pid 713] set_robust_list(0x7fe6f87d19a0, 24 [pid 710] <... memfd_create resumed>) = 6 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 710] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 716 [pid 710] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 710] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 710] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 7 [pid 710] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 710] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 715 attached [pid 715] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 715] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 715] memfd_create("syzkaller", 0) = 3 [pid 715] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 710] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 710] close(7) = 0 [pid 710] close(6) = 0 [pid 710] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 709] <... futex resumed>) = 0 [pid 710] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 709] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 710] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 709] <... futex resumed>) = 0 [pid 710] mknod(0x20000000, 000 [pid 709] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 710] <... mknod resumed>) = -1 EEXIST (File exists) [pid 710] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 709] <... futex resumed>) = 0 [pid 710] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 709] exit_group(0 [pid 710] <... futex resumed>) = ? [pid 709] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 714 attached [pid 713] <... set_robust_list resumed>) = 0 [pid 710] +++ exited with 0 +++ [pid 709] +++ exited with 0 +++ ./strace-static-x86_64: Process 716 attached [pid 716] set_robust_list(0x5555636e06a0, 24) = 0 [pid 716] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 713] rt_sigprocmask(SIG_SETMASK, [], [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=709, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 716] <... prctl resumed>) = 0 [pid 716] setpgid(0, 0) = 0 [pid 716] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 714] set_robust_list(0x5555636e06a0, 24 [pid 713] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 716] <... openat resumed>) = 3 [pid 716] write(3, "1000", 4) = 4 [pid 715] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 executing program [pid 714] <... set_robust_list resumed>) = 0 [pid 713] memfd_create("syzkaller", 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 716] close(3) = 0 [pid 716] write(1, "executing program\n", 18) = 18 [pid 716] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 716] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 716] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 713] <... memfd_create resumed>) = 3 [pid 305] <... openat resumed>) = 3 [pid 716] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 714] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 713] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 714] <... prctl resumed>) = 0 [pid 716] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 716] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 716] rt_sigprocmask(SIG_BLOCK, ~[], [pid 714] setpgid(0, 0 [pid 713] <... mmap resumed>) = 0x7fe6f03b1000 [pid 305] <... ioctl resumed>) = 0 [pid 716] <... rt_sigprocmask resumed>[], 8) = 0 [pid 716] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[717]}, 88) = 717 [pid 305] close(3 [pid 716] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 716] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 716] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 715] <... write resumed>) = 262144 [pid 715] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 715] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 713] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 714] <... setpgid resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 715] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 715] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 717 attached [pid 717] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 717] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 717] memfd_create("syzkaller", 0) = 3 [pid 717] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 713] <... write resumed>) = 262144 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 714] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 715] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 714] <... openat resumed>) = 3 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 718 [pid 715] close(4) = 0 [pid 715] close(3) = 0 [pid 714] write(3, "1000", 4 [pid 713] munmap(0x7fe6f03b1000, 138412032 [pid 715] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 712] <... futex resumed>) = 0 [pid 712] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 712] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 715] <... futex resumed>) = 1 [pid 714] <... write resumed>) = 4 [pid 713] <... munmap resumed>) = 0 [pid 715] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 715] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 712] <... futex resumed>) = 0 [pid 712] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 712] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 715] <... futex resumed>) = 1 [pid 715] creat("./bus", 000 [pid 714] close(3 [pid 713] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 715] <... creat resumed>) = 3 [pid 714] <... close resumed>) = 0 [pid 713] <... openat resumed>) = 4 [pid 714] write(1, "executing program\n", 18 [pid 715] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 712] <... futex resumed>) = 0 executing program [pid 712] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 712] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 714] <... write resumed>) = 18 [pid 713] ioctl(4, LOOP_SET_FD, 3 [pid 715] <... futex resumed>) = 1 [pid 714] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 713] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 714] <... futex resumed>) = 0 [pid 715] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 714] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 713] ioctl(4, LOOP_CLR_FD [pid 714] <... rt_sigaction resumed>NULL, 8) = 0 [pid 714] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 713] <... ioctl resumed>) = 0 [pid 714] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 715] <... openat resumed>) = 4 [pid 714] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 715] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 714] <... mmap resumed>) = 0x7fe6f87b1000 [pid 714] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 712] <... futex resumed>) = 0 [pid 714] <... mprotect resumed>) = 0 [pid 712] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 712] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 714] rt_sigprocmask(SIG_BLOCK, ~[], [pid 715] <... futex resumed>) = 1 [pid 714] <... rt_sigprocmask resumed>[], 8) = 0 [pid 715] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 714] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 715] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 714] <... clone3 resumed> => {parent_tid=[719]}, 88) = 719 [pid 714] rt_sigprocmask(SIG_SETMASK, [], [pid 715] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 714] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 714] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 712] <... futex resumed>) = 0 [pid 714] <... futex resumed>) = 0 [pid 712] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 714] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 712] <... futex resumed>) = 0 [pid 713] ioctl(4, LOOP_SET_FD, 3 [pid 712] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 713] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 715] <... futex resumed>) = 1 [pid 713] close(4 [pid 715] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 713] <... close resumed>) = 0 [pid 715] <... open resumed>) = 5 [pid 713] close(3 [pid 715] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 712] <... futex resumed>) = 0 [pid 715] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 712] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 715] <... mmap resumed>) = 0x20000000 [pid 712] <... futex resumed>) = 0 [pid 712] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 715] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 713] <... close resumed>) = 0 [pid 715] <... futex resumed>) = 1 [pid 713] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 712] <... futex resumed>) = 0 [pid 715] memfd_create("syzkaller", 0 [pid 713] <... futex resumed>) = 1 [pid 712] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 711] <... futex resumed>) = 0 [pid 715] <... memfd_create resumed>) = 6 [pid 713] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 712] <... futex resumed>) = 0 [pid 711] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 715] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 713] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 712] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 711] <... futex resumed>) = 0 [pid 715] <... mmap resumed>) = 0x7fe6f03b1000 [pid 713] chdir("./file0" [pid 711] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 713] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 715] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 713] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 715] <... write resumed>) = 131072 [pid 713] <... futex resumed>) = 1 [pid 711] <... futex resumed>) = 0 [pid 713] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 711] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 713] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 711] <... futex resumed>) = 0 [pid 713] creat("./bus", 000 [pid 711] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 715] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 713] <... creat resumed>) = 3 [pid 715] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 713] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 711] <... futex resumed>) = 0 [pid 713] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 711] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 713] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 711] <... futex resumed>) = 0 [pid 713] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 711] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 715] <... openat resumed>) = 7 [pid 715] ioctl(7, LOOP_SET_FD, 6 [pid 713] <... openat resumed>) = 4 [pid 715] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 713] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 715] ioctl(7, LOOP_CLR_FD [pid 713] <... futex resumed>) = 1 [pid 711] <... futex resumed>) = 0 [pid 713] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 711] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 713] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 711] <... futex resumed>) = 0 [pid 713] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 711] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 715] <... ioctl resumed>) = 0 [pid 713] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 713] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 711] <... futex resumed>) = 0 [pid 713] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 711] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 713] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 711] <... futex resumed>) = 0 [pid 713] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 711] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 717] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 713] <... open resumed>) = 5 [pid 713] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 715] ioctl(7, LOOP_SET_FD, 6 [pid 713] <... futex resumed>) = 1 [pid 711] <... futex resumed>) = 0 [pid 713] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 711] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 713] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 715] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 711] <... futex resumed>) = 0 [pid 715] close(7) = 0 [pid 715] close(6 [pid 713] <... mmap resumed>) = 0x20000000 [pid 713] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 711] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 713] <... futex resumed>) = 0 [pid 711] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 713] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 711] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 715] <... close resumed>) = 0 [pid 713] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 711] <... futex resumed>) = 0 [pid 715] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 713] memfd_create("syzkaller", 0 [pid 711] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 719 attached [pid 715] <... futex resumed>) = 1 [pid 713] <... memfd_create resumed>) = 6 [pid 712] <... futex resumed>) = 0 [pid 715] mknod(0x20000000, 000 [pid 712] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 715] <... mknod resumed>) = -1 EEXIST (File exists) [pid 712] <... futex resumed>) = 0 [pid 715] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 712] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 719] set_robust_list(0x7fe6f87d19a0, 24 [pid 717] <... write resumed>) = 262144 [pid 715] <... futex resumed>) = 0 [pid 713] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 712] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 715] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 712] exit_group(0 [pid 715] <... futex resumed>) = ? [pid 712] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 718 attached [pid 719] <... set_robust_list resumed>) = 0 [pid 715] +++ exited with 0 +++ [pid 713] <... mmap resumed>) = 0x7fe6f03b1000 [pid 712] +++ exited with 0 +++ [pid 718] set_robust_list(0x5555636e06a0, 24 [pid 717] munmap(0x7fe6f03b1000, 138412032executing program [pid 718] <... set_robust_list resumed>) = 0 [pid 717] <... munmap resumed>) = 0 [pid 718] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 717] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 718] <... prctl resumed>) = 0 [pid 717] <... openat resumed>) = 4 [pid 718] setpgid(0, 0 [pid 717] ioctl(4, LOOP_SET_FD, 3 [pid 718] <... setpgid resumed>) = 0 [pid 717] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 718] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 717] ioctl(4, LOOP_CLR_FD [pid 718] <... openat resumed>) = 3 [pid 717] <... ioctl resumed>) = 0 [pid 718] write(3, "1000", 4) = 4 [pid 718] close(3 [pid 713] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=712, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 718] <... close resumed>) = 0 [pid 718] write(1, "executing program\n", 18) = 18 [pid 718] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 718] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 718] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 713] <... write resumed>) = 131072 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 718] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 718] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 719] rt_sigprocmask(SIG_SETMASK, [], [pid 713] munmap(0x7fe6f03b1000, 138412032 [pid 718] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 718] rt_sigprocmask(SIG_BLOCK, ~[], [pid 717] ioctl(4, LOOP_SET_FD, 3 [pid 713] <... munmap resumed>) = 0 [pid 719] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 718] <... rt_sigprocmask resumed>[], 8) = 0 [pid 717] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 718] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 717] close(4 [pid 719] memfd_create("syzkaller", 0 [pid 717] <... close resumed>) = 0 [pid 713] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 304] <... restart_syscall resumed>) = 0 [pid 718] <... clone3 resumed> => {parent_tid=[720]}, 88) = 720 [pid 717] close(3 [pid 719] <... memfd_create resumed>) = 3 [pid 718] rt_sigprocmask(SIG_SETMASK, [], [pid 717] <... close resumed>) = 0 [pid 713] <... openat resumed>) = 7 [pid 718] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 717] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 718] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 717] <... futex resumed>) = 1 [pid 716] <... futex resumed>) = 0 [pid 718] <... futex resumed>) = 0 [pid 717] chdir("./file0" [pid 716] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 718] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 717] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 716] <... futex resumed>) = 0 [pid 717] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 716] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 717] <... futex resumed>) = 0 [pid 716] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 717] creat("./bus", 000 [pid 716] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 717] <... creat resumed>) = 3 [pid 716] <... futex resumed>) = 0 [pid 717] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 716] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 719] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 717] <... futex resumed>) = 0 [pid 716] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 713] ioctl(7, LOOP_SET_FD, 6 [pid 717] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 716] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 719] <... mmap resumed>) = 0x7fe6f03b1000 [pid 717] <... openat resumed>) = 4 [pid 716] <... futex resumed>) = 0 [pid 713] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] <... openat resumed>) = 3 [pid 717] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 716] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 717] <... futex resumed>) = 0 [pid 716] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 713] ioctl(7, LOOP_CLR_FD [pid 304] ioctl(3, LOOP_CLR_FD [pid 717] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 716] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 716] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 719] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 717] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 713] <... ioctl resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 717] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] close(3 [pid 717] <... futex resumed>) = 1 [pid 716] <... futex resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 717] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 716] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 717] <... open resumed>) = 5 [pid 716] <... futex resumed>) = 0 [pid 717] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 716] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 717] <... futex resumed>) = 0 [pid 716] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 717] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 716] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 717] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 716] <... futex resumed>) = 0 [pid 717] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 716] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 717] <... mmap resumed>) = 0x20000000 [pid 717] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 716] <... futex resumed>) = 0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 721 [pid 717] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 716] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 717] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 716] <... futex resumed>) = 0 [pid 717] memfd_create("syzkaller", 0 [pid 716] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 717] <... memfd_create resumed>) = 6 [pid 717] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 713] ioctl(7, LOOP_SET_FD, 6 [pid 719] <... write resumed>) = 262144 [pid 717] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 713] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 719] munmap(0x7fe6f03b1000, 138412032 [pid 717] <... write resumed>) = 131072 [pid 713] close(7 [pid 717] munmap(0x7fe6f03b1000, 138412032 [pid 713] <... close resumed>) = 0 [pid 719] <... munmap resumed>) = 0 [pid 717] <... munmap resumed>) = 0 [pid 713] close(6 [pid 717] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 7 [pid 717] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 717] ioctl(7, LOOP_CLR_FD) = 0 [pid 713] <... close resumed>) = 0 [pid 719] openat(AT_FDCWD, "/dev/loop1", O_RDWR./strace-static-x86_64: Process 721 attached [pid 721] set_robust_list(0x5555636e06a0, 24) = 0 [pid 721] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 713] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 719] <... openat resumed>) = 4 [pid 713] <... futex resumed>) = 1 [pid 711] <... futex resumed>) = 0 [pid 713] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 711] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 719] ioctl(4, LOOP_SET_FD, 3 [pid 713] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 711] <... futex resumed>) = 0 [pid 713] mknod(0x20000000, 000 [pid 719] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 711] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 719] ioctl(4, LOOP_CLR_FD [pid 713] <... mknod resumed>) = -1 EEXIST (File exists) [pid 721] <... prctl resumed>) = 0 [pid 719] <... ioctl resumed>) = 0 [pid 713] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 721] setpgid(0, 0 [pid 713] <... futex resumed>) = 1 [pid 711] <... futex resumed>) = 0 [pid 713] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 711] exit_group(0 [pid 713] <... futex resumed>) = ? [pid 711] <... exit_group resumed>) = ? [pid 717] ioctl(7, LOOP_SET_FD, 6 [pid 713] +++ exited with 0 +++ [pid 717] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 717] close(7) = 0 [pid 717] close(6) = 0 [pid 711] +++ exited with 0 +++ [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=711, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 717] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 719] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 717] <... futex resumed>) = 1 [pid 716] <... futex resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 721] <... setpgid resumed>) = 0 [pid 717] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 716] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 721] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 719] close(4 [pid 717] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 716] <... futex resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 721] <... openat resumed>) = 3 [pid 719] <... close resumed>) = 0 [pid 717] mknod(0x20000000, 000 [pid 716] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] ioctl(3, LOOP_CLR_FD [pid 721] write(3, "1000", 4 [pid 717] <... mknod resumed>) = -1 EEXIST (File exists) executing program [pid 302] <... ioctl resumed>) = 0 [pid 721] <... write resumed>) = 4 [pid 719] close(3 [pid 717] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] close(3 [pid 721] close(3 [pid 717] <... futex resumed>) = 1 [pid 716] <... futex resumed>) = 0 [pid 721] <... close resumed>) = 0 [pid 717] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 716] exit_group(0 [pid 302] <... close resumed>) = 0 [pid 721] write(1, "executing program\n", 18 [pid 717] <... futex resumed>) = ? [pid 716] <... exit_group resumed>) = ? [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 721] <... write resumed>) = 18 [pid 719] <... close resumed>) = 0 [pid 717] +++ exited with 0 +++ [pid 716] +++ exited with 0 +++ [pid 721] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=716, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 721] <... futex resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 721] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 719] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 722 [pid 714] <... futex resumed>) = 0 [pid 714] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 719] <... futex resumed>) = 1 [pid 714] <... futex resumed>) = 0 [pid 714] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 719] chdir("./file0" [pid 721] <... rt_sigaction resumed>NULL, 8) = 0 [pid 721] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 721] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 721] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 721] rt_sigprocmask(SIG_BLOCK, ~[], [pid 719] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 721] <... rt_sigprocmask resumed>[], 8) = 0 [pid 719] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 721] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 719] <... futex resumed>) = 1 [pid 714] <... futex resumed>) = 0 [pid 719] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 714] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 719] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 714] <... futex resumed>) = 0 [pid 719] creat("./bus", 000 [pid 714] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 719] <... creat resumed>) = 3 [pid 719] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 721] <... clone3 resumed> => {parent_tid=[723]}, 88) = 723 [pid 719] <... futex resumed>) = 1 [pid 714] <... futex resumed>) = 0 [pid 719] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 714] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 719] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 714] <... futex resumed>) = 0 [pid 719] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 714] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 721] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 721] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 721] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 723 attached [pid 723] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 723] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 719] <... openat resumed>) = 4 [pid 719] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 714] <... futex resumed>) = 0 [pid 719] <... futex resumed>) = 1 [pid 714] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 719] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 714] <... futex resumed>) = 0 [pid 714] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 723] memfd_create("syzkaller", 0) = 3 [pid 719] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 719] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 723] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 719] <... futex resumed>) = 1 [pid 714] <... futex resumed>) = 0 [pid 719] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 723] <... mmap resumed>) = 0x7fe6f03b1000 [pid 719] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 714] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 719] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 714] <... futex resumed>) = 0 [pid 723] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 719] <... open resumed>) = 5 [pid 714] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 719] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 714] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 719] <... futex resumed>) = 0 [pid 714] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 719] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 714] <... futex resumed>) = 0 [pid 714] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 719] <... mmap resumed>) = 0x20000000 [pid 719] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 714] <... futex resumed>) = 0 [pid 719] <... futex resumed>) = 1 [pid 714] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 719] memfd_create("syzkaller", 0 [pid 714] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 719] <... memfd_create resumed>) = 6 [pid 719] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 723] <... write resumed>) = 262144 [pid 723] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 723] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 723] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 723] ioctl(4, LOOP_CLR_FD) = 0 [pid 719] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 306] <... restart_syscall resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 722 attached [pid 719] <... write resumed>) = 131072 [pid 719] munmap(0x7fe6f03b1000, 138412032 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 724 [pid 723] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 719] <... munmap resumed>) = 0 [pid 723] close(4) = 0 [pid 719] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 723] close(3 [pid 719] <... openat resumed>) = 7 [pid 722] set_robust_list(0x5555636e06a0, 24 [pid 719] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 722] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 720 attached [pid 719] ioctl(7, LOOP_CLR_FD) = 0 [pid 722] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 720] set_robust_list(0x7fe6f87d19a0, 24 [pid 722] <... prctl resumed>) = 0 [pid 723] <... close resumed>) = 0 [pid 722] setpgid(0, 0 [pid 720] <... set_robust_list resumed>) = 0 [pid 723] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 721] <... futex resumed>) = 0 [pid 721] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 721] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 723] <... futex resumed>) = 1 [pid 723] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 723] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 721] <... futex resumed>) = 0 [pid 721] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 721] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 723] <... futex resumed>) = 1 [pid 723] creat("./bus", 000) = 3 [pid 722] <... setpgid resumed>) = 0 [pid 719] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 719] close(7 [pid 723] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 721] <... futex resumed>) = 0 [pid 721] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 721] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 723] <... futex resumed>) = 1 [pid 723] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 719] <... close resumed>) = 0 [pid 722] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 719] close(6 [pid 723] <... openat resumed>) = 4 [pid 723] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 721] <... futex resumed>) = 0 [pid 721] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 719] <... close resumed>) = 0 [pid 721] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 723] <... futex resumed>) = 1 [pid 722] <... openat resumed>) = 3 [pid 719] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 723] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 722] write(3, "1000", 4 [pid 720] rt_sigprocmask(SIG_SETMASK, [], [pid 719] <... futex resumed>) = 1 [pid 714] <... futex resumed>) = 0 [pid 719] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 714] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 722] <... write resumed>) = 4 [pid 714] <... futex resumed>) = 0 [pid 722] close(3 [pid 719] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 714] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 723] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 719] mknod(0x20000000, 000 [pid 722] <... close resumed>) = 0 [pid 723] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 721] <... futex resumed>) = 0 [pid 721] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 721] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 723] <... futex resumed>) = 1 [pid 723] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 719] <... mknod resumed>) = -1 EEXIST (File exists) [pid 722] write(1, "executing program\n", 18 [pid 720] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 719] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 723] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 719] <... futex resumed>) = 1 [pid 714] <... futex resumed>) = 0 [pid 722] <... write resumed>) = 18 [pid 720] memfd_create("syzkaller", 0 [pid 719] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 714] exit_group(0) = ? [pid 719] <... futex resumed>) = ? ./strace-static-x86_64: Process 724 attached [pid 723] <... futex resumed>) = 1 [pid 722] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 721] <... futex resumed>) = 0 [pid 720] <... memfd_create resumed>) = 3 [pid 721] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 721] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 723] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 719] +++ exited with 0 +++ [pid 714] +++ exited with 0 +++ [pid 722] <... futex resumed>) = 0 [pid 720] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=714, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 722] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 720] <... mmap resumed>) = 0x7fe6f03b1000 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 723] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 721] <... futex resumed>) = 0 [pid 721] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 721] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 723] <... futex resumed>) = 1 [pid 723] memfd_create("syzkaller", 0) = 6 [pid 723] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 723] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 722] <... rt_sigaction resumed>NULL, 8) = 0 [pid 720] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 723] <... write resumed>) = 131072 [pid 722] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 724] set_robust_list(0x5555636e06a0, 24) = 0 [pid 724] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 723] munmap(0x7fe6f03b1000, 138412032 [pid 720] <... write resumed>) = 262144 [pid 722] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 724] setpgid(0, 0 [pid 723] <... munmap resumed>) = 0 [pid 722] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 720] munmap(0x7fe6f03b1000, 138412032 [pid 724] <... setpgid resumed>) = 0 [pid 724] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 722] <... mmap resumed>) = 0x7fe6f87b1000 [pid 722] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 723] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 7 [pid 724] <... openat resumed>) = 3 [pid 722] <... mprotect resumed>) = 0 [pid 720] <... munmap resumed>) = 0 [pid 723] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 723] ioctl(7, LOOP_CLR_FD) = 0 [pid 724] write(3, "1000", 4) = 4 [pid 724] close(3) = 0 [pid 722] rt_sigprocmask(SIG_BLOCK, ~[], [pid 724] write(1, "executing program\n", 18executing program ) = 18 [pid 724] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 724] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 724] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 724] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 722] <... rt_sigprocmask resumed>[], 8) = 0 [pid 720] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 722] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 724] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 720] <... openat resumed>) = 4 [pid 722] <... clone3 resumed> => {parent_tid=[725]}, 88) = 725 [pid 722] rt_sigprocmask(SIG_SETMASK, [], [pid 720] ioctl(4, LOOP_SET_FD, 3 [pid 722] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 723] ioctl(7, LOOP_SET_FD, 6 [pid 722] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 720] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 722] <... futex resumed>) = 0 [pid 723] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 722] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 720] ioctl(4, LOOP_CLR_FD [pid 723] close(7) = 0 [pid 723] close(6) = 0 [pid 720] <... ioctl resumed>) = 0 [pid 724] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 724] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 723] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 721] <... futex resumed>) = 0 [pid 721] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 721] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 723] <... futex resumed>) = 1 [pid 723] mknod(0x20000000, 000) = -1 EEXIST (File exists) [pid 723] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 721] <... futex resumed>) = 0 [pid 721] exit_group(0) = ? [pid 724] <... clone3 resumed> => {parent_tid=[726]}, 88) = 726 [pid 720] ioctl(4, LOOP_SET_FD, 3 [pid 724] rt_sigprocmask(SIG_SETMASK, [], [pid 723] <... futex resumed>) = ? ./strace-static-x86_64: Process 726 attached [pid 724] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 720] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] <... restart_syscall resumed>) = 0 [pid 726] set_robust_list(0x7fe6f87d19a0, 24 [pid 724] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 723] +++ exited with 0 +++ [pid 721] +++ exited with 0 +++ [pid 720] close(4 [pid 724] <... futex resumed>) = 0 [pid 724] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 720] <... close resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 720] close(3 [pid 726] <... set_robust_list resumed>) = 0 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=721, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] <... openat resumed>) = 3 [pid 303] ioctl(3, LOOP_CLR_FD) = 0 [pid 303] close(3) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 727 [pid 720] <... close resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR./strace-static-x86_64: Process 725 attached [pid 725] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 725] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 726] rt_sigprocmask(SIG_SETMASK, [], [pid 725] memfd_create("syzkaller", 0 [pid 720] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... openat resumed>) = 3 [pid 725] <... memfd_create resumed>) = 3 [pid 725] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 726] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 720] <... futex resumed>) = 1 [pid 718] <... futex resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 718] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 718] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 726] memfd_create("syzkaller", 0 [pid 725] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 720] chdir("./file0" [pid 304] <... ioctl resumed>) = 0 [pid 726] <... memfd_create resumed>) = 3 [pid 720] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 304] close(3./strace-static-x86_64: Process 727 attached [pid 727] set_robust_list(0x5555636e06a0, 24 [pid 720] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... close resumed>) = 0 [pid 727] <... set_robust_list resumed>) = 0 [pid 727] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 726] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 720] <... futex resumed>) = 1 [pid 718] <... futex resumed>) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 718] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 718] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 727] <... prctl resumed>) = 0 [pid 727] setpgid(0, 0) = 0 [pid 727] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 720] creat("./bus", 000 [pid 727] <... openat resumed>) = 3 [pid 720] <... creat resumed>) = 3 [pid 720] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 728 [pid 726] <... mmap resumed>) = 0x7fe6f03b1000 [pid 727] write(3, "1000", 4 [pid 720] <... futex resumed>) = 1 [pid 718] <... futex resumed>) = 0 [pid 720] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 718] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 718] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 720] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) executing program [pid 727] <... write resumed>) = 4 [pid 720] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 727] close(3) = 0 [pid 727] write(1, "executing program\n", 18) = 18 [pid 720] <... openat resumed>) = 4 [pid 727] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 720] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 727] <... futex resumed>) = 0 [pid 720] <... futex resumed>) = 1 [pid 718] <... futex resumed>) = 0 [pid 720] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 718] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 720] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 718] <... futex resumed>) = 0 [pid 720] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 718] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 727] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 720] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 727] <... rt_sigaction resumed>NULL, 8) = 0 [pid 720] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 727] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 720] <... futex resumed>) = 1 [pid 718] <... futex resumed>) = 0 [pid 720] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 718] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 720] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 718] <... futex resumed>) = 0 [pid 720] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 718] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 727] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 720] <... open resumed>) = 5 [pid 727] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 720] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 718] <... futex resumed>) = 0 [pid 720] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 718] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 720] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 718] <... futex resumed>) = 0 [pid 720] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 718] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 725] <... write resumed>) = 262144 [pid 720] <... mmap resumed>) = 0x20000000 [pid 727] <... mmap resumed>) = 0x7fe6f87b1000 [pid 720] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 727] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 720] <... futex resumed>) = 1 [pid 718] <... futex resumed>) = 0 [pid 720] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 718] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 720] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 718] <... futex resumed>) = 0 [pid 727] <... mprotect resumed>) = 0 [pid 720] memfd_create("syzkaller", 0 [pid 718] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 727] rt_sigprocmask(SIG_BLOCK, ~[], [pid 720] <... memfd_create resumed>) = 6 [pid 727] <... rt_sigprocmask resumed>[], 8) = 0 [pid 725] munmap(0x7fe6f03b1000, 138412032 [pid 720] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 727] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 725] <... munmap resumed>) = 0 [pid 720] <... mmap resumed>) = 0x7fe6f03b1000 [pid 725] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 727] <... clone3 resumed> => {parent_tid=[729]}, 88) = 729 [pid 725] <... openat resumed>) = 4 [pid 727] rt_sigprocmask(SIG_SETMASK, [], [pid 725] ioctl(4, LOOP_SET_FD, 3 [pid 727] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 725] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 727] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 725] ioctl(4, LOOP_CLR_FD [pid 727] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 725] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 729 attached [pid 729] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 729] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 720] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 729] memfd_create("syzkaller", 0) = 3 [pid 729] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 720] <... write resumed>) = 131072 [pid 720] munmap(0x7fe6f03b1000, 138412032 [pid 725] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 725] close(4) = 0 [pid 725] close(3 [pid 726] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 725] <... close resumed>) = 0 [pid 720] <... munmap resumed>) = 0 [pid 725] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 725] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 722] <... futex resumed>) = 0 [pid 720] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 722] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 725] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 722] <... futex resumed>) = 0 [pid 720] <... openat resumed>) = 7 [pid 722] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 725] chdir("./file0" [pid 720] ioctl(7, LOOP_SET_FD, 6 [pid 725] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 725] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 722] <... futex resumed>) = 0 [pid 720] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 722] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 725] creat("./bus", 000 [pid 722] <... futex resumed>) = 0 [pid 720] ioctl(7, LOOP_CLR_FD [pid 725] <... creat resumed>) = 3 [pid 722] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 720] <... ioctl resumed>) = 0 [pid 725] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 722] <... futex resumed>) = 0 [pid 722] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 725] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 722] <... futex resumed>) = 0 [pid 725] <... openat resumed>) = 4 [pid 722] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 725] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 722] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 725] <... futex resumed>) = 0 [pid 722] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 725] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 722] <... futex resumed>) = 0 [pid 722] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 726] <... write resumed>) = 262144 [pid 725] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 726] munmap(0x7fe6f03b1000, 138412032 [pid 725] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 720] ioctl(7, LOOP_SET_FD, 6 [pid 725] <... futex resumed>) = 1 [pid 722] <... futex resumed>) = 0 [pid 720] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 722] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 720] close(7 [pid 726] <... munmap resumed>) = 0 [pid 722] <... futex resumed>) = 0 [pid 726] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 722] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 720] <... close resumed>) = 0 [pid 725] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 720] close(6 [pid 726] <... openat resumed>) = 4 [pid 725] <... open resumed>) = 5 [pid 725] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 722] <... futex resumed>) = 0 [pid 725] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 722] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 725] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 722] <... futex resumed>) = 0 [pid 725] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 722] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 726] ioctl(4, LOOP_SET_FD, 3 [pid 725] <... mmap resumed>) = 0x20000000 [pid 720] <... close resumed>) = 0 [pid 720] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 726] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 725] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 720] <... futex resumed>) = 1 [pid 718] <... futex resumed>) = 0 [pid 726] ioctl(4, LOOP_CLR_FD [pid 729] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 725] <... futex resumed>) = 1 [pid 722] <... futex resumed>) = 0 [pid 720] mknod(0x20000000, 000 [pid 718] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 726] <... ioctl resumed>) = 0 [pid 725] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 722] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 720] <... mknod resumed>) = -1 EEXIST (File exists) [pid 718] <... futex resumed>) = 0 [pid 725] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 722] <... futex resumed>) = 0 [pid 720] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 718] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 725] memfd_create("syzkaller", 0 [pid 722] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 720] <... futex resumed>) = 0 [pid 718] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 725] <... memfd_create resumed>) = 6 [pid 720] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 718] exit_group(0 [pid 725] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 720] <... futex resumed>) = ? [pid 718] <... exit_group resumed>) = ? [pid 725] <... mmap resumed>) = 0x7fe6f03b1000 [pid 720] +++ exited with 0 +++ [pid 718] +++ exited with 0 +++ ./strace-static-x86_64: Process 728 attached [pid 726] ioctl(4, LOOP_SET_FD, 3 [pid 725] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 729] <... write resumed>) = 262144 [pid 728] set_robust_list(0x5555636e06a0, 24 [pid 726] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 725] <... write resumed>) = 131072 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=718, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 726] close(4 [pid 725] munmap(0x7fe6f03b1000, 138412032 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 728] <... set_robust_list resumed>) = 0 [pid 726] <... close resumed>) = 0 [pid 725] <... munmap resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 726] close(3 [pid 725] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 725] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 725] ioctl(7, LOOP_CLR_FD) = 0 [pid 729] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 726] <... close resumed>) = 0 [pid 726] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 729] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 305] <... openat resumed>) = 3 [pid 726] <... futex resumed>) = 1 [pid 724] <... futex resumed>) = 0 [pid 729] <... openat resumed>) = 4 [pid 724] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] ioctl(3, LOOP_CLR_FD [pid 729] ioctl(4, LOOP_SET_FD, 3 [pid 724] <... futex resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 729] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 726] chdir("./file0" [pid 724] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] close(3 [pid 729] ioctl(4, LOOP_CLR_FD [pid 728] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 305] <... close resumed>) = 0 [pid 726] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 728] <... prctl resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 726] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 729] <... ioctl resumed>) = 0 [pid 725] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 725] close(7) = 0 [pid 725] close(6 [pid 728] setpgid(0, 0 [pid 726] <... futex resumed>) = 1 [pid 725] <... close resumed>) = 0 [pid 724] <... futex resumed>) = 0 [pid 728] <... setpgid resumed>) = 0 [pid 726] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 725] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 724] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 726] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 725] <... futex resumed>) = 1 [pid 722] <... futex resumed>) = 0 [pid 724] <... futex resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 730 [pid 728] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 726] creat("./bus", 000 [pid 725] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 724] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 722] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 726] <... creat resumed>) = 3 [pid 725] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 722] <... futex resumed>) = 0 [pid 728] <... openat resumed>) = 3 [pid 726] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 725] mknod(0x20000000, 000 [pid 722] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 728] write(3, "1000", 4 [pid 726] <... futex resumed>) = 1 [pid 725] <... mknod resumed>) = -1 EEXIST (File exists) [pid 724] <... futex resumed>) = 0 [pid 729] ioctl(4, LOOP_SET_FD, 3 [pid 728] <... write resumed>) = 4 [pid 726] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 725] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 724] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 729] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 728] close(3 [pid 726] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 725] <... futex resumed>) = 1 [pid 724] <... futex resumed>) = 0 executing program [pid 722] <... futex resumed>) = 0 [pid 729] close(4 [pid 728] <... close resumed>) = 0 [pid 726] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 725] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 724] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 729] <... close resumed>) = 0 [pid 726] <... openat resumed>) = 4 [pid 722] exit_group(0 [pid 728] write(1, "executing program\n", 18 [pid 726] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 729] close(3 [pid 725] <... futex resumed>) = ? [pid 722] <... exit_group resumed>) = ? [pid 729] <... close resumed>) = 0 [pid 728] <... write resumed>) = 18 [pid 726] <... futex resumed>) = 1 [pid 725] +++ exited with 0 +++ [pid 724] <... futex resumed>) = 0 [pid 729] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 727] <... futex resumed>) = 0 [pid 729] chdir("./file0" [pid 727] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 729] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 727] <... futex resumed>) = 0 [pid 729] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 727] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 729] <... futex resumed>) = 0 [pid 727] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 729] creat("./bus", 000 [pid 727] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 729] <... creat resumed>) = 3 [pid 728] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 727] <... futex resumed>) = 0 [pid 726] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 724] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 722] +++ exited with 0 +++ [pid 729] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 727] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=722, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 730 attached [pid 729] <... futex resumed>) = 0 [pid 728] <... futex resumed>) = 0 [pid 727] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 726] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 724] <... futex resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 730] set_robust_list(0x5555636e06a0, 24 [pid 729] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 728] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 727] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 726] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 724] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 730] <... set_robust_list resumed>) = 0 [pid 729] <... openat resumed>) = 4 [pid 728] <... rt_sigaction resumed>NULL, 8) = 0 [pid 727] <... futex resumed>) = 0 [pid 726] <... futex resumed>) = 0 [pid 724] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 730] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 729] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 728] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 727] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 726] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 724] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 730] <... prctl resumed>) = 0 [pid 729] <... futex resumed>) = 0 [pid 728] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 727] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 726] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 724] <... futex resumed>) = 0 [pid 730] setpgid(0, 0 [pid 729] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 728] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 727] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 726] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 724] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 730] <... setpgid resumed>) = 0 [pid 729] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 728] <... mmap resumed>) = 0x7fe6f87b1000 [pid 727] <... futex resumed>) = 0 [pid 730] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 729] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 728] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 727] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 726] <... open resumed>) = 5 [pid 730] <... openat resumed>) = 3 [pid 729] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 728] <... mprotect resumed>) = 0 [pid 726] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 730] write(3, "1000", 4 [pid 729] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 730] <... write resumed>) = 4 [pid 729] <... futex resumed>) = 1 [pid 728] rt_sigprocmask(SIG_BLOCK, ~[], [pid 727] <... futex resumed>) = 0 [pid 726] <... futex resumed>) = 1 [pid 724] <... futex resumed>) = 0 [pid 730] close(3 [pid 729] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 728] <... rt_sigprocmask resumed>[], 8) = 0 [pid 727] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 726] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 724] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 730] <... close resumed>) = 0 [pid 729] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 728] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 727] <... futex resumed>) = 0 [pid 726] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 724] <... futex resumed>) = 0 [pid 730] write(1, "executing program\n", 18 [pid 729] open("./bus", O_RDWR|O_SYNC|O_DIRECTexecuting program [pid 727] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 724] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 730] <... write resumed>) = 18 [pid 729] <... open resumed>) = 5 [pid 726] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 730] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 729] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 728] <... clone3 resumed> => {parent_tid=[731]}, 88) = 731 [pid 730] <... futex resumed>) = 0 [pid 729] <... futex resumed>) = 1 [pid 727] <... futex resumed>) = 0 [pid 730] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 729] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 727] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 730] <... rt_sigaction resumed>NULL, 8) = 0 [pid 729] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 728] rt_sigprocmask(SIG_SETMASK, [], [pid 727] <... futex resumed>) = 0 [pid 726] <... mmap resumed>) = 0x20000000 [pid 730] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 729] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 728] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 727] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 730] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 729] <... mmap resumed>) = 0x20000000 [pid 728] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 726] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 730] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 729] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 728] <... futex resumed>) = 0 [pid 726] <... futex resumed>) = 1 [pid 730] <... mmap resumed>) = 0x7fe6f87b1000 [pid 729] <... futex resumed>) = 1 [pid 728] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 727] <... futex resumed>) = 0 [pid 726] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 724] <... futex resumed>) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 730] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 729] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 727] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 724] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 730] <... mprotect resumed>) = 0 [pid 729] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 727] <... futex resumed>) = 0 [pid 726] <... futex resumed>) = 0 [pid 724] <... futex resumed>) = 1 [pid 730] rt_sigprocmask(SIG_BLOCK, ~[], [pid 729] memfd_create("syzkaller", 0 [pid 727] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 726] memfd_create("syzkaller", 0 [pid 724] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 730] <... rt_sigprocmask resumed>[], 8) = 0 [pid 729] <... memfd_create resumed>) = 6 [pid 726] <... memfd_create resumed>) = 6 [pid 302] <... openat resumed>) = 3 [pid 730] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 729] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 726] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 729] <... mmap resumed>) = 0x7fe6f03b1000 [pid 726] <... mmap resumed>) = 0x7fe6f03b1000 [pid 302] <... ioctl resumed>) = 0 [pid 730] <... clone3 resumed> => {parent_tid=[732]}, 88) = 732 [pid 729] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 302] close(3 [pid 730] rt_sigprocmask(SIG_SETMASK, [], [pid 729] <... write resumed>) = 131072 [pid 302] <... close resumed>) = 0 [pid 730] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 729] munmap(0x7fe6f03b1000, 138412032 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 730] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 729] <... munmap resumed>) = 0 [pid 726] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 730] <... futex resumed>) = 0 [pid 729] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 733 [pid 730] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 729] <... openat resumed>) = 7 [pid 729] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 729] ioctl(7, LOOP_CLR_FD [pid 726] <... write resumed>) = 131072 [pid 729] <... ioctl resumed>) = 0 [pid 726] munmap(0x7fe6f03b1000, 138412032./strace-static-x86_64: Process 733 attached [pid 733] set_robust_list(0x5555636e06a0, 24 [pid 726] <... munmap resumed>) = 0 [pid 733] <... set_robust_list resumed>) = 0 [pid 726] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 7 [pid 726] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 726] ioctl(7, LOOP_CLR_FD) = 0 [pid 733] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 733] setpgid(0, 0) = 0 [pid 733] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 729] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 729] close(7) = 0 [pid 729] close(6) = 0 [pid 729] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 727] <... futex resumed>) = 0 ./strace-static-x86_64: Process 731 attached [pid 729] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 727] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 729] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 727] <... futex resumed>) = 0 [pid 726] ioctl(7, LOOP_SET_FD, 6 [pid 729] mknod(0x20000000, 000 [pid 727] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 726] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 731] set_robust_list(0x7fe6f87d19a0, 24 [pid 729] <... mknod resumed>) = -1 EEXIST (File exists) [pid 726] close(7 [pid 729] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 727] <... futex resumed>) = 0 [pid 726] <... close resumed>) = 0 [pid 729] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 727] exit_group(0 [pid 731] <... set_robust_list resumed>) = 0 [pid 729] <... futex resumed>) = ? [pid 727] <... exit_group resumed>) = ? [pid 726] close(6 [pid 731] rt_sigprocmask(SIG_SETMASK, [], [pid 729] +++ exited with 0 +++ [pid 727] +++ exited with 0 +++ [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=727, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 733] <... openat resumed>) = 3 [pid 731] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 726] <... close resumed>) = 0 [pid 733] write(3, "1000", 4 [pid 726] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 733] <... write resumed>) = 4 [pid 726] <... futex resumed>) = 1 [pid 724] <... futex resumed>) = 0 [pid 731] memfd_create("syzkaller", 0 [pid 726] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 724] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 726] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 724] <... futex resumed>) = 0 [pid 726] mknod(0x20000000, 000 [pid 731] <... memfd_create resumed>) = 3 [pid 724] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 726] <... mknod resumed>) = -1 EEXIST (File exists) [pid 731] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 726] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 733] close(3 executing program [pid 726] <... futex resumed>) = 1 [pid 724] <... futex resumed>) = 0 [pid 731] <... mmap resumed>) = 0x7fe6f03b1000 [pid 726] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 724] exit_group(0 [pid 733] <... close resumed>) = 0 [pid 726] <... futex resumed>) = ? [pid 724] <... exit_group resumed>) = ? [pid 733] write(1, "executing program\n", 18 [pid 726] +++ exited with 0 +++ [pid 733] <... write resumed>) = 18 ./strace-static-x86_64: Process 732 attached [pid 733] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 732] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 733] <... futex resumed>) = 0 [pid 732] rt_sigprocmask(SIG_SETMASK, [], [pid 733] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 732] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 733] <... rt_sigaction resumed>NULL, 8) = 0 [pid 732] memfd_create("syzkaller", 0 [pid 724] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=724, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 733] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 733] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 733] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 732] <... memfd_create resumed>) = 3 [pid 733] rt_sigprocmask(SIG_BLOCK, ~[], [pid 732] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 306] <... restart_syscall resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 731] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 306] <... openat resumed>) = 3 [pid 303] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 303] ioctl(3, LOOP_CLR_FD [pid 733] <... rt_sigprocmask resumed>[], 8) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 733] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 306] close(3 [pid 303] close(3 [pid 306] <... close resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 733] <... clone3 resumed> => {parent_tid=[734]}, 88) = 734 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 733] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 735 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 736 [pid 733] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 732] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 733] <... futex resumed>) = 0 [pid 733] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 732] <... write resumed>) = 262144 [pid 732] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 732] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 732] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 732] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 735 attached [pid 731] <... write resumed>) = 262144 [pid 735] set_robust_list(0x5555636e06a0, 24) = 0 [pid 735] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 736 attached [pid 731] munmap(0x7fe6f03b1000, 138412032 [pid 735] <... prctl resumed>) = 0 [pid 735] setpgid(0, 0) = 0 [pid 735] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 736] set_robust_list(0x5555636e06a0, 24 [pid 735] <... openat resumed>) = 3 [pid 731] <... munmap resumed>) = 0 [pid 732] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 732] close(4) = 0 [pid 732] close(3 [pid 736] <... set_robust_list resumed>) = 0 [pid 732] <... close resumed>) = 0 [pid 731] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 732] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 730] <... futex resumed>) = 0 [pid 730] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 730] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 732] <... futex resumed>) = 1 [pid 732] chdir("./file0") = -1 ENOTDIR (Not a directory) ./strace-static-x86_64: Process 734 attached [pid 736] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 731] <... openat resumed>) = 4 [pid 732] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 730] <... futex resumed>) = 0 [pid 730] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 730] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 731] ioctl(4, LOOP_SET_FD, 3 [pid 732] <... futex resumed>) = 1 [pid 735] write(3, "1000", 4 [pid 732] creat("./bus", 000 [pid 735] <... write resumed>) = 4 [pid 736] <... prctl resumed>) = 0 [pid 734] set_robust_list(0x7fe6f87d19a0, 24 [pid 732] <... creat resumed>) = 3 [pid 731] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 735] close(3) = 0 [pid 735] write(1, "executing program\n", 18executing program ) = 18 [pid 735] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 731] ioctl(4, LOOP_CLR_FD [pid 736] setpgid(0, 0 [pid 732] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 730] <... futex resumed>) = 0 [pid 730] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 730] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 732] <... futex resumed>) = 1 [pid 732] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 735] <... futex resumed>) = 0 [pid 736] <... setpgid resumed>) = 0 [pid 734] <... set_robust_list resumed>) = 0 [pid 732] <... openat resumed>) = 4 [pid 731] <... ioctl resumed>) = 0 [pid 735] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 735] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 736] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 735] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 734] rt_sigprocmask(SIG_SETMASK, [], [pid 735] <... mmap resumed>) = 0x7fe6f87b1000 [pid 732] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 735] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 732] <... futex resumed>) = 1 [pid 730] <... futex resumed>) = 0 [pid 735] <... mprotect resumed>) = 0 [pid 732] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 730] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 736] <... openat resumed>) = 3 [pid 735] rt_sigprocmask(SIG_BLOCK, ~[], [pid 734] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 732] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 730] <... futex resumed>) = 0 [pid 736] write(3, "1000", 4 [pid 735] <... rt_sigprocmask resumed>[], 8) = 0 [pid 732] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 731] ioctl(4, LOOP_SET_FD, 3 [pid 730] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 736] <... write resumed>) = 4 [pid 735] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 734] memfd_create("syzkaller", 0 [pid 732] <... futex resumed>) = 0 [pid 731] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 730] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 736] close(3 [pid 734] <... memfd_create resumed>) = 3 [pid 732] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 731] close(4 [pid 730] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 736] <... close resumed>) = 0 [pid 735] <... clone3 resumed> => {parent_tid=[737]}, 88) = 737 [pid 734] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 732] <... open resumed>) = 5 [pid 731] <... close resumed>) = 0 [pid 730] <... futex resumed>) = 0 executing program [pid 736] write(1, "executing program\n", 18 [pid 735] rt_sigprocmask(SIG_SETMASK, [], [pid 734] <... mmap resumed>) = 0x7fe6f03b1000 [pid 732] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 731] close(3 [pid 730] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 736] <... write resumed>) = 18 [pid 735] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 732] <... futex resumed>) = 0 [pid 730] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 735] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 732] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 730] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 735] <... futex resumed>) = 0 [pid 732] <... mmap resumed>) = 0x20000000 [pid 730] <... futex resumed>) = 0 [pid 735] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 732] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 730] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 736] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 732] <... futex resumed>) = 0 [pid 731] <... close resumed>) = 0 [pid 730] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 732] memfd_create("syzkaller", 0 [pid 730] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 732] <... memfd_create resumed>) = 6 [pid 730] <... futex resumed>) = 0 [pid 732] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 730] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 732] <... mmap resumed>) = 0x7fe6f03b1000 [pid 736] <... futex resumed>) = 0 [pid 734] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 732] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 731] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 736] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 731] <... futex resumed>) = 1 [pid 736] <... rt_sigaction resumed>NULL, 8) = 0 [pid 731] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 728] <... futex resumed>) = 0 [pid 736] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 728] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 731] <... futex resumed>) = 0 [pid 728] <... futex resumed>) = 1 [pid 736] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 731] chdir("./file0" [pid 728] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 736] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 731] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 736] <... mmap resumed>) = 0x7fe6f87b1000 [pid 731] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 736] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 731] <... futex resumed>) = 1 [pid 728] <... futex resumed>) = 0 [pid 736] <... mprotect resumed>) = 0 [pid 731] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 736] rt_sigprocmask(SIG_BLOCK, ~[], [pid 732] <... write resumed>) = 131072 [pid 731] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 728] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 736] <... rt_sigprocmask resumed>[], 8) = 0 [pid 731] creat("./bus", 000 [pid 728] <... futex resumed>) = 0 [pid 736] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 732] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 731] <... creat resumed>) = 3 [pid 728] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 736] <... clone3 resumed> => {parent_tid=[738]}, 88) = 738 [pid 731] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 728] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 736] rt_sigprocmask(SIG_SETMASK, [], [pid 731] <... futex resumed>) = 0 [pid 728] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 736] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 731] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 728] <... futex resumed>) = 0 [pid 736] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 732] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 736] <... futex resumed>) = 0 [pid 732] <... openat resumed>) = 7 [pid 731] <... openat resumed>) = 4 [pid 728] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 736] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 731] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 728] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 734] <... write resumed>) = 262144 [pid 731] <... futex resumed>) = 0 [pid 728] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 734] munmap(0x7fe6f03b1000, 138412032 [pid 731] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 728] <... futex resumed>) = 0 [pid 732] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 728] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 731] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 732] ioctl(7, LOOP_CLR_FD [pid 731] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 732] <... ioctl resumed>) = 0 [pid 731] <... futex resumed>) = 1 [pid 728] <... futex resumed>) = 0 [pid 734] <... munmap resumed>) = 0 [pid 731] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 728] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 731] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 734] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 728] <... futex resumed>) = 0 [pid 731] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 728] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 734] <... openat resumed>) = 4 ./strace-static-x86_64: Process 738 attached ./strace-static-x86_64: Process 737 attached [pid 731] <... open resumed>) = 5 [pid 738] set_robust_list(0x7fe6f87d19a0, 24 [pid 737] set_robust_list(0x7fe6f87d19a0, 24 [pid 738] <... set_robust_list resumed>) = 0 [pid 737] <... set_robust_list resumed>) = 0 [pid 738] rt_sigprocmask(SIG_SETMASK, [], [pid 737] rt_sigprocmask(SIG_SETMASK, [], [pid 738] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 737] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 732] ioctl(7, LOOP_SET_FD, 6 [pid 738] memfd_create("syzkaller", 0 [pid 737] memfd_create("syzkaller", 0 [pid 732] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 738] <... memfd_create resumed>) = 3 [pid 737] <... memfd_create resumed>) = 3 [pid 738] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 737] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 738] <... mmap resumed>) = 0x7fe6f03b1000 [pid 737] <... mmap resumed>) = 0x7fe6f03b1000 [pid 732] close(7) = 0 [pid 732] close(6) = 0 [pid 732] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 732] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 731] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 728] <... futex resumed>) = 0 [pid 728] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 728] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 731] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 731] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 728] <... futex resumed>) = 0 [pid 728] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 728] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 731] memfd_create("syzkaller", 0) = 6 [pid 731] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 738] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 730] <... futex resumed>) = 0 [pid 731] <... mmap resumed>) = 0x7fe6f03b1000 [pid 731] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 737] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 731] <... write resumed>) = 131072 [pid 730] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 731] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 731] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 7 [pid 731] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 731] ioctl(7, LOOP_CLR_FD) = 0 [pid 734] ioctl(4, LOOP_SET_FD, 3 [pid 738] <... write resumed>) = 262144 [pid 730] <... futex resumed>) = 1 [pid 732] <... futex resumed>) = 0 [pid 732] mknod(0x20000000, 000) = -1 EEXIST (File exists) [pid 732] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 732] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 734] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 734] ioctl(4, LOOP_CLR_FD) = 0 [pid 737] <... write resumed>) = 262144 [pid 738] munmap(0x7fe6f03b1000, 138412032 [pid 730] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 737] munmap(0x7fe6f03b1000, 138412032 [pid 730] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 730] exit_group(0 [pid 732] <... futex resumed>) = ? [pid 730] <... exit_group resumed>) = ? [pid 737] <... munmap resumed>) = 0 [pid 732] +++ exited with 0 +++ [pid 731] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 731] close(7) = 0 [pid 731] close(6) = 0 [pid 730] +++ exited with 0 +++ [pid 737] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 738] <... munmap resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=730, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 738] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 737] <... openat resumed>) = 4 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 738] <... openat resumed>) = 4 [pid 737] ioctl(4, LOOP_SET_FD, 3 [pid 738] ioctl(4, LOOP_SET_FD, 3 [pid 737] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 738] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 737] ioctl(4, LOOP_CLR_FD [pid 738] ioctl(4, LOOP_CLR_FD [pid 737] <... ioctl resumed>) = 0 [pid 738] <... ioctl resumed>) = 0 [pid 731] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 728] <... futex resumed>) = 0 [pid 728] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 728] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 731] <... futex resumed>) = 1 [pid 731] mknod(0x20000000, 000) = -1 EEXIST (File exists) [pid 731] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 728] <... futex resumed>) = 0 [pid 728] exit_group(0) = ? [pid 731] <... futex resumed>) = ? [pid 731] +++ exited with 0 +++ [pid 728] +++ exited with 0 +++ [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=728, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 734] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 734] close(4) = 0 [pid 734] close(3) = 0 [pid 734] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 734] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 733] <... futex resumed>) = 0 [pid 738] ioctl(4, LOOP_SET_FD, 3 [pid 737] ioctl(4, LOOP_SET_FD, 3 [pid 733] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 737] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 733] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 738] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 737] close(4 [pid 734] <... futex resumed>) = 0 [pid 738] close(4 [pid 737] <... close resumed>) = 0 [pid 734] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 734] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 733] <... futex resumed>) = 0 [pid 737] close(3 [pid 738] <... close resumed>) = 0 [pid 733] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... restart_syscall resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 733] <... futex resumed>) = 0 [pid 734] creat("./bus", 000) = 3 [pid 737] <... close resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 733] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 738] close(3 [pid 737] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 734] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 733] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 305] <... openat resumed>) = 3 [pid 304] <... openat resumed>) = 3 [pid 734] <... futex resumed>) = 0 [pid 733] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] ioctl(3, LOOP_CLR_FD [pid 304] ioctl(3, LOOP_CLR_FD [pid 734] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 305] <... ioctl resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 738] <... close resumed>) = 0 [pid 734] <... openat resumed>) = 4 [pid 733] <... futex resumed>) = 0 [pid 305] close(3 [pid 304] close(3 [pid 735] <... futex resumed>) = 0 [pid 738] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 737] <... futex resumed>) = 1 [pid 735] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 734] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 733] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... close resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 738] <... futex resumed>) = 1 [pid 737] chdir("./file0" [pid 736] <... futex resumed>) = 0 [pid 735] <... futex resumed>) = 0 [pid 734] <... futex resumed>) = 0 [pid 733] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 738] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 737] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 736] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 735] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 734] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 733] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 738] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 737] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 736] <... futex resumed>) = 0 [pid 735] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 734] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 733] <... futex resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 739 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 740 [pid 738] chdir("./file0" [pid 737] <... futex resumed>) = 0 [pid 736] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 735] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 734] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 733] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 738] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 737] creat("./bus", 000 [pid 735] <... futex resumed>) = 0 [pid 734] <... futex resumed>) = 0 [pid 733] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 738] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 737] <... creat resumed>) = 3 [pid 736] <... futex resumed>) = 0 [pid 735] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 734] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 733] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 738] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 737] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 736] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 735] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 733] <... futex resumed>) = 0 [pid 738] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 737] <... futex resumed>) = 0 [pid 736] <... futex resumed>) = 0 [pid 735] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 734] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 733] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 738] creat("./bus", 000 [pid 737] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 736] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 735] <... futex resumed>) = 0 [pid 738] <... creat resumed>) = 3 [pid 734] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 734] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 733] <... futex resumed>) = 0 ./strace-static-x86_64: Process 739 attached [pid 738] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 737] <... openat resumed>) = 4 [pid 735] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 734] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 733] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 739] set_robust_list(0x5555636e06a0, 24 [pid 738] <... futex resumed>) = 1 [pid 737] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 736] <... futex resumed>) = 0 [pid 735] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 734] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 733] <... futex resumed>) = 0 [pid 739] <... set_robust_list resumed>) = 0 [pid 738] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 737] <... futex resumed>) = 0 [pid 736] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 735] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 734] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 733] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 739] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 738] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 737] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 736] <... futex resumed>) = 0 [pid 735] <... futex resumed>) = 0 [pid 734] <... mmap resumed>) = 0x20000000 [pid 739] <... prctl resumed>) = 0 [pid 738] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 737] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 736] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 735] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 734] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 739] setpgid(0, 0 [pid 738] <... openat resumed>) = 4 [pid 737] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 735] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 734] <... futex resumed>) = 1 [pid 733] <... futex resumed>) = 0 [pid 739] <... setpgid resumed>) = 0 [pid 738] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 737] <... futex resumed>) = 0 [pid 735] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 734] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 733] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 739] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 738] <... futex resumed>) = 1 [pid 737] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 736] <... futex resumed>) = 0 [pid 735] <... futex resumed>) = 0 [pid 734] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 733] <... futex resumed>) = 0 [pid 738] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 737] <... open resumed>) = 5 [pid 736] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 735] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 734] memfd_create("syzkaller", 0 [pid 733] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 739] <... openat resumed>) = 3 [pid 738] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 737] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 736] <... futex resumed>) = 0 [pid 735] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 734] <... memfd_create resumed>) = 6 [pid 739] write(3, "1000", 4 [pid 738] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 737] <... futex resumed>) = 0 [pid 736] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 735] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 734] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 739] <... write resumed>) = 4 [pid 738] <... futex resumed>) = 0 [pid 737] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 736] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 735] <... futex resumed>) = 0 [pid 734] <... mmap resumed>) = 0x7fe6f03b1000 ./strace-static-x86_64: Process 740 attached [pid 739] close(3 [pid 738] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 737] <... mmap resumed>) = 0x20000000 [pid 736] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 735] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 734] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072executing program [pid 740] set_robust_list(0x5555636e06a0, 24 [pid 739] <... close resumed>) = 0 [pid 738] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 737] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 736] <... futex resumed>) = 0 [pid 735] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 734] <... write resumed>) = 131072 [pid 740] <... set_robust_list resumed>) = 0 [pid 739] write(1, "executing program\n", 18 [pid 738] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 737] <... futex resumed>) = 0 [pid 736] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 735] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 734] munmap(0x7fe6f03b1000, 138412032 [pid 740] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 739] <... write resumed>) = 18 [pid 738] <... open resumed>) = 5 [pid 737] memfd_create("syzkaller", 0 [pid 735] <... futex resumed>) = 0 [pid 734] <... munmap resumed>) = 0 [pid 740] <... prctl resumed>) = 0 [pid 739] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 738] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 737] <... memfd_create resumed>) = 6 [pid 735] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 734] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 740] setpgid(0, 0 [pid 739] <... futex resumed>) = 0 [pid 738] <... futex resumed>) = 1 [pid 737] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 736] <... futex resumed>) = 0 [pid 734] <... openat resumed>) = 7 [pid 740] <... setpgid resumed>) = 0 [pid 739] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 738] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 737] <... mmap resumed>) = 0x7fe6f03b1000 [pid 736] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 734] ioctl(7, LOOP_SET_FD, 6 [pid 740] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 739] <... rt_sigaction resumed>NULL, 8) = 0 [pid 738] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 736] <... futex resumed>) = 0 [pid 734] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 740] <... openat resumed>) = 3 [pid 736] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 734] ioctl(7, LOOP_CLR_FD [pid 740] write(3, "1000", 4 [pid 734] <... ioctl resumed>) = 0 [pid 740] <... write resumed>) = 4 [pid 740] close(3) = 0 [pid 739] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 737] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 739] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 738] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0executing program [pid 740] write(1, "executing program\n", 18) = 18 [pid 740] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 737] <... write resumed>) = 131072 [pid 739] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 740] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 738] <... mmap resumed>) = 0x20000000 [pid 739] <... mmap resumed>) = 0x7fe6f87b1000 [pid 740] <... rt_sigaction resumed>NULL, 8) = 0 [pid 738] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 737] munmap(0x7fe6f03b1000, 138412032 [pid 740] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 739] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 738] <... futex resumed>) = 1 [pid 736] <... futex resumed>) = 0 [pid 734] ioctl(7, LOOP_SET_FD, 6 [pid 740] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 739] <... mprotect resumed>) = 0 [pid 738] memfd_create("syzkaller", 0 [pid 737] <... munmap resumed>) = 0 [pid 736] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 734] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 740] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 739] rt_sigprocmask(SIG_BLOCK, ~[], [pid 738] <... memfd_create resumed>) = 6 [pid 737] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 736] <... futex resumed>) = 0 [pid 734] close(7 [pid 740] <... mmap resumed>) = 0x7fe6f87b1000 [pid 739] <... rt_sigprocmask resumed>[], 8) = 0 [pid 738] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 737] <... openat resumed>) = 7 [pid 736] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 734] <... close resumed>) = 0 [pid 740] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 739] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 738] <... mmap resumed>) = 0x7fe6f03b1000 [pid 737] ioctl(7, LOOP_SET_FD, 6 [pid 734] close(6 [pid 740] <... mprotect resumed>) = 0 [pid 734] <... close resumed>) = 0 [pid 740] rt_sigprocmask(SIG_BLOCK, ~[], [pid 734] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 740] <... rt_sigprocmask resumed>[], 8) = 0 [pid 734] <... futex resumed>) = 1 [pid 733] <... futex resumed>) = 0 [pid 740] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 734] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 733] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 734] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 733] <... futex resumed>) = 0 [pid 740] <... clone3 resumed> => {parent_tid=[741]}, 88) = 741 [pid 734] mknod(0x20000000, 000 [pid 733] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 740] rt_sigprocmask(SIG_SETMASK, [], [pid 734] <... mknod resumed>) = -1 EEXIST (File exists) [pid 740] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 734] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 740] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 734] <... futex resumed>) = 1 [pid 733] <... futex resumed>) = 0 [pid 740] <... futex resumed>) = 0 [pid 734] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 733] exit_group(0 [pid 740] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 734] <... futex resumed>) = ? [pid 733] <... exit_group resumed>) = ? [pid 734] +++ exited with 0 +++ [pid 733] +++ exited with 0 +++ [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=733, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 302] ioctl(3, LOOP_CLR_FD) = 0 [pid 302] close(3 [pid 739] <... clone3 resumed> => {parent_tid=[742]}, 88) = 742 [pid 738] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 737] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 302] <... close resumed>) = 0 [pid 739] rt_sigprocmask(SIG_SETMASK, [], [pid 737] ioctl(7, LOOP_CLR_FD [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 738] <... write resumed>) = 131072 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 743 [pid 739] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 738] munmap(0x7fe6f03b1000, 138412032 [pid 737] <... ioctl resumed>) = 0 [pid 739] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 738] <... munmap resumed>) = 0 [pid 739] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 738] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 7 ./strace-static-x86_64: Process 741 attached [pid 741] set_robust_list(0x7fe6f87d19a0, 24 [pid 738] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 738] ioctl(7, LOOP_CLR_FD [pid 741] <... set_robust_list resumed>) = 0 [pid 738] <... ioctl resumed>) = 0 [pid 737] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 737] close(7) = 0 [pid 737] close(6) = 0 [pid 737] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 735] <... futex resumed>) = 0 [pid 738] ioctl(7, LOOP_SET_FD, 6 [pid 737] mknod(0x20000000, 000 [pid 735] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 738] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 737] <... mknod resumed>) = -1 EEXIST (File exists) [pid 738] close(7 [pid 737] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 735] <... futex resumed>) = 0 [pid 738] <... close resumed>) = 0 [pid 737] <... futex resumed>) = 0 [pid 735] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 738] close(6 [pid 737] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 735] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 741] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 741] memfd_create("syzkaller", 0 [pid 738] <... close resumed>) = 0 [pid 735] exit_group(0 [pid 738] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 737] <... futex resumed>) = ? [pid 735] <... exit_group resumed>) = ? [pid 738] <... futex resumed>) = 1 [pid 736] <... futex resumed>) = 0 [pid 737] +++ exited with 0 +++ [pid 736] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 736] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 741] <... memfd_create resumed>) = 3 [pid 741] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 741] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 738] mknod(0x20000000, 000 [pid 735] +++ exited with 0 +++ ./strace-static-x86_64: Process 742 attached [pid 738] <... mknod resumed>) = -1 EEXIST (File exists) [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=735, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 742] set_robust_list(0x7fe6f87d19a0, 24 [pid 738] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 742] <... set_robust_list resumed>) = 0 [pid 738] <... futex resumed>) = 1 [pid 736] <... futex resumed>) = 0 [pid 742] rt_sigprocmask(SIG_SETMASK, [], [pid 738] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 736] exit_group(0 [pid 742] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 738] <... futex resumed>) = ? [pid 736] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 743 attached [pid 738] +++ exited with 0 +++ [pid 743] set_robust_list(0x5555636e06a0, 24) = 0 [pid 743] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 736] +++ exited with 0 +++ [pid 743] setpgid(0, 0) = 0 [pid 743] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 742] memfd_create("syzkaller", 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=736, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 743] <... openat resumed>) = 3 [pid 742] <... memfd_create resumed>) = 3 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 743] write(3, "1000", 4 [pid 742] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 743] <... write resumed>) = 4 [pid 743] close(3executing program ) = 0 [pid 743] write(1, "executing program\n", 18) = 18 [pid 743] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 743] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 743] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 743] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 306] <... openat resumed>) = 3 [pid 743] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 743] <... mmap resumed>) = 0x7fe6f87b1000 [pid 306] <... ioctl resumed>) = 0 [pid 743] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 306] close(3 [pid 743] <... mprotect resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 743] rt_sigprocmask(SIG_BLOCK, ~[], [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 743] <... rt_sigprocmask resumed>[], 8) = 0 [pid 742] <... mmap resumed>) = 0x7fe6f03b1000 [pid 303] <... restart_syscall resumed>) = 0 [pid 743] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 744 [pid 741] <... write resumed>) = 262144 [pid 743] <... clone3 resumed> => {parent_tid=[745]}, 88) = 745 [pid 743] rt_sigprocmask(SIG_SETMASK, [], [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 743] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 742] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 743] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 741] munmap(0x7fe6f03b1000, 138412032 [pid 303] <... openat resumed>) = 3 [pid 743] <... futex resumed>) = 0 [pid 741] <... munmap resumed>) = 0 [pid 303] ioctl(3, LOOP_CLR_FD [pid 743] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 741] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 303] <... ioctl resumed>) = 0 [pid 741] <... openat resumed>) = 4 [pid 303] close(3 [pid 741] ioctl(4, LOOP_SET_FD, 3 [pid 303] <... close resumed>) = 0 [pid 741] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 741] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 745 attached [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 746 [pid 742] <... write resumed>) = 262144 [pid 742] munmap(0x7fe6f03b1000, 138412032 [pid 745] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 745] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 745] memfd_create("syzkaller", 0 [pid 741] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 741] close(4) = 0 [pid 741] close(3) = 0 [pid 741] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 740] <... futex resumed>) = 0 [pid 741] chdir("./file0" [pid 740] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 741] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 740] <... futex resumed>) = 0 [pid 741] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 740] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 741] <... futex resumed>) = 0 [pid 740] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 741] creat("./bus", 000 [pid 740] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 741] <... creat resumed>) = 3 [pid 740] <... futex resumed>) = 0 [pid 741] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 740] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 741] <... futex resumed>) = 0 [pid 740] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 741] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 740] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 741] <... openat resumed>) = 4 [pid 740] <... futex resumed>) = 0 [pid 741] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 740] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 741] <... futex resumed>) = 0 [pid 740] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 741] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 740] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 741] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 740] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 741] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 740] <... futex resumed>) = 0 [pid 741] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 740] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 741] <... open resumed>) = 5 [pid 740] <... futex resumed>) = 0 [pid 741] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 740] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 745] <... memfd_create resumed>) = 3 [pid 741] <... futex resumed>) = 0 [pid 740] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 745] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 741] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 740] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 745] <... mmap resumed>) = 0x7fe6f03b1000 [pid 741] <... mmap resumed>) = 0x20000000 [pid 740] <... futex resumed>) = 0 [pid 745] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 741] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 740] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 741] <... futex resumed>) = 0 [pid 740] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 741] memfd_create("syzkaller", 0 [pid 740] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 741] <... memfd_create resumed>) = 6 [pid 740] <... futex resumed>) = 0 [pid 741] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 740] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 741] <... mmap resumed>) = 0x7fe6f03b1000 [pid 741] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072./strace-static-x86_64: Process 744 attached [pid 742] <... munmap resumed>) = 0 [pid 741] <... write resumed>) = 131072 [pid 744] set_robust_list(0x5555636e06a0, 24 [pid 742] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 744] <... set_robust_list resumed>) = 0 [pid 742] <... openat resumed>) = 4 [pid 741] munmap(0x7fe6f03b1000, 138412032 [pid 744] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 742] ioctl(4, LOOP_SET_FD, 3 [pid 741] <... munmap resumed>) = 0 [pid 744] <... prctl resumed>) = 0 [pid 744] setpgid(0, 0 [pid 742] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 741] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 744] <... setpgid resumed>) = 0 [pid 742] ioctl(4, LOOP_CLR_FD [pid 744] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 742] <... ioctl resumed>) = 0 [pid 741] <... openat resumed>) = 7 [pid 745] <... write resumed>) = 262144 [pid 744] <... openat resumed>) = 3 [pid 741] ioctl(7, LOOP_SET_FD, 6 [pid 744] write(3, "1000", 4) = 4 [pid 741] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 744] close(3) = 0 [pid 742] ioctl(4, LOOP_SET_FD, 3 [pid 741] ioctl(7, LOOP_CLR_FD [pid 744] write(1, "executing program\n", 18 [pid 742] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) executing program [pid 744] <... write resumed>) = 18 [pid 742] close(4 [pid 741] <... ioctl resumed>) = 0 [pid 744] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 742] <... close resumed>) = 0 [pid 744] <... futex resumed>) = 0 [pid 742] close(3 [pid 744] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 745] munmap(0x7fe6f03b1000, 138412032) = 0 ./strace-static-x86_64: Process 746 attached [pid 744] <... rt_sigaction resumed>NULL, 8) = 0 [pid 742] <... close resumed>) = 0 [pid 744] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 742] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 744] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 742] <... futex resumed>) = 1 [pid 744] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 742] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 739] <... futex resumed>) = 0 [pid 744] <... mmap resumed>) = 0x7fe6f87b1000 [pid 739] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 744] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 742] <... futex resumed>) = 0 [pid 739] <... futex resumed>) = 1 [pid 744] <... mprotect resumed>) = 0 [pid 742] chdir("./file0" [pid 739] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 746] set_robust_list(0x5555636e06a0, 24 [pid 745] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 744] rt_sigprocmask(SIG_BLOCK, ~[], [pid 742] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 744] <... rt_sigprocmask resumed>[], 8) = 0 [pid 742] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 744] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 742] <... futex resumed>) = 1 [pid 739] <... futex resumed>) = 0 [pid 746] <... set_robust_list resumed>) = 0 [pid 745] <... openat resumed>) = 4 [pid 742] creat("./bus", 000 [pid 741] ioctl(7, LOOP_SET_FD, 6 [pid 739] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 744] <... clone3 resumed> => {parent_tid=[747]}, 88) = 747 [pid 746] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 745] ioctl(4, LOOP_SET_FD, 3 [pid 744] rt_sigprocmask(SIG_SETMASK, [], [pid 742] <... creat resumed>) = 3 [pid 741] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 739] <... futex resumed>) = 0 [pid 746] <... prctl resumed>) = 0 [pid 745] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 744] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 742] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 741] close(7 [pid 739] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 746] setpgid(0, 0 [pid 745] ioctl(4, LOOP_CLR_FD [pid 744] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 742] <... futex resumed>) = 0 [pid 741] <... close resumed>) = 0 [pid 739] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 746] <... setpgid resumed>) = 0 [pid 745] <... ioctl resumed>) = 0 [pid 744] <... futex resumed>) = 0 [pid 742] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 741] close(6 [pid 739] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 746] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 744] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 742] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 741] <... close resumed>) = 0 [pid 739] <... futex resumed>) = 0 [pid 746] <... openat resumed>) = 3 [pid 742] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 741] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 739] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 746] write(3, "1000", 4 [pid 742] <... openat resumed>) = 4 [pid 741] <... futex resumed>) = 1 [pid 740] <... futex resumed>) = 0 [pid 746] <... write resumed>) = 4 [pid 742] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 741] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 740] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 746] close(3 [pid 742] <... futex resumed>) = 1 [pid 741] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 740] <... futex resumed>) = 0 [pid 739] <... futex resumed>) = 0 ./strace-static-x86_64: Process 747 attached [pid 746] <... close resumed>) = 0 [pid 745] ioctl(4, LOOP_SET_FD, 3 [pid 742] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 741] mknod(0x20000000, 000 [pid 740] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}executing program [pid 747] set_robust_list(0x7fe6f87d19a0, 24 [pid 746] write(1, "executing program\n", 18 [pid 745] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 742] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 741] <... mknod resumed>) = -1 EEXIST (File exists) [pid 739] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 747] <... set_robust_list resumed>) = 0 [pid 746] <... write resumed>) = 18 [pid 745] close(4 [pid 742] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 741] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 739] <... futex resumed>) = 0 [pid 746] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 745] <... close resumed>) = 0 [pid 741] <... futex resumed>) = 1 [pid 740] <... futex resumed>) = 0 [pid 746] <... futex resumed>) = 0 [pid 745] close(3 [pid 741] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 740] exit_group(0 [pid 746] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 745] <... close resumed>) = 0 [pid 741] <... futex resumed>) = ? [pid 740] <... exit_group resumed>) = ? [pid 746] <... rt_sigaction resumed>NULL, 8) = 0 [pid 745] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 741] +++ exited with 0 +++ [pid 740] +++ exited with 0 +++ [pid 746] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 745] <... futex resumed>) = 1 [pid 743] <... futex resumed>) = 0 [pid 746] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 745] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 743] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=740, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 746] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 745] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 743] <... futex resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 747] rt_sigprocmask(SIG_SETMASK, [], [pid 746] <... mmap resumed>) = 0x7fe6f87b1000 [pid 745] chdir("./file0" [pid 743] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 742] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 739] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... openat resumed>) = 3 [pid 747] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 746] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 745] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 742] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 739] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 304] ioctl(3, LOOP_CLR_FD [pid 747] memfd_create("syzkaller", 0 [pid 746] <... mprotect resumed>) = 0 [pid 745] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 742] <... futex resumed>) = 0 [pid 739] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... ioctl resumed>) = 0 [pid 747] <... memfd_create resumed>) = 3 [pid 746] rt_sigprocmask(SIG_BLOCK, ~[], [pid 745] <... futex resumed>) = 1 [pid 743] <... futex resumed>) = 0 [pid 742] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 739] <... futex resumed>) = 0 [pid 304] close(3 [pid 747] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 746] <... rt_sigprocmask resumed>[], 8) = 0 [pid 745] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 743] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 742] <... open resumed>) = 5 [pid 739] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... close resumed>) = 0 [pid 747] <... mmap resumed>) = 0x7fe6f03b1000 [pid 746] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 745] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 743] <... futex resumed>) = 0 [pid 742] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 739] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 745] creat("./bus", 000 [pid 743] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 742] <... futex resumed>) = 0 [pid 739] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 746] <... clone3 resumed> => {parent_tid=[748]}, 88) = 748 [pid 745] <... creat resumed>) = 3 [pid 742] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 739] <... futex resumed>) = 0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 749 [pid 746] rt_sigprocmask(SIG_SETMASK, [], [pid 745] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 746] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 745] <... futex resumed>) = 1 [pid 743] <... futex resumed>) = 0 [pid 742] <... mmap resumed>) = 0x20000000 [pid 739] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 746] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 745] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 743] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 742] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 739] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 747] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 746] <... futex resumed>) = 0 [pid 745] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 743] <... futex resumed>) = 0 [pid 746] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 745] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 743] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 742] <... futex resumed>) = 0 [pid 739] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 745] <... openat resumed>) = 4 [pid 745] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 742] memfd_create("syzkaller", 0 [pid 739] <... futex resumed>) = 0 [pid 745] <... futex resumed>) = 1 [pid 743] <... futex resumed>) = 0 [pid 747] <... write resumed>) = 262144 [pid 745] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 743] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 742] <... memfd_create resumed>) = 6 [pid 739] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 747] munmap(0x7fe6f03b1000, 138412032 [pid 745] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 743] <... futex resumed>) = 0 [pid 742] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 745] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 743] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 747] <... munmap resumed>) = 0 [pid 745] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 742] <... mmap resumed>) = 0x7fe6f03b1000 [pid 745] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 743] <... futex resumed>) = 0 [pid 745] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 743] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 745] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 743] <... futex resumed>) = 0 [pid 745] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 743] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 745] <... open resumed>) = 5 [pid 745] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 743] <... futex resumed>) = 0 [pid 745] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 743] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 745] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 743] <... futex resumed>) = 0 [pid 745] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 743] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 747] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 745] <... mmap resumed>) = 0x20000000 [pid 742] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 747] <... openat resumed>) = 4 [pid 745] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 743] <... futex resumed>) = 0 [pid 745] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 743] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 745] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 743] <... futex resumed>) = 0 [pid 747] ioctl(4, LOOP_SET_FD, 3 [pid 745] memfd_create("syzkaller", 0 [pid 743] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 742] <... write resumed>) = 131072 ./strace-static-x86_64: Process 749 attached [pid 747] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 745] <... memfd_create resumed>) = 6 [pid 749] set_robust_list(0x5555636e06a0, 24 [pid 747] ioctl(4, LOOP_CLR_FD [pid 745] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 742] munmap(0x7fe6f03b1000, 138412032 [pid 749] <... set_robust_list resumed>) = 0 [pid 747] <... ioctl resumed>) = 0 [pid 745] <... mmap resumed>) = 0x7fe6f03b1000 [pid 749] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 745] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 742] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 748 attached [pid 749] <... prctl resumed>) = 0 [pid 745] <... write resumed>) = 131072 [pid 742] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 749] setpgid(0, 0 [pid 748] set_robust_list(0x7fe6f87d19a0, 24 [pid 745] munmap(0x7fe6f03b1000, 138412032 [pid 742] <... openat resumed>) = 7 [pid 749] <... setpgid resumed>) = 0 [pid 748] <... set_robust_list resumed>) = 0 [pid 745] <... munmap resumed>) = 0 [pid 742] ioctl(7, LOOP_SET_FD, 6 [pid 749] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 748] rt_sigprocmask(SIG_SETMASK, [], [pid 747] ioctl(4, LOOP_SET_FD, 3 [pid 745] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 742] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 749] <... openat resumed>) = 3 [pid 748] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 747] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 745] <... openat resumed>) = 7 [pid 742] ioctl(7, LOOP_CLR_FD [pid 749] write(3, "1000", 4 [pid 748] memfd_create("syzkaller", 0 [pid 747] close(4 [pid 745] ioctl(7, LOOP_SET_FD, 6 [pid 742] <... ioctl resumed>) = 0 [pid 749] <... write resumed>) = 4 [pid 748] <... memfd_create resumed>) = 3 [pid 747] <... close resumed>) = 0 [pid 745] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 749] close(3 [pid 748] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 747] close(3 [pid 745] ioctl(7, LOOP_CLR_FD [pid 749] <... close resumed>) = 0 [pid 748] <... mmap resumed>) = 0x7fe6f03b1000 [pid 745] <... ioctl resumed>) = 0 executing program [pid 749] write(1, "executing program\n", 18 [pid 748] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 747] <... close resumed>) = 0 [pid 749] <... write resumed>) = 18 [pid 749] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 749] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 749] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 749] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 749] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 749] rt_sigprocmask(SIG_BLOCK, ~[], [pid 745] ioctl(7, LOOP_SET_FD, 6 [pid 749] <... rt_sigprocmask resumed>[], 8) = 0 [pid 745] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 749] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 745] close(7 [pid 748] <... write resumed>) = 262144 [pid 745] <... close resumed>) = 0 [pid 749] <... clone3 resumed> => {parent_tid=[750]}, 88) = 750 [pid 745] close(6 [pid 749] rt_sigprocmask(SIG_SETMASK, [], [pid 745] <... close resumed>) = 0 [pid 749] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 747] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 745] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 742] ioctl(7, LOOP_SET_FD, 6 [pid 749] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 747] <... futex resumed>) = 1 [pid 745] <... futex resumed>) = 1 [pid 744] <... futex resumed>) = 0 [pid 743] <... futex resumed>) = 0 [pid 742] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 749] <... futex resumed>) = 0 [pid 747] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 745] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 744] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 743] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 742] close(7 [pid 749] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 747] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 745] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 744] <... futex resumed>) = 0 [pid 743] <... futex resumed>) = 0 [pid 748] munmap(0x7fe6f03b1000, 138412032 [pid 747] chdir("./file0" [pid 745] mknod(0x20000000, 000 [pid 743] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 742] <... close resumed>) = 0 [pid 748] <... munmap resumed>) = 0 [pid 747] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 745] <... mknod resumed>) = -1 EEXIST (File exists) [pid 744] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 742] close(6 [pid 748] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 747] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 745] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 744] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 748] <... openat resumed>) = 4 [pid 747] <... futex resumed>) = 0 [pid 745] <... futex resumed>) = 1 [pid 744] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 743] <... futex resumed>) = 0 [pid 742] <... close resumed>) = 0 [pid 748] ioctl(4, LOOP_SET_FD, 3 [pid 747] creat("./bus", 000 [pid 745] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 744] <... futex resumed>) = 0 [pid 743] exit_group(0 [pid 748] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 747] <... creat resumed>) = 3 [pid 745] <... futex resumed>) = ? [pid 744] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 743] <... exit_group resumed>) = ? [pid 742] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 750 attached [pid 748] ioctl(4, LOOP_CLR_FD [pid 747] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 745] +++ exited with 0 +++ [pid 744] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 743] +++ exited with 0 +++ [pid 742] <... futex resumed>) = 1 [pid 739] <... futex resumed>) = 0 [pid 750] set_robust_list(0x7fe6f87d19a0, 24 [pid 748] <... ioctl resumed>) = 0 [pid 747] <... futex resumed>) = 0 [pid 744] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 742] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 739] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 750] <... set_robust_list resumed>) = 0 [pid 747] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 744] <... futex resumed>) = 0 [pid 742] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 739] <... futex resumed>) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=743, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 750] rt_sigprocmask(SIG_SETMASK, [], [pid 747] <... openat resumed>) = 4 [pid 744] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 742] mknod(0x20000000, 000 [pid 739] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 750] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 747] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 744] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 742] <... mknod resumed>) = -1 EEXIST (File exists) [pid 747] <... futex resumed>) = 0 [pid 744] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 742] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 747] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 744] <... futex resumed>) = 0 [pid 742] <... futex resumed>) = 1 [pid 739] <... futex resumed>) = 0 [pid 747] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 744] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 742] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 739] exit_group(0 [pid 750] memfd_create("syzkaller", 0 [pid 747] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 744] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 739] <... exit_group resumed>) = ? [pid 744] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 742] <... futex resumed>) = ? [pid 744] <... futex resumed>) = 0 [pid 748] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 748] close(4) = 0 [pid 742] +++ exited with 0 +++ [pid 744] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 739] +++ exited with 0 +++ [pid 747] <... futex resumed>) = 0 [pid 750] <... memfd_create resumed>) = 3 [pid 748] close(3 [pid 747] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=739, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 748] <... close resumed>) = 0 [pid 747] <... open resumed>) = 5 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 750] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 748] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 747] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 750] <... mmap resumed>) = 0x7fe6f03b1000 [pid 748] <... futex resumed>) = 1 [pid 746] <... futex resumed>) = 0 [pid 748] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 747] <... futex resumed>) = 1 [pid 746] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 744] <... futex resumed>) = 0 [pid 748] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 747] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 746] <... futex resumed>) = 0 [pid 748] chdir("./file0" [pid 747] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 746] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 744] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 748] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 747] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 744] <... futex resumed>) = 0 [pid 748] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 746] <... futex resumed>) = 0 [pid 748] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 747] <... mmap resumed>) = 0x20000000 [pid 746] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 744] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 748] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 747] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 746] <... futex resumed>) = 0 [pid 748] creat("./bus", 000 [pid 747] <... futex resumed>) = 0 [pid 746] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 744] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 748] <... creat resumed>) = 3 [pid 747] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 744] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 750] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 748] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 747] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 744] <... futex resumed>) = 0 [pid 748] <... futex resumed>) = 1 [pid 746] <... futex resumed>) = 0 [pid 748] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 747] memfd_create("syzkaller", 0 [pid 746] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 744] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 748] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 747] <... memfd_create resumed>) = 6 [pid 746] <... futex resumed>) = 0 [pid 748] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 747] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 746] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 748] <... openat resumed>) = 4 [pid 747] <... mmap resumed>) = 0x7fe6f03b1000 [pid 750] <... write resumed>) = 262144 [pid 748] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 746] <... futex resumed>) = 0 [pid 748] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 746] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 748] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 746] <... futex resumed>) = 0 [pid 748] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 746] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 748] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 748] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 746] <... futex resumed>) = 0 [pid 748] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 746] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 748] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 746] <... futex resumed>) = 0 [pid 750] munmap(0x7fe6f03b1000, 138412032 [pid 748] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 747] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 746] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 748] <... open resumed>) = 5 [pid 748] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 746] <... futex resumed>) = 0 [pid 748] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 746] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... restart_syscall resumed>) = 0 [pid 750] <... munmap resumed>) = 0 [pid 748] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 747] <... write resumed>) = 131072 [pid 746] <... futex resumed>) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 750] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 748] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 747] munmap(0x7fe6f03b1000, 138412032 [pid 746] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 750] <... openat resumed>) = 4 [pid 748] <... mmap resumed>) = 0x20000000 [pid 747] <... munmap resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 750] ioctl(4, LOOP_SET_FD, 3 [pid 748] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 747] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 305] <... openat resumed>) = 3 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 750] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 748] <... futex resumed>) = 1 [pid 747] <... openat resumed>) = 7 [pid 746] <... futex resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 302] <... openat resumed>) = 3 [pid 748] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 746] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... ioctl resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 748] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 746] <... futex resumed>) = 0 [pid 305] close(3 [pid 302] <... ioctl resumed>) = 0 [pid 748] memfd_create("syzkaller", 0 [pid 746] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 305] <... close resumed>) = 0 [pid 302] close(3 [pid 748] <... memfd_create resumed>) = 6 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 302] <... close resumed>) = 0 [pid 748] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 748] <... mmap resumed>) = 0x7fe6f03b1000 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 751 [pid 748] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 752 [pid 750] ioctl(4, LOOP_CLR_FD [pid 748] <... write resumed>) = 131072 [pid 747] ioctl(7, LOOP_SET_FD, 6 [pid 748] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 748] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 750] <... ioctl resumed>) = 0 [pid 748] <... openat resumed>) = 7 [pid 747] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 748] ioctl(7, LOOP_SET_FD, 6 [pid 747] ioctl(7, LOOP_CLR_FD [pid 748] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 748] ioctl(7, LOOP_CLR_FD [pid 747] <... ioctl resumed>) = 0 [pid 748] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 751 attached [pid 751] set_robust_list(0x5555636e06a0, 24) = 0 [pid 751] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 750] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 750] close(4 [pid 748] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 748] close(7 [pid 750] <... close resumed>) = 0 [pid 748] <... close resumed>) = 0 [pid 747] ioctl(7, LOOP_SET_FD, 6 [pid 750] close(3 [pid 748] close(6) = 0 [pid 747] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 748] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 747] close(7 [pid 750] <... close resumed>) = 0 [pid 748] <... futex resumed>) = 1 [pid 746] <... futex resumed>) = 0 [pid 750] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 748] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 747] <... close resumed>) = 0 [pid 746] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 750] <... futex resumed>) = 1 [pid 749] <... futex resumed>) = 0 [pid 748] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 747] close(6 [pid 746] <... futex resumed>) = 0 [pid 750] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 749] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 748] mknod(0x20000000, 000 [pid 746] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 752 attached [pid 750] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 749] <... futex resumed>) = 0 [pid 748] <... mknod resumed>) = -1 EEXIST (File exists) [pid 747] <... close resumed>) = 0 [pid 752] set_robust_list(0x5555636e06a0, 24 [pid 750] chdir("./file0" [pid 749] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 748] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 747] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 752] <... set_robust_list resumed>) = 0 [pid 750] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 748] <... futex resumed>) = 1 [pid 747] <... futex resumed>) = 1 [pid 746] <... futex resumed>) = 0 [pid 752] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 750] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 748] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 747] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 746] exit_group(0 [pid 744] <... futex resumed>) = 0 [pid 752] <... prctl resumed>) = 0 [pid 750] <... futex resumed>) = 1 [pid 749] <... futex resumed>) = 0 [pid 748] <... futex resumed>) = ? [pid 746] <... exit_group resumed>) = ? [pid 744] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 752] setpgid(0, 0 [pid 750] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 749] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 748] +++ exited with 0 +++ [pid 747] <... futex resumed>) = 0 [pid 746] +++ exited with 0 +++ [pid 744] <... futex resumed>) = 1 [pid 752] <... setpgid resumed>) = 0 [pid 750] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 749] <... futex resumed>) = 0 [pid 747] mknod(0x20000000, 000 [pid 744] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=746, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 752] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 750] creat("./bus", 000 [pid 749] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 747] <... mknod resumed>) = -1 EEXIST (File exists) [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 752] <... openat resumed>) = 3 [pid 750] <... creat resumed>) = 3 [pid 747] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 750] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 752] write(3, "1000", 4 [pid 747] <... futex resumed>) = 1 [pid 744] <... futex resumed>) = 0 [pid 751] <... prctl resumed>) = 0 [pid 750] <... futex resumed>) = 1 [pid 749] <... futex resumed>) = 0 [pid 752] <... write resumed>) = 4 [pid 751] setpgid(0, 0 [pid 750] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 749] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 747] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 744] exit_group(0 [pid 752] close(3 [pid 751] <... setpgid resumed>) = 0 [pid 750] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 749] <... futex resumed>) = 0 [pid 751] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 749] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 751] <... openat resumed>) = 3 [pid 751] write(3, "1000", 4) = 4 [pid 751] close(3) = 0 executing program [pid 751] write(1, "executing program\n", 18) = 18 [pid 751] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 751] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 751] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 751] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 744] <... exit_group resumed>) = ? [pid 303] <... restart_syscall resumed>) = 0 [pid 751] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 750] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 747] <... futex resumed>) = ? [pid 751] <... mprotect resumed>) = 0 [pid 750] <... openat resumed>) = 4 [pid 751] rt_sigprocmask(SIG_BLOCK, ~[], [pid 747] +++ exited with 0 +++ [pid 744] +++ exited with 0 +++ [pid 751] <... rt_sigprocmask resumed>[], 8) = 0 [pid 750] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 751] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 750] <... futex resumed>) = 1 [pid 749] <... futex resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=744, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 750] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 749] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 751] <... clone3 resumed> => {parent_tid=[753]}, 88) = 753 [pid 750] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 749] <... futex resumed>) = 0 [pid 303] <... openat resumed>) = 3 [pid 751] rt_sigprocmask(SIG_SETMASK, [], [pid 750] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 749] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 751] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 303] ioctl(3, LOOP_CLR_FD [pid 751] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... ioctl resumed>) = 0 [pid 751] <... futex resumed>) = 0 [pid 303] close(3 [pid 751] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 303] <... close resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 753 attached [pid 753] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 754 [pid 306] <... restart_syscall resumed>) = 0 [pid 752] <... close resumed>) = 0 executing program [pid 752] write(1, "executing program\n", 18 [pid 750] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 752] <... write resumed>) = 18 [pid 750] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... openat resumed>) = 3 [pid 752] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 750] <... futex resumed>) = 1 [pid 749] <... futex resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 752] <... futex resumed>) = 0 [pid 750] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 749] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... ioctl resumed>) = 0 [pid 752] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 750] <... open resumed>) = 5 [pid 749] <... futex resumed>) = 0 [pid 306] close(3 [pid 752] <... rt_sigaction resumed>NULL, 8) = 0 [pid 750] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 749] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... close resumed>) = 0 [pid 752] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 750] <... futex resumed>) = 0 [pid 749] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 752] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 750] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 749] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 752] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 750] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 749] <... futex resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 755 [pid 752] <... mmap resumed>) = 0x7fe6f87b1000 [pid 750] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 749] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 752] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 750] <... mmap resumed>) = 0x20000000 [pid 752] <... mprotect resumed>) = 0 [pid 750] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 752] rt_sigprocmask(SIG_BLOCK, ~[], [pid 750] <... futex resumed>) = 1 [pid 749] <... futex resumed>) = 0 [pid 752] <... rt_sigprocmask resumed>[], 8) = 0 [pid 750] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 749] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 752] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 750] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 749] <... futex resumed>) = 0 [pid 750] memfd_create("syzkaller", 0 [pid 749] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 752] <... clone3 resumed> => {parent_tid=[756]}, 88) = 756 [pid 750] <... memfd_create resumed>) = 6 [pid 752] rt_sigprocmask(SIG_SETMASK, [], [pid 750] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 752] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 754 attached [pid 752] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 750] <... mmap resumed>) = 0x7fe6f03b1000 [pid 752] <... futex resumed>) = 0 [pid 753] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 753] memfd_create("syzkaller", 0) = 3 [pid 753] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 754] set_robust_list(0x5555636e06a0, 24 [pid 752] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 750] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 754] <... set_robust_list resumed>) = 0 [pid 754] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 750] <... write resumed>) = 131072 [pid 754] <... prctl resumed>) = 0 [pid 750] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 754] setpgid(0, 0 [pid 750] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 754] <... setpgid resumed>) = 0 [pid 750] <... openat resumed>) = 7 [pid 750] ioctl(7, LOOP_SET_FD, 6 [pid 754] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 753] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 750] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) executing program [pid 754] <... openat resumed>) = 3 [pid 750] ioctl(7, LOOP_CLR_FD [pid 754] write(3, "1000", 4 [pid 750] <... ioctl resumed>) = 0 [pid 754] <... write resumed>) = 4 [pid 754] close(3 [pid 753] <... write resumed>) = 262144 ./strace-static-x86_64: Process 755 attached ./strace-static-x86_64: Process 756 attached [pid 754] <... close resumed>) = 0 [pid 754] write(1, "executing program\n", 18 [pid 750] ioctl(7, LOOP_SET_FD, 6 [pid 756] set_robust_list(0x7fe6f87d19a0, 24 [pid 754] <... write resumed>) = 18 [pid 750] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 756] <... set_robust_list resumed>) = 0 [pid 754] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 750] close(7 [pid 756] rt_sigprocmask(SIG_SETMASK, [], [pid 754] <... futex resumed>) = 0 [pid 750] <... close resumed>) = 0 [pid 756] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 754] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 750] close(6 [pid 754] <... rt_sigaction resumed>NULL, 8) = 0 [pid 755] set_robust_list(0x5555636e06a0, 24) = 0 [pid 750] <... close resumed>) = 0 [pid 754] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 750] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 754] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 750] <... futex resumed>) = 1 [pid 749] <... futex resumed>) = 0 [pid 756] memfd_create("syzkaller", 0 [pid 754] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 750] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 749] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 754] <... mmap resumed>) = 0x7fe6f87b1000 [pid 750] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 749] <... futex resumed>) = 0 [pid 756] <... memfd_create resumed>) = 3 [pid 754] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 750] mknod(0x20000000, 000 [pid 749] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 756] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 754] <... mprotect resumed>) = 0 [pid 750] <... mknod resumed>) = -1 EEXIST (File exists) [pid 756] <... mmap resumed>) = 0x7fe6f03b1000 [pid 754] rt_sigprocmask(SIG_BLOCK, ~[], [pid 750] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 754] <... rt_sigprocmask resumed>[], 8) = 0 [pid 754] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 750] <... futex resumed>) = 1 [pid 749] <... futex resumed>) = 0 [pid 750] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 749] exit_group(0 [pid 755] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 753] munmap(0x7fe6f03b1000, 138412032 [pid 750] <... futex resumed>) = ? [pid 749] <... exit_group resumed>) = ? [pid 755] <... prctl resumed>) = 0 [pid 753] <... munmap resumed>) = 0 [pid 750] +++ exited with 0 +++ [pid 755] setpgid(0, 0 [pid 753] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 755] <... setpgid resumed>) = 0 [pid 754] <... clone3 resumed> => {parent_tid=[757]}, 88) = 757 [pid 753] <... openat resumed>) = 4 [pid 749] +++ exited with 0 +++ [pid 755] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 753] ioctl(4, LOOP_SET_FD, 3 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=749, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 755] <... openat resumed>) = 3 [pid 753] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 755] write(3, "1000", 4 [pid 753] ioctl(4, LOOP_CLR_FD [pid 755] <... write resumed>) = 4 [pid 753] <... ioctl resumed>) = 0 [pid 756] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 755] close(3 [pid 754] rt_sigprocmask(SIG_SETMASK, [], executing program [pid 755] <... close resumed>) = 0 [pid 754] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 755] write(1, "executing program\n", 18 [pid 754] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 755] <... write resumed>) = 18 [pid 754] <... futex resumed>) = 0 [pid 755] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 754] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 755] <... futex resumed>) = 0 [pid 304] <... openat resumed>) = 3 [pid 755] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 753] ioctl(4, LOOP_SET_FD, 3 [pid 304] ioctl(3, LOOP_CLR_FD [pid 755] <... rt_sigaction resumed>NULL, 8) = 0 [pid 753] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] <... ioctl resumed>) = 0 [pid 755] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 753] close(4 [pid 304] close(3 [pid 755] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 753] <... close resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 755] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 753] close(3 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 755] <... mmap resumed>) = 0x7fe6f87b1000 [pid 753] <... close resumed>) = 0 [pid 755] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 753] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 758 [pid 755] <... mprotect resumed>) = 0 [pid 753] <... futex resumed>) = 1 [pid 751] <... futex resumed>) = 0 [pid 755] rt_sigprocmask(SIG_BLOCK, ~[], [pid 753] chdir("./file0" [pid 751] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 755] <... rt_sigprocmask resumed>[], 8) = 0 [pid 753] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 751] <... futex resumed>) = 0 [pid 755] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 753] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 751] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 753] <... futex resumed>) = 0 [pid 751] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 755] <... clone3 resumed> => {parent_tid=[759]}, 88) = 759 [pid 753] creat("./bus", 000 [pid 751] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 755] rt_sigprocmask(SIG_SETMASK, [], [pid 753] <... creat resumed>) = 3 [pid 751] <... futex resumed>) = 0 [pid 755] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 753] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 751] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 756] <... write resumed>) = 262144 [pid 755] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 753] <... futex resumed>) = 0 [pid 751] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 755] <... futex resumed>) = 0 [pid 753] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 751] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 755] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 753] <... openat resumed>) = 4 [pid 751] <... futex resumed>) = 0 [pid 756] munmap(0x7fe6f03b1000, 138412032 [pid 753] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 751] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 753] <... futex resumed>) = 0 [pid 751] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 756] <... munmap resumed>) = 0 [pid 753] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 751] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 757 attached [pid 756] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 753] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 751] <... futex resumed>) = 0 [pid 757] set_robust_list(0x7fe6f87d19a0, 24 [pid 753] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 751] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 757] <... set_robust_list resumed>) = 0 [pid 756] <... openat resumed>) = 4 [pid 753] <... futex resumed>) = 0 [pid 751] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 757] rt_sigprocmask(SIG_SETMASK, [], [pid 753] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 751] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 757] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 753] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 751] <... futex resumed>) = 0 [pid 757] memfd_create("syzkaller", 0 [pid 753] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 751] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 757] <... memfd_create resumed>) = 3 [pid 753] <... open resumed>) = 5 [pid 757] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 753] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 757] <... mmap resumed>) = 0x7fe6f03b1000 [pid 753] <... futex resumed>) = 1 [pid 751] <... futex resumed>) = 0 [pid 753] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 751] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 753] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 751] <... futex resumed>) = 0 [pid 753] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 751] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 753] <... mmap resumed>) = 0x20000000 [pid 753] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 751] <... futex resumed>) = 0 [pid 753] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 751] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 759 attached [pid 753] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 751] <... futex resumed>) = 0 [pid 759] set_robust_list(0x7fe6f87d19a0, 24 [pid 753] memfd_create("syzkaller", 0 [pid 751] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 759] <... set_robust_list resumed>) = 0 [pid 753] <... memfd_create resumed>) = 6 [pid 759] rt_sigprocmask(SIG_SETMASK, [], [pid 753] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 759] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 753] <... mmap resumed>) = 0x7fe6f03b1000 [pid 759] memfd_create("syzkaller", 0 [pid 753] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 759] <... memfd_create resumed>) = 3 [pid 753] <... write resumed>) = 131072 [pid 759] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 757] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 753] munmap(0x7fe6f03b1000, 138412032./strace-static-x86_64: Process 758 attached [pid 759] <... mmap resumed>) = 0x7fe6f03b1000 [pid 757] <... write resumed>) = 262144 [pid 756] ioctl(4, LOOP_SET_FD, 3 [pid 753] <... munmap resumed>) = 0 [pid 759] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 753] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 7 [pid 753] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 753] ioctl(7, LOOP_CLR_FD) = 0 [pid 757] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 757] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 757] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 757] ioctl(4, LOOP_CLR_FD) = 0 [pid 756] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 756] ioctl(4, LOOP_CLR_FD [pid 758] set_robust_list(0x5555636e06a0, 24) = 0 [pid 756] <... ioctl resumed>) = 0 [pid 758] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 753] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 758] setpgid(0, 0 [pid 753] close(7 [pid 758] <... setpgid resumed>) = 0 [pid 753] <... close resumed>) = 0 [pid 759] <... write resumed>) = 262144 [pid 758] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 753] close(6 [pid 758] <... openat resumed>) = 3 [pid 757] ioctl(4, LOOP_SET_FD, 3 [pid 756] ioctl(4, LOOP_SET_FD, 3 [pid 753] <... close resumed>) = 0 [pid 758] write(3, "1000", 4 [pid 757] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 756] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 753] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 758] <... write resumed>) = 4 [pid 757] close(4 [pid 756] close(4 [pid 753] <... futex resumed>) = 1 [pid 751] <... futex resumed>) = 0 [pid 758] close(3 [pid 757] <... close resumed>) = 0 [pid 756] <... close resumed>) = 0 [pid 753] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 751] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 758] <... close resumed>) = 0 [pid 757] close(3 [pid 756] close(3 [pid 753] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) executing program [pid 751] <... futex resumed>) = 0 [pid 759] munmap(0x7fe6f03b1000, 138412032 [pid 758] write(1, "executing program\n", 18 [pid 757] <... close resumed>) = 0 [pid 756] <... close resumed>) = 0 [pid 753] mknod(0x20000000, 000 [pid 751] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 759] <... munmap resumed>) = 0 [pid 758] <... write resumed>) = 18 [pid 757] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 756] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 753] <... mknod resumed>) = -1 EEXIST (File exists) [pid 759] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 758] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 757] <... futex resumed>) = 1 [pid 756] <... futex resumed>) = 1 [pid 754] <... futex resumed>) = 0 [pid 753] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 752] <... futex resumed>) = 0 [pid 759] <... openat resumed>) = 4 [pid 758] <... futex resumed>) = 0 [pid 757] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 756] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 754] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 753] <... futex resumed>) = 1 [pid 752] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 751] <... futex resumed>) = 0 [pid 759] ioctl(4, LOOP_SET_FD, 3 [pid 758] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 757] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 756] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 754] <... futex resumed>) = 0 [pid 753] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 752] <... futex resumed>) = 0 [pid 751] exit_group(0 [pid 759] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 757] chdir("./file0" [pid 753] <... futex resumed>) = ? [pid 751] <... exit_group resumed>) = ? [pid 759] ioctl(4, LOOP_CLR_FD [pid 758] <... rt_sigaction resumed>NULL, 8) = 0 [pid 757] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 756] chdir("./file0" [pid 754] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 753] +++ exited with 0 +++ [pid 752] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 751] +++ exited with 0 +++ [pid 759] <... ioctl resumed>) = 0 [pid 758] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 757] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 756] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 754] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=751, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 758] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 757] <... futex resumed>) = 0 [pid 756] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 754] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 758] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 757] creat("./bus", 000 [pid 756] <... futex resumed>) = 1 [pid 754] <... futex resumed>) = 0 [pid 752] <... futex resumed>) = 0 [pid 758] <... mmap resumed>) = 0x7fe6f87b1000 [pid 757] <... creat resumed>) = 3 [pid 756] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 754] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 752] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 758] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 757] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 756] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 754] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 752] <... futex resumed>) = 0 [pid 758] <... mprotect resumed>) = 0 [pid 757] <... futex resumed>) = 0 [pid 756] creat("./bus", 000 [pid 754] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 752] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 759] ioctl(4, LOOP_SET_FD, 3 [pid 758] rt_sigprocmask(SIG_BLOCK, ~[], [pid 757] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 759] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 758] <... rt_sigprocmask resumed>[], 8) = 0 [pid 757] <... openat resumed>) = 4 [pid 756] <... creat resumed>) = 3 [pid 754] <... futex resumed>) = 0 [pid 759] close(4 [pid 758] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 757] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 756] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 754] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 759] <... close resumed>) = 0 [pid 757] <... futex resumed>) = 0 [pid 756] <... futex resumed>) = 1 [pid 754] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 752] <... futex resumed>) = 0 [pid 759] close(3 [pid 758] <... clone3 resumed> => {parent_tid=[760]}, 88) = 760 [pid 757] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 756] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 754] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 752] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 759] <... close resumed>) = 0 [pid 758] rt_sigprocmask(SIG_SETMASK, [], [pid 757] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 756] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 754] <... futex resumed>) = 0 [pid 752] <... futex resumed>) = 0 [pid 759] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 758] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 757] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 756] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 754] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 752] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 759] <... futex resumed>) = 1 [pid 758] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 757] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 755] <... futex resumed>) = 0 [pid 759] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 758] <... futex resumed>) = 0 [pid 757] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 756] <... openat resumed>) = 4 [pid 755] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 759] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 758] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 757] <... futex resumed>) = 1 [pid 756] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 755] <... futex resumed>) = 0 [pid 754] <... futex resumed>) = 0 [pid 759] chdir("./file0" [pid 757] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 756] <... futex resumed>) = 1 [pid 755] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 754] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 752] <... futex resumed>) = 0 [pid 759] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 757] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 756] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 754] <... futex resumed>) = 0 [pid 752] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 759] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 757] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 756] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 754] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 752] <... futex resumed>) = 0 [pid 759] <... futex resumed>) = 1 [pid 757] <... open resumed>) = 5 [pid 756] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 755] <... futex resumed>) = 0 [pid 752] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 759] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 757] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 755] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 759] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 757] <... futex resumed>) = 1 [pid 755] <... futex resumed>) = 0 [pid 754] <... futex resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 759] creat("./bus", 000 [pid 757] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 755] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 754] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... openat resumed>) = 3 [pid 759] <... creat resumed>) = 3 [pid 757] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 756] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 754] <... futex resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 759] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 757] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 756] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 754] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... ioctl resumed>) = 0 [pid 759] <... futex resumed>) = 1 [pid 757] <... mmap resumed>) = 0x20000000 [pid 756] <... futex resumed>) = 1 [pid 755] <... futex resumed>) = 0 [pid 752] <... futex resumed>) = 0 [pid 305] close(3 [pid 759] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 757] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 756] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 755] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... close resumed>) = 0 ./strace-static-x86_64: Process 760 attached [pid 759] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 757] <... futex resumed>) = 1 [pid 756] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 755] <... futex resumed>) = 0 [pid 754] <... futex resumed>) = 0 [pid 752] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 760] set_robust_list(0x7fe6f87d19a0, 24 [pid 759] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 757] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 756] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 755] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 754] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 752] <... futex resumed>) = 0 [pid 760] <... set_robust_list resumed>) = 0 [pid 759] <... openat resumed>) = 4 [pid 757] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 756] <... open resumed>) = 5 [pid 754] <... futex resumed>) = 0 [pid 752] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 761 [pid 760] rt_sigprocmask(SIG_SETMASK, [], [pid 759] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 757] memfd_create("syzkaller", 0 [pid 756] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 754] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 752] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 760] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 759] <... futex resumed>) = 1 [pid 757] <... memfd_create resumed>) = 6 [pid 756] <... futex resumed>) = 0 [pid 755] <... futex resumed>) = 0 [pid 752] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 760] memfd_create("syzkaller", 0 [pid 759] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 757] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 756] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 755] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 752] <... futex resumed>) = 0 [pid 760] <... memfd_create resumed>) = 3 [pid 759] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 757] <... mmap resumed>) = 0x7fe6f03b1000 [pid 755] <... futex resumed>) = 0 [pid 760] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 759] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 757] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 756] <... mmap resumed>) = 0x20000000 [pid 755] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 752] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 760] <... mmap resumed>) = 0x7fe6f03b1000 [pid 757] <... write resumed>) = 131072 [pid 756] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 752] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 760] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 759] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 757] munmap(0x7fe6f03b1000, 138412032 [pid 756] <... futex resumed>) = 0 [pid 752] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 760] <... write resumed>) = 262144 [pid 759] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 757] <... munmap resumed>) = 0 [pid 756] memfd_create("syzkaller", 0 [pid 752] <... futex resumed>) = 0 [pid 759] <... futex resumed>) = 1 [pid 757] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 755] <... futex resumed>) = 0 [pid 759] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 757] <... openat resumed>) = 7 [pid 756] <... memfd_create resumed>) = 6 [pid 755] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 752] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 761 attached [pid 760] munmap(0x7fe6f03b1000, 138412032 [pid 759] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 757] ioctl(7, LOOP_SET_FD, 6 [pid 756] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 755] <... futex resumed>) = 0 [pid 761] set_robust_list(0x5555636e06a0, 24 [pid 760] <... munmap resumed>) = 0 [pid 759] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 757] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 756] <... mmap resumed>) = 0x7fe6f03b1000 [pid 755] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 760] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 759] <... open resumed>) = 5 [pid 757] ioctl(7, LOOP_CLR_FD [pid 760] <... openat resumed>) = 4 [pid 759] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 757] <... ioctl resumed>) = 0 [pid 760] ioctl(4, LOOP_SET_FD, 3 [pid 759] <... futex resumed>) = 1 [pid 755] <... futex resumed>) = 0 [pid 760] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 759] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 755] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 760] ioctl(4, LOOP_CLR_FD [pid 759] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 755] <... futex resumed>) = 0 [pid 760] <... ioctl resumed>) = 0 [pid 759] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 755] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 759] <... mmap resumed>) = 0x20000000 [pid 756] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 759] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 755] <... futex resumed>) = 0 [pid 759] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 757] ioctl(7, LOOP_SET_FD, 6 [pid 755] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 759] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 757] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 755] <... futex resumed>) = 0 [pid 759] memfd_create("syzkaller", 0 [pid 757] close(7 [pid 755] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 759] <... memfd_create resumed>) = 6 [pid 757] <... close resumed>) = 0 [pid 760] ioctl(4, LOOP_SET_FD, 3 [pid 759] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 757] close(6 [pid 760] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 759] <... mmap resumed>) = 0x7fe6f03b1000 [pid 757] <... close resumed>) = 0 [pid 760] close(4 [pid 759] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 757] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 760] <... close resumed>) = 0 [pid 759] <... write resumed>) = 131072 [pid 757] <... futex resumed>) = 1 [pid 756] <... write resumed>) = 131072 [pid 754] <... futex resumed>) = 0 [pid 761] <... set_robust_list resumed>) = 0 [pid 760] close(3 [pid 759] munmap(0x7fe6f03b1000, 138412032 [pid 757] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 756] munmap(0x7fe6f03b1000, 138412032 [pid 754] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 760] <... close resumed>) = 0 [pid 759] <... munmap resumed>) = 0 [pid 757] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 756] <... munmap resumed>) = 0 [pid 754] <... futex resumed>) = 0 [pid 761] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 760] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 759] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 757] mknod(0x20000000, 000 [pid 756] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 754] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 761] <... prctl resumed>) = 0 [pid 760] <... futex resumed>) = 1 [pid 759] <... openat resumed>) = 7 [pid 758] <... futex resumed>) = 0 [pid 757] <... mknod resumed>) = -1 EEXIST (File exists) [pid 756] <... openat resumed>) = 7 [pid 761] setpgid(0, 0 [pid 760] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 759] ioctl(7, LOOP_SET_FD, 6 [pid 758] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 757] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 756] ioctl(7, LOOP_SET_FD, 6 [pid 761] <... setpgid resumed>) = 0 [pid 760] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 759] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 758] <... futex resumed>) = 0 [pid 757] <... futex resumed>) = 1 [pid 756] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 754] <... futex resumed>) = 0 [pid 760] chdir("./file0" [pid 759] ioctl(7, LOOP_CLR_FD [pid 758] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 757] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 756] ioctl(7, LOOP_CLR_FD [pid 754] exit_group(0 [pid 761] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 760] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 759] <... ioctl resumed>) = 0 [pid 757] <... futex resumed>) = ? [pid 756] <... ioctl resumed>) = 0 [pid 754] <... exit_group resumed>) = ? [pid 761] <... openat resumed>) = 3 [pid 760] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 757] +++ exited with 0 +++ [pid 754] +++ exited with 0 +++ [pid 761] write(3, "1000", 4 [pid 760] <... futex resumed>) = 1 [pid 758] <... futex resumed>) = 0 [pid 761] <... write resumed>) = 4 [pid 760] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 758] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 760] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 758] <... futex resumed>) = 0 [pid 761] close(3 [pid 760] creat("./bus", 000 [pid 758] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=754, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 761] <... close resumed>) = 0 [pid 760] <... creat resumed>) = 3 [pid 760] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 759] ioctl(7, LOOP_SET_FD, 6 [pid 756] ioctl(7, LOOP_SET_FD, 6 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 761] write(1, "executing program\n", 18 [pid 760] <... futex resumed>) = 1 [pid 759] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 758] <... futex resumed>) = 0 [pid 756] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 761] <... write resumed>) = 18 [pid 760] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 759] close(7 [pid 758] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... openat resumed>) = 3 [pid 761] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 760] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 759] <... close resumed>) = 0 [pid 758] <... futex resumed>) = 0 [pid 756] close(7 [pid 761] <... futex resumed>) = 0 [pid 760] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 759] close(6 [pid 758] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] ioctl(3, LOOP_CLR_FD [pid 760] <... openat resumed>) = 4 [pid 759] <... close resumed>) = 0 [pid 756] <... close resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 761] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 760] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 759] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 756] close(6 [pid 303] close(3 [pid 760] <... futex resumed>) = 1 [pid 759] <... futex resumed>) = 1 [pid 758] <... futex resumed>) = 0 [pid 755] <... futex resumed>) = 0 [pid 761] <... rt_sigaction resumed>NULL, 8) = 0 [pid 760] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 759] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 758] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 756] <... close resumed>) = 0 [pid 755] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... close resumed>) = 0 [pid 761] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 760] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 759] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 758] <... futex resumed>) = 0 [pid 756] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 755] <... futex resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 760] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 759] mknod(0x20000000, 000 [pid 758] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 756] <... futex resumed>) = 1 [pid 755] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 761] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 760] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 759] <... mknod resumed>) = -1 EEXIST (File exists) [pid 756] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 752] <... futex resumed>) = 0 [pid 761] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 760] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 759] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 752] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 762 [pid 760] <... futex resumed>) = 1 [pid 759] <... futex resumed>) = 1 [pid 758] <... futex resumed>) = 0 [pid 756] <... futex resumed>) = 0 [pid 755] <... futex resumed>) = 0 [pid 752] <... futex resumed>) = 1 [pid 761] <... mmap resumed>) = 0x7fe6f87b1000 [pid 760] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 759] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 758] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 756] mknod(0x20000000, 000 [pid 755] exit_group(0 [pid 752] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 761] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 760] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 759] <... futex resumed>) = ? [pid 758] <... futex resumed>) = 0 [pid 756] <... mknod resumed>) = -1 EEXIST (File exists) [pid 755] <... exit_group resumed>) = ? [pid 761] <... mprotect resumed>) = 0 [pid 760] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 759] +++ exited with 0 +++ [pid 758] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 756] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 755] +++ exited with 0 +++ [pid 761] rt_sigprocmask(SIG_BLOCK, ~[], [pid 760] <... open resumed>) = 5 [pid 756] <... futex resumed>) = 1 [pid 752] <... futex resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=755, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 761] <... rt_sigprocmask resumed>[], 8) = 0 [pid 760] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 756] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 752] exit_group(0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 761] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 760] <... futex resumed>) = 1 [pid 758] <... futex resumed>) = 0 [pid 756] <... futex resumed>) = ? [pid 752] <... exit_group resumed>) = ? [pid 306] <... restart_syscall resumed>) = 0 [pid 760] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 758] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 756] +++ exited with 0 +++ ./strace-static-x86_64: Process 762 attached [pid 760] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 758] <... futex resumed>) = 0 [pid 752] +++ exited with 0 +++ [pid 762] set_robust_list(0x5555636e06a0, 24 [pid 760] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 758] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=752, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 762] <... set_robust_list resumed>) = 0 [pid 761] <... clone3 resumed> => {parent_tid=[763]}, 88) = 763 [pid 760] <... mmap resumed>) = 0x20000000 [pid 306] <... openat resumed>) = 3 [pid 302] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 763 attached [pid 762] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 761] rt_sigprocmask(SIG_SETMASK, [], [pid 760] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] ioctl(3, LOOP_CLR_FD [pid 763] set_robust_list(0x7fe6f87d19a0, 24 [pid 762] <... prctl resumed>) = 0 [pid 761] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 760] <... futex resumed>) = 1 [pid 758] <... futex resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 763] <... set_robust_list resumed>) = 0 [pid 762] setpgid(0, 0 [pid 761] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 760] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 758] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] close(3 [pid 763] rt_sigprocmask(SIG_SETMASK, [], [pid 762] <... setpgid resumed>) = 0 [pid 761] <... futex resumed>) = 0 [pid 760] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 758] <... futex resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 763] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 762] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 761] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 760] memfd_create("syzkaller", 0 [pid 758] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 763] memfd_create("syzkaller", 0 [pid 762] <... openat resumed>) = 3 [pid 760] <... memfd_create resumed>) = 6 [pid 762] write(3, "1000", 4 [pid 760] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 764 [pid 762] <... write resumed>) = 4 [pid 760] <... mmap resumed>) = 0x7fe6f03b1000 [pid 762] close(3 [pid 760] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072executing program [pid 763] <... memfd_create resumed>) = 3 [pid 762] <... close resumed>) = 0 [pid 760] <... write resumed>) = 131072 [pid 762] write(1, "executing program\n", 18 [pid 760] munmap(0x7fe6f03b1000, 138412032 [pid 762] <... write resumed>) = 18 [pid 760] <... munmap resumed>) = 0 [pid 762] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 760] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 763] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 762] <... futex resumed>) = 0 [pid 760] <... openat resumed>) = 7 [pid 763] <... mmap resumed>) = 0x7fe6f03b1000 [pid 762] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 760] ioctl(7, LOOP_SET_FD, 6 [pid 302] <... restart_syscall resumed>) = 0 [pid 762] <... rt_sigaction resumed>NULL, 8) = 0 [pid 760] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 762] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 760] ioctl(7, LOOP_CLR_FD [pid 762] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 760] <... ioctl resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 762] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 302] <... openat resumed>) = 3 [pid 762] <... mmap resumed>) = 0x7fe6f87b1000 [pid 302] ioctl(3, LOOP_CLR_FD [pid 762] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 302] <... ioctl resumed>) = 0 [pid 763] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 762] <... mprotect resumed>) = 0 [pid 302] close(3 [pid 762] rt_sigprocmask(SIG_BLOCK, ~[], [pid 302] <... close resumed>) = 0 [pid 762] <... rt_sigprocmask resumed>[], 8) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 763] <... write resumed>) = 262144 [pid 762] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 760] ioctl(7, LOOP_SET_FD, 6 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 765 [pid 762] <... clone3 resumed> => {parent_tid=[766]}, 88) = 766 [pid 760] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 762] rt_sigprocmask(SIG_SETMASK, [], [pid 760] close(7 [pid 763] munmap(0x7fe6f03b1000, 138412032 [pid 762] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 760] <... close resumed>) = 0 [pid 763] <... munmap resumed>) = 0 [pid 762] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 760] close(6 [pid 763] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 762] <... futex resumed>) = 0 [pid 760] <... close resumed>) = 0 [pid 763] <... openat resumed>) = 4 [pid 762] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 760] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 765 attached [pid 763] ioctl(4, LOOP_SET_FD, 3 [pid 760] <... futex resumed>) = 1 [pid 758] <... futex resumed>) = 0 [pid 760] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 758] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 760] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 758] <... futex resumed>) = 0 [pid 763] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 760] mknod(0x20000000, 000 [pid 758] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 763] ioctl(4, LOOP_CLR_FD [pid 760] <... mknod resumed>) = -1 EEXIST (File exists) [pid 763] <... ioctl resumed>) = 0 [pid 760] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 758] <... futex resumed>) = 0 [pid 760] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 758] exit_group(0./strace-static-x86_64: Process 764 attached [pid 760] <... futex resumed>) = ? [pid 758] <... exit_group resumed>) = ? [pid 764] set_robust_list(0x5555636e06a0, 24 [pid 760] +++ exited with 0 +++ [pid 758] +++ exited with 0 +++ [pid 765] set_robust_list(0x5555636e06a0, 24) = 0 [pid 764] <... set_robust_list resumed>) = 0 [pid 763] ioctl(4, LOOP_SET_FD, 3 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=758, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 765] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 764] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 763] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 765] <... prctl resumed>) = 0 [pid 764] <... prctl resumed>) = 0 [pid 763] close(4 [pid 304] <... restart_syscall resumed>) = 0 [pid 765] setpgid(0, 0 [pid 764] setpgid(0, 0 [pid 763] <... close resumed>) = 0 [pid 765] <... setpgid resumed>) = 0 [pid 764] <... setpgid resumed>) = 0 [pid 763] close(3 [pid 764] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR./strace-static-x86_64: Process 766 attached [pid 764] <... openat resumed>) = 3 [pid 304] <... openat resumed>) = 3 [pid 766] set_robust_list(0x7fe6f87d19a0, 24 [pid 765] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 764] write(3, "1000", 4 [pid 763] <... close resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 766] <... set_robust_list resumed>) = 0 [pid 765] <... openat resumed>) = 3 [pid 764] <... write resumed>) = 4 [pid 763] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... ioctl resumed>) = 0 [pid 766] rt_sigprocmask(SIG_SETMASK, [], [pid 765] write(3, "1000", 4 [pid 764] close(3 [pid 763] <... futex resumed>) = 1 [pid 761] <... futex resumed>) = 0 [pid 304] close(3 [pid 766] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 765] <... write resumed>) = 4 [pid 764] <... close resumed>) = 0 [pid 763] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 761] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... close resumed>) = 0 executing program [pid 766] memfd_create("syzkaller", 0 [pid 765] close(3 [pid 764] write(1, "executing program\n", 18 [pid 763] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 761] <... futex resumed>) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 766] <... memfd_create resumed>) = 3 [pid 765] <... close resumed>) = 0 [pid 764] <... write resumed>) = 18 [pid 763] chdir("./file0" [pid 761] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}executing program [pid 766] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 765] write(1, "executing program\n", 18 [pid 764] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 763] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 767 ./strace-static-x86_64: Process 767 attached [pid 766] <... mmap resumed>) = 0x7fe6f03b1000 [pid 765] <... write resumed>) = 18 [pid 764] <... futex resumed>) = 0 [pid 763] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 767] set_robust_list(0x5555636e06a0, 24 [pid 765] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 763] <... futex resumed>) = 1 [pid 761] <... futex resumed>) = 0 [pid 767] <... set_robust_list resumed>) = 0 [pid 765] <... futex resumed>) = 0 [pid 764] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 763] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 761] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 767] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 765] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 764] <... rt_sigaction resumed>NULL, 8) = 0 [pid 763] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 761] <... futex resumed>) = 0 [pid 767] <... prctl resumed>) = 0 [pid 765] <... rt_sigaction resumed>NULL, 8) = 0 [pid 763] creat("./bus", 000 [pid 761] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 767] setpgid(0, 0 [pid 765] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 763] <... creat resumed>) = 3 [pid 767] <... setpgid resumed>) = 0 [pid 765] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 763] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 767] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 765] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 763] <... futex resumed>) = 1 [pid 761] <... futex resumed>) = 0 [pid 767] <... openat resumed>) = 3 [pid 765] <... mmap resumed>) = 0x7fe6f87b1000 [pid 763] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 761] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 767] write(3, "1000", 4 [pid 765] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 763] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 761] <... futex resumed>) = 0 [pid 767] <... write resumed>) = 4 [pid 766] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 765] <... mprotect resumed>) = 0 executing program [pid 764] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 763] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 761] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 767] close(3 [pid 765] rt_sigprocmask(SIG_BLOCK, ~[], [pid 763] <... openat resumed>) = 4 [pid 767] <... close resumed>) = 0 [pid 765] <... rt_sigprocmask resumed>[], 8) = 0 [pid 763] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 767] write(1, "executing program\n", 18 [pid 765] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 763] <... futex resumed>) = 1 [pid 761] <... futex resumed>) = 0 [pid 767] <... write resumed>) = 18 [pid 763] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 761] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 767] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 765] <... clone3 resumed> => {parent_tid=[768]}, 88) = 768 [pid 763] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 761] <... futex resumed>) = 0 [pid 767] <... futex resumed>) = 0 [pid 765] rt_sigprocmask(SIG_SETMASK, [], [pid 763] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 761] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 767] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 765] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 767] <... rt_sigaction resumed>NULL, 8) = 0 [pid 765] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 767] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 765] <... futex resumed>) = 0 [pid 767] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 765] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 767] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 767] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 767] rt_sigprocmask(SIG_BLOCK, ~[], [pid 764] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 767] <... rt_sigprocmask resumed>[], 8) = 0 [pid 764] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 767] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 764] <... mmap resumed>) = 0x7fe6f87b1000 [pid 764] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 767] <... clone3 resumed> => {parent_tid=[769]}, 88) = 769 [pid 767] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 767] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 767] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 769 attached [pid 769] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 769] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 769] memfd_create("syzkaller", 0 [pid 766] <... write resumed>) = 262144 [pid 764] <... mprotect resumed>) = 0 [pid 769] <... memfd_create resumed>) = 3 [pid 769] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 766] munmap(0x7fe6f03b1000, 138412032 [pid 764] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 764] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[770]}, 88) = 770 [pid 764] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 764] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 764] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 766] <... munmap resumed>) = 0 [pid 766] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 769] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 768 attached [pid 766] <... openat resumed>) = 4 [pid 763] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 763] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 761] <... futex resumed>) = 0 [pid 763] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 761] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 763] <... open resumed>) = 5 [pid 761] <... futex resumed>) = 0 [pid 763] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 761] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 763] <... futex resumed>) = 0 [pid 761] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 763] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 761] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 763] <... mmap resumed>) = 0x20000000 [pid 761] <... futex resumed>) = 0 [pid 766] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 763] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 761] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 763] <... futex resumed>) = 0 [pid 761] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 768] set_robust_list(0x7fe6f87d19a0, 24 [pid 766] ioctl(4, LOOP_CLR_FD [pid 763] memfd_create("syzkaller", 0 [pid 761] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 763] <... memfd_create resumed>) = 6 [pid 761] <... futex resumed>) = 0 [pid 763] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 761] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 768] <... set_robust_list resumed>) = 0 [pid 766] <... ioctl resumed>) = 0 [pid 763] <... mmap resumed>) = 0x7fe6f03b1000 [pid 768] rt_sigprocmask(SIG_SETMASK, [], [pid 763] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 768] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 763] <... write resumed>) = 131072 [pid 763] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 763] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 768] memfd_create("syzkaller", 0 [pid 763] <... openat resumed>) = 7 [pid 763] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 763] ioctl(7, LOOP_CLR_FD) = 0 [pid 768] <... memfd_create resumed>) = 3 [pid 768] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 766] ioctl(4, LOOP_SET_FD, 3 [pid 763] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 763] close(7) = 0 [pid 763] close(6) = 0 [pid 763] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 761] <... futex resumed>) = 0 [pid 763] mknod(0x20000000, 000 [pid 761] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 763] <... mknod resumed>) = -1 EEXIST (File exists) [pid 761] <... futex resumed>) = 0 [pid 763] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 761] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 763] <... futex resumed>) = 0 [pid 761] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 763] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 761] exit_group(0 [pid 763] <... futex resumed>) = ? [pid 761] <... exit_group resumed>) = ? [pid 768] <... mmap resumed>) = 0x7fe6f03b1000 [pid 766] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 763] +++ exited with 0 +++ [pid 761] +++ exited with 0 +++ ./strace-static-x86_64: Process 770 attached [pid 770] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 770] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 770] memfd_create("syzkaller", 0 [pid 769] <... write resumed>) = 262144 [pid 770] <... memfd_create resumed>) = 3 [pid 770] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 768] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 766] close(4 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=761, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 766] <... close resumed>) = 0 [pid 769] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 769] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 766] close(3 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 769] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 769] ioctl(4, LOOP_CLR_FD [pid 768] <... write resumed>) = 262144 [pid 769] <... ioctl resumed>) = 0 [pid 766] <... close resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 768] munmap(0x7fe6f03b1000, 138412032 [pid 766] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] ioctl(3, LOOP_CLR_FD) = 0 [pid 305] close(3) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 770] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 769] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 769] close(4) = 0 [pid 769] close(3) = 0 [pid 768] <... munmap resumed>) = 0 [pid 766] <... futex resumed>) = 1 [pid 762] <... futex resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 772 [pid 768] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 766] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 762] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 766] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 762] <... futex resumed>) = 0 [pid 768] <... openat resumed>) = 4 [pid 766] chdir("./file0" [pid 762] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 768] ioctl(4, LOOP_SET_FD, 3 [pid 766] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 768] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 766] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 769] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 766] <... futex resumed>) = 1 [pid 762] <... futex resumed>) = 0 [pid 768] ioctl(4, LOOP_CLR_FD [pid 766] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 762] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 768] <... ioctl resumed>) = 0 [pid 766] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 762] <... futex resumed>) = 0 [pid 766] creat("./bus", 000 [pid 762] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 767] <... futex resumed>) = 0 [pid 766] <... creat resumed>) = 3 [pid 767] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 766] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 767] <... futex resumed>) = 0 [pid 767] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 766] <... futex resumed>) = 1 [pid 762] <... futex resumed>) = 0 [pid 766] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 762] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 766] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 762] <... futex resumed>) = 0 [pid 766] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 762] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 769] <... futex resumed>) = 1 [pid 769] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 766] <... openat resumed>) = 4 [pid 769] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 766] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 767] <... futex resumed>) = 0 [pid 766] <... futex resumed>) = 1 [pid 762] <... futex resumed>) = 0 [pid 767] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 766] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 762] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 767] <... futex resumed>) = 0 [pid 766] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 762] <... futex resumed>) = 0 [pid 767] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 766] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 762] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 769] <... futex resumed>) = 1 [pid 769] creat("./bus", 000) = 3 [pid 769] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 768] ioctl(4, LOOP_SET_FD, 3 [pid 767] <... futex resumed>) = 0 [pid 767] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 767] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 769] <... futex resumed>) = 1 [pid 769] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 768] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 769] <... openat resumed>) = 4 [pid 768] close(4 [pid 769] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 768] <... close resumed>) = 0 [pid 768] close(3 [pid 767] <... futex resumed>) = 0 [pid 767] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 769] <... futex resumed>) = 1 [pid 767] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 769] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 770] <... write resumed>) = 262144 [pid 769] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 768] <... close resumed>) = 0 [pid 766] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 768] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 766] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 769] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 766] <... futex resumed>) = 1 [pid 762] <... futex resumed>) = 0 [pid 768] <... futex resumed>) = 1 [pid 766] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 765] <... futex resumed>) = 0 [pid 762] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 769] <... futex resumed>) = 1 [pid 768] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 767] <... futex resumed>) = 0 [pid 766] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 765] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 762] <... futex resumed>) = 0 [pid 769] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 768] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 767] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 766] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 765] <... futex resumed>) = 0 [pid 762] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 769] <... open resumed>) = 5 [pid 768] chdir("./file0" [pid 767] <... futex resumed>) = 0 [pid 766] <... open resumed>) = 5 [pid 765] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 770] munmap(0x7fe6f03b1000, 138412032 [pid 769] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 768] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 767] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 766] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 770] <... munmap resumed>) = 0 [pid 769] <... futex resumed>) = 0 [pid 768] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 767] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 766] <... futex resumed>) = 1 [pid 770] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 769] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 768] <... futex resumed>) = 1 [pid 767] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 766] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 765] <... futex resumed>) = 0 [pid 762] <... futex resumed>) = 0 [pid 770] <... openat resumed>) = 4 [pid 769] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 768] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 767] <... futex resumed>) = 0 [pid 765] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 762] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 770] ioctl(4, LOOP_SET_FD, 3 [pid 769] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 768] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 767] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 765] <... futex resumed>) = 0 [pid 766] <... futex resumed>) = 0 [pid 762] <... futex resumed>) = 1 [pid 770] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 769] <... mmap resumed>) = 0x20000000 [pid 768] creat("./bus", 000 [pid 766] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 765] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 762] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 772 attached [pid 770] ioctl(4, LOOP_CLR_FD [pid 769] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 768] <... creat resumed>) = 3 [pid 772] set_robust_list(0x5555636e06a0, 24 [pid 770] <... ioctl resumed>) = 0 [pid 769] <... futex resumed>) = 1 [pid 767] <... futex resumed>) = 0 [pid 766] <... mmap resumed>) = 0x20000000 [pid 768] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 772] <... set_robust_list resumed>) = 0 [pid 769] memfd_create("syzkaller", 0 [pid 767] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 768] <... futex resumed>) = 1 [pid 766] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 765] <... futex resumed>) = 0 [pid 772] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 769] <... memfd_create resumed>) = 6 [pid 768] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 767] <... futex resumed>) = 0 [pid 766] <... futex resumed>) = 1 [pid 765] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 762] <... futex resumed>) = 0 [pid 772] <... prctl resumed>) = 0 [pid 769] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 768] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 767] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 766] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 765] <... futex resumed>) = 0 [pid 762] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 772] setpgid(0, 0 [pid 769] <... mmap resumed>) = 0x7fe6f03b1000 [pid 768] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 766] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 765] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 762] <... futex resumed>) = 0 [pid 772] <... setpgid resumed>) = 0 [pid 769] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 762] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 772] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 770] ioctl(4, LOOP_SET_FD, 3 [pid 769] <... write resumed>) = 131072 [pid 768] <... openat resumed>) = 4 [pid 766] memfd_create("syzkaller", 0 [pid 772] <... openat resumed>) = 3 [pid 770] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 769] munmap(0x7fe6f03b1000, 138412032 [pid 768] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 766] <... memfd_create resumed>) = 6 [pid 772] write(3, "1000", 4 [pid 770] close(4 [pid 769] <... munmap resumed>) = 0 [pid 768] <... futex resumed>) = 1 [pid 765] <... futex resumed>) = 0 [pid 772] <... write resumed>) = 4 [pid 770] <... close resumed>) = 0 [pid 769] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 765] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 772] close(3 [pid 770] close(3 [pid 769] <... openat resumed>) = 7 [pid 768] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 766] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 765] <... futex resumed>) = 0 [pid 772] <... close resumed>) = 0 [pid 770] <... close resumed>) = 0 [pid 769] ioctl(7, LOOP_SET_FD, 6 [pid 765] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 772] write(1, "executing program\n", 18 executing program [pid 770] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 769] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 766] <... mmap resumed>) = 0x7fe6f03b1000 [pid 772] <... write resumed>) = 18 [pid 770] <... futex resumed>) = 1 [pid 764] <... futex resumed>) = 0 [pid 772] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 770] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 769] ioctl(7, LOOP_CLR_FD [pid 772] <... futex resumed>) = 0 [pid 772] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 769] <... ioctl resumed>) = 0 [pid 772] <... rt_sigaction resumed>NULL, 8) = 0 [pid 772] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 772] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 772] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 772] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 772] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[773]}, 88) = 773 [pid 766] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 764] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 772] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 772] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 772] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 773 attached [pid 773] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 773] rt_sigprocmask(SIG_SETMASK, [], [pid 766] <... write resumed>) = 131072 [pid 770] <... futex resumed>) = 0 [pid 764] <... futex resumed>) = 1 [pid 770] chdir("./file0" [pid 766] munmap(0x7fe6f03b1000, 138412032 [pid 764] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 770] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 769] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 769] close(7 [pid 766] <... munmap resumed>) = 0 [pid 770] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 766] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 764] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 770] <... futex resumed>) = 0 [pid 766] <... openat resumed>) = 7 [pid 770] creat("./bus", 000 [pid 766] ioctl(7, LOOP_SET_FD, 6 [pid 764] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 770] <... creat resumed>) = 3 [pid 766] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 764] <... futex resumed>) = 0 [pid 770] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 766] ioctl(7, LOOP_CLR_FD [pid 764] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 770] <... futex resumed>) = 0 [pid 766] <... ioctl resumed>) = 0 [pid 764] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 770] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 768] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 764] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 770] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 768] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 764] <... futex resumed>) = 0 [pid 770] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 768] <... futex resumed>) = 1 [pid 764] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 769] <... close resumed>) = 0 [pid 765] <... futex resumed>) = 0 [pid 770] <... openat resumed>) = 4 [pid 769] close(6 [pid 765] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 770] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 768] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 770] <... futex resumed>) = 1 [pid 764] <... futex resumed>) = 0 [pid 770] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 769] <... close resumed>) = 0 [pid 768] <... open resumed>) = 5 [pid 765] <... futex resumed>) = 0 [pid 764] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 769] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 765] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 764] <... futex resumed>) = 0 [pid 770] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 768] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 770] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 768] <... futex resumed>) = 0 [pid 766] ioctl(7, LOOP_SET_FD, 6 [pid 764] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 770] <... futex resumed>) = 0 [pid 768] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 766] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 764] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 770] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 766] close(7 [pid 764] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 770] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 766] <... close resumed>) = 0 [pid 770] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 764] <... futex resumed>) = 0 [pid 766] close(6 [pid 770] <... open resumed>) = 5 [pid 769] <... futex resumed>) = 1 [pid 767] <... futex resumed>) = 0 [pid 766] <... close resumed>) = 0 [pid 765] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 764] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 770] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 769] mknod(0x20000000, 000 [pid 767] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 766] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 765] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 764] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 770] <... futex resumed>) = 0 [pid 769] <... mknod resumed>) = -1 EEXIST (File exists) [pid 768] <... futex resumed>) = 0 [pid 767] <... futex resumed>) = 0 [pid 766] <... futex resumed>) = 1 [pid 765] <... futex resumed>) = 1 [pid 764] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 762] <... futex resumed>) = 0 [pid 770] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 769] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 768] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 767] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 766] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 765] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 764] <... futex resumed>) = 0 [pid 762] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 770] <... mmap resumed>) = 0x20000000 [pid 769] <... futex resumed>) = 0 [pid 768] <... mmap resumed>) = 0x20000000 [pid 767] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 766] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 764] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 770] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 769] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 768] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 767] exit_group(0 [pid 766] mknod(0x20000000, 000 [pid 764] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 762] <... futex resumed>) = 0 [pid 770] <... futex resumed>) = 0 [pid 769] <... futex resumed>) = ? [pid 768] <... futex resumed>) = 1 [pid 767] <... exit_group resumed>) = ? [pid 766] <... mknod resumed>) = -1 EEXIST (File exists) [pid 765] <... futex resumed>) = 0 [pid 764] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 762] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 770] memfd_create("syzkaller", 0 [pid 769] +++ exited with 0 +++ [pid 768] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 767] +++ exited with 0 +++ [pid 766] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 765] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 764] <... futex resumed>) = 0 [pid 762] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 770] <... memfd_create resumed>) = 6 [pid 768] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 766] <... futex resumed>) = 0 [pid 765] <... futex resumed>) = 0 [pid 764] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 768] memfd_create("syzkaller", 0 [pid 765] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 766] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 762] exit_group(0 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=767, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 770] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 768] <... memfd_create resumed>) = 6 [pid 766] <... futex resumed>) = ? [pid 762] <... exit_group resumed>) = ? [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 770] <... mmap resumed>) = 0x7fe6f03b1000 [pid 768] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 766] +++ exited with 0 +++ [pid 773] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 773] memfd_create("syzkaller", 0) = 3 [pid 773] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 773] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 770] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 768] <... mmap resumed>) = 0x7fe6f03b1000 [pid 762] +++ exited with 0 +++ [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=762, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 770] <... write resumed>) = 131072 [pid 773] <... write resumed>) = 262144 [pid 773] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 773] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 773] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 773] ioctl(4, LOOP_CLR_FD) = 0 [pid 770] munmap(0x7fe6f03b1000, 138412032 [pid 768] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 770] <... munmap resumed>) = 0 [pid 768] <... write resumed>) = 131072 [pid 770] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 768] munmap(0x7fe6f03b1000, 138412032 [pid 770] <... openat resumed>) = 7 [pid 768] <... munmap resumed>) = 0 [pid 770] ioctl(7, LOOP_SET_FD, 6 [pid 768] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 770] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 768] <... openat resumed>) = 7 [pid 770] ioctl(7, LOOP_CLR_FD [pid 768] ioctl(7, LOOP_SET_FD, 6 [pid 770] <... ioctl resumed>) = 0 [pid 768] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 768] ioctl(7, LOOP_CLR_FD) = 0 [pid 773] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 773] close(4) = 0 [pid 773] close(3) = 0 [pid 773] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 772] <... futex resumed>) = 0 [pid 772] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 772] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 770] ioctl(7, LOOP_SET_FD, 6 [pid 773] <... futex resumed>) = 1 [pid 773] chdir("./file0" [pid 770] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 768] ioctl(7, LOOP_SET_FD, 6 [pid 770] close(7 [pid 768] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 773] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 770] <... close resumed>) = 0 [pid 768] close(7 [pid 770] close(6 [pid 768] <... close resumed>) = 0 [pid 773] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 772] <... futex resumed>) = 0 [pid 772] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 772] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 773] <... futex resumed>) = 1 [pid 773] creat("./bus", 000 [pid 770] <... close resumed>) = 0 [pid 768] close(6 [pid 770] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 773] <... creat resumed>) = 3 [pid 773] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 772] <... futex resumed>) = 0 [pid 772] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 772] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 770] <... futex resumed>) = 1 [pid 768] <... close resumed>) = 0 [pid 764] <... futex resumed>) = 0 [pid 770] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 768] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 770] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 764] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 773] <... futex resumed>) = 1 [pid 770] mknod(0x20000000, 000 [pid 768] <... futex resumed>) = 1 [pid 765] <... futex resumed>) = 0 [pid 764] <... futex resumed>) = 0 [pid 770] <... mknod resumed>) = -1 EEXIST (File exists) [pid 768] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 765] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 764] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 770] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 768] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 765] <... futex resumed>) = 0 [pid 764] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 770] <... futex resumed>) = 0 [pid 768] mknod(0x20000000, 000 [pid 765] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 770] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 768] <... mknod resumed>) = -1 EEXIST (File exists) [pid 764] exit_group(0 [pid 770] <... futex resumed>) = ? [pid 768] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 764] <... exit_group resumed>) = ? [pid 770] +++ exited with 0 +++ [pid 768] <... futex resumed>) = 1 [pid 765] <... futex resumed>) = 0 [pid 765] exit_group(0) = ? [pid 773] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 773] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 764] +++ exited with 0 +++ [pid 772] <... futex resumed>) = 0 [pid 772] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=764, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 772] <... futex resumed>) = 0 [pid 772] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 773] <... futex resumed>) = 1 [pid 773] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 304] <... restart_syscall resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 768] +++ exited with 0 +++ [pid 765] +++ exited with 0 +++ [pid 304] <... openat resumed>) = 3 [pid 303] <... openat resumed>) = 3 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 304] ioctl(3, LOOP_CLR_FD [pid 303] ioctl(3, LOOP_CLR_FD [pid 306] <... openat resumed>) = 3 [pid 304] <... ioctl resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 304] close(3 [pid 303] close(3 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=765, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] <... ioctl resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 306] close(3 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 773] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 306] <... close resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 774 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 775 [pid 773] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 772] <... futex resumed>) = 0 [pid 772] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 776 [pid 772] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 773] <... futex resumed>) = 1 [pid 773] open("./bus", O_RDWR|O_SYNC|O_DIRECT./strace-static-x86_64: Process 776 attached ) = 5 [pid 773] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 772] <... futex resumed>) = 0 [pid 772] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 772] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 773] <... futex resumed>) = 1 [pid 776] set_robust_list(0x5555636e06a0, 24 [pid 773] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0./strace-static-x86_64: Process 775 attached ./strace-static-x86_64: Process 774 attached [pid 776] <... set_robust_list resumed>) = 0 [pid 773] <... mmap resumed>) = 0x20000000 [pid 773] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 772] <... futex resumed>) = 0 [pid 772] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 772] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 773] <... futex resumed>) = 1 [pid 773] memfd_create("syzkaller", 0 [pid 776] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 773] <... memfd_create resumed>) = 6 [pid 773] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 776] <... prctl resumed>) = 0 [pid 775] set_robust_list(0x5555636e06a0, 24 [pid 774] set_robust_list(0x5555636e06a0, 24 [pid 773] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 773] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 773] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 7 [pid 773] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 773] ioctl(7, LOOP_CLR_FD) = 0 [pid 773] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 773] close(7) = 0 [pid 776] setpgid(0, 0 [pid 775] <... set_robust_list resumed>) = 0 [pid 774] <... set_robust_list resumed>) = 0 [pid 773] close(6 [pid 302] <... restart_syscall resumed>) = 0 [pid 776] <... setpgid resumed>) = 0 [pid 775] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 774] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 773] <... close resumed>) = 0 [pid 776] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 775] <... prctl resumed>) = 0 [pid 774] <... prctl resumed>) = 0 [pid 773] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 776] <... openat resumed>) = 3 [pid 776] write(3, "1000", 4 [pid 775] setpgid(0, 0 [pid 774] setpgid(0, 0 [pid 773] <... futex resumed>) = 1 [pid 772] <... futex resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 772] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 776] <... write resumed>) = 4 [pid 775] <... setpgid resumed>) = 0 [pid 774] <... setpgid resumed>) = 0 [pid 773] mknod(0x20000000, 000 [pid 772] <... futex resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 772] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 776] close(3 [pid 775] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 774] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 773] <... mknod resumed>) = -1 EEXIST (File exists) [pid 302] <... ioctl resumed>) = 0 [pid 776] <... close resumed>) = 0 [pid 775] <... openat resumed>) = 3 [pid 774] <... openat resumed>) = 3 [pid 773] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] close(3 [pid 776] write(1, "executing program\n", 18 [pid 775] write(3, "1000", 4 [pid 774] write(3, "1000", 4 [pid 773] <... futex resumed>) = 1 [pid 772] <... futex resumed>) = 0 [pid 302] <... close resumed>) = 0 [pid 772] exit_group(0) = ? executing program [pid 776] <... write resumed>) = 18 [pid 775] <... write resumed>) = 4 [pid 774] <... write resumed>) = 4 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 776] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 775] close(3 [pid 774] close(3 [pid 773] +++ exited with 0 +++ [pid 772] +++ exited with 0 +++ [pid 776] <... futex resumed>) = 0 [pid 775] <... close resumed>) = 0 [pid 774] <... close resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=772, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 777 [pid 776] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 775] write(1, "executing program\n", 18 [pid 774] write(1, "executing program\n", 18 [pid 305] restart_syscall(<... resuming interrupted clone ...>executing program executing program [pid 776] <... rt_sigaction resumed>NULL, 8) = 0 [pid 775] <... write resumed>) = 18 [pid 774] <... write resumed>) = 18 [pid 305] <... restart_syscall resumed>) = 0 [pid 776] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 775] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 774] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 777 attached [pid 776] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 775] <... futex resumed>) = 0 [pid 774] <... futex resumed>) = 0 [pid 777] set_robust_list(0x5555636e06a0, 24) = 0 [pid 777] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 776] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 775] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 774] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 777] <... prctl resumed>) = 0 [pid 777] setpgid(0, 0 [pid 776] <... mmap resumed>) = 0x7fe6f87b1000 [pid 775] <... rt_sigaction resumed>NULL, 8) = 0 [pid 774] <... rt_sigaction resumed>NULL, 8) = 0 [pid 305] <... openat resumed>) = 3 [pid 777] <... setpgid resumed>) = 0 [pid 777] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 776] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 775] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 774] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 305] ioctl(3, LOOP_CLR_FD [pid 777] <... openat resumed>) = 3 [pid 776] <... mprotect resumed>) = 0 [pid 775] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 774] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 777] write(3, "1000", 4) = 4 [pid 777] close(3) = 0 [pid 777] write(1, "executing program\n", 18 [pid 776] rt_sigprocmask(SIG_BLOCK, ~[], [pid 775] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 774] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 305] close(3executing program [pid 777] <... write resumed>) = 18 [pid 777] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 777] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 305] <... close resumed>) = 0 [pid 774] <... mmap resumed>) = 0x7fe6f87b1000 [pid 777] <... rt_sigaction resumed>NULL, 8) = 0 [pid 777] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 777] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 777] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 777] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 777] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[778]}, 88) = 778 [pid 777] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 777] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 777] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 776] <... rt_sigprocmask resumed>[], 8) = 0 [pid 775] <... mmap resumed>) = 0x7fe6f87b1000 [pid 774] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 775] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 774] <... mprotect resumed>) = 0 [pid 776] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 775] <... mprotect resumed>) = 0 [pid 774] rt_sigprocmask(SIG_BLOCK, ~[], [pid 775] rt_sigprocmask(SIG_BLOCK, ~[], [pid 774] <... rt_sigprocmask resumed>[], 8) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 779 [pid 776] <... clone3 resumed> => {parent_tid=[780]}, 88) = 780 [pid 775] <... rt_sigprocmask resumed>[], 8) = 0 [pid 776] rt_sigprocmask(SIG_SETMASK, [], [pid 775] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 774] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 776] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 776] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 775] <... clone3 resumed> => {parent_tid=[782]}, 88) = 782 [pid 774] <... clone3 resumed> => {parent_tid=[781]}, 88) = 781 [pid 776] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 775] rt_sigprocmask(SIG_SETMASK, [], [pid 774] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 780 attached [pid 780] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 780] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 775] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 774] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 780] memfd_create("syzkaller", 0 [pid 775] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 774] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 781 attached [pid 775] <... futex resumed>) = 0 [pid 774] <... futex resumed>) = 0 ./strace-static-x86_64: Process 782 attached [pid 782] set_robust_list(0x7fe6f87d19a0, 24 [pid 775] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 774] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 782] <... set_robust_list resumed>) = 0 [pid 782] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 780] <... memfd_create resumed>) = 3 ./strace-static-x86_64: Process 779 attached [pid 782] memfd_create("syzkaller", 0 [pid 781] set_robust_list(0x7fe6f87d19a0, 24 [pid 780] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 781] <... set_robust_list resumed>) = 0 [pid 780] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 779] set_robust_list(0x5555636e06a0, 24 [pid 782] <... memfd_create resumed>) = 3 [pid 782] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 781] rt_sigprocmask(SIG_SETMASK, [], [pid 779] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 778 attached [pid 778] set_robust_list(0x7fe6f87d19a0, 24 [pid 781] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 782] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 781] memfd_create("syzkaller", 0 [pid 779] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 778] <... set_robust_list resumed>) = 0 [pid 778] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 781] <... memfd_create resumed>) = 3 [pid 779] <... prctl resumed>) = 0 [pid 778] memfd_create("syzkaller", 0) = 3 [pid 778] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 781] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 779] setpgid(0, 0 [pid 778] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 781] <... mmap resumed>) = 0x7fe6f03b1000 [pid 779] <... setpgid resumed>) = 0 [pid 781] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 779] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 780] <... write resumed>) = 262144 [pid 779] <... openat resumed>) = 3 [pid 782] <... write resumed>) = 262144 [pid 781] <... write resumed>) = 262144 [pid 779] write(3, "1000", 4 [pid 781] munmap(0x7fe6f03b1000, 138412032 [pid 779] <... write resumed>) = 4 [pid 778] <... write resumed>) = 262144 [pid 781] <... munmap resumed>) = 0 [pid 779] close(3 [pid 780] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 780] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 781] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 779] <... close resumed>) = 0 [pid 782] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 779] write(1, "executing program\n", 18 [pid 781] <... openat resumed>) = 4 [pid 780] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 780] ioctl(4, LOOP_CLR_FD) = 0 [pid 782] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 782] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) executing program [pid 778] munmap(0x7fe6f03b1000, 138412032 [pid 782] ioctl(4, LOOP_CLR_FD [pid 779] <... write resumed>) = 18 [pid 778] <... munmap resumed>) = 0 [pid 782] <... ioctl resumed>) = 0 [pid 781] ioctl(4, LOOP_SET_FD, 3 [pid 779] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 778] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 779] <... futex resumed>) = 0 [pid 778] <... openat resumed>) = 4 [pid 781] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 778] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 778] ioctl(4, LOOP_CLR_FD) = 0 [pid 780] ioctl(4, LOOP_SET_FD, 3 [pid 779] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 781] ioctl(4, LOOP_CLR_FD [pid 780] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 780] close(4) = 0 [pid 780] close(3 [pid 781] <... ioctl resumed>) = 0 [pid 780] <... close resumed>) = 0 [pid 779] <... rt_sigaction resumed>NULL, 8) = 0 [pid 782] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 782] close(4) = 0 [pid 782] close(3) = 0 [pid 780] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 780] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 782] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 782] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 776] <... futex resumed>) = 0 [pid 775] <... futex resumed>) = 0 [pid 779] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 776] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 775] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 778] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 778] close(4) = 0 [pid 778] close(3 [pid 779] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 778] <... close resumed>) = 0 [pid 776] <... futex resumed>) = 1 [pid 775] <... futex resumed>) = 1 [pid 780] <... futex resumed>) = 0 [pid 780] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 779] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 776] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 775] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 782] <... futex resumed>) = 0 [pid 780] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 776] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 779] <... mmap resumed>) = 0x7fe6f87b1000 [pid 776] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 779] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 782] chdir("./file0" [pid 780] <... futex resumed>) = 0 [pid 778] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 779] <... mprotect resumed>) = 0 [pid 776] <... futex resumed>) = 0 [pid 782] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 780] creat("./bus", 000 [pid 779] rt_sigprocmask(SIG_BLOCK, ~[], [pid 778] <... futex resumed>) = 1 [pid 777] <... futex resumed>) = 0 [pid 776] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 779] <... rt_sigprocmask resumed>[], 8) = 0 [pid 777] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 779] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 777] <... futex resumed>) = 0 [pid 777] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 782] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 780] <... creat resumed>) = 3 [pid 778] chdir("./file0" [pid 782] <... futex resumed>) = 1 [pid 780] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 779] <... clone3 resumed> => {parent_tid=[783]}, 88) = 783 [pid 778] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 775] <... futex resumed>) = 0 [pid 781] ioctl(4, LOOP_SET_FD, 3 [pid 779] rt_sigprocmask(SIG_SETMASK, [], [pid 775] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 781] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 779] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 775] <... futex resumed>) = 0 [pid 781] close(4 [pid 779] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 775] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 781] <... close resumed>) = 0 [pid 779] <... futex resumed>) = 0 [pid 782] creat("./bus", 000 [pid 781] close(3 [pid 780] <... futex resumed>) = 1 [pid 779] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 778] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 776] <... futex resumed>) = 0 [pid 782] <... creat resumed>) = 3 [pid 780] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 778] <... futex resumed>) = 1 [pid 777] <... futex resumed>) = 0 [pid 777] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 777] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 782] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 781] <... close resumed>) = 0 [pid 778] creat("./bus", 000 [pid 776] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 782] <... futex resumed>) = 1 [pid 781] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 778] <... creat resumed>) = 3 [pid 775] <... futex resumed>) = 0 [pid 782] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 778] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 777] <... futex resumed>) = 0 [pid 778] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 777] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 778] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 777] <... futex resumed>) = 0 [pid 778] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 777] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 783 attached [pid 781] <... futex resumed>) = 1 [pid 780] <... futex resumed>) = 0 [pid 778] <... openat resumed>) = 4 [pid 776] <... futex resumed>) = 1 [pid 775] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 774] <... futex resumed>) = 0 [pid 780] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 778] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 783] set_robust_list(0x7fe6f87d19a0, 24 [pid 782] <... futex resumed>) = 0 [pid 781] chdir("./file0" [pid 780] <... openat resumed>) = 4 [pid 778] <... futex resumed>) = 1 [pid 777] <... futex resumed>) = 0 [pid 776] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 775] <... futex resumed>) = 1 [pid 774] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 782] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 780] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 778] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 777] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 783] <... set_robust_list resumed>) = 0 [pid 782] <... openat resumed>) = 4 [pid 781] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 780] <... futex resumed>) = 0 [pid 778] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 777] <... futex resumed>) = 0 [pid 776] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 775] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 774] <... futex resumed>) = 0 [pid 783] rt_sigprocmask(SIG_SETMASK, [], [pid 782] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 781] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 780] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 778] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 777] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 776] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 783] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 782] <... futex resumed>) = 0 [pid 781] <... futex resumed>) = 0 [pid 780] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 778] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 775] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 774] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 782] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 780] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 778] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 783] memfd_create("syzkaller", 0 [pid 781] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 780] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 778] <... futex resumed>) = 1 [pid 777] <... futex resumed>) = 0 [pid 776] <... futex resumed>) = 0 [pid 775] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 774] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 780] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 778] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 777] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 780] <... futex resumed>) = 0 [pid 778] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 777] <... futex resumed>) = 0 [pid 780] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 778] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 777] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 783] <... memfd_create resumed>) = 3 [pid 782] <... futex resumed>) = 0 [pid 778] <... open resumed>) = 5 [pid 776] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 775] <... futex resumed>) = 1 [pid 774] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 782] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 778] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 776] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 775] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 774] <... futex resumed>) = 1 [pid 781] <... futex resumed>) = 0 [pid 783] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 782] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 778] <... futex resumed>) = 1 [pid 777] <... futex resumed>) = 0 [pid 783] <... mmap resumed>) = 0x7fe6f03b1000 [pid 782] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 781] creat("./bus", 000 [pid 778] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 777] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 776] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 774] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 782] <... futex resumed>) = 1 [pid 778] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 777] <... futex resumed>) = 0 [pid 782] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 778] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 777] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 781] <... creat resumed>) = 3 [pid 780] <... futex resumed>) = 0 [pid 778] <... mmap resumed>) = 0x20000000 [pid 776] <... futex resumed>) = 1 [pid 775] <... futex resumed>) = 0 [pid 780] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 778] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 780] <... open resumed>) = 5 [pid 778] <... futex resumed>) = 1 [pid 777] <... futex resumed>) = 0 [pid 780] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 778] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 777] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 780] <... futex resumed>) = 0 [pid 778] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 777] <... futex resumed>) = 0 [pid 780] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 778] memfd_create("syzkaller", 0 [pid 777] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 778] <... memfd_create resumed>) = 6 [pid 778] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 783] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 781] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 778] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 776] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 775] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 781] <... futex resumed>) = 1 [pid 778] <... write resumed>) = 131072 [pid 776] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 774] <... futex resumed>) = 0 [pid 778] munmap(0x7fe6f03b1000, 138412032 [pid 782] <... futex resumed>) = 0 [pid 778] <... munmap resumed>) = 0 [pid 775] <... futex resumed>) = 1 [pid 774] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 781] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 776] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 782] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 778] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 775] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 782] <... open resumed>) = 5 [pid 778] <... openat resumed>) = 7 [pid 774] <... futex resumed>) = 0 [pid 781] <... openat resumed>) = 4 [pid 782] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 780] <... futex resumed>) = 0 [pid 778] ioctl(7, LOOP_SET_FD, 6 [pid 776] <... futex resumed>) = 1 [pid 783] <... write resumed>) = 262144 [pid 782] <... futex resumed>) = 1 [pid 781] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 780] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 778] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 775] <... futex resumed>) = 0 [pid 774] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 782] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 780] <... mmap resumed>) = 0x20000000 [pid 778] ioctl(7, LOOP_CLR_FD [pid 781] <... futex resumed>) = 0 [pid 780] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 778] <... ioctl resumed>) = 0 [pid 776] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 775] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 774] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 783] munmap(0x7fe6f03b1000, 138412032 [pid 781] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 780] <... futex resumed>) = 0 [pid 780] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 782] <... futex resumed>) = 0 [pid 781] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 776] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 775] <... futex resumed>) = 1 [pid 774] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 783] <... munmap resumed>) = 0 [pid 782] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 783] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 782] <... mmap resumed>) = 0x20000000 [pid 781] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 776] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 775] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 774] <... futex resumed>) = 0 [pid 782] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 778] ioctl(7, LOOP_SET_FD, 6 [pid 783] <... openat resumed>) = 4 [pid 782] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 781] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 780] <... futex resumed>) = 0 [pid 778] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 776] <... futex resumed>) = 1 [pid 775] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 774] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 783] ioctl(4, LOOP_SET_FD, 3 [pid 780] memfd_create("syzkaller", 0 [pid 778] close(7 [pid 780] <... memfd_create resumed>) = 6 [pid 778] <... close resumed>) = 0 [pid 783] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 781] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 780] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 778] close(6 [pid 776] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 775] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 780] <... mmap resumed>) = 0x7fe6f03b1000 [pid 778] <... close resumed>) = 0 [pid 782] <... futex resumed>) = 0 [pid 780] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 778] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 775] <... futex resumed>) = 1 [pid 783] ioctl(4, LOOP_CLR_FD [pid 782] memfd_create("syzkaller", 0 [pid 781] <... futex resumed>) = 1 [pid 780] <... write resumed>) = 131072 [pid 778] <... futex resumed>) = 1 [pid 777] <... futex resumed>) = 0 [pid 774] <... futex resumed>) = 0 [pid 783] <... ioctl resumed>) = 0 [pid 782] <... memfd_create resumed>) = 6 [pid 780] munmap(0x7fe6f03b1000, 138412032 [pid 778] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 777] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 775] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 782] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 781] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 780] <... munmap resumed>) = 0 [pid 778] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 777] <... futex resumed>) = 0 [pid 774] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 782] <... mmap resumed>) = 0x7fe6f03b1000 [pid 781] <... open resumed>) = 5 [pid 780] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 778] mknod(0x20000000, 000 [pid 777] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 774] <... futex resumed>) = 0 [pid 783] ioctl(4, LOOP_SET_FD, 3 [pid 782] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 780] <... openat resumed>) = 7 [pid 778] <... mknod resumed>) = -1 EEXIST (File exists) [pid 783] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 782] <... write resumed>) = 131072 [pid 781] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 780] ioctl(7, LOOP_SET_FD, 6 [pid 778] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 774] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 782] munmap(0x7fe6f03b1000, 138412032 [pid 780] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 778] <... futex resumed>) = 1 [pid 777] <... futex resumed>) = 0 [pid 783] close(4 [pid 782] <... munmap resumed>) = 0 [pid 781] <... futex resumed>) = 0 [pid 780] ioctl(7, LOOP_CLR_FD [pid 778] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 777] exit_group(0 [pid 774] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 782] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 780] <... ioctl resumed>) = 0 [pid 778] <... futex resumed>) = ? [pid 777] <... exit_group resumed>) = ? [pid 783] <... close resumed>) = 0 [pid 782] <... openat resumed>) = 7 [pid 781] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 778] +++ exited with 0 +++ [pid 777] +++ exited with 0 +++ [pid 774] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 783] close(3 [pid 782] ioctl(7, LOOP_SET_FD, 6 [pid 781] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 782] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 780] ioctl(7, LOOP_SET_FD, 6 [pid 782] ioctl(7, LOOP_CLR_FD [pid 780] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 782] <... ioctl resumed>) = 0 [pid 780] close(7) = 0 [pid 780] close(6 [pid 774] <... futex resumed>) = 0 [pid 780] <... close resumed>) = 0 [pid 780] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 780] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 783] <... close resumed>) = 0 [pid 781] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 776] <... futex resumed>) = 0 [pid 774] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 783] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 782] ioctl(7, LOOP_SET_FD, 6 [pid 776] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 782] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 782] close(7) = 0 [pid 782] close(6 [pid 783] <... futex resumed>) = 1 [pid 782] <... close resumed>) = 0 [pid 781] <... mmap resumed>) = 0x20000000 [pid 780] <... futex resumed>) = 0 [pid 779] <... futex resumed>) = 0 [pid 776] <... futex resumed>) = 1 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=777, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 783] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 782] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 781] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 780] mknod(0x20000000, 000 [pid 783] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 782] <... futex resumed>) = 1 [pid 780] <... mknod resumed>) = -1 EEXIST (File exists) [pid 779] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 776] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 775] <... futex resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 783] chdir("./file0" [pid 782] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 781] <... futex resumed>) = 1 [pid 780] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 779] <... futex resumed>) = 0 [pid 776] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 775] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 774] <... futex resumed>) = 0 [pid 783] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 782] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 781] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 780] <... futex resumed>) = 0 [pid 779] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 776] exit_group(0 [pid 774] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 783] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 782] mknod(0x20000000, 000 [pid 781] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 779] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 776] <... exit_group resumed>) = ? [pid 775] <... futex resumed>) = 0 [pid 774] <... futex resumed>) = 0 [pid 783] <... futex resumed>) = 0 [pid 782] <... mknod resumed>) = -1 EEXIST (File exists) [pid 781] memfd_create("syzkaller", 0 [pid 780] +++ exited with 0 +++ [pid 779] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 782] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 782] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 783] creat("./bus", 000 [pid 781] <... memfd_create resumed>) = 6 [pid 779] <... futex resumed>) = 0 [pid 776] +++ exited with 0 +++ [pid 775] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 774] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 783] <... creat resumed>) = 3 [pid 775] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=776, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 779] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 783] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 781] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 779] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 775] exit_group(0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 783] <... futex resumed>) = 0 [pid 782] <... futex resumed>) = ? [pid 781] <... mmap resumed>) = 0x7fe6f03b1000 [pid 779] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 775] <... exit_group resumed>) = ? [pid 783] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 782] +++ exited with 0 +++ [pid 783] <... openat resumed>) = 4 [pid 781] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 779] <... futex resumed>) = 0 [pid 775] +++ exited with 0 +++ [pid 302] <... restart_syscall resumed>) = 0 [pid 783] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 779] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=775, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 783] <... futex resumed>) = 0 [pid 781] <... write resumed>) = 131072 [pid 779] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 783] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 779] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 783] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 779] <... futex resumed>) = 0 [pid 783] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 781] munmap(0x7fe6f03b1000, 138412032 [pid 779] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 783] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 781] <... munmap resumed>) = 0 [pid 783] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] ioctl(3, LOOP_CLR_FD [pid 783] <... futex resumed>) = 1 [pid 779] <... futex resumed>) = 0 [pid 783] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 781] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 779] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... ioctl resumed>) = 0 [pid 783] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 781] <... openat resumed>) = 7 [pid 779] <... futex resumed>) = 0 [pid 302] close(3 [pid 783] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 781] ioctl(7, LOOP_SET_FD, 6 [pid 779] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 783] <... open resumed>) = 5 [pid 781] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 302] <... close resumed>) = 0 [pid 783] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 781] ioctl(7, LOOP_CLR_FD [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 783] <... futex resumed>) = 1 [pid 779] <... futex resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 779] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 783] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 784 [pid 781] <... ioctl resumed>) = 0 [pid 779] <... futex resumed>) = 0 [pid 783] <... mmap resumed>) = 0x20000000 [pid 779] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 783] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 779] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 783] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 779] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 783] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 779] <... futex resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 783] memfd_create("syzkaller", 0 [pid 779] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 306] ioctl(3, LOOP_CLR_FD [pid 783] <... memfd_create resumed>) = 6 [pid 306] <... ioctl resumed>) = 0 [pid 783] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 306] close(3 [pid 783] <... mmap resumed>) = 0x7fe6f03b1000 [pid 306] <... close resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 783] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 781] ioctl(7, LOOP_SET_FD, 6 [pid 303] <... openat resumed>) = 3 [pid 303] ioctl(3, LOOP_CLR_FD) = 0 [pid 303] close(3) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 783] <... write resumed>) = 131072 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 785 [pid 783] munmap(0x7fe6f03b1000, 138412032 [pid 781] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 786 [pid 781] close(7 [pid 783] <... munmap resumed>) = 0 [pid 781] <... close resumed>) = 0 [pid 783] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 781] close(6) = 0 [pid 783] <... openat resumed>) = 7 [pid 781] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 774] <... futex resumed>) = 0 [pid 783] ioctl(7, LOOP_SET_FD, 6 [pid 781] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 774] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 783] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 781] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 774] <... futex resumed>) = 0 [pid 783] ioctl(7, LOOP_CLR_FD [pid 781] mknod(0x20000000, 000 [pid 774] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 783] <... ioctl resumed>) = 0 [pid 781] <... mknod resumed>) = -1 EEXIST (File exists) [pid 781] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 774] <... futex resumed>) = 0 [pid 781] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 774] exit_group(0 [pid 783] ioctl(7, LOOP_SET_FD, 6./strace-static-x86_64: Process 784 attached [pid 781] <... futex resumed>) = ? [pid 774] <... exit_group resumed>) = ? [pid 783] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 781] +++ exited with 0 +++ [pid 774] +++ exited with 0 +++ [pid 784] set_robust_list(0x5555636e06a0, 24 [pid 783] close(7 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=774, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 784] <... set_robust_list resumed>) = 0 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 784] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 783] <... close resumed>) = 0 [pid 784] <... prctl resumed>) = 0 [pid 784] setpgid(0, 0) = 0 [pid 784] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 783] close(6 [pid 784] <... openat resumed>) = 3 [pid 784] write(3, "1000", 4) = 4 [pid 784] close(3) = 0 [pid 784] write(1, "executing program\n", 18 [pid 783] <... close resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 783] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 784] <... write resumed>) = 18 [pid 784] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 783] <... futex resumed>) = 1 [pid 779] <... futex resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 783] mknod(0x20000000, 000 [pid 779] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... openat resumed>) = 3 [pid 783] <... mknod resumed>) = -1 EEXIST (File exists) [pid 779] <... futex resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 779] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 783] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... ioctl resumed>) = 0 [pid 779] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 783] <... futex resumed>) = 0 [pid 304] close(3 [pid 779] exit_group(0 [pid 784] <... futex resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 779] <... exit_group resumed>) = ? [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 784] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 784] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 784] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 784] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 784] rt_sigprocmask(SIG_BLOCK, ~[], [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 787 [pid 784] <... rt_sigprocmask resumed>[], 8) = 0 [pid 784] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[788]}, 88) = 788 [pid 784] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 784] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 784] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 783] +++ exited with 0 +++ [pid 779] +++ exited with 0 +++ ./strace-static-x86_64: Process 785 attached [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=779, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 785] set_robust_list(0x5555636e06a0, 24 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 785] <... set_robust_list resumed>) = 0 [pid 785] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 785] setpgid(0, 0) = 0 [pid 785] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 785] write(3, "1000", 4executing program ) = 4 ./strace-static-x86_64: Process 786 attached [pid 785] close(3) = 0 [pid 785] write(1, "executing program\n", 18) = 18 [pid 785] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 785] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 785] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 785] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 785] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 785] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 785] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[789]}, 88) = 789 [pid 785] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 785] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 785] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 788 attached [pid 788] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 788] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 788] memfd_create("syzkaller", 0) = 3 [pid 788] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 786] set_robust_list(0x5555636e06a0, 24./strace-static-x86_64: Process 787 attached ) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 787] set_robust_list(0x5555636e06a0, 24 [pid 786] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 787] <... set_robust_list resumed>) = 0 [pid 786] <... prctl resumed>) = 0 [pid 787] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 786] setpgid(0, 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 787] <... prctl resumed>) = 0 [pid 786] <... setpgid resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 787] setpgid(0, 0 [pid 786] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 305] ioctl(3, LOOP_CLR_FD) = 0 [pid 305] close(3 [pid 786] <... openat resumed>) = 3 [pid 787] <... setpgid resumed>) = 0 [pid 786] write(3, "1000", 4 [pid 305] <... close resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 786] <... write resumed>) = 4 [pid 788] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 786] close(3 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 790 executing program [pid 787] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 786] <... close resumed>) = 0 [pid 787] <... openat resumed>) = 3 [pid 787] write(3, "1000", 4 [pid 786] write(1, "executing program\n", 18) = 18 [pid 786] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 787] <... write resumed>) = 4 [pid 786] <... futex resumed>) = 0 [pid 787] close(3) = 0 [pid 786] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, ./strace-static-x86_64: Process 789 attached NULL, 8) = 0 [pid 787] write(1, "executing program\n", 18 [pid 789] set_robust_list(0x7fe6f87d19a0, 24executing program [pid 786] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 787] <... write resumed>) = 18 [pid 786] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 787] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 786] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 787] <... futex resumed>) = 0 [pid 786] <... mmap resumed>) = 0x7fe6f87b1000 [pid 787] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 786] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 789] <... set_robust_list resumed>) = 0 [pid 786] <... mprotect resumed>) = 0 [pid 787] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 789] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 787] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 786] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 787] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 788] <... write resumed>) = 262144 [pid 787] <... mmap resumed>) = 0x7fe6f87b1000 [pid 786] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 788] munmap(0x7fe6f03b1000, 138412032 [pid 787] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 788] <... munmap resumed>) = 0 [pid 786] <... clone3 resumed> => {parent_tid=[791]}, 88) = 791 [pid 787] <... mprotect resumed>) = 0 [pid 789] memfd_create("syzkaller", 0 [pid 786] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 787] rt_sigprocmask(SIG_BLOCK, ~[], [pid 786] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 788] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 789] <... memfd_create resumed>) = 3 [pid 787] <... rt_sigprocmask resumed>[], 8) = 0 [pid 786] <... futex resumed>) = 0 [pid 788] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 788] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 790 attached [pid 789] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 787] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 786] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 790] set_robust_list(0x5555636e06a0, 24) = 0 [pid 790] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 790] setpgid(0, 0) = 0 [pid 790] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 789] <... mmap resumed>) = 0x7fe6f03b1000 [pid 787] <... clone3 resumed> => {parent_tid=[792]}, 88) = 792 [pid 787] rt_sigprocmask(SIG_SETMASK, [], [pid 788] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 788] close(4) = 0 [pid 788] close(3executing program ) = 0 [pid 787] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 788] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 787] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 784] <... futex resumed>) = 0 [pid 787] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 784] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 784] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 790] <... openat resumed>) = 3 [pid 788] <... futex resumed>) = 1 [pid 788] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 788] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 784] <... futex resumed>) = 0 [pid 784] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 784] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 788] <... futex resumed>) = 1 [pid 788] creat("./bus", 000) = 3 [pid 790] write(3, "1000", 4) = 4 [pid 790] close(3) = 0 [pid 790] write(1, "executing program\n", 18 [pid 788] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 790] <... write resumed>) = 18 [pid 784] <... futex resumed>) = 0 [pid 784] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 784] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 788] <... futex resumed>) = 1 [pid 790] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 788] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 790] <... futex resumed>) = 0 [pid 790] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 789] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 790] <... rt_sigaction resumed>NULL, 8) = 0 [pid 790] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 790] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 790] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 788] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 790] rt_sigprocmask(SIG_BLOCK, ~[], [pid 784] <... futex resumed>) = 0 [pid 784] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 784] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 788] <... futex resumed>) = 1 [pid 788] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 790] <... rt_sigprocmask resumed>[], 8) = 0 [pid 789] <... write resumed>) = 262144 [pid 790] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0}./strace-static-x86_64: Process 791 attached [pid 788] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 788] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 784] <... futex resumed>) = 0 [pid 784] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 788] <... futex resumed>) = 1 [pid 784] <... futex resumed>) = 0 [pid 788] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 784] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 790] <... clone3 resumed> => {parent_tid=[793]}, 88) = 793 [pid 788] <... open resumed>) = 5 [pid 790] rt_sigprocmask(SIG_SETMASK, [], [pid 788] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 790] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 788] <... futex resumed>) = 1 [pid 784] <... futex resumed>) = 0 ./strace-static-x86_64: Process 792 attached [pid 791] set_robust_list(0x7fe6f87d19a0, 24 [pid 790] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 789] munmap(0x7fe6f03b1000, 138412032 [pid 788] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 784] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 792] set_robust_list(0x7fe6f87d19a0, 24 [pid 791] <... set_robust_list resumed>) = 0 [pid 790] <... futex resumed>) = 0 [pid 789] <... munmap resumed>) = 0 [pid 788] <... mmap resumed>) = 0x20000000 [pid 784] <... futex resumed>) = 0 [pid 790] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 788] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 784] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 788] <... futex resumed>) = 0 [pid 784] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 792] <... set_robust_list resumed>) = 0 [pid 791] rt_sigprocmask(SIG_SETMASK, [], [pid 789] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 788] memfd_create("syzkaller", 0 [pid 784] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 792] rt_sigprocmask(SIG_SETMASK, [], [pid 788] <... memfd_create resumed>) = 6 [pid 784] <... futex resumed>) = 0 [pid 788] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 784] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 788] <... mmap resumed>) = 0x7fe6f03b1000 [pid 792] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 791] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 789] <... openat resumed>) = 4 [pid 788] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 792] memfd_create("syzkaller", 0 [pid 791] memfd_create("syzkaller", 0 [pid 789] ioctl(4, LOOP_SET_FD, 3 [pid 788] <... write resumed>) = 131072 [pid 788] munmap(0x7fe6f03b1000, 138412032 [pid 792] <... memfd_create resumed>) = 3 [pid 791] <... memfd_create resumed>) = 3 [pid 789] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 788] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 793 attached [pid 788] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 793] set_robust_list(0x7fe6f87d19a0, 24 [pid 792] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 791] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 789] ioctl(4, LOOP_CLR_FD [pid 788] <... openat resumed>) = 7 [pid 793] <... set_robust_list resumed>) = 0 [pid 793] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 793] memfd_create("syzkaller", 0 [pid 791] <... mmap resumed>) = 0x7fe6f03b1000 [pid 789] <... ioctl resumed>) = 0 [pid 792] <... mmap resumed>) = 0x7fe6f03b1000 [pid 788] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 788] ioctl(7, LOOP_CLR_FD [pid 793] <... memfd_create resumed>) = 3 [pid 788] <... ioctl resumed>) = 0 [pid 793] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 791] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 788] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 788] close(7) = 0 [pid 788] close(6) = 0 [pid 788] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 784] <... futex resumed>) = 0 [pid 788] mknod(0x20000000, 000 [pid 784] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 788] <... mknod resumed>) = -1 EEXIST (File exists) [pid 784] <... futex resumed>) = 0 [pid 788] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 784] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 788] <... futex resumed>) = 0 [pid 784] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 788] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 784] exit_group(0 [pid 788] <... futex resumed>) = ? [pid 784] <... exit_group resumed>) = ? [pid 788] +++ exited with 0 +++ [pid 784] +++ exited with 0 +++ [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=784, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 789] ioctl(4, LOOP_SET_FD, 3 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 793] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 789] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 793] <... write resumed>) = 262144 [pid 793] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 793] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 792] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 789] close(4 [pid 793] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 793] ioctl(4, LOOP_CLR_FD) = 0 [pid 789] <... close resumed>) = 0 [pid 791] <... write resumed>) = 262144 [pid 789] close(3 [pid 302] <... restart_syscall resumed>) = 0 [pid 791] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 791] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 791] <... openat resumed>) = 4 [pid 302] <... openat resumed>) = 3 [pid 791] ioctl(4, LOOP_SET_FD, 3 [pid 302] ioctl(3, LOOP_CLR_FD [pid 791] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 302] <... ioctl resumed>) = 0 [pid 791] ioctl(4, LOOP_CLR_FD [pid 302] close(3 [pid 791] <... ioctl resumed>) = 0 [pid 302] <... close resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 793] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 793] close(4) = 0 [pid 793] close(3) = 0 [pid 789] <... close resumed>) = 0 [pid 793] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 789] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 794 [pid 790] <... futex resumed>) = 0 [pid 790] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 789] <... futex resumed>) = 1 [pid 785] <... futex resumed>) = 0 [pid 790] <... futex resumed>) = 0 [pid 790] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 789] chdir("./file0" [pid 785] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 791] ioctl(4, LOOP_SET_FD, 3 [pid 785] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 789] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 791] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 791] close(4) = 0 [pid 791] close(3) = 0 [pid 789] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 791] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 786] <... futex resumed>) = 0 [pid 789] <... futex resumed>) = 1 [pid 786] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 785] <... futex resumed>) = 0 [pid 789] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 786] <... futex resumed>) = 0 [pid 785] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 791] chdir("./file0" [pid 789] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 786] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 785] <... futex resumed>) = 0 [pid 789] creat("./bus", 000 [pid 785] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 793] <... futex resumed>) = 1 [pid 791] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 793] chdir("./file0" [pid 791] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 789] <... creat resumed>) = 3 [pid 793] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 791] <... futex resumed>) = 1 [pid 789] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 786] <... futex resumed>) = 0 [pid 793] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 791] creat("./bus", 000 [pid 786] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 789] <... futex resumed>) = 1 [pid 785] <... futex resumed>) = 0 [pid 786] <... futex resumed>) = 0 [pid 785] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 789] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 786] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 785] <... futex resumed>) = 0 [pid 793] <... futex resumed>) = 1 [pid 791] <... creat resumed>) = 3 [pid 790] <... futex resumed>) = 0 [pid 785] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 793] creat("./bus", 000 [pid 791] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 790] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 789] <... openat resumed>) = 4 [pid 793] <... creat resumed>) = 3 [pid 791] <... futex resumed>) = 1 [pid 790] <... futex resumed>) = 0 [pid 786] <... futex resumed>) = 0 [pid 793] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 791] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 790] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 786] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 789] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 793] <... futex resumed>) = 0 [pid 791] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 790] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 786] <... futex resumed>) = 0 [pid 793] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 791] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 790] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 789] <... futex resumed>) = 1 [pid 786] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 785] <... futex resumed>) = 0 [pid 793] <... openat resumed>) = 4 [pid 791] <... openat resumed>) = 4 [pid 790] <... futex resumed>) = 0 [pid 789] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 785] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 793] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 791] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 790] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 789] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 785] <... futex resumed>) = 0 [pid 793] <... futex resumed>) = 0 [pid 791] <... futex resumed>) = 1 [pid 790] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 789] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 786] <... futex resumed>) = 0 [pid 785] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 794 attached [pid 793] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 791] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 790] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 786] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 792] <... write resumed>) = 262144 [pid 789] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 793] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 791] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 790] <... futex resumed>) = 0 [pid 786] <... futex resumed>) = 0 [pid 794] set_robust_list(0x5555636e06a0, 24 [pid 793] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 791] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 790] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 794] <... set_robust_list resumed>) = 0 [pid 793] <... futex resumed>) = 0 [pid 791] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 790] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 794] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 793] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 791] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 790] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 794] <... prctl resumed>) = 0 [pid 793] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 791] <... futex resumed>) = 0 [pid 790] <... futex resumed>) = 0 [pid 794] setpgid(0, 0 [pid 793] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 791] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 790] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 794] <... setpgid resumed>) = 0 [pid 793] <... open resumed>) = 5 [pid 792] munmap(0x7fe6f03b1000, 138412032 [pid 789] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 786] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 794] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 793] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 786] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 794] <... openat resumed>) = 3 [pid 793] <... futex resumed>) = 1 [pid 792] <... munmap resumed>) = 0 [pid 790] <... futex resumed>) = 0 [pid 789] <... futex resumed>) = 1 [pid 786] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 785] <... futex resumed>) = 0 [pid 794] write(3, "1000", 4 [pid 793] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 792] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 791] <... futex resumed>) = 0 [pid 790] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 789] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 786] <... futex resumed>) = 1 [pid 785] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 794] <... write resumed>) = 4 [pid 793] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 792] <... openat resumed>) = 4 [pid 791] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 790] <... futex resumed>) = 0 [pid 789] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 786] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 785] <... futex resumed>) = 0 [pid 794] close(3 [pid 793] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 791] <... open resumed>) = 5 [pid 790] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 789] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 785] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 789] <... open resumed>) = 5 [pid 792] ioctl(4, LOOP_SET_FD, 3 [pid 789] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 792] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 789] <... futex resumed>) = 1 [pid 785] <... futex resumed>) = 0 [pid 792] ioctl(4, LOOP_CLR_FD [pid 789] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 785] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 792] <... ioctl resumed>) = 0 [pid 789] <... mmap resumed>) = 0x20000000 [pid 785] <... futex resumed>) = 0 [pid 789] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 785] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 789] <... futex resumed>) = 0 [pid 785] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 789] memfd_create("syzkaller", 0 [pid 785] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 789] <... memfd_create resumed>) = 6 [pid 785] <... futex resumed>) = 0 [pid 789] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 785] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 789] <... mmap resumed>) = 0x7fe6f03b1000 [pid 789] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 792] ioctl(4, LOOP_SET_FD, 3 [pid 791] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 789] <... write resumed>) = 131072 [pid 794] <... close resumed>) = 0 [pid 793] <... mmap resumed>) = 0x20000000 [pid 792] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 791] <... futex resumed>) = 1 [pid 789] munmap(0x7fe6f03b1000, 138412032 [pid 786] <... futex resumed>) = 0 executing program [pid 794] write(1, "executing program\n", 18 [pid 793] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 792] close(4 [pid 791] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 789] <... munmap resumed>) = 0 [pid 786] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 794] <... write resumed>) = 18 [pid 793] <... futex resumed>) = 1 [pid 792] <... close resumed>) = 0 [pid 791] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 790] <... futex resumed>) = 0 [pid 789] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 786] <... futex resumed>) = 0 [pid 794] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 793] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 792] close(3 [pid 791] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 790] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 789] <... openat resumed>) = 7 [pid 786] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 794] <... futex resumed>) = 0 [pid 793] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 792] <... close resumed>) = 0 [pid 791] <... mmap resumed>) = 0x20000000 [pid 790] <... futex resumed>) = 0 [pid 789] ioctl(7, LOOP_SET_FD, 6 [pid 794] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 793] memfd_create("syzkaller", 0 [pid 794] <... rt_sigaction resumed>NULL, 8) = 0 [pid 791] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 790] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 794] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 793] <... memfd_create resumed>) = 6 [pid 792] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 791] <... futex resumed>) = 1 [pid 789] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 786] <... futex resumed>) = 0 [pid 794] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 793] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 792] <... futex resumed>) = 1 [pid 791] memfd_create("syzkaller", 0 [pid 789] ioctl(7, LOOP_CLR_FD [pid 787] <... futex resumed>) = 0 [pid 786] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 794] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 793] <... mmap resumed>) = 0x7fe6f03b1000 [pid 792] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 789] <... ioctl resumed>) = 0 [pid 787] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 786] <... futex resumed>) = 0 [pid 792] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 791] <... memfd_create resumed>) = 6 [pid 787] <... futex resumed>) = 0 [pid 786] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 792] chdir("./file0" [pid 787] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 792] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 792] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 787] <... futex resumed>) = 0 [pid 793] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 792] creat("./bus", 000 [pid 787] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 794] <... mmap resumed>) = 0x7fe6f87b1000 [pid 793] <... write resumed>) = 131072 [pid 792] <... creat resumed>) = 3 [pid 791] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 787] <... futex resumed>) = 0 [pid 794] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 793] munmap(0x7fe6f03b1000, 138412032 [pid 792] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 791] <... mmap resumed>) = 0x7fe6f03b1000 [pid 789] ioctl(7, LOOP_SET_FD, 6 [pid 787] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 794] <... mprotect resumed>) = 0 [pid 793] <... munmap resumed>) = 0 [pid 792] <... futex resumed>) = 0 [pid 789] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 787] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 792] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 789] close(7 [pid 787] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 792] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 789] <... close resumed>) = 0 [pid 787] <... futex resumed>) = 0 [pid 792] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 789] close(6 [pid 787] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 794] rt_sigprocmask(SIG_BLOCK, ~[], [pid 793] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 792] <... openat resumed>) = 4 [pid 791] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 789] <... close resumed>) = 0 [pid 794] <... rt_sigprocmask resumed>[], 8) = 0 [pid 793] <... openat resumed>) = 7 [pid 792] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 789] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 794] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 793] ioctl(7, LOOP_SET_FD, 6 [pid 792] <... futex resumed>) = 1 [pid 791] <... write resumed>) = 131072 [pid 789] <... futex resumed>) = 1 [pid 787] <... futex resumed>) = 0 [pid 785] <... futex resumed>) = 0 [pid 793] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 792] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 791] munmap(0x7fe6f03b1000, 138412032 [pid 789] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 787] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 785] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 794] <... clone3 resumed> => {parent_tid=[795]}, 88) = 795 [pid 793] ioctl(7, LOOP_CLR_FD [pid 792] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 791] <... munmap resumed>) = 0 [pid 789] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 787] <... futex resumed>) = 0 [pid 785] <... futex resumed>) = 0 [pid 794] rt_sigprocmask(SIG_SETMASK, [], [pid 793] <... ioctl resumed>) = 0 [pid 792] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 791] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 789] mknod(0x20000000, 000 [pid 787] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 785] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 794] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 792] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 791] <... openat resumed>) = 7 [pid 789] <... mknod resumed>) = -1 EEXIST (File exists) [pid 794] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 792] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 789] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 792] <... futex resumed>) = 1 [pid 789] <... futex resumed>) = 1 [pid 787] <... futex resumed>) = 0 [pid 785] <... futex resumed>) = 0 [pid 792] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 789] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 787] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 785] exit_group(0 [pid 792] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 789] <... futex resumed>) = ? [pid 787] <... futex resumed>) = 0 [pid 785] <... exit_group resumed>) = ? [pid 792] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 789] +++ exited with 0 +++ [pid 787] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 785] +++ exited with 0 +++ [pid 792] <... open resumed>) = 5 [pid 792] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 787] <... futex resumed>) = 0 [pid 792] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 787] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 792] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 787] <... futex resumed>) = 0 [pid 794] <... futex resumed>) = 0 [pid 792] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 791] ioctl(7, LOOP_SET_FD, 6 [pid 787] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 794] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 793] ioctl(7, LOOP_SET_FD, 6 [pid 792] <... mmap resumed>) = 0x20000000 [pid 791] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=785, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 793] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 792] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 791] ioctl(7, LOOP_CLR_FD [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 793] close(7 [pid 792] <... futex resumed>) = 1 [pid 791] <... ioctl resumed>) = 0 [pid 787] <... futex resumed>) = 0 [pid 793] <... close resumed>) = 0 [pid 792] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 787] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 793] close(6 [pid 792] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 787] <... futex resumed>) = 0 [pid 792] memfd_create("syzkaller", 0 [pid 787] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 793] <... close resumed>) = 0 [pid 792] <... memfd_create resumed>) = 6 [pid 793] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 792] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 793] <... futex resumed>) = 1 [pid 792] <... mmap resumed>) = 0x7fe6f03b1000 [pid 790] <... futex resumed>) = 0 [pid 793] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 792] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 790] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 793] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 792] <... write resumed>) = 131072 [pid 791] ioctl(7, LOOP_SET_FD, 6 [pid 790] <... futex resumed>) = 0 [pid 793] mknod(0x20000000, 000 [pid 792] munmap(0x7fe6f03b1000, 138412032 [pid 791] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 790] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 793] <... mknod resumed>) = -1 EEXIST (File exists) [pid 792] <... munmap resumed>) = 0 [pid 791] close(7./strace-static-x86_64: Process 795 attached [pid 793] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 792] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 795] set_robust_list(0x7fe6f87d19a0, 24 [pid 793] <... futex resumed>) = 1 [pid 792] <... openat resumed>) = 7 [pid 791] <... close resumed>) = 0 [pid 790] <... futex resumed>) = 0 [pid 795] <... set_robust_list resumed>) = 0 [pid 793] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 792] ioctl(7, LOOP_SET_FD, 6 [pid 791] close(6 [pid 303] <... restart_syscall resumed>) = 0 [pid 795] rt_sigprocmask(SIG_SETMASK, [], [pid 792] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 790] exit_group(0 [pid 795] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 792] ioctl(7, LOOP_CLR_FD [pid 795] memfd_create("syzkaller", 0 [pid 793] <... futex resumed>) = ? [pid 792] <... ioctl resumed>) = 0 [pid 791] <... close resumed>) = 0 [pid 790] <... exit_group resumed>) = ? [pid 795] <... memfd_create resumed>) = 3 [pid 793] +++ exited with 0 +++ [pid 791] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 795] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 791] <... futex resumed>) = 1 [pid 790] +++ exited with 0 +++ [pid 786] <... futex resumed>) = 0 [pid 795] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 792] ioctl(7, LOOP_SET_FD, 6 [pid 791] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 786] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=790, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 792] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 791] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 786] <... futex resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 303] <... openat resumed>) = 3 [pid 792] close(7 [pid 791] mknod(0x20000000, 000 [pid 786] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] ioctl(3, LOOP_CLR_FD [pid 792] <... close resumed>) = 0 [pid 791] <... mknod resumed>) = -1 EEXIST (File exists) [pid 303] <... ioctl resumed>) = 0 [pid 792] close(6 [pid 791] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] close(3 [pid 792] <... close resumed>) = 0 [pid 792] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 787] <... futex resumed>) = 0 [pid 792] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 787] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 792] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 787] <... futex resumed>) = 0 [pid 792] mknod(0x20000000, 000 [pid 787] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 792] <... mknod resumed>) = -1 EEXIST (File exists) [pid 792] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... restart_syscall resumed>) = 0 [pid 792] <... futex resumed>) = 1 [pid 787] <... futex resumed>) = 0 [pid 792] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 787] exit_group(0 [pid 792] <... futex resumed>) = ? [pid 787] <... exit_group resumed>) = ? [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 795] <... write resumed>) = 262144 [pid 792] +++ exited with 0 +++ [pid 787] +++ exited with 0 +++ [pid 305] <... openat resumed>) = 3 [pid 795] munmap(0x7fe6f03b1000, 138412032 [pid 305] ioctl(3, LOOP_CLR_FD [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=787, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 795] <... munmap resumed>) = 0 [pid 791] <... futex resumed>) = 1 [pid 786] <... futex resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 303] <... close resumed>) = 0 [pid 795] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 791] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 786] exit_group(0 [pid 305] close(3 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 795] <... openat resumed>) = 4 [pid 791] <... futex resumed>) = ? [pid 786] <... exit_group resumed>) = ? [pid 305] <... close resumed>) = 0 [pid 795] ioctl(4, LOOP_SET_FD, 3 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 795] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 795] ioctl(4, LOOP_CLR_FD [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 797 [pid 795] <... ioctl resumed>) = 0 [pid 791] +++ exited with 0 +++ [pid 786] +++ exited with 0 +++ [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 796 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=786, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 797 attached [pid 797] set_robust_list(0x5555636e06a0, 24) = 0 [pid 797] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 797] setpgid(0, 0 [pid 795] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 795] close(4) = 0 [pid 795] close(3) = 0 [pid 795] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 794] <... futex resumed>) = 0 [pid 795] chdir("./file0" [pid 794] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 795] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 794] <... futex resumed>) = 0 [pid 795] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 794] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 795] <... futex resumed>) = 0 [pid 794] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 795] creat("./bus", 000 [pid 794] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 795] <... creat resumed>) = 3 [pid 794] <... futex resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 795] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 794] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 795] <... futex resumed>) = 0 [pid 794] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 795] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 794] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 795] <... openat resumed>) = 4 [pid 794] <... futex resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 304] <... openat resumed>) = 3 [pid 795] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 794] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] ioctl(3, LOOP_CLR_FD [pid 304] ioctl(3, LOOP_CLR_FD [pid 795] <... futex resumed>) = 0 [pid 794] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 306] <... ioctl resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 795] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 794] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] close(3 [pid 304] close(3 [pid 795] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 794] <... futex resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 795] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 794] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 795] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 797] <... setpgid resumed>) = 0 [pid 795] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 798 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 799 [pid 797] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 795] <... futex resumed>) = 1 [pid 794] <... futex resumed>) = 0 [pid 797] <... openat resumed>) = 3 [pid 795] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 797] write(3, "1000", 4) = 4 [pid 797] close(3) = 0 executing program [pid 797] write(1, "executing program\n", 18) = 18 [pid 797] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 797] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 797] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 ./strace-static-x86_64: Process 796 attached [pid 797] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 796] set_robust_list(0x5555636e06a0, 24 [pid 797] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 796] <... set_robust_list resumed>) = 0 [pid 797] <... mprotect resumed>) = 0 [pid 796] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 797] rt_sigprocmask(SIG_BLOCK, ~[], [pid 796] <... prctl resumed>) = 0 [pid 797] <... rt_sigprocmask resumed>[], 8) = 0 [pid 796] setpgid(0, 0 [pid 797] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 796] <... setpgid resumed>) = 0 [pid 796] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 797] <... clone3 resumed> => {parent_tid=[800]}, 88) = 800 [pid 796] <... openat resumed>) = 3 [pid 797] rt_sigprocmask(SIG_SETMASK, [], [pid 796] write(3, "1000", 4 [pid 794] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 797] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 796] <... write resumed>) = 4 [pid 795] <... futex resumed>) = 0 [pid 794] <... futex resumed>) = 1 [pid 797] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 796] close(3 [pid 795] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 794] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 797] <... futex resumed>) = 0 [pid 796] <... close resumed>) = 0 [pid 795] <... open resumed>) = 5 executing program [pid 797] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 796] write(1, "executing program\n", 18 [pid 795] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 796] <... write resumed>) = 18 [pid 795] <... futex resumed>) = 1 [pid 794] <... futex resumed>) = 0 [pid 796] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 795] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 794] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 798 attached [pid 796] <... futex resumed>) = 0 [pid 795] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 794] <... futex resumed>) = 0 [pid 796] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 795] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 794] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 798] set_robust_list(0x5555636e06a0, 24 [pid 796] <... rt_sigaction resumed>NULL, 8) = 0 [pid 795] <... mmap resumed>) = 0x20000000 [pid 796] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 795] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 799 attached [pid 798] <... set_robust_list resumed>) = 0 [pid 796] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 795] <... futex resumed>) = 1 [pid 794] <... futex resumed>) = 0 [pid 796] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 795] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 796] <... mmap resumed>) = 0x7fe6f87b1000 [pid 794] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 799] set_robust_list(0x5555636e06a0, 24 [pid 798] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 796] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 795] <... futex resumed>) = 0 [pid 794] <... futex resumed>) = 1 [pid 796] <... mprotect resumed>) = 0 [pid 795] memfd_create("syzkaller", 0 [pid 796] rt_sigprocmask(SIG_BLOCK, ~[], [pid 795] <... memfd_create resumed>) = 6 [pid 799] <... set_robust_list resumed>) = 0 [pid 798] <... prctl resumed>) = 0 [pid 796] <... rt_sigprocmask resumed>[], 8) = 0 [pid 795] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 794] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 796] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 795] <... mmap resumed>) = 0x7fe6f03b1000 [pid 799] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 798] setpgid(0, 0 [pid 795] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 799] <... prctl resumed>) = 0 [pid 798] <... setpgid resumed>) = 0 [pid 796] <... clone3 resumed> => {parent_tid=[801]}, 88) = 801 [pid 795] <... write resumed>) = 131072 [pid 799] setpgid(0, 0 [pid 798] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 796] rt_sigprocmask(SIG_SETMASK, [], [pid 795] munmap(0x7fe6f03b1000, 138412032 [pid 799] <... setpgid resumed>) = 0 [pid 798] <... openat resumed>) = 3 [pid 796] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 795] <... munmap resumed>) = 0 [pid 799] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 798] write(3, "1000", 4 [pid 796] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 795] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 799] <... openat resumed>) = 3 [pid 798] <... write resumed>) = 4 [pid 796] <... futex resumed>) = 0 [pid 795] <... openat resumed>) = 7 [pid 799] write(3, "1000", 4 [pid 798] close(3 [pid 796] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 795] ioctl(7, LOOP_SET_FD, 6./strace-static-x86_64: Process 800 attached [pid 799] <... write resumed>) = 4 [pid 798] <... close resumed>) = 0 [pid 795] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) executing program [pid 800] set_robust_list(0x7fe6f87d19a0, 24 [pid 799] close(3 [pid 798] write(1, "executing program\n", 18 [pid 795] ioctl(7, LOOP_CLR_FDexecuting program [pid 800] <... set_robust_list resumed>) = 0 [pid 799] <... close resumed>) = 0 [pid 798] <... write resumed>) = 18 [pid 795] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 801 attached [pid 800] rt_sigprocmask(SIG_SETMASK, [], [pid 799] write(1, "executing program\n", 18 [pid 798] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 801] set_robust_list(0x7fe6f87d19a0, 24 [pid 800] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 799] <... write resumed>) = 18 [pid 798] <... futex resumed>) = 0 [pid 801] <... set_robust_list resumed>) = 0 [pid 800] memfd_create("syzkaller", 0 [pid 799] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 798] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 801] rt_sigprocmask(SIG_SETMASK, [], [pid 799] <... futex resumed>) = 0 [pid 798] <... rt_sigaction resumed>NULL, 8) = 0 [pid 801] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 799] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 798] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 799] <... rt_sigaction resumed>NULL, 8) = 0 [pid 798] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 799] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 798] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 801] memfd_create("syzkaller", 0 [pid 799] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 798] <... mmap resumed>) = 0x7fe6f87b1000 [pid 799] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 798] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 799] <... mmap resumed>) = 0x7fe6f87b1000 [pid 801] <... memfd_create resumed>) = 3 [pid 800] <... memfd_create resumed>) = 3 [pid 799] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 798] <... mprotect resumed>) = 0 [pid 800] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 799] <... mprotect resumed>) = 0 [pid 801] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 798] rt_sigprocmask(SIG_BLOCK, ~[], [pid 795] ioctl(7, LOOP_SET_FD, 6 [pid 801] <... mmap resumed>) = 0x7fe6f03b1000 [pid 800] <... mmap resumed>) = 0x7fe6f03b1000 [pid 799] rt_sigprocmask(SIG_BLOCK, ~[], [pid 798] <... rt_sigprocmask resumed>[], 8) = 0 [pid 795] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 801] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 800] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 799] <... rt_sigprocmask resumed>[], 8) = 0 [pid 798] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 795] close(7 [pid 800] <... write resumed>) = 262144 [pid 799] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 795] <... close resumed>) = 0 [pid 795] close(6) = 0 [pid 795] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 794] <... futex resumed>) = 0 [pid 795] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 794] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 795] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 794] <... futex resumed>) = 0 [pid 795] mknod(0x20000000, 000 [pid 794] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 795] <... mknod resumed>) = -1 EEXIST (File exists) [pid 795] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 794] <... futex resumed>) = 0 [pid 795] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 794] exit_group(0 [pid 795] <... futex resumed>) = ? [pid 794] <... exit_group resumed>) = ? [pid 800] munmap(0x7fe6f03b1000, 138412032 [pid 795] +++ exited with 0 +++ [pid 794] +++ exited with 0 +++ [pid 800] <... munmap resumed>) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=794, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 800] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 800] <... openat resumed>) = 4 [pid 302] <... restart_syscall resumed>) = 0 [pid 800] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 800] ioctl(4, LOOP_CLR_FD [pid 798] <... clone3 resumed> => {parent_tid=[802]}, 88) = 802 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 800] <... ioctl resumed>) = 0 [pid 799] <... clone3 resumed> => {parent_tid=[803]}, 88) = 803 [pid 798] rt_sigprocmask(SIG_SETMASK, [], [pid 302] <... openat resumed>) = 3 [pid 799] rt_sigprocmask(SIG_SETMASK, [], [pid 798] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 801] <... write resumed>) = 262144 [pid 799] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 798] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... ioctl resumed>) = 0 [pid 801] munmap(0x7fe6f03b1000, 138412032 [pid 799] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 798] <... futex resumed>) = 0 [pid 302] close(3 [pid 799] <... futex resumed>) = 0 [pid 798] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 302] <... close resumed>) = 0 [pid 799] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 800] ioctl(4, LOOP_SET_FD, 3 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 804 [pid 800] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 800] close(4) = 0 [pid 800] close(3) = 0 [pid 800] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 797] <... futex resumed>) = 0 [pid 800] chdir("./file0" [pid 797] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 800] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 797] <... futex resumed>) = 0 [pid 800] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 797] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 800] <... futex resumed>) = 0 [pid 797] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 800] creat("./bus", 000 [pid 797] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 800] <... creat resumed>) = 3 [pid 797] <... futex resumed>) = 0 [pid 800] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 797] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 800] <... futex resumed>) = 0 [pid 797] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 800] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 797] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 800] <... openat resumed>) = 4 [pid 797] <... futex resumed>) = 0 [pid 800] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 797] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 800] <... futex resumed>) = 0 [pid 797] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 800] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 797] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 797] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 803 attached [pid 803] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 803] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 803] memfd_create("syzkaller", 0) = 3 [pid 803] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 801] <... munmap resumed>) = 0 [pid 800] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 800] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 797] <... futex resumed>) = 0 [pid 800] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 797] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 800] <... open resumed>) = 5 [pid 797] <... futex resumed>) = 0 [pid 800] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 797] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 800] <... futex resumed>) = 0 [pid 797] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 800] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 797] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 800] <... mmap resumed>) = 0x20000000 [pid 797] <... futex resumed>) = 0 ./strace-static-x86_64: Process 804 attached [pid 800] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 797] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 804] set_robust_list(0x5555636e06a0, 24 [pid 800] <... futex resumed>) = 0 [pid 797] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 804] <... set_robust_list resumed>) = 0 [pid 800] memfd_create("syzkaller", 0 [pid 797] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 804] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 800] <... memfd_create resumed>) = 6 [pid 797] <... futex resumed>) = 0 [pid 804] <... prctl resumed>) = 0 [pid 800] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 797] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 804] setpgid(0, 0 [pid 803] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 800] <... mmap resumed>) = 0x7fe6f03b1000 ./strace-static-x86_64: Process 802 attached [pid 804] <... setpgid resumed>) = 0 [pid 801] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 800] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 804] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 800] <... write resumed>) = 131072 [pid 804] <... openat resumed>) = 3 [pid 800] munmap(0x7fe6f03b1000, 138412032 [pid 804] write(3, "1000", 4 [pid 800] <... munmap resumed>) = 0 [pid 804] <... write resumed>) = 4 [pid 800] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 804] close(3 [pid 800] <... openat resumed>) = 7 [pid 804] <... close resumed>) = 0 [pid 800] ioctl(7, LOOP_SET_FD, 6executing program [pid 804] write(1, "executing program\n", 18 [pid 800] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 804] <... write resumed>) = 18 [pid 800] ioctl(7, LOOP_CLR_FD [pid 804] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 800] <... ioctl resumed>) = 0 [pid 801] <... openat resumed>) = 4 [pid 802] set_robust_list(0x7fe6f87d19a0, 24 [pid 801] ioctl(4, LOOP_SET_FD, 3 [pid 802] <... set_robust_list resumed>) = 0 [pid 801] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 802] rt_sigprocmask(SIG_SETMASK, [], [pid 801] ioctl(4, LOOP_CLR_FD [pid 804] <... futex resumed>) = 0 [pid 802] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 801] <... ioctl resumed>) = 0 [pid 804] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 802] memfd_create("syzkaller", 0 [pid 804] <... rt_sigaction resumed>NULL, 8) = 0 [pid 804] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 804] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 804] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 804] rt_sigprocmask(SIG_BLOCK, ~[], [pid 802] <... memfd_create resumed>) = 3 [pid 802] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 801] ioctl(4, LOOP_SET_FD, 3 [pid 804] <... rt_sigprocmask resumed>[], 8) = 0 [pid 803] <... write resumed>) = 262144 [pid 802] <... mmap resumed>) = 0x7fe6f03b1000 [pid 801] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 800] ioctl(7, LOOP_SET_FD, 6 [pid 804] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 803] munmap(0x7fe6f03b1000, 138412032 [pid 800] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 803] <... munmap resumed>) = 0 [pid 800] close(7 [pid 804] <... clone3 resumed> => {parent_tid=[805]}, 88) = 805 [pid 803] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 800] <... close resumed>) = 0 [pid 804] rt_sigprocmask(SIG_SETMASK, [], [pid 803] <... openat resumed>) = 4 [pid 800] close(6 [pid 804] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 803] ioctl(4, LOOP_SET_FD, 3 [pid 800] <... close resumed>) = 0 [pid 804] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 803] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 800] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 804] <... futex resumed>) = 0 [pid 803] ioctl(4, LOOP_CLR_FD [pid 802] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 801] close(4 [pid 800] <... futex resumed>) = 1 [pid 797] <... futex resumed>) = 0 [pid 804] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 803] <... ioctl resumed>) = 0 [pid 801] <... close resumed>) = 0 [pid 800] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 797] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 801] close(3 [pid 800] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 797] <... futex resumed>) = 0 [pid 800] mknod(0x20000000, 000 [pid 797] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 800] <... mknod resumed>) = -1 EEXIST (File exists) [pid 800] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 797] <... futex resumed>) = 0 [pid 801] <... close resumed>) = 0 [pid 800] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 797] exit_group(0 [pid 801] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 800] <... futex resumed>) = ? [pid 797] <... exit_group resumed>) = ? [pid 802] <... write resumed>) = 262144 [pid 801] <... futex resumed>) = 1 [pid 800] +++ exited with 0 +++ [pid 797] +++ exited with 0 +++ [pid 796] <... futex resumed>) = 0 [pid 803] ioctl(4, LOOP_SET_FD, 3 [pid 802] munmap(0x7fe6f03b1000, 138412032 [pid 801] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 796] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=797, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 803] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 802] <... munmap resumed>) = 0 [pid 801] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 796] <... futex resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 803] close(4 [pid 802] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 801] chdir("./file0" [pid 796] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 803] <... close resumed>) = 0 [pid 802] <... openat resumed>) = 4 [pid 801] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 803] close(3 [pid 802] ioctl(4, LOOP_SET_FD, 3 [pid 801] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 803] <... close resumed>) = 0 [pid 802] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 801] <... futex resumed>) = 1 [pid 796] <... futex resumed>) = 0 [pid 803] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 802] ioctl(4, LOOP_CLR_FD [pid 801] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 796] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 803] <... futex resumed>) = 1 [pid 802] <... ioctl resumed>) = 0 [pid 801] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 799] <... futex resumed>) = 0 [pid 796] <... futex resumed>) = 0 [pid 803] chdir("./file0" [pid 801] creat("./bus", 000 [pid 799] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 796] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 803] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 801] <... creat resumed>) = 3 [pid 799] <... futex resumed>) = 0 ./strace-static-x86_64: Process 805 attached [pid 803] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 801] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 799] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 805] set_robust_list(0x7fe6f87d19a0, 24 [pid 803] <... futex resumed>) = 0 [pid 801] <... futex resumed>) = 1 [pid 799] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 796] <... futex resumed>) = 0 [pid 805] <... set_robust_list resumed>) = 0 [pid 803] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 801] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 799] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 796] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 805] rt_sigprocmask(SIG_SETMASK, [], [pid 803] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 802] ioctl(4, LOOP_SET_FD, 3 [pid 801] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 799] <... futex resumed>) = 0 [pid 796] <... futex resumed>) = 0 [pid 805] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 803] creat("./bus", 000 [pid 802] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 801] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 799] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 796] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 805] memfd_create("syzkaller", 0 [pid 803] <... creat resumed>) = 3 [pid 802] close(4 [pid 801] <... openat resumed>) = 4 [pid 305] <... restart_syscall resumed>) = 0 [pid 805] <... memfd_create resumed>) = 3 [pid 803] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 802] <... close resumed>) = 0 [pid 801] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 805] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 803] <... futex resumed>) = 1 [pid 802] close(3 [pid 801] <... futex resumed>) = 1 [pid 799] <... futex resumed>) = 0 [pid 796] <... futex resumed>) = 0 [pid 805] <... mmap resumed>) = 0x7fe6f03b1000 [pid 803] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 796] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 802] <... close resumed>) = 0 [pid 801] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 799] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 796] <... futex resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 805] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 803] <... futex resumed>) = 0 [pid 802] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 799] <... futex resumed>) = 1 [pid 796] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] ioctl(3, LOOP_CLR_FD [pid 805] <... write resumed>) = 262144 [pid 803] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 802] <... futex resumed>) = 1 [pid 801] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 799] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 798] <... futex resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 803] <... openat resumed>) = 4 [pid 802] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 801] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 798] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] close(3 [pid 803] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 802] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 801] <... futex resumed>) = 1 [pid 798] <... futex resumed>) = 0 [pid 796] <... futex resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 803] <... futex resumed>) = 1 [pid 802] chdir("./file0" [pid 801] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 799] <... futex resumed>) = 0 [pid 798] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 796] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 805] munmap(0x7fe6f03b1000, 138412032 [pid 803] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 802] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 801] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 799] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 796] <... futex resumed>) = 0 [pid 805] <... munmap resumed>) = 0 [pid 803] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 802] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 801] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 799] <... futex resumed>) = 0 [pid 796] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 806 [pid 805] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 803] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 802] <... futex resumed>) = 1 [pid 801] <... open resumed>) = 5 [pid 799] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 798] <... futex resumed>) = 0 [pid 805] <... openat resumed>) = 4 [pid 803] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 802] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 801] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 798] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 805] ioctl(4, LOOP_SET_FD, 3 [pid 803] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 802] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 801] <... futex resumed>) = 1 [pid 798] <... futex resumed>) = 0 [pid 796] <... futex resumed>) = 0 [pid 805] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 803] <... futex resumed>) = 1 [pid 802] creat("./bus", 000 [pid 801] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 799] <... futex resumed>) = 0 [pid 798] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 796] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 805] ioctl(4, LOOP_CLR_FD [pid 803] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 802] <... creat resumed>) = 3 [pid 801] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 796] <... futex resumed>) = 0 [pid 805] <... ioctl resumed>) = 0 [pid 803] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 802] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 801] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 799] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 796] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 803] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 802] <... futex resumed>) = 1 [pid 801] <... mmap resumed>) = 0x20000000 [pid 799] <... futex resumed>) = 0 [pid 798] <... futex resumed>) = 0 [pid 803] <... open resumed>) = 5 [pid 802] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 801] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 799] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 798] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 803] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 802] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 801] <... futex resumed>) = 1 [pid 796] <... futex resumed>) = 0 [pid 803] <... futex resumed>) = 0 [pid 802] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 801] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 799] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 798] <... futex resumed>) = 0 [pid 796] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 803] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 802] <... openat resumed>) = 4 [pid 801] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 799] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 798] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 796] <... futex resumed>) = 0 [pid 805] ioctl(4, LOOP_SET_FD, 3 [pid 803] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 802] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 801] memfd_create("syzkaller", 0 [pid 799] <... futex resumed>) = 0 [pid 798] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 796] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 805] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 803] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 802] <... futex resumed>) = 0 [pid 801] <... memfd_create resumed>) = 6 [pid 799] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 798] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 805] close(4 [pid 803] <... mmap resumed>) = 0x20000000 [pid 802] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 801] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 798] <... futex resumed>) = 0 [pid 805] <... close resumed>) = 0 [pid 803] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 805] close(3 [pid 803] <... futex resumed>) = 1 [pid 802] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 801] <... mmap resumed>) = 0x7fe6f03b1000 [pid 799] <... futex resumed>) = 0 [pid 798] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 806 attached [pid 805] <... close resumed>) = 0 [pid 803] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 806] set_robust_list(0x5555636e06a0, 24 [pid 805] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 806] <... set_robust_list resumed>) = 0 [pid 805] <... futex resumed>) = 1 [pid 804] <... futex resumed>) = 0 [pid 806] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 805] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 804] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 806] <... prctl resumed>) = 0 [pid 805] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 804] <... futex resumed>) = 0 [pid 806] setpgid(0, 0 [pid 805] chdir("./file0" [pid 804] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 806] <... setpgid resumed>) = 0 [pid 805] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 806] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 805] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 806] <... openat resumed>) = 3 [pid 805] <... futex resumed>) = 1 [pid 804] <... futex resumed>) = 0 [pid 806] write(3, "1000", 4 [pid 805] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 804] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 806] <... write resumed>) = 4 [pid 805] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) executing program [pid 804] <... futex resumed>) = 0 [pid 806] close(3 [pid 805] creat("./bus", 000 [pid 804] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 806] <... close resumed>) = 0 [pid 805] <... creat resumed>) = 3 [pid 806] write(1, "executing program\n", 18 [pid 805] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 806] <... write resumed>) = 18 [pid 805] <... futex resumed>) = 1 [pid 804] <... futex resumed>) = 0 [pid 806] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 805] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 804] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 802] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 806] <... futex resumed>) = 0 [pid 805] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 804] <... futex resumed>) = 0 [pid 806] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 805] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 804] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 806] <... rt_sigaction resumed>NULL, 8) = 0 [pid 805] <... openat resumed>) = 4 [pid 806] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 805] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 806] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 805] <... futex resumed>) = 1 [pid 804] <... futex resumed>) = 0 [pid 806] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 805] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 804] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 801] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 806] <... mmap resumed>) = 0x7fe6f87b1000 [pid 805] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 804] <... futex resumed>) = 0 [pid 802] <... futex resumed>) = 0 [pid 799] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 798] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 806] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 805] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 804] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 806] <... mprotect resumed>) = 0 [pid 803] <... futex resumed>) = 0 [pid 802] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 801] <... write resumed>) = 131072 [pid 799] <... futex resumed>) = 1 [pid 798] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 806] rt_sigprocmask(SIG_BLOCK, ~[], [pid 805] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 803] memfd_create("syzkaller", 0 [pid 802] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 801] munmap(0x7fe6f03b1000, 138412032 [pid 799] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 798] <... futex resumed>) = 0 [pid 806] <... rt_sigprocmask resumed>[], 8) = 0 [pid 805] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 803] <... memfd_create resumed>) = 6 [pid 802] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 801] <... munmap resumed>) = 0 [pid 798] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 806] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 805] <... futex resumed>) = 1 [pid 804] <... futex resumed>) = 0 [pid 803] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 802] <... open resumed>) = 5 [pid 801] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 805] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 804] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 803] <... mmap resumed>) = 0x7fe6f03b1000 [pid 802] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 801] <... openat resumed>) = 7 [pid 806] <... clone3 resumed> => {parent_tid=[807]}, 88) = 807 [pid 805] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 804] <... futex resumed>) = 0 [pid 803] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 802] <... futex resumed>) = 1 [pid 801] ioctl(7, LOOP_SET_FD, 6 [pid 798] <... futex resumed>) = 0 [pid 806] rt_sigprocmask(SIG_SETMASK, [], [pid 805] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 804] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 803] <... write resumed>) = 131072 [pid 802] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 801] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 798] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 806] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 805] <... open resumed>) = 5 [pid 803] munmap(0x7fe6f03b1000, 138412032 [pid 802] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 801] ioctl(7, LOOP_CLR_FD [pid 798] <... futex resumed>) = 0 [pid 806] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 805] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 803] <... munmap resumed>) = 0 [pid 802] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 801] <... ioctl resumed>) = 0 [pid 798] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 806] <... futex resumed>) = 0 [pid 805] <... futex resumed>) = 1 [pid 804] <... futex resumed>) = 0 [pid 803] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 806] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 805] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 804] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 803] <... openat resumed>) = 7 [pid 802] <... mmap resumed>) = 0x20000000 [pid 805] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 804] <... futex resumed>) = 0 [pid 803] ioctl(7, LOOP_SET_FD, 6 [pid 802] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 805] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 804] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 803] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 805] <... mmap resumed>) = 0x20000000 [pid 803] ioctl(7, LOOP_CLR_FD [pid 802] <... futex resumed>) = 1 [pid 798] <... futex resumed>) = 0 [pid 805] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 803] <... ioctl resumed>) = 0 [pid 802] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 798] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 805] <... futex resumed>) = 1 [pid 804] <... futex resumed>) = 0 [pid 805] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 804] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 805] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 804] <... futex resumed>) = 0 [pid 805] memfd_create("syzkaller", 0 [pid 804] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 798] <... futex resumed>) = 0 [pid 805] <... memfd_create resumed>) = 6 [pid 802] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 801] ioctl(7, LOOP_SET_FD, 6 [pid 798] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 805] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 802] memfd_create("syzkaller", 0 [pid 805] <... mmap resumed>) = 0x7fe6f03b1000 [pid 801] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 805] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 803] ioctl(7, LOOP_SET_FD, 6 [pid 802] <... memfd_create resumed>) = 6 [pid 801] close(7 [pid 805] <... write resumed>) = 131072 [pid 803] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 802] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 801] <... close resumed>) = 0 [pid 805] munmap(0x7fe6f03b1000, 138412032 [pid 803] close(7 [pid 802] <... mmap resumed>) = 0x7fe6f03b1000 [pid 801] close(6 [pid 805] <... munmap resumed>) = 0 [pid 803] <... close resumed>) = 0 [pid 805] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 803] close(6 [pid 802] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 801] <... close resumed>) = 0 [pid 805] <... openat resumed>) = 7 [pid 803] <... close resumed>) = 0 [pid 805] ioctl(7, LOOP_SET_FD, 6 [pid 803] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 805] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 803] <... futex resumed>) = 1 [pid 802] <... write resumed>) = 131072 [pid 805] ioctl(7, LOOP_CLR_FD [pid 803] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 802] munmap(0x7fe6f03b1000, 138412032 [pid 801] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 799] <... futex resumed>) = 0 ./strace-static-x86_64: Process 807 attached [pid 805] <... ioctl resumed>) = 0 [pid 807] set_robust_list(0x7fe6f87d19a0, 24 [pid 802] <... munmap resumed>) = 0 [pid 801] <... futex resumed>) = 1 [pid 799] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 796] <... futex resumed>) = 0 [pid 807] <... set_robust_list resumed>) = 0 [pid 803] <... futex resumed>) = 0 [pid 802] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 801] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 799] <... futex resumed>) = 1 [pid 796] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 807] rt_sigprocmask(SIG_SETMASK, [], [pid 803] mknod(0x20000000, 000 [pid 802] <... openat resumed>) = 7 [pid 801] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 799] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 796] <... futex resumed>) = 0 [pid 807] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 803] <... mknod resumed>) = -1 EEXIST (File exists) [pid 802] ioctl(7, LOOP_SET_FD, 6 [pid 801] mknod(0x20000000, 000 [pid 796] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 803] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 802] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 801] <... mknod resumed>) = -1 EEXIST (File exists) [pid 807] memfd_create("syzkaller", 0 [pid 805] ioctl(7, LOOP_SET_FD, 6 [pid 803] <... futex resumed>) = 1 [pid 799] <... futex resumed>) = 0 [pid 807] <... memfd_create resumed>) = 3 [pid 805] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 803] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 802] ioctl(7, LOOP_CLR_FD [pid 801] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 799] exit_group(0 [pid 807] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 805] close(7 [pid 803] <... futex resumed>) = ? [pid 802] <... ioctl resumed>) = 0 [pid 801] <... futex resumed>) = 1 [pid 799] <... exit_group resumed>) = ? [pid 796] <... futex resumed>) = 0 [pid 807] <... mmap resumed>) = 0x7fe6f03b1000 [pid 805] <... close resumed>) = 0 [pid 803] +++ exited with 0 +++ [pid 801] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 799] +++ exited with 0 +++ [pid 796] exit_group(0 [pid 805] close(6 [pid 801] <... futex resumed>) = ? [pid 796] <... exit_group resumed>) = ? [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=799, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 805] <... close resumed>) = 0 [pid 801] +++ exited with 0 +++ [pid 796] +++ exited with 0 +++ [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 805] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 802] ioctl(7, LOOP_SET_FD, 6 [pid 805] <... futex resumed>) = 1 [pid 804] <... futex resumed>) = 0 [pid 805] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 804] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 802] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=796, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 807] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 805] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 804] <... futex resumed>) = 0 [pid 802] close(7 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 805] mknod(0x20000000, 000 [pid 804] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 805] <... mknod resumed>) = -1 EEXIST (File exists) [pid 802] <... close resumed>) = 0 [pid 805] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 802] close(6 [pid 805] <... futex resumed>) = 1 [pid 804] <... futex resumed>) = 0 [pid 805] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 804] exit_group(0 [pid 805] <... futex resumed>) = ? [pid 804] <... exit_group resumed>) = ? [pid 807] <... write resumed>) = 262144 [pid 805] +++ exited with 0 +++ [pid 804] +++ exited with 0 +++ [pid 802] <... close resumed>) = 0 [pid 802] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=804, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 802] <... futex resumed>) = 1 [pid 798] <... futex resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 802] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 798] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 802] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 798] <... futex resumed>) = 0 [pid 802] mknod(0x20000000, 000 [pid 807] munmap(0x7fe6f03b1000, 138412032 [pid 802] <... mknod resumed>) = -1 EEXIST (File exists) [pid 798] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... restart_syscall resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 807] <... munmap resumed>) = 0 [pid 802] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 798] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 807] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 802] <... futex resumed>) = 0 [pid 798] exit_group(0 [pid 807] <... openat resumed>) = 4 [pid 798] <... exit_group resumed>) = ? [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 802] +++ exited with 0 +++ [pid 304] <... openat resumed>) = 3 [pid 302] <... openat resumed>) = 3 [pid 304] ioctl(3, LOOP_CLR_FD [pid 302] ioctl(3, LOOP_CLR_FD [pid 798] +++ exited with 0 +++ [pid 304] <... ioctl resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 807] ioctl(4, LOOP_SET_FD, 3 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=798, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] close(3 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 302] close(3 [pid 807] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 304] <... close resumed>) = 0 [pid 303] <... openat resumed>) = 3 [pid 302] <... close resumed>) = 0 [pid 807] ioctl(4, LOOP_CLR_FD [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] ioctl(3, LOOP_CLR_FD [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 807] <... ioctl resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 808 [pid 303] close(3 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 809 [pid 303] <... close resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 808 attached [pid 808] set_robust_list(0x5555636e06a0, 24) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 810 [pid 808] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 807] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 807] close(4) = 0 [pid 807] close(3 [pid 808] <... prctl resumed>) = 0 [pid 808] setpgid(0, 0) = 0 [pid 808] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 807] <... close resumed>) = 0 [pid 807] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 806] <... futex resumed>) = 0 [pid 807] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 806] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 807] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 806] <... futex resumed>) = 0 [pid 807] chdir("./file0" [pid 806] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 807] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 807] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 806] <... futex resumed>) = 0 [pid 807] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 806] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 807] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 806] <... futex resumed>) = 0 [pid 807] creat("./bus", 000 [pid 806] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 807] <... creat resumed>) = 3 [pid 807] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 806] <... futex resumed>) = 0 [pid 807] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 806] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 807] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 806] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 807] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 808] <... openat resumed>) = 3 [pid 807] <... openat resumed>) = 4 [pid 807] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 806] <... futex resumed>) = 0 [pid 807] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 806] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 807] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 806] <... futex resumed>) = 0 [pid 807] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 806] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... restart_syscall resumed>) = 0 [pid 807] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 807] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 807] <... futex resumed>) = 1 [pid 806] <... futex resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 806] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] ioctl(3, LOOP_CLR_FD [pid 806] <... futex resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 806] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] close(3) = 0 [pid 807] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 809 attached [pid 807] <... open resumed>) = 5 [pid 809] set_robust_list(0x5555636e06a0, 24 [pid 807] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 811 [pid 809] <... set_robust_list resumed>) = 0 [pid 807] <... futex resumed>) = 1 [pid 806] <... futex resumed>) = 0 [pid 809] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 807] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 806] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 809] <... prctl resumed>) = 0 [pid 807] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 806] <... futex resumed>) = 0 [pid 809] setpgid(0, 0 [pid 807] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 806] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 809] <... setpgid resumed>) = 0 [pid 807] <... mmap resumed>) = 0x20000000 [pid 807] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 809] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 807] <... futex resumed>) = 1 [pid 806] <... futex resumed>) = 0 [pid 809] <... openat resumed>) = 3 [pid 808] write(3, "1000", 4 [pid 807] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 806] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 809] write(3, "1000", 4 [pid 808] <... write resumed>) = 4 [pid 807] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 806] <... futex resumed>) = 0 [pid 809] <... write resumed>) = 4 [pid 808] close(3 [pid 807] memfd_create("syzkaller", 0 [pid 806] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}executing program [pid 809] close(3 [pid 808] <... close resumed>) = 0 [pid 807] <... memfd_create resumed>) = 6 [pid 809] <... close resumed>) = 0 [pid 808] write(1, "executing program\n", 18 [pid 807] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 809] write(1, "executing program\n", 18 [pid 808] <... write resumed>) = 18 [pid 807] <... mmap resumed>) = 0x7fe6f03b1000 ./strace-static-x86_64: Process 811 attached [pid 808] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 808] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 executing program [pid 808] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 809] <... write resumed>) = 18 [pid 807] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 811] set_robust_list(0x5555636e06a0, 24 [pid 808] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 808] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 808] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 809] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 807] <... write resumed>) = 131072 [pid 811] <... set_robust_list resumed>) = 0 [pid 807] munmap(0x7fe6f03b1000, 138412032 [pid 809] <... futex resumed>) = 0 [pid 808] <... mprotect resumed>) = 0 [pid 807] <... munmap resumed>) = 0 [pid 811] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 809] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 808] rt_sigprocmask(SIG_BLOCK, ~[], [pid 807] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 811] <... prctl resumed>) = 0 [pid 809] <... rt_sigaction resumed>NULL, 8) = 0 [pid 808] <... rt_sigprocmask resumed>[], 8) = 0 [pid 807] <... openat resumed>) = 7 [pid 811] setpgid(0, 0 [pid 809] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 807] ioctl(7, LOOP_SET_FD, 6 [pid 811] <... setpgid resumed>) = 0 [pid 809] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 808] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 807] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 809] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 807] ioctl(7, LOOP_CLR_FD [pid 811] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 809] <... mmap resumed>) = 0x7fe6f87b1000 [pid 807] <... ioctl resumed>) = 0 [pid 809] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 811] <... openat resumed>) = 3 [pid 809] <... mprotect resumed>) = 0 [pid 808] <... clone3 resumed> => {parent_tid=[812]}, 88) = 812 ./strace-static-x86_64: Process 810 attached [pid 811] write(3, "1000", 4 [pid 809] rt_sigprocmask(SIG_BLOCK, ~[], [pid 808] rt_sigprocmask(SIG_SETMASK, [], [pid 811] <... write resumed>) = 4 [pid 809] <... rt_sigprocmask resumed>[], 8) = 0 [pid 811] close(3 [pid 810] set_robust_list(0x5555636e06a0, 24 [pid 809] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 808] <... rt_sigprocmask resumed>NULL, 8) = 0 executing program [pid 811] <... close resumed>) = 0 [pid 810] <... set_robust_list resumed>) = 0 [pid 808] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 811] write(1, "executing program\n", 18 [pid 810] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 809] <... clone3 resumed> => {parent_tid=[813]}, 88) = 813 [pid 808] <... futex resumed>) = 0 [pid 811] <... write resumed>) = 18 [pid 810] <... prctl resumed>) = 0 [pid 809] rt_sigprocmask(SIG_SETMASK, [], [pid 808] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 807] ioctl(7, LOOP_SET_FD, 6 [pid 811] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 810] setpgid(0, 0 [pid 809] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 807] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 811] <... futex resumed>) = 0 [pid 809] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 807] close(7 [pid 811] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 809] <... futex resumed>) = 0 [pid 807] <... close resumed>) = 0 [pid 811] <... rt_sigaction resumed>NULL, 8) = 0 [pid 809] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 807] close(6 [pid 811] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 810] <... setpgid resumed>) = 0 [pid 811] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 810] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 807] <... close resumed>) = 0 [pid 811] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 807] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 811] <... mmap resumed>) = 0x7fe6f87b1000 [pid 810] <... openat resumed>) = 3 [pid 807] <... futex resumed>) = 1 [pid 811] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 806] <... futex resumed>) = 0 [pid 811] <... mprotect resumed>) = 0 [pid 810] write(3, "1000", 4 [pid 807] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 806] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 811] rt_sigprocmask(SIG_BLOCK, ~[], [pid 810] <... write resumed>) = 4 [pid 807] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 806] <... futex resumed>) = 0 ./strace-static-x86_64: Process 812 attached [pid 811] <... rt_sigprocmask resumed>[], 8) = 0 [pid 810] close(3 [pid 807] mknod(0x20000000, 000 [pid 806] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 812] set_robust_list(0x7fe6f87d19a0, 24 [pid 811] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 810] <... close resumed>) = 0 [pid 807] <... mknod resumed>) = -1 EEXIST (File exists) [pid 812] <... set_robust_list resumed>) = 0 [pid 807] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 812] rt_sigprocmask(SIG_SETMASK, [], [pid 811] <... clone3 resumed> => {parent_tid=[814]}, 88) = 814 [pid 810] write(1, "executing program\n", 18 [pid 807] <... futex resumed>) = 1 [pid 812] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 811] rt_sigprocmask(SIG_SETMASK, [], [pid 810] <... write resumed>) = 18 [pid 807] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 806] <... futex resumed>) = 0 [pid 812] memfd_create("syzkaller", 0 [pid 811] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 810] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 806] exit_group(0 [pid 812] <... memfd_create resumed>) = 3 [pid 811] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 810] <... futex resumed>) = 0 [pid 807] <... futex resumed>) = ? [pid 806] <... exit_group resumed>) = ? [pid 812] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 811] <... futex resumed>) = 0 [pid 807] +++ exited with 0 +++ [pid 810] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 810] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], ./strace-static-x86_64: Process 813 attached NULL, 8) = 0 [pid 813] set_robust_list(0x7fe6f87d19a0, 24 [pid 812] <... mmap resumed>) = 0x7fe6f03b1000 [pid 811] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 810] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 806] +++ exited with 0 +++ [pid 813] <... set_robust_list resumed>) = 0 [pid 810] <... mmap resumed>) = 0x7fe6f87b1000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=806, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 813] rt_sigprocmask(SIG_SETMASK, [], [pid 810] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 813] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 810] <... mprotect resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 813] memfd_create("syzkaller", 0 [pid 810] rt_sigprocmask(SIG_BLOCK, ~[], [pid 813] <... memfd_create resumed>) = 3 [pid 810] <... rt_sigprocmask resumed>[], 8) = 0 [pid 813] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 810] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 813] <... mmap resumed>) = 0x7fe6f03b1000 [pid 305] <... openat resumed>) = 3 [pid 813] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 810] <... clone3 resumed> => {parent_tid=[815]}, 88) = 815 [pid 305] ioctl(3, LOOP_CLR_FD [pid 810] rt_sigprocmask(SIG_SETMASK, [], [pid 305] <... ioctl resumed>) = 0 [pid 810] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 305] close(3 [pid 810] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... close resumed>) = 0 [pid 810] <... futex resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 810] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 816 [pid 812] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 814 attached ./strace-static-x86_64: Process 815 attached ) = 262144 [pid 815] set_robust_list(0x7fe6f87d19a0, 24 [pid 812] munmap(0x7fe6f03b1000, 138412032 [pid 815] <... set_robust_list resumed>) = 0 [pid 814] set_robust_list(0x7fe6f87d19a0, 24 [pid 812] <... munmap resumed>) = 0 [pid 815] rt_sigprocmask(SIG_SETMASK, [], [pid 812] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 815] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 812] <... openat resumed>) = 4 [pid 815] memfd_create("syzkaller", 0 [pid 812] ioctl(4, LOOP_SET_FD, 3 [pid 814] <... set_robust_list resumed>) = 0 [pid 812] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 814] rt_sigprocmask(SIG_SETMASK, [], [pid 815] <... memfd_create resumed>) = 3 [pid 814] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 813] <... write resumed>) = 262144 [pid 812] ioctl(4, LOOP_CLR_FD [pid 815] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 812] <... ioctl resumed>) = 0 [pid 815] <... mmap resumed>) = 0x7fe6f03b1000 [pid 814] memfd_create("syzkaller", 0) = 3 [pid 813] munmap(0x7fe6f03b1000, 138412032 [pid 814] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 813] <... munmap resumed>) = 0 [pid 814] <... mmap resumed>) = 0x7fe6f03b1000 [pid 813] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 815] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 814] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 813] <... openat resumed>) = 4 [pid 813] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 813] ioctl(4, LOOP_CLR_FD [pid 812] ioctl(4, LOOP_SET_FD, 3 [pid 813] <... ioctl resumed>) = 0 [pid 812] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 812] close(4) = 0 [pid 812] close(3./strace-static-x86_64: Process 816 attached [pid 816] set_robust_list(0x5555636e06a0, 24) = 0 [pid 816] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 813] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 813] close(4) = 0 [pid 816] <... prctl resumed>) = 0 [pid 813] close(3 [pid 816] setpgid(0, 0 [pid 813] <... close resumed>) = 0 [pid 812] <... close resumed>) = 0 [pid 815] <... write resumed>) = 262144 [pid 812] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 816] <... setpgid resumed>) = 0 [pid 815] munmap(0x7fe6f03b1000, 138412032 [pid 813] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 812] <... futex resumed>) = 1 [pid 808] <... futex resumed>) = 0 [pid 816] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 815] <... munmap resumed>) = 0 [pid 813] <... futex resumed>) = 1 [pid 812] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 809] <... futex resumed>) = 0 [pid 808] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 816] <... openat resumed>) = 3 [pid 815] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 814] <... write resumed>) = 262144 [pid 813] chdir("./file0" [pid 812] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 809] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 808] <... futex resumed>) = 0 [pid 816] write(3, "1000", 4 [pid 815] <... openat resumed>) = 4 [pid 813] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 812] chdir("./file0" [pid 809] <... futex resumed>) = 0 [pid 808] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 816] <... write resumed>) = 4 [pid 815] ioctl(4, LOOP_SET_FD, 3 [pid 813] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 812] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 809] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 815] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 812] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 809] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 816] close(3 [pid 815] ioctl(4, LOOP_CLR_FD [pid 813] <... futex resumed>) = 0 [pid 812] <... futex resumed>) = 1 [pid 809] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 808] <... futex resumed>) = 0 [pid 816] <... close resumed>) = 0 [pid 815] <... ioctl resumed>) = 0 [pid 814] munmap(0x7fe6f03b1000, 138412032 [pid 813] creat("./bus", 000 [pid 812] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 809] <... futex resumed>) = 0 [pid 808] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 816] write(1, "executing program\n", 18 [pid 814] <... munmap resumed>) = 0 [pid 813] <... creat resumed>) = 3 [pid 812] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 809] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 808] <... futex resumed>) = 0 [pid 816] <... write resumed>) = 18 [pid 814] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 813] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 812] creat("./bus", 000 [pid 808] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 816] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 814] <... openat resumed>) = 4 [pid 813] <... futex resumed>) = 1 [pid 816] <... futex resumed>) = 0 [pid 814] ioctl(4, LOOP_SET_FD, 3 [pid 813] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 816] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 814] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 816] <... rt_sigaction resumed>NULL, 8) = 0 [pid 814] ioctl(4, LOOP_CLR_FD [pid 816] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 814] <... ioctl resumed>) = 0 [pid 816] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 816] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 816] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 816] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 816] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 814] ioctl(4, LOOP_SET_FD, 3 [pid 816] <... clone3 resumed> => {parent_tid=[817]}, 88) = 817 [pid 814] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 816] rt_sigprocmask(SIG_SETMASK, [], [pid 814] close(4 [pid 816] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 814] <... close resumed>) = 0 [pid 816] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 814] close(3 [pid 816] <... futex resumed>) = 0 [pid 816] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 814] <... close resumed>) = 0 [pid 812] <... creat resumed>) = 3 [pid 809] <... futex resumed>) = 0 [pid 815] ioctl(4, LOOP_SET_FD, 3 [pid 812] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 809] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 815] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 814] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 812] <... futex resumed>) = 1 [pid 808] <... futex resumed>) = 0 [pid 813] <... futex resumed>) = 0 [pid 809] <... futex resumed>) = 1 [pid 815] close(4 [pid 814] <... futex resumed>) = 1 [pid 813] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 812] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 811] <... futex resumed>) = 0 [pid 808] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 815] <... close resumed>) = 0 [pid 814] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 813] <... openat resumed>) = 4 [pid 812] <... openat resumed>) = 4 [pid 811] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 809] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 808] <... futex resumed>) = 0 [pid 815] close(3 [pid 814] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 813] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 812] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 811] <... futex resumed>) = 0 [pid 809] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 808] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 814] chdir("./file0" [pid 813] <... futex resumed>) = 0 [pid 808] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 815] <... close resumed>) = 0 [pid 814] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 813] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 812] <... futex resumed>) = 0 [pid 811] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 809] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 808] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 815] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 814] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 813] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 812] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 811] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 809] <... futex resumed>) = 0 [pid 808] <... futex resumed>) = 0 [pid 815] <... futex resumed>) = 1 [pid 814] <... futex resumed>) = 0 [pid 813] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 812] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 811] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 810] <... futex resumed>) = 0 [pid 809] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 808] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 815] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 814] creat("./bus", 000 [pid 813] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 812] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 811] <... futex resumed>) = 0 [pid 810] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 808] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 815] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 814] <... creat resumed>) = 3 [pid 813] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 812] <... futex resumed>) = 0 [pid 811] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 810] <... futex resumed>) = 0 [pid 808] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 815] chdir("./file0" [pid 814] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 813] <... futex resumed>) = 1 [pid 812] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 811] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 810] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 809] <... futex resumed>) = 0 [pid 808] <... futex resumed>) = 0 ./strace-static-x86_64: Process 817 attached [pid 815] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 814] <... futex resumed>) = 0 [pid 813] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 812] <... open resumed>) = 5 [pid 811] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 809] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 808] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 817] set_robust_list(0x7fe6f87d19a0, 24 [pid 815] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 814] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 813] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 812] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 811] <... futex resumed>) = 0 [pid 809] <... futex resumed>) = 0 [pid 808] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 817] <... set_robust_list resumed>) = 0 [pid 815] <... futex resumed>) = 1 [pid 814] <... openat resumed>) = 4 [pid 813] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 812] <... futex resumed>) = 0 [pid 811] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 810] <... futex resumed>) = 0 [pid 809] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 808] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 817] rt_sigprocmask(SIG_SETMASK, [], [pid 815] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 814] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 813] <... open resumed>) = 5 [pid 812] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 811] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 810] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 808] <... futex resumed>) = 0 [pid 817] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 815] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 814] <... futex resumed>) = 0 [pid 813] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 810] <... futex resumed>) = 0 [pid 808] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 817] memfd_create("syzkaller", 0 [pid 815] creat("./bus", 000 [pid 814] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 813] <... futex resumed>) = 1 [pid 812] <... mmap resumed>) = 0x20000000 [pid 811] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 810] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 809] <... futex resumed>) = 0 [pid 817] <... memfd_create resumed>) = 3 [pid 815] <... creat resumed>) = 3 [pid 814] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 813] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 812] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 811] <... futex resumed>) = 0 [pid 809] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 817] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 815] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 814] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 813] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 812] <... futex resumed>) = 1 [pid 811] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 809] <... futex resumed>) = 0 [pid 808] <... futex resumed>) = 0 [pid 817] <... mmap resumed>) = 0x7fe6f03b1000 [pid 815] <... futex resumed>) = 1 [pid 814] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 813] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 812] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 810] <... futex resumed>) = 0 [pid 809] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 808] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 815] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 814] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 813] <... mmap resumed>) = 0x20000000 [pid 812] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 810] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 808] <... futex resumed>) = 0 [pid 815] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 814] <... futex resumed>) = 1 [pid 813] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 812] memfd_create("syzkaller", 0 [pid 811] <... futex resumed>) = 0 [pid 810] <... futex resumed>) = 0 [pid 808] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 815] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 814] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 813] <... futex resumed>) = 1 [pid 812] <... memfd_create resumed>) = 6 [pid 811] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 810] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 809] <... futex resumed>) = 0 [pid 815] <... openat resumed>) = 4 [pid 814] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 813] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 812] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 811] <... futex resumed>) = 0 [pid 809] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 815] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 814] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 813] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 812] <... mmap resumed>) = 0x7fe6f03b1000 [pid 811] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 817] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 815] <... futex resumed>) = 1 [pid 814] <... open resumed>) = 5 [pid 813] memfd_create("syzkaller", 0 [pid 810] <... futex resumed>) = 0 [pid 809] <... futex resumed>) = 0 [pid 814] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 813] <... memfd_create resumed>) = 6 [pid 810] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 814] <... futex resumed>) = 0 [pid 813] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 810] <... futex resumed>) = 0 [pid 814] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 813] <... mmap resumed>) = 0x7fe6f03b1000 [pid 810] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 817] <... write resumed>) = 262144 [pid 815] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 813] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 812] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 811] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 809] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 817] munmap(0x7fe6f03b1000, 138412032 [pid 815] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 813] <... write resumed>) = 131072 [pid 813] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 813] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 813] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 813] ioctl(7, LOOP_CLR_FD) = 0 [pid 817] <... munmap resumed>) = 0 [pid 815] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 812] <... write resumed>) = 131072 [pid 811] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 815] <... futex resumed>) = 1 [pid 814] <... futex resumed>) = 0 [pid 813] ioctl(7, LOOP_SET_FD, 6 [pid 812] munmap(0x7fe6f03b1000, 138412032 [pid 811] <... futex resumed>) = 1 [pid 810] <... futex resumed>) = 0 [pid 815] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 814] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 813] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 811] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 810] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 815] <... open resumed>) = 5 [pid 814] <... mmap resumed>) = 0x20000000 [pid 813] close(7 [pid 812] <... munmap resumed>) = 0 [pid 810] <... futex resumed>) = 0 [pid 817] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 815] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 814] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 813] <... close resumed>) = 0 [pid 812] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 810] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 817] <... openat resumed>) = 4 [pid 815] <... futex resumed>) = 0 [pid 814] <... futex resumed>) = 1 [pid 813] close(6 [pid 812] <... openat resumed>) = 7 [pid 811] <... futex resumed>) = 0 [pid 810] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 817] ioctl(4, LOOP_SET_FD, 3 [pid 815] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 814] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 813] <... close resumed>) = 0 [pid 812] ioctl(7, LOOP_SET_FD, 6 [pid 811] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 810] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 817] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 815] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 814] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 813] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 812] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 811] <... futex resumed>) = 0 [pid 810] <... futex resumed>) = 0 [pid 817] ioctl(4, LOOP_CLR_FD [pid 815] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 814] memfd_create("syzkaller", 0 [pid 813] <... futex resumed>) = 1 [pid 812] ioctl(7, LOOP_CLR_FD [pid 811] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 810] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 809] <... futex resumed>) = 0 [pid 817] <... ioctl resumed>) = 0 [pid 815] <... mmap resumed>) = 0x20000000 [pid 814] <... memfd_create resumed>) = 6 [pid 813] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 812] <... ioctl resumed>) = 0 [pid 815] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 814] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 813] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 809] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 815] <... futex resumed>) = 1 [pid 814] <... mmap resumed>) = 0x7fe6f03b1000 [pid 813] mknod(0x20000000, 000 [pid 810] <... futex resumed>) = 0 [pid 809] <... futex resumed>) = 0 [pid 815] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 814] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 813] <... mknod resumed>) = -1 EEXIST (File exists) [pid 810] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 809] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 817] ioctl(4, LOOP_SET_FD, 3 [pid 815] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 814] <... write resumed>) = 131072 [pid 813] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 812] ioctl(7, LOOP_SET_FD, 6 [pid 810] <... futex resumed>) = 0 [pid 809] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 817] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 815] memfd_create("syzkaller", 0 [pid 814] munmap(0x7fe6f03b1000, 138412032 [pid 813] <... futex resumed>) = 0 [pid 812] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 810] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 809] exit_group(0 [pid 817] close(4 [pid 815] <... memfd_create resumed>) = 6 [pid 814] <... munmap resumed>) = 0 [pid 812] close(7 [pid 809] <... exit_group resumed>) = ? [pid 817] <... close resumed>) = 0 [pid 815] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 814] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 813] +++ exited with 0 +++ [pid 812] <... close resumed>) = 0 [pid 814] <... openat resumed>) = 7 [pid 814] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 814] ioctl(7, LOOP_CLR_FD) = 0 [pid 809] +++ exited with 0 +++ [pid 812] close(6 [pid 815] <... mmap resumed>) = 0x7fe6f03b1000 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=809, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 817] close(3 [pid 815] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 812] <... close resumed>) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 814] ioctl(7, LOOP_SET_FD, 6 [pid 817] <... close resumed>) = 0 [pid 814] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 814] close(7 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 817] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 815] <... write resumed>) = 131072 [pid 814] <... close resumed>) = 0 [pid 812] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... openat resumed>) = 3 [pid 817] <... futex resumed>) = 1 [pid 816] <... futex resumed>) = 0 [pid 815] munmap(0x7fe6f03b1000, 138412032 [pid 814] close(6 [pid 812] <... futex resumed>) = 1 [pid 808] <... futex resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 817] chdir("./file0" [pid 816] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 815] <... munmap resumed>) = 0 [pid 814] <... close resumed>) = 0 [pid 812] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 808] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... ioctl resumed>) = 0 [pid 817] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 816] <... futex resumed>) = 0 [pid 815] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 814] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 812] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 808] <... futex resumed>) = 0 [pid 302] close(3 [pid 817] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 816] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 815] <... openat resumed>) = 7 [pid 814] <... futex resumed>) = 1 [pid 812] mknod(0x20000000, 000 [pid 811] <... futex resumed>) = 0 [pid 808] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] <... close resumed>) = 0 [pid 817] <... futex resumed>) = 0 [pid 816] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 815] ioctl(7, LOOP_SET_FD, 6 [pid 814] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 812] <... mknod resumed>) = -1 EEXIST (File exists) [pid 811] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 817] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 816] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 815] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 814] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 812] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 811] <... futex resumed>) = 0 [pid 817] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 816] <... futex resumed>) = 0 [pid 815] ioctl(7, LOOP_CLR_FD [pid 814] mknod(0x20000000, 000 [pid 812] <... futex resumed>) = 1 [pid 811] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 808] <... futex resumed>) = 0 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 818 [pid 817] creat("./bus", 000 [pid 816] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 815] <... ioctl resumed>) = 0 [pid 814] <... mknod resumed>) = -1 EEXIST (File exists) [pid 812] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 808] exit_group(0 [pid 817] <... creat resumed>) = 3 [pid 814] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 812] <... futex resumed>) = ? [pid 808] <... exit_group resumed>) = ? [pid 817] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 814] <... futex resumed>) = 1 [pid 812] +++ exited with 0 +++ [pid 811] <... futex resumed>) = 0 [pid 808] +++ exited with 0 +++ [pid 817] <... futex resumed>) = 1 [pid 816] <... futex resumed>) = 0 [pid 814] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 811] exit_group(0 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=808, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 817] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 816] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 815] ioctl(7, LOOP_SET_FD, 6 [pid 814] <... futex resumed>) = ? [pid 811] <... exit_group resumed>) = ? [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 817] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 816] <... futex resumed>) = 0 [pid 815] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 814] +++ exited with 0 +++ [pid 811] +++ exited with 0 +++ [pid 817] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 816] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 815] close(7 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=811, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 817] <... openat resumed>) = 4 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 817] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 815] <... close resumed>) = 0 [pid 817] <... futex resumed>) = 1 [pid 816] <... futex resumed>) = 0 [pid 815] close(6 [pid 817] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 816] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 818 attached [pid 818] set_robust_list(0x5555636e06a0, 24 [pid 817] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 816] <... futex resumed>) = 0 [pid 815] <... close resumed>) = 0 [pid 817] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 816] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 815] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 818] <... set_robust_list resumed>) = 0 [pid 815] <... futex resumed>) = 1 [pid 810] <... futex resumed>) = 0 [pid 815] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 810] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 815] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 810] <... futex resumed>) = 0 [pid 817] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 815] mknod(0x20000000, 000 [pid 810] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 817] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 815] <... mknod resumed>) = -1 EEXIST (File exists) [pid 817] <... futex resumed>) = 1 [pid 815] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 817] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 816] <... futex resumed>) = 0 [pid 815] <... futex resumed>) = 1 [pid 810] <... futex resumed>) = 0 [pid 816] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 815] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 810] exit_group(0 [pid 817] <... futex resumed>) = 0 [pid 816] <... futex resumed>) = 1 [pid 815] <... futex resumed>) = ? [pid 810] <... exit_group resumed>) = ? [pid 306] <... restart_syscall resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 817] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 816] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 815] +++ exited with 0 +++ [pid 810] +++ exited with 0 +++ [pid 817] <... open resumed>) = 5 [pid 817] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=810, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 817] <... futex resumed>) = 1 [pid 816] <... futex resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 304] <... openat resumed>) = 3 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 818] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 817] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 816] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] ioctl(3, LOOP_CLR_FD [pid 304] ioctl(3, LOOP_CLR_FD [pid 818] <... prctl resumed>) = 0 [pid 817] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 816] <... futex resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 818] setpgid(0, 0 [pid 817] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 816] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] close(3 [pid 304] close(3 [pid 818] <... setpgid resumed>) = 0 [pid 817] <... mmap resumed>) = 0x20000000 [pid 306] <... close resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 818] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 817] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 818] <... openat resumed>) = 3 [pid 817] <... futex resumed>) = 1 [pid 816] <... futex resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 818] write(3, "1000", 4 [pid 817] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 816] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 819 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 820 [pid 818] <... write resumed>) = 4 [pid 817] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 816] <... futex resumed>) = 0 [pid 303] <... openat resumed>) = 3 [pid 818] close(3 [pid 817] memfd_create("syzkaller", 0 [pid 816] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 303] ioctl(3, LOOP_CLR_FD [pid 818] <... close resumed>) = 0 [pid 817] <... memfd_create resumed>) = 6 [pid 303] <... ioctl resumed>) = 0 executing program [pid 818] write(1, "executing program\n", 18 [pid 817] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 303] close(3 [pid 818] <... write resumed>) = 18 [pid 817] <... mmap resumed>) = 0x7fe6f03b1000 [pid 303] <... close resumed>) = 0 [pid 818] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 818] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 818] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 818] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 818] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 818] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 818] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 817] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 818] <... clone3 resumed> => {parent_tid=[821]}, 88) = 821 [pid 818] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 817] <... write resumed>) = 131072 [pid 818] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 818] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 817] munmap(0x7fe6f03b1000, 138412032 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 822 ./strace-static-x86_64: Process 820 attached [pid 817] <... munmap resumed>) = 0 [pid 817] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 7 [pid 817] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 817] ioctl(7, LOOP_CLR_FD) = 0 [pid 820] set_robust_list(0x5555636e06a0, 24) = 0 [pid 820] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 820] setpgid(0, 0) = 0 [pid 820] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 820] write(3, "1000", 4) = 4 [pid 820] close(3) = 0 [pid 820] write(1, "executing program\n", 18executing program ) = 18 [pid 820] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 820] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 820] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 820] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 820] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 820] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 820] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[823]}, 88) = 823 [pid 820] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 820] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 820] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 821 attached [pid 821] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 817] ioctl(7, LOOP_SET_FD, 6 [pid 821] rt_sigprocmask(SIG_SETMASK, [], [pid 817] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 821] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 817] close(7./strace-static-x86_64: Process 819 attached [pid 821] memfd_create("syzkaller", 0 [pid 817] <... close resumed>) = 0 [pid 819] set_robust_list(0x5555636e06a0, 24 [pid 817] close(6 [pid 821] <... memfd_create resumed>) = 3 [pid 821] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 819] <... set_robust_list resumed>) = 0 [pid 817] <... close resumed>) = 0 [pid 817] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 816] <... futex resumed>) = 0 [pid 817] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 816] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 819] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 817] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 816] <... futex resumed>) = 0 [pid 817] mknod(0x20000000, 000 [pid 816] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 819] <... prctl resumed>) = 0 [pid 817] <... mknod resumed>) = -1 EEXIST (File exists) [pid 819] setpgid(0, 0 [pid 817] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 819] <... setpgid resumed>) = 0 [pid 817] <... futex resumed>) = 1 [pid 816] <... futex resumed>) = 0 [pid 817] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 816] exit_group(0 [pid 817] <... futex resumed>) = ? [pid 816] <... exit_group resumed>) = ? [pid 819] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 817] +++ exited with 0 +++ [pid 821] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 819] <... openat resumed>) = 3 [pid 816] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=816, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] restart_syscall(<... resuming interrupted clone ...>executing program ./strace-static-x86_64: Process 822 attached [pid 821] <... write resumed>) = 262144 [pid 819] write(3, "1000", 4 [pid 822] set_robust_list(0x5555636e06a0, 24 [pid 819] <... write resumed>) = 4 [pid 819] close(3 [pid 822] <... set_robust_list resumed>) = 0 [pid 819] <... close resumed>) = 0 [pid 822] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 821] munmap(0x7fe6f03b1000, 138412032 [pid 819] write(1, "executing program\n", 18 [pid 822] <... prctl resumed>) = 0 [pid 819] <... write resumed>) = 18 [pid 822] setpgid(0, 0 [pid 819] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 822] <... setpgid resumed>) = 0 [pid 821] <... munmap resumed>) = 0 [pid 819] <... futex resumed>) = 0 [pid 822] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 819] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 822] <... openat resumed>) = 3 [pid 819] <... rt_sigaction resumed>NULL, 8) = 0 [pid 822] write(3, "1000", 4 [pid 819] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 821] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 822] <... write resumed>) = 4 [pid 819] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 822] close(3 [pid 819] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 822] <... close resumed>) = 0 [pid 819] <... mmap resumed>) = 0x7fe6f87b1000 executing program [pid 822] write(1, "executing program\n", 18 [pid 819] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 822] <... write resumed>) = 18 [pid 819] <... mprotect resumed>) = 0 [pid 822] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 821] <... openat resumed>) = 4 [pid 822] <... futex resumed>) = 0 [pid 819] rt_sigprocmask(SIG_BLOCK, ~[], [pid 822] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 819] <... rt_sigprocmask resumed>[], 8) = 0 [pid 822] <... rt_sigaction resumed>NULL, 8) = 0 [pid 819] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 822] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 822] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 819] <... clone3 resumed> => {parent_tid=[824]}, 88) = 824 [pid 822] <... mmap resumed>) = 0x7fe6f87b1000 [pid 819] rt_sigprocmask(SIG_SETMASK, [], [pid 822] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 819] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 822] <... mprotect resumed>) = 0 [pid 819] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 823 attached [pid 822] rt_sigprocmask(SIG_BLOCK, ~[], [pid 819] <... futex resumed>) = 0 [pid 822] <... rt_sigprocmask resumed>[], 8) = 0 [pid 819] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 822] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 823] set_robust_list(0x7fe6f87d19a0, 24 [pid 822] <... clone3 resumed> => {parent_tid=[825]}, 88) = 825 [pid 822] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 822] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 823] <... set_robust_list resumed>) = 0 [pid 822] <... futex resumed>) = 0 [pid 823] rt_sigprocmask(SIG_SETMASK, [], [pid 822] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 821] ioctl(4, LOOP_SET_FD, 3 [pid 823] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 821] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 823] memfd_create("syzkaller", 0 [pid 821] ioctl(4, LOOP_CLR_FD [pid 823] <... memfd_create resumed>) = 3 [pid 821] <... ioctl resumed>) = 0 [pid 823] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 823] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 821] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 821] close(4) = 0 [pid 821] close(3) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 821] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 818] <... futex resumed>) = 0 [pid 821] chdir("./file0" [pid 818] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 821] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 818] <... futex resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 821] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 818] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] ioctl(3, LOOP_CLR_FD [pid 821] <... futex resumed>) = 0 [pid 818] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 305] <... ioctl resumed>) = 0 [pid 821] creat("./bus", 000 [pid 818] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] close(3 [pid 821] <... creat resumed>) = 3 [pid 818] <... futex resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 821] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 818] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 821] <... futex resumed>) = 0 [pid 818] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ./strace-static-x86_64: Process 825 attached ./strace-static-x86_64: Process 824 attached [pid 821] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 818] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 826 [pid 825] set_robust_list(0x7fe6f87d19a0, 24 [pid 824] set_robust_list(0x7fe6f87d19a0, 24 [pid 823] <... write resumed>) = 262144 [pid 821] <... openat resumed>) = 4 [pid 818] <... futex resumed>) = 0 [pid 821] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 818] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 825] <... set_robust_list resumed>) = 0 [pid 824] <... set_robust_list resumed>) = 0 [pid 821] <... futex resumed>) = 0 [pid 818] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 825] rt_sigprocmask(SIG_SETMASK, [], [pid 824] rt_sigprocmask(SIG_SETMASK, [], [pid 821] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 818] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 825] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 824] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 821] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 818] <... futex resumed>) = 0 [pid 824] memfd_create("syzkaller", 0 [pid 821] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 818] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 825] memfd_create("syzkaller", 0 [pid 824] <... memfd_create resumed>) = 3 [pid 821] <... futex resumed>) = 0 [pid 818] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 825] <... memfd_create resumed>) = 3 [pid 824] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 823] munmap(0x7fe6f03b1000, 138412032 [pid 821] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 818] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 825] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 824] <... mmap resumed>) = 0x7fe6f03b1000 [pid 823] <... munmap resumed>) = 0 [pid 821] <... open resumed>) = 5 [pid 818] <... futex resumed>) = 0 [pid 825] <... mmap resumed>) = 0x7fe6f03b1000 [pid 823] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 821] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 818] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 823] <... openat resumed>) = 4 [pid 821] <... futex resumed>) = 0 [pid 818] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 823] ioctl(4, LOOP_SET_FD, 3 [pid 821] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 818] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 823] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 821] <... mmap resumed>) = 0x20000000 [pid 818] <... futex resumed>) = 0 [pid 823] ioctl(4, LOOP_CLR_FD [pid 821] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 818] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 823] <... ioctl resumed>) = 0 [pid 821] <... futex resumed>) = 0 [pid 818] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 821] memfd_create("syzkaller", 0 [pid 818] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 821] <... memfd_create resumed>) = 6 [pid 818] <... futex resumed>) = 0 [pid 824] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 821] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 818] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 821] <... mmap resumed>) = 0x7fe6f03b1000 [pid 821] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 825] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 823] ioctl(4, LOOP_SET_FD, 3 [pid 821] <... write resumed>) = 131072 [pid 823] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 821] munmap(0x7fe6f03b1000, 138412032 [pid 823] close(4 [pid 821] <... munmap resumed>) = 0 [pid 824] <... write resumed>) = 262144 [pid 823] <... close resumed>) = 0 [pid 821] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 823] close(3 [pid 821] <... openat resumed>) = 7 ./strace-static-x86_64: Process 826 attached [pid 825] <... write resumed>) = 262144 [pid 824] munmap(0x7fe6f03b1000, 138412032 [pid 823] <... close resumed>) = 0 [pid 821] ioctl(7, LOOP_SET_FD, 6 [pid 826] set_robust_list(0x5555636e06a0, 24 [pid 823] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 821] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 826] <... set_robust_list resumed>) = 0 [pid 823] <... futex resumed>) = 1 [pid 821] ioctl(7, LOOP_CLR_FD [pid 820] <... futex resumed>) = 0 [pid 826] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 823] chdir("./file0" [pid 821] <... ioctl resumed>) = 0 [pid 820] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 826] <... prctl resumed>) = 0 [pid 823] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 820] <... futex resumed>) = 0 [pid 826] setpgid(0, 0 [pid 823] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 820] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 826] <... setpgid resumed>) = 0 [pid 823] <... futex resumed>) = 0 [pid 820] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 826] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 823] creat("./bus", 000 [pid 820] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 826] <... openat resumed>) = 3 [pid 823] <... creat resumed>) = 3 [pid 820] <... futex resumed>) = 0 [pid 826] write(3, "1000", 4 [pid 823] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 820] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 826] <... write resumed>) = 4 [pid 823] <... futex resumed>) = 0 [pid 821] ioctl(7, LOOP_SET_FD, 6 [pid 820] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 826] close(3 [pid 823] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 821] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 820] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 826] <... close resumed>) = 0 [pid 823] <... openat resumed>) = 4 [pid 821] close(7 [pid 820] <... futex resumed>) = 0 executing program [pid 826] write(1, "executing program\n", 18 [pid 823] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 821] <... close resumed>) = 0 [pid 820] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 826] <... write resumed>) = 18 [pid 823] <... futex resumed>) = 0 [pid 821] close(6 [pid 820] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 826] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 823] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 821] <... close resumed>) = 0 [pid 820] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 826] <... futex resumed>) = 0 [pid 823] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 821] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 820] <... futex resumed>) = 0 [pid 826] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 825] munmap(0x7fe6f03b1000, 138412032 [pid 824] <... munmap resumed>) = 0 [pid 823] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 821] <... futex resumed>) = 1 [pid 820] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 818] <... futex resumed>) = 0 [pid 826] <... rt_sigaction resumed>NULL, 8) = 0 [pid 823] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 821] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 818] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 824] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 826] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 825] <... munmap resumed>) = 0 [pid 823] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 821] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 818] <... futex resumed>) = 0 [pid 826] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 823] <... futex resumed>) = 1 [pid 821] mknod(0x20000000, 000 [pid 820] <... futex resumed>) = 0 [pid 818] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 826] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 825] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 824] <... openat resumed>) = 4 [pid 823] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 821] <... mknod resumed>) = -1 EEXIST (File exists) [pid 820] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 826] <... mmap resumed>) = 0x7fe6f87b1000 [pid 825] <... openat resumed>) = 4 [pid 824] ioctl(4, LOOP_SET_FD, 3 [pid 823] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 821] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 820] <... futex resumed>) = 0 [pid 826] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 825] ioctl(4, LOOP_SET_FD, 3 [pid 824] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 823] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 821] <... futex resumed>) = 1 [pid 820] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 818] <... futex resumed>) = 0 [pid 826] <... mprotect resumed>) = 0 [pid 825] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 824] ioctl(4, LOOP_CLR_FD [pid 823] <... open resumed>) = 5 [pid 821] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 818] exit_group(0 [pid 826] rt_sigprocmask(SIG_BLOCK, ~[], [pid 825] ioctl(4, LOOP_CLR_FD [pid 824] <... ioctl resumed>) = 0 [pid 823] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 821] <... futex resumed>) = ? [pid 818] <... exit_group resumed>) = ? [pid 826] <... rt_sigprocmask resumed>[], 8) = 0 [pid 825] <... ioctl resumed>) = 0 [pid 823] <... futex resumed>) = 1 [pid 821] +++ exited with 0 +++ [pid 820] <... futex resumed>) = 0 [pid 818] +++ exited with 0 +++ [pid 826] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 823] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 820] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=818, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 823] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 820] <... futex resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 826] <... clone3 resumed> => {parent_tid=[827]}, 88) = 827 [pid 823] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 820] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] <... restart_syscall resumed>) = 0 [pid 826] rt_sigprocmask(SIG_SETMASK, [], [pid 823] <... mmap resumed>) = 0x20000000 [pid 826] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 825] ioctl(4, LOOP_SET_FD, 3 [pid 824] ioctl(4, LOOP_SET_FD, 3 [pid 823] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 826] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 825] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 824] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 823] <... futex resumed>) = 1 [pid 820] <... futex resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 826] <... futex resumed>) = 0 [pid 825] close(4 [pid 824] close(4 [pid 823] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 820] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... openat resumed>) = 3 [pid 826] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 825] <... close resumed>) = 0 [pid 824] <... close resumed>) = 0 [pid 823] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 820] <... futex resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 823] memfd_create("syzkaller", 0 [pid 820] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 302] <... ioctl resumed>) = 0 [pid 823] <... memfd_create resumed>) = 6 [pid 302] close(3 [pid 823] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 302] <... close resumed>) = 0 [pid 823] <... mmap resumed>) = 0x7fe6f03b1000 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 823] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 828 [pid 823] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 825] close(3 [pid 824] close(3 [pid 823] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 7 [pid 823] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 823] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 828 attached [pid 825] <... close resumed>) = 0 [pid 828] set_robust_list(0x5555636e06a0, 24) = 0 [pid 828] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 824] <... close resumed>) = 0 [pid 828] <... prctl resumed>) = 0 [pid 828] setpgid(0, 0 [pid 825] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 824] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 825] <... futex resumed>) = 1 [pid 824] <... futex resumed>) = 1 [pid 823] ioctl(7, LOOP_SET_FD, 6 [pid 822] <... futex resumed>) = 0 [pid 819] <... futex resumed>) = 0 [pid 825] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 824] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 823] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 822] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 819] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 825] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 824] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 823] close(7 [pid 825] chdir("./file0" [pid 824] chdir("./file0" [pid 823] <... close resumed>) = 0 [pid 822] <... futex resumed>) = 0 [pid 819] <... futex resumed>) = 0 [pid 825] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 824] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 823] close(6 [pid 822] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 819] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 827 attached [pid 825] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 824] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 823] <... close resumed>) = 0 [pid 822] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 827] set_robust_list(0x7fe6f87d19a0, 24 [pid 825] <... futex resumed>) = 0 [pid 824] <... futex resumed>) = 0 [pid 823] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 822] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 819] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 827] <... set_robust_list resumed>) = 0 [pid 825] creat("./bus", 000 [pid 824] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 823] <... futex resumed>) = 1 [pid 822] <... futex resumed>) = 0 [pid 820] <... futex resumed>) = 0 [pid 819] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 827] rt_sigprocmask(SIG_SETMASK, [], [pid 825] <... creat resumed>) = 3 [pid 824] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 823] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 822] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 820] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 827] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 825] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 824] creat("./bus", 000 [pid 823] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 822] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 820] <... futex resumed>) = 0 [pid 819] <... futex resumed>) = 0 [pid 827] memfd_create("syzkaller", 0 [pid 825] <... futex resumed>) = 0 [pid 824] <... creat resumed>) = 3 [pid 823] mknod(0x20000000, 000 [pid 822] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 820] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 819] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 827] <... memfd_create resumed>) = 3 [pid 825] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 824] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 823] <... mknod resumed>) = -1 EEXIST (File exists) [pid 822] <... futex resumed>) = 0 [pid 827] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 825] <... openat resumed>) = 4 [pid 824] <... futex resumed>) = 0 [pid 823] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 822] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 819] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 827] <... mmap resumed>) = 0x7fe6f03b1000 [pid 825] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 824] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 823] <... futex resumed>) = 1 [pid 822] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 820] <... futex resumed>) = 0 [pid 819] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 825] <... futex resumed>) = 0 [pid 824] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 823] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 822] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 820] exit_group(0 [pid 819] <... futex resumed>) = 0 [pid 828] <... setpgid resumed>) = 0 [pid 825] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 824] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 823] <... futex resumed>) = ? [pid 822] <... futex resumed>) = 0 [pid 820] <... exit_group resumed>) = ? [pid 819] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 828] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 827] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 825] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 824] <... openat resumed>) = 4 [pid 823] +++ exited with 0 +++ [pid 822] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 820] +++ exited with 0 +++ [pid 828] <... openat resumed>) = 3 [pid 825] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 824] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 822] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=820, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 828] write(3, "1000", 4 [pid 825] <... futex resumed>) = 0 [pid 824] <... futex resumed>) = 1 [pid 822] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 819] <... futex resumed>) = 0 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 828] <... write resumed>) = 4 [pid 825] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 824] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 822] <... futex resumed>) = 0 [pid 819] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 825] <... open resumed>) = 5 [pid 824] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 822] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 819] <... futex resumed>) = 0 [pid 825] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 824] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 822] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 819] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 825] <... futex resumed>) = 0 [pid 822] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 828] close(3 [pid 825] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 824] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 822] <... futex resumed>) = 0 executing program [pid 828] <... close resumed>) = 0 [pid 828] write(1, "executing program\n", 18 [pid 825] <... mmap resumed>) = 0x20000000 [pid 822] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 828] <... write resumed>) = 18 [pid 827] <... write resumed>) = 262144 [pid 825] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 824] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 822] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 828] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 827] munmap(0x7fe6f03b1000, 138412032 [pid 825] <... futex resumed>) = 0 [pid 824] <... futex resumed>) = 1 [pid 822] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 819] <... futex resumed>) = 0 [pid 828] <... futex resumed>) = 0 [pid 825] memfd_create("syzkaller", 0 [pid 824] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 822] <... futex resumed>) = 0 [pid 819] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 827] <... munmap resumed>) = 0 [pid 828] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 827] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 825] <... memfd_create resumed>) = 6 [pid 824] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 822] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 819] <... futex resumed>) = 0 [pid 828] <... rt_sigaction resumed>NULL, 8) = 0 [pid 827] <... openat resumed>) = 4 [pid 825] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 824] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 819] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 828] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 825] <... mmap resumed>) = 0x7fe6f03b1000 [pid 828] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 827] ioctl(4, LOOP_SET_FD, 3 [pid 824] <... open resumed>) = 5 [pid 828] <... mmap resumed>) = 0x7fe6f87b1000 [pid 828] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 828] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 828] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[829]}, 88) = 829 [pid 828] rt_sigprocmask(SIG_SETMASK, [], [pid 827] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 825] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 824] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 828] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 828] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 828] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 825] <... write resumed>) = 131072 [pid 824] <... futex resumed>) = 1 [pid 819] <... futex resumed>) = 0 [pid 827] ioctl(4, LOOP_CLR_FD [pid 825] munmap(0x7fe6f03b1000, 138412032 [pid 824] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 819] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 827] <... ioctl resumed>) = 0 [pid 825] <... munmap resumed>) = 0 [pid 824] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 819] <... futex resumed>) = 0 [pid 825] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 824] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 819] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 824] <... mmap resumed>) = 0x20000000 [pid 825] <... openat resumed>) = 7 [pid 824] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 825] ioctl(7, LOOP_SET_FD, 6 [pid 824] <... futex resumed>) = 1 [pid 819] <... futex resumed>) = 0 [pid 825] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 824] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 825] ioctl(7, LOOP_CLR_FD [pid 819] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 825] <... ioctl resumed>) = 0 [pid 824] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 819] <... futex resumed>) = 0 [pid 824] memfd_create("syzkaller", 0 [pid 819] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 829 attached [pid 829] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 829] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 829] memfd_create("syzkaller", 0) = 3 [pid 829] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 829] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 304] <... restart_syscall resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 304] ioctl(3, LOOP_CLR_FD) = 0 [pid 304] close(3 [pid 824] <... memfd_create resumed>) = 6 [pid 304] <... close resumed>) = 0 [pid 827] ioctl(4, LOOP_SET_FD, 3 [pid 825] ioctl(7, LOOP_SET_FD, 6 [pid 824] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 827] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 825] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 824] <... mmap resumed>) = 0x7fe6f03b1000 [pid 827] close(4 [pid 825] close(7 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 830 [pid 829] <... write resumed>) = 262144 [pid 827] <... close resumed>) = 0 [pid 825] <... close resumed>) = 0 [pid 824] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 827] close(3 [pid 825] close(6 [pid 829] munmap(0x7fe6f03b1000, 138412032 [pid 824] <... write resumed>) = 131072 [pid 829] <... munmap resumed>) = 0 [pid 825] <... close resumed>) = 0 [pid 824] munmap(0x7fe6f03b1000, 138412032 [pid 825] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 824] <... munmap resumed>) = 0 [pid 822] <... futex resumed>) = 0 [pid 825] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 824] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 822] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 825] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 825] mknod(0x20000000, 000 [pid 824] <... openat resumed>) = 7 [pid 822] <... futex resumed>) = 0 [pid 825] <... mknod resumed>) = -1 EEXIST (File exists) [pid 824] ioctl(7, LOOP_SET_FD, 6 [pid 822] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 825] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 824] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 822] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 825] <... futex resumed>) = 0 [pid 824] ioctl(7, LOOP_CLR_FD [pid 822] exit_group(0 [pid 825] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 824] <... ioctl resumed>) = 0 [pid 822] <... exit_group resumed>) = ? [pid 825] <... futex resumed>) = ? [pid 829] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 829] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 829] ioctl(4, LOOP_CLR_FD) = 0 [pid 825] +++ exited with 0 +++ [pid 822] +++ exited with 0 +++ [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=822, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 827] <... close resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 827] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 826] <... futex resumed>) = 0 [pid 826] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 826] <... futex resumed>) = 0 [pid 827] chdir("./file0" [pid 826] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... openat resumed>) = 3 [pid 827] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 827] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 824] ioctl(7, LOOP_SET_FD, 6 [pid 303] ioctl(3, LOOP_CLR_FD [pid 824] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 827] <... futex resumed>) = 1 [pid 826] <... futex resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 827] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 826] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 824] close(7 [pid 303] close(3 [pid 827] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 826] <... futex resumed>) = 0 [pid 827] creat("./bus", 000 [pid 826] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 824] <... close resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 824] close(6 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 830 attached [pid 830] set_robust_list(0x5555636e06a0, 24 [pid 824] <... close resumed>) = 0 [pid 830] <... set_robust_list resumed>) = 0 [pid 830] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 824] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 827] <... creat resumed>) = 3 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 831 [pid 827] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 824] <... futex resumed>) = 1 [pid 819] <... futex resumed>) = 0 [pid 827] <... futex resumed>) = 1 [pid 826] <... futex resumed>) = 0 [pid 824] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 819] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 827] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 826] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 824] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 819] <... futex resumed>) = 0 [pid 827] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 826] <... futex resumed>) = 0 [pid 824] mknod(0x20000000, 000 [pid 819] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 827] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 826] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 824] <... mknod resumed>) = -1 EEXIST (File exists) [pid 827] <... openat resumed>) = 4 [pid 824] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 827] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 824] <... futex resumed>) = 1 [pid 819] <... futex resumed>) = 0 [pid 827] <... futex resumed>) = 1 [pid 826] <... futex resumed>) = 0 [pid 824] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 819] exit_group(0 [pid 829] ioctl(4, LOOP_SET_FD, 3 [pid 827] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 826] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 824] <... futex resumed>) = ? [pid 819] <... exit_group resumed>) = ? [pid 829] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 827] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 826] <... futex resumed>) = 0 [pid 824] +++ exited with 0 +++ [pid 829] close(4 [pid 826] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 829] <... close resumed>) = 0 [pid 829] close(3) = 0 [pid 827] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 819] +++ exited with 0 +++ [pid 829] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=819, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 829] <... futex resumed>) = 1 [pid 828] <... futex resumed>) = 0 [pid 827] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 829] chdir("./file0" [pid 828] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 827] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 829] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 828] <... futex resumed>) = 0 [pid 827] <... futex resumed>) = 1 [pid 826] <... futex resumed>) = 0 ./strace-static-x86_64: Process 831 attached [pid 829] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 828] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 827] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 826] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 829] <... futex resumed>) = 0 [pid 828] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 827] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 826] <... futex resumed>) = 0 [pid 831] set_robust_list(0x5555636e06a0, 24 [pid 830] <... prctl resumed>) = 0 [pid 829] creat("./bus", 000 [pid 828] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 830] setpgid(0, 0 [pid 829] <... creat resumed>) = 3 [pid 828] <... futex resumed>) = 0 [pid 830] <... setpgid resumed>) = 0 [pid 829] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 828] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 830] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 829] <... futex resumed>) = 0 [pid 828] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 830] <... openat resumed>) = 3 [pid 829] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 828] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 830] write(3, "1000", 4 [pid 829] <... openat resumed>) = 4 [pid 828] <... futex resumed>) = 0 [pid 830] <... write resumed>) = 4 [pid 829] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 828] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 830] close(3 [pid 829] <... futex resumed>) = 0 [pid 828] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 830] <... close resumed>) = 0 [pid 829] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 828] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 830] write(1, "executing program\n", 18 [pid 828] <... futex resumed>) = 0 [pid 830] <... write resumed>) = 18 [pid 828] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 830] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 830] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 830] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 830] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 830] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 830] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 830] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[832]}, 88) = 832 [pid 830] rt_sigprocmask(SIG_SETMASK, [], [pid 826] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 831] <... set_robust_list resumed>) = 0 [pid 830] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 829] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 827] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 830] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 829] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 827] <... open resumed>) = 5 [pid 831] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 827] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 831] <... prctl resumed>) = 0 [pid 830] <... futex resumed>) = 0 [pid 829] <... futex resumed>) = 1 [pid 828] <... futex resumed>) = 0 [pid 827] <... futex resumed>) = 1 [pid 826] <... futex resumed>) = 0 [pid 830] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 829] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 828] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 827] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 826] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 831] setpgid(0, 0 [pid 829] <... open resumed>) = 5 [pid 828] <... futex resumed>) = 0 [pid 831] <... setpgid resumed>) = 0 [pid 829] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 828] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 827] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 826] <... futex resumed>) = 0 [pid 829] <... futex resumed>) = 0 [pid 828] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 827] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 826] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 831] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 829] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 828] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 831] <... openat resumed>) = 3 [pid 829] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 828] <... futex resumed>) = 0 [pid 827] <... mmap resumed>) = 0x20000000 [pid 829] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 828] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 827] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 831] write(3, "1000", 4 [pid 829] <... mmap resumed>) = 0x20000000 [pid 306] <... restart_syscall resumed>) = 0 [pid 831] <... write resumed>) = 4 [pid 829] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 827] <... futex resumed>) = 1 [pid 826] <... futex resumed>) = 0 [pid 831] close(3 [pid 829] <... futex resumed>) = 1 [pid 828] <... futex resumed>) = 0 [pid 827] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 826] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 831] <... close resumed>) = 0 [pid 829] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 828] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 827] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 826] <... futex resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWRexecuting program [pid 831] write(1, "executing program\n", 18 [pid 829] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 828] <... futex resumed>) = 0 [pid 827] memfd_create("syzkaller", 0 [pid 826] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 306] <... openat resumed>) = 3 [pid 831] <... write resumed>) = 18 [pid 829] memfd_create("syzkaller", 0 [pid 828] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 827] <... memfd_create resumed>) = 6 [pid 306] ioctl(3, LOOP_CLR_FD [pid 831] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 829] <... memfd_create resumed>) = 6 [pid 827] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 306] <... ioctl resumed>) = 0 [pid 831] <... futex resumed>) = 0 [pid 829] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 827] <... mmap resumed>) = 0x7fe6f03b1000 [pid 306] close(3 [pid 831] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 829] <... mmap resumed>) = 0x7fe6f03b1000 [pid 306] <... close resumed>) = 0 [pid 831] <... rt_sigaction resumed>NULL, 8) = 0 [pid 829] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 827] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 831] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 829] <... write resumed>) = 131072 [pid 831] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 829] munmap(0x7fe6f03b1000, 138412032 [pid 827] <... write resumed>) = 131072 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 833 [pid 831] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 829] <... munmap resumed>) = 0 [pid 827] munmap(0x7fe6f03b1000, 138412032 [pid 831] <... mmap resumed>) = 0x7fe6f87b1000 [pid 829] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 831] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 829] <... openat resumed>) = 7 [pid 827] <... munmap resumed>) = 0 [pid 831] <... mprotect resumed>) = 0 [pid 829] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 827] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 831] rt_sigprocmask(SIG_BLOCK, ~[], [pid 829] ioctl(7, LOOP_CLR_FD [pid 831] <... rt_sigprocmask resumed>[], 8) = 0 [pid 829] <... ioctl resumed>) = 0 [pid 827] <... openat resumed>) = 7 [pid 831] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 827] ioctl(7, LOOP_SET_FD, 6 [pid 831] <... clone3 resumed> => {parent_tid=[834]}, 88) = 834 [pid 827] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 831] rt_sigprocmask(SIG_SETMASK, [], [pid 827] ioctl(7, LOOP_CLR_FD [pid 831] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 827] <... ioctl resumed>) = 0 [pid 831] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 832 attached [pid 831] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 832] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 832] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 832] memfd_create("syzkaller", 0 [pid 829] ioctl(7, LOOP_SET_FD, 6 [pid 832] <... memfd_create resumed>) = 3 [pid 829] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 832] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 829] close(7 [pid 827] ioctl(7, LOOP_SET_FD, 6./strace-static-x86_64: Process 833 attached [pid 832] <... mmap resumed>) = 0x7fe6f03b1000 [pid 829] <... close resumed>) = 0 [pid 827] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 833] set_robust_list(0x5555636e06a0, 24 [pid 832] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 829] close(6 [pid 827] close(7 [pid 833] <... set_robust_list resumed>) = 0 [pid 829] <... close resumed>) = 0 [pid 829] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 827] <... close resumed>) = 0 ./strace-static-x86_64: Process 834 attached [pid 833] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 829] <... futex resumed>) = 1 [pid 828] <... futex resumed>) = 0 [pid 827] close(6 [pid 834] set_robust_list(0x7fe6f87d19a0, 24 [pid 833] <... prctl resumed>) = 0 [pid 829] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 828] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 829] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 828] <... futex resumed>) = 0 [pid 829] mknod(0x20000000, 000 [pid 828] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 834] <... set_robust_list resumed>) = 0 [pid 833] setpgid(0, 0 [pid 829] <... mknod resumed>) = -1 EEXIST (File exists) [pid 827] <... close resumed>) = 0 [pid 834] rt_sigprocmask(SIG_SETMASK, [], [pid 833] <... setpgid resumed>) = 0 [pid 829] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 827] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 834] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 833] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 829] <... futex resumed>) = 1 [pid 828] <... futex resumed>) = 0 [pid 827] <... futex resumed>) = 1 [pid 826] <... futex resumed>) = 0 [pid 834] memfd_create("syzkaller", 0 [pid 833] <... openat resumed>) = 3 [pid 829] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 828] exit_group(0 [pid 827] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 826] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 834] <... memfd_create resumed>) = 3 [pid 833] write(3, "1000", 4 [pid 832] <... write resumed>) = 262144 [pid 829] <... futex resumed>) = ? [pid 828] <... exit_group resumed>) = ? [pid 827] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 826] <... futex resumed>) = 0 [pid 834] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 833] <... write resumed>) = 4 [pid 829] +++ exited with 0 +++ [pid 828] +++ exited with 0 +++ [pid 827] mknod(0x20000000, 000 [pid 826] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 834] <... mmap resumed>) = 0x7fe6f03b1000 [pid 833] close(3 [pid 827] <... mknod resumed>) = -1 EEXIST (File exists) [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=828, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 833] <... close resumed>) = 0 [pid 827] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] restart_syscall(<... resuming interrupted clone ...>executing program [pid 833] write(1, "executing program\n", 18 [pid 827] <... futex resumed>) = 1 [pid 826] <... futex resumed>) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 833] <... write resumed>) = 18 [pid 832] munmap(0x7fe6f03b1000, 138412032 [pid 827] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 826] exit_group(0 [pid 833] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 832] <... munmap resumed>) = 0 [pid 827] <... futex resumed>) = ? [pid 826] <... exit_group resumed>) = ? [pid 833] <... futex resumed>) = 0 [pid 832] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 827] +++ exited with 0 +++ [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 832] <... openat resumed>) = 4 [pid 302] <... openat resumed>) = 3 [pid 833] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 832] ioctl(4, LOOP_SET_FD, 3 [pid 826] +++ exited with 0 +++ [pid 302] ioctl(3, LOOP_CLR_FD [pid 833] <... rt_sigaction resumed>NULL, 8) = 0 [pid 832] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=826, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] <... ioctl resumed>) = 0 [pid 833] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 832] ioctl(4, LOOP_CLR_FD [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 302] close(3 [pid 834] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 833] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 832] <... ioctl resumed>) = 0 [pid 302] <... close resumed>) = 0 [pid 833] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 833] <... mmap resumed>) = 0x7fe6f87b1000 [pid 833] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 835 [pid 833] <... mprotect resumed>) = 0 [pid 834] <... write resumed>) = 262144 ./strace-static-x86_64: Process 835 attached [pid 834] munmap(0x7fe6f03b1000, 138412032 [pid 833] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 834] <... munmap resumed>) = 0 [pid 833] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 834] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 833] <... clone3 resumed> => {parent_tid=[836]}, 88) = 836 [pid 834] <... openat resumed>) = 4 [pid 833] rt_sigprocmask(SIG_SETMASK, [], [pid 834] ioctl(4, LOOP_SET_FD, 3 [pid 833] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 832] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 832] close(4) = 0 [pid 832] close(3) = 0 [pid 832] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 830] <... futex resumed>) = 0 [pid 832] chdir("./file0" [pid 830] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 832] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 830] <... futex resumed>) = 0 [pid 832] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 830] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 832] <... futex resumed>) = 0 [pid 830] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 832] creat("./bus", 000 [pid 830] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 832] <... creat resumed>) = 3 [pid 830] <... futex resumed>) = 0 [pid 832] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 830] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 832] <... futex resumed>) = 0 [pid 830] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 832] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 830] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 832] <... openat resumed>) = 4 [pid 830] <... futex resumed>) = 0 [pid 832] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 830] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 832] <... futex resumed>) = 0 [pid 830] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 832] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 830] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 830] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 835] set_robust_list(0x5555636e06a0, 24) = 0 [pid 835] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 835] setpgid(0, 0) = 0 [pid 835] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 833] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 834] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 833] <... futex resumed>) = 0 [pid 832] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 834] ioctl(4, LOOP_CLR_FD [pid 833] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 832] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 834] <... ioctl resumed>) = 0 [pid 832] <... futex resumed>) = 1 [pid 830] <... futex resumed>) = 0 [pid 832] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 830] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 832] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 830] <... futex resumed>) = 0 [pid 832] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 830] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 832] <... open resumed>) = 5 [pid 832] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 830] <... futex resumed>) = 0 [pid 832] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 830] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 832] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 830] <... futex resumed>) = 0 [pid 832] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 830] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 835] write(3, "1000", 4 [pid 832] <... mmap resumed>) = 0x20000000 [pid 835] <... write resumed>) = 4 [pid 832] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 835] close(3 [pid 832] <... futex resumed>) = 1 [pid 830] <... futex resumed>) = 0 [pid 835] <... close resumed>) = 0 [pid 832] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULLexecuting program [pid 830] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... restart_syscall resumed>) = 0 [pid 835] write(1, "executing program\n", 18 [pid 832] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 830] <... futex resumed>) = 0 [pid 835] <... write resumed>) = 18 [pid 832] memfd_create("syzkaller", 0 [pid 830] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 835] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 832] <... memfd_create resumed>) = 6 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 835] <... futex resumed>) = 0 [pid 832] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 305] <... openat resumed>) = 3 [pid 835] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 832] <... mmap resumed>) = 0x7fe6f03b1000 [pid 305] ioctl(3, LOOP_CLR_FD [pid 835] <... rt_sigaction resumed>NULL, 8) = 0 [pid 832] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 305] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 836 attached [pid 835] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 832] <... write resumed>) = 131072 [pid 305] close(3 [pid 836] set_robust_list(0x7fe6f87d19a0, 24 [pid 835] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 832] munmap(0x7fe6f03b1000, 138412032 [pid 305] <... close resumed>) = 0 [pid 836] <... set_robust_list resumed>) = 0 [pid 835] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 832] <... munmap resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 836] rt_sigprocmask(SIG_SETMASK, [], [pid 835] <... mmap resumed>) = 0x7fe6f87b1000 [pid 832] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 836] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 835] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 834] ioctl(4, LOOP_SET_FD, 3 [pid 832] <... openat resumed>) = 7 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 837 [pid 836] memfd_create("syzkaller", 0 [pid 835] <... mprotect resumed>) = 0 [pid 834] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 832] ioctl(7, LOOP_SET_FD, 6 [pid 836] <... memfd_create resumed>) = 3 [pid 835] rt_sigprocmask(SIG_BLOCK, ~[], [pid 834] close(4 [pid 832] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 836] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 835] <... rt_sigprocmask resumed>[], 8) = 0 [pid 834] <... close resumed>) = 0 [pid 832] ioctl(7, LOOP_CLR_FD [pid 836] <... mmap resumed>) = 0x7fe6f03b1000 [pid 835] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 834] close(3 [pid 832] <... ioctl resumed>) = 0 [pid 835] <... clone3 resumed> => {parent_tid=[838]}, 88) = 838 [pid 835] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 835] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 835] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 838 attached [pid 838] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 832] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 832] close(7) = 0 [pid 832] close(6 [pid 836] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 832] <... close resumed>) = 0 [pid 832] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 830] <... futex resumed>) = 0 [pid 832] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 830] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 834] <... close resumed>) = 0 [pid 832] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 830] <... futex resumed>) = 0 [pid 834] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 832] mknod(0x20000000, 000 [pid 830] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 834] <... futex resumed>) = 1 [pid 832] <... mknod resumed>) = -1 EEXIST (File exists) [pid 831] <... futex resumed>) = 0 [pid 834] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 832] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 831] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 836] <... write resumed>) = 262144 [pid 834] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 832] <... futex resumed>) = 1 [pid 831] <... futex resumed>) = 0 [pid 830] <... futex resumed>) = 0 [pid 836] munmap(0x7fe6f03b1000, 138412032 [pid 834] chdir("./file0" [pid 832] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 831] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 830] exit_group(0 [pid 836] <... munmap resumed>) = 0 [pid 834] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 832] <... futex resumed>) = ? [pid 830] <... exit_group resumed>) = ? [pid 836] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 834] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 832] +++ exited with 0 +++ [pid 830] +++ exited with 0 +++ [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=830, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 838] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 838] memfd_create("syzkaller", 0) = 3 [pid 838] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 834] <... futex resumed>) = 1 [pid 834] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 831] <... futex resumed>) = 0 [pid 831] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 834] <... futex resumed>) = 0 [pid 831] <... futex resumed>) = 1 [pid 834] creat("./bus", 000 [pid 831] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 834] <... creat resumed>) = 3 [pid 834] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 831] <... futex resumed>) = 0 [pid 834] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 831] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 834] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 831] <... futex resumed>) = 0 [pid 834] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 831] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 834] <... openat resumed>) = 4 [pid 834] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 831] <... futex resumed>) = 0 [pid 834] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 831] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 834] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 831] <... futex resumed>) = 0 [pid 834] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 831] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 838] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 837 attached [pid 836] <... openat resumed>) = 4 [pid 834] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 836] ioctl(4, LOOP_SET_FD, 3 [pid 834] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 837] set_robust_list(0x5555636e06a0, 24 [pid 836] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 834] <... futex resumed>) = 1 [pid 836] ioctl(4, LOOP_CLR_FD [pid 831] <... futex resumed>) = 0 [pid 837] <... set_robust_list resumed>) = 0 [pid 836] <... ioctl resumed>) = 0 [pid 834] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 831] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 834] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 831] <... futex resumed>) = 0 [pid 837] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 834] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 831] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 837] <... prctl resumed>) = 0 [pid 834] <... open resumed>) = 5 [pid 837] setpgid(0, 0 [pid 834] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 837] <... setpgid resumed>) = 0 [pid 834] <... futex resumed>) = 1 [pid 831] <... futex resumed>) = 0 [pid 834] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 831] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 834] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 831] <... futex resumed>) = 0 [pid 834] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 831] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 838] <... write resumed>) = 262144 [pid 837] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 834] <... mmap resumed>) = 0x20000000 [pid 836] ioctl(4, LOOP_SET_FD, 3 [pid 834] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 836] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 834] <... futex resumed>) = 1 [pid 836] close(4 [pid 831] <... futex resumed>) = 0 [pid 834] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 836] <... close resumed>) = 0 [pid 834] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 831] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 837] <... openat resumed>) = 3 [pid 836] close(3 [pid 834] memfd_create("syzkaller", 0 [pid 831] <... futex resumed>) = 0 [pid 838] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 836] <... close resumed>) = 0 [pid 831] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 836] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 834] <... memfd_create resumed>) = 6 [pid 837] write(3, "1000", 4 [pid 834] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 833] <... futex resumed>) = 0 [pid 836] <... futex resumed>) = 1 [pid 834] <... mmap resumed>) = 0x7fe6f03b1000 [pid 836] chdir("./file0" [pid 833] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 837] <... write resumed>) = 4 [pid 838] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 838] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 838] ioctl(4, LOOP_CLR_FD) = 0 [pid 837] close(3 [pid 836] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 834] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 833] <... futex resumed>) = 0 [pid 837] <... close resumed>) = 0 [pid 836] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 834] <... write resumed>) = 131072 [pid 833] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 837] write(1, "executing program\n", 18executing program [pid 836] <... futex resumed>) = 0 [pid 834] munmap(0x7fe6f03b1000, 138412032 [pid 833] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 837] <... write resumed>) = 18 [pid 836] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 834] <... munmap resumed>) = 0 [pid 833] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 837] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 836] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 834] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 833] <... futex resumed>) = 0 [pid 838] ioctl(4, LOOP_SET_FD, 3 [pid 837] <... futex resumed>) = 0 [pid 836] creat("./bus", 000 [pid 834] <... openat resumed>) = 7 [pid 833] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 838] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 837] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 836] <... creat resumed>) = 3 [pid 834] ioctl(7, LOOP_SET_FD, 6 [pid 837] <... rt_sigaction resumed>NULL, 8) = 0 [pid 836] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 834] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 837] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 836] <... futex resumed>) = 1 [pid 834] ioctl(7, LOOP_CLR_FD [pid 833] <... futex resumed>) = 0 [pid 837] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 836] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 834] <... ioctl resumed>) = 0 [pid 833] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... openat resumed>) = 3 [pid 838] close(4 [pid 837] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 836] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 833] <... futex resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 837] <... mmap resumed>) = 0x7fe6f87b1000 [pid 836] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 833] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... ioctl resumed>) = 0 [pid 838] <... close resumed>) = 0 [pid 837] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 836] <... openat resumed>) = 4 [pid 837] <... mprotect resumed>) = 0 [pid 836] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] close(3 [pid 838] close(3 [pid 837] rt_sigprocmask(SIG_BLOCK, ~[], [pid 836] <... futex resumed>) = 1 [pid 833] <... futex resumed>) = 0 [pid 837] <... rt_sigprocmask resumed>[], 8) = 0 [pid 836] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 833] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... close resumed>) = 0 [pid 837] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 836] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 833] <... futex resumed>) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 836] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 834] ioctl(7, LOOP_SET_FD, 6 [pid 833] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 837] <... clone3 resumed> => {parent_tid=[839]}, 88) = 839 [pid 836] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 834] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 837] rt_sigprocmask(SIG_SETMASK, [], [pid 836] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 834] close(7 [pid 837] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 836] <... futex resumed>) = 1 [pid 834] <... close resumed>) = 0 [pid 833] <... futex resumed>) = 0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 840 [pid 838] <... close resumed>) = 0 [pid 837] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 836] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 834] close(6 [pid 833] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 838] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 837] <... futex resumed>) = 0 [pid 836] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 834] <... close resumed>) = 0 [pid 833] <... futex resumed>) = 0 [pid 837] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 836] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 834] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 833] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 838] <... futex resumed>) = 1 [pid 836] <... open resumed>) = 5 [pid 835] <... futex resumed>) = 0 [pid 834] <... futex resumed>) = 1 [pid 831] <... futex resumed>) = 0 [pid 838] chdir("./file0" [pid 836] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 835] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 834] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 831] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 838] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 836] <... futex resumed>) = 1 [pid 835] <... futex resumed>) = 0 [pid 834] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 833] <... futex resumed>) = 0 [pid 831] <... futex resumed>) = 0 [pid 838] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 836] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 835] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 834] mknod(0x20000000, 000 [pid 833] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 831] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 838] <... futex resumed>) = 0 [pid 836] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 835] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 834] <... mknod resumed>) = -1 EEXIST (File exists) [pid 833] <... futex resumed>) = 0 [pid 838] creat("./bus", 000 [pid 836] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 835] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 834] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 833] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 838] <... creat resumed>) = 3 [pid 836] <... mmap resumed>) = 0x20000000 [pid 835] <... futex resumed>) = 0 [pid 834] <... futex resumed>) = 1 [pid 831] <... futex resumed>) = 0 [pid 838] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 836] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 835] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 834] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 831] exit_group(0./strace-static-x86_64: Process 840 attached [pid 838] <... futex resumed>) = 0 [pid 836] <... futex resumed>) = 1 [pid 835] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 834] <... futex resumed>) = ? [pid 833] <... futex resumed>) = 0 [pid 831] <... exit_group resumed>) = ? [pid 840] set_robust_list(0x5555636e06a0, 24 [pid 838] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 836] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 835] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 834] +++ exited with 0 +++ [pid 833] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 831] +++ exited with 0 +++ ./strace-static-x86_64: Process 839 attached [pid 840] <... set_robust_list resumed>) = 0 [pid 838] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 836] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 835] <... futex resumed>) = 0 [pid 833] <... futex resumed>) = 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=831, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 840] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 839] set_robust_list(0x7fe6f87d19a0, 24 [pid 838] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 836] memfd_create("syzkaller", 0 [pid 835] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 833] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 840] <... prctl resumed>) = 0 [pid 838] <... openat resumed>) = 4 [pid 836] <... memfd_create resumed>) = 6 [pid 303] <... restart_syscall resumed>) = 0 [pid 840] setpgid(0, 0 [pid 838] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 836] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 840] <... setpgid resumed>) = 0 [pid 839] <... set_robust_list resumed>) = 0 [pid 838] <... futex resumed>) = 1 [pid 836] <... mmap resumed>) = 0x7fe6f03b1000 [pid 835] <... futex resumed>) = 0 [pid 840] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 839] rt_sigprocmask(SIG_SETMASK, [], [pid 838] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 836] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 835] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 840] <... openat resumed>) = 3 [pid 839] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 838] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 836] <... write resumed>) = 131072 [pid 835] <... futex resumed>) = 0 [pid 840] write(3, "1000", 4 [pid 839] memfd_create("syzkaller", 0 [pid 838] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 836] munmap(0x7fe6f03b1000, 138412032 [pid 835] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... openat resumed>) = 3 [pid 840] <... write resumed>) = 4 [pid 839] <... memfd_create resumed>) = 3 [pid 838] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 836] <... munmap resumed>) = 0 [pid 303] ioctl(3, LOOP_CLR_FD [pid 839] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 838] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 839] <... mmap resumed>) = 0x7fe6f03b1000 [pid 838] <... futex resumed>) = 1 [pid 835] <... futex resumed>) = 0 [pid 839] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 838] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 835] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 840] close(3 [pid 839] <... write resumed>) = 262144 [pid 838] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 836] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 835] <... futex resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 839] munmap(0x7fe6f03b1000, 138412032 [pid 838] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 836] <... openat resumed>) = 7 [pid 835] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 840] <... close resumed>) = 0 [pid 839] <... munmap resumed>) = 0 [pid 838] <... open resumed>) = 5 [pid 836] ioctl(7, LOOP_SET_FD, 6 [pid 303] close(3 [pid 840] write(1, "executing program\n", 18 [pid 839] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 838] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 836] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 840] <... write resumed>) = 18 [pid 839] <... openat resumed>) = 4 [pid 838] <... futex resumed>) = 1 [pid 836] ioctl(7, LOOP_CLR_FD [pid 835] <... futex resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 840] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 839] ioctl(4, LOOP_SET_FD, 3 [pid 838] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 836] <... ioctl resumed>) = 0 [pid 835] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 840] <... futex resumed>) = 0 [pid 839] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 838] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 835] <... futex resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 840] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 839] ioctl(4, LOOP_CLR_FD [pid 838] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 835] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 840] <... rt_sigaction resumed>NULL, 8) = 0 [pid 839] <... ioctl resumed>) = 0 [pid 838] <... mmap resumed>) = 0x20000000 [pid 840] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 838] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 840] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 838] <... futex resumed>) = 1 [pid 835] <... futex resumed>) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 841 [pid 840] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 838] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 836] ioctl(7, LOOP_SET_FD, 6 [pid 835] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 840] <... mmap resumed>) = 0x7fe6f87b1000 [pid 838] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 836] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 835] <... futex resumed>) = 0 [pid 840] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 838] memfd_create("syzkaller", 0 [pid 836] close(7 [pid 835] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 839] ioctl(4, LOOP_SET_FD, 3 [pid 838] <... memfd_create resumed>) = 6 [pid 839] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 838] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 839] close(4 [pid 838] <... mmap resumed>) = 0x7fe6f03b1000 [pid 840] <... mprotect resumed>) = 0 [pid 839] <... close resumed>) = 0 [pid 838] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 836] <... close resumed>) = 0 [pid 839] close(3 [pid 838] <... write resumed>) = 131072 [pid 836] close(6 [pid 839] <... close resumed>) = 0 [pid 838] munmap(0x7fe6f03b1000, 138412032 [pid 839] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 838] <... munmap resumed>) = 0 [pid 836] <... close resumed>) = 0 [pid 839] <... futex resumed>) = 1 [pid 838] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 837] <... futex resumed>) = 0 [pid 836] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 840] rt_sigprocmask(SIG_BLOCK, ~[], [pid 839] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 838] <... openat resumed>) = 7 [pid 837] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 836] <... futex resumed>) = 1 [pid 833] <... futex resumed>) = 0 [pid 839] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 838] ioctl(7, LOOP_SET_FD, 6 [pid 839] chdir("./file0" [pid 838] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 837] <... futex resumed>) = 0 [pid 836] mknod(0x20000000, 000 [pid 833] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 839] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 838] ioctl(7, LOOP_CLR_FD [pid 840] <... rt_sigprocmask resumed>[], 8) = 0 [pid 839] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 838] <... ioctl resumed>) = 0 [pid 837] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 836] <... mknod resumed>) = -1 EEXIST (File exists) [pid 833] <... futex resumed>) = 0 [pid 840] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 839] <... futex resumed>) = 0 [pid 837] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 836] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 833] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 841 attached [pid 839] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 837] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 836] <... futex resumed>) = 0 [pid 833] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 841] set_robust_list(0x5555636e06a0, 24 [pid 840] <... clone3 resumed> => {parent_tid=[842]}, 88) = 842 [pid 839] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 837] <... futex resumed>) = 0 [pid 836] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 833] exit_group(0 [pid 841] <... set_robust_list resumed>) = 0 [pid 840] rt_sigprocmask(SIG_SETMASK, [], [pid 839] creat("./bus", 000 [pid 837] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 833] <... exit_group resumed>) = ? [pid 841] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 840] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 839] <... creat resumed>) = 3 [pid 836] <... futex resumed>) = ? [pid 841] <... prctl resumed>) = 0 [pid 840] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 839] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 838] ioctl(7, LOOP_SET_FD, 6 [pid 841] setpgid(0, 0 [pid 839] <... futex resumed>) = 1 [pid 838] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 837] <... futex resumed>) = 0 [pid 841] <... setpgid resumed>) = 0 [pid 839] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 838] close(7 [pid 837] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 836] +++ exited with 0 +++ [pid 833] +++ exited with 0 +++ [pid 841] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 840] <... futex resumed>) = 0 [pid 839] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 838] <... close resumed>) = 0 [pid 837] <... futex resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=833, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 841] <... openat resumed>) = 3 [pid 839] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 838] close(6 [pid 837] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 841] write(3, "1000", 4 [pid 839] <... openat resumed>) = 4 [pid 838] <... close resumed>) = 0 [pid 840] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 841] <... write resumed>) = 4 [pid 839] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 838] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 841] close(3 [pid 839] <... futex resumed>) = 1 [pid 838] <... futex resumed>) = 1 [pid 837] <... futex resumed>) = 0 [pid 835] <... futex resumed>) = 0 [pid 841] <... close resumed>) = 0 [pid 839] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 838] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 837] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 835] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 841] write(1, "executing program\n", 18 [pid 839] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 838] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 837] <... futex resumed>) = 0 [pid 835] <... futex resumed>) = 0 [pid 841] <... write resumed>) = 18 [pid 839] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 838] mknod(0x20000000, 000 [pid 837] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 835] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 841] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 838] <... mknod resumed>) = -1 EEXIST (File exists) [pid 841] <... futex resumed>) = 0 [pid 838] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 841] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 838] <... futex resumed>) = 1 [pid 835] <... futex resumed>) = 0 [pid 841] <... rt_sigaction resumed>NULL, 8) = 0 [pid 838] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 835] exit_group(0 [pid 841] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 838] <... futex resumed>) = ? [pid 835] <... exit_group resumed>) = ? [pid 841] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 838] +++ exited with 0 +++ [pid 835] +++ exited with 0 +++ [pid 841] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=835, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 841] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 841] <... mprotect resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 841] rt_sigprocmask(SIG_BLOCK, ~[], [pid 302] ioctl(3, LOOP_CLR_FD [pid 841] <... rt_sigprocmask resumed>[], 8) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 841] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 839] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 302] close(3 [pid 839] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... close resumed>) = 0 [pid 841] <... clone3 resumed> => {parent_tid=[843]}, 88) = 843 [pid 839] <... futex resumed>) = 1 [pid 837] <... futex resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 841] rt_sigprocmask(SIG_SETMASK, [], [pid 839] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 837] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 841] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 839] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 837] <... futex resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 844 [pid 841] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 839] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 837] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 841] <... futex resumed>) = 0 [pid 839] <... open resumed>) = 5 [pid 841] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 839] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 839] <... futex resumed>) = 1 [pid 837] <... futex resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 839] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 837] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] ioctl(3, LOOP_CLR_FD [pid 839] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 837] <... futex resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 839] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 837] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] close(3 [pid 839] <... mmap resumed>) = 0x20000000 [pid 306] <... close resumed>) = 0 [pid 839] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 839] <... futex resumed>) = 1 [pid 837] <... futex resumed>) = 0 [pid 839] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 837] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 845 [pid 839] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 837] <... futex resumed>) = 0 [pid 839] memfd_create("syzkaller", 0 [pid 837] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 839] <... memfd_create resumed>) = 6 [pid 839] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 839] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 839] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 839] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 7 [pid 839] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 839] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 844 attached [pid 844] set_robust_list(0x5555636e06a0, 24) = 0 [pid 844] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 844] setpgid(0, 0 [pid 839] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 839] close(7) = 0 [pid 839] close(6) = 0 [pid 839] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 837] <... futex resumed>) = 0 [pid 839] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 837] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 842 attached [pid 839] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 837] <... futex resumed>) = 0 [pid 839] mknod(0x20000000, 000 [pid 837] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 839] <... mknod resumed>) = -1 EEXIST (File exists) [pid 839] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 837] <... futex resumed>) = 0 [pid 844] <... setpgid resumed>) = 0 [pid 839] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 837] exit_group(0 [pid 844] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 839] <... futex resumed>) = ? [pid 837] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 843 attached [pid 844] <... openat resumed>) = 3 [pid 839] +++ exited with 0 +++ [pid 837] +++ exited with 0 +++ [pid 844] write(3, "1000", 4 [pid 843] set_robust_list(0x7fe6f87d19a0, 24 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=837, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 844] <... write resumed>) = 4 [pid 843] <... set_robust_list resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...>executing program [pid 844] close(3 [pid 843] rt_sigprocmask(SIG_SETMASK, [], [pid 844] <... close resumed>) = 0 [pid 843] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 844] write(1, "executing program\n", 18 [pid 843] memfd_create("syzkaller", 0 [pid 844] <... write resumed>) = 18 [pid 843] <... memfd_create resumed>) = 3 [pid 844] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 843] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 844] <... futex resumed>) = 0 [pid 843] <... mmap resumed>) = 0x7fe6f03b1000 [pid 844] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 843] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 844] <... rt_sigaction resumed>NULL, 8) = 0 [pid 844] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 844] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 844] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 844] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 844] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[846]}, 88) = 846 [pid 844] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 844] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 844] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 843] <... write resumed>) = 262144 [pid 843] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 843] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 842] set_robust_list(0x7fe6f87d19a0, 24./strace-static-x86_64: Process 845 attached ) = 0 [pid 842] rt_sigprocmask(SIG_SETMASK, [], [pid 843] <... openat resumed>) = 4 [pid 842] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 845] set_robust_list(0x5555636e06a0, 24) = 0 [pid 842] memfd_create("syzkaller", 0) = 3 [pid 845] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 842] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 845] <... prctl resumed>) = 0 [pid 842] <... mmap resumed>) = 0x7fe6f03b1000 [pid 843] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 843] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 846 attached [pid 846] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 846] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 846] memfd_create("syzkaller", 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 305] ioctl(3, LOOP_CLR_FD) = 0 [pid 305] close(3 [pid 845] setpgid(0, 0 [pid 842] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 305] <... close resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 847 [pid 843] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 843] close(4) = 0 [pid 843] close(3) = 0 [pid 843] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 841] <... futex resumed>) = 0 [pid 841] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 841] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 843] <... futex resumed>) = 1 [pid 843] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 843] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 841] <... futex resumed>) = 0 [pid 841] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 841] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 843] <... futex resumed>) = 1 [pid 843] creat("./bus", 000 [pid 845] <... setpgid resumed>) = 0 [pid 842] <... write resumed>) = 262144 [pid 845] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 843] <... creat resumed>) = 3 [pid 842] munmap(0x7fe6f03b1000, 138412032 [pid 843] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 841] <... futex resumed>) = 0 [pid 843] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 841] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 843] <... openat resumed>) = 4 [pid 841] <... futex resumed>) = 0 [pid 843] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 841] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 843] <... futex resumed>) = 0 [pid 841] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 843] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 841] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 841] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 846] <... memfd_create resumed>) = 3 [pid 846] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 846] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 845] <... openat resumed>) = 3 [pid 842] <... munmap resumed>) = 0 executing program [pid 842] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 845] write(3, "1000", 4 [pid 843] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 842] <... openat resumed>) = 4 [pid 845] <... write resumed>) = 4 [pid 842] ioctl(4, LOOP_SET_FD, 3 [pid 845] close(3 [pid 842] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 845] <... close resumed>) = 0 [pid 842] ioctl(4, LOOP_CLR_FD [pid 845] write(1, "executing program\n", 18 [pid 842] <... ioctl resumed>) = 0 [pid 845] <... write resumed>) = 18 [pid 845] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 843] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 845] <... futex resumed>) = 0 [pid 845] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 845] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 843] <... futex resumed>) = 1 [pid 841] <... futex resumed>) = 0 [pid 845] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 843] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 841] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 845] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 843] <... open resumed>) = 5 [pid 841] <... futex resumed>) = 0 [pid 845] <... mmap resumed>) = 0x7fe6f87b1000 [pid 843] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 841] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 845] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 843] <... futex resumed>) = 0 [pid 841] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 845] <... mprotect resumed>) = 0 [pid 843] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 842] ioctl(4, LOOP_SET_FD, 3 [pid 841] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 845] rt_sigprocmask(SIG_BLOCK, ~[], [pid 843] <... mmap resumed>) = 0x20000000 [pid 842] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 841] <... futex resumed>) = 0 [pid 845] <... rt_sigprocmask resumed>[], 8) = 0 [pid 843] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 842] close(4 [pid 841] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 845] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 843] <... futex resumed>) = 0 [pid 842] <... close resumed>) = 0 [pid 841] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 843] memfd_create("syzkaller", 0 [pid 842] close(3 [pid 841] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 845] <... clone3 resumed> => {parent_tid=[848]}, 88) = 848 [pid 843] <... memfd_create resumed>) = 6 [pid 841] <... futex resumed>) = 0 [pid 843] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 841] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 843] <... mmap resumed>) = 0x7fe6f03b1000 [pid 842] <... close resumed>) = 0 [pid 845] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 843] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 842] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 843] <... write resumed>) = 131072 ./strace-static-x86_64: Process 847 attached [pid 843] munmap(0x7fe6f03b1000, 138412032 [pid 847] set_robust_list(0x5555636e06a0, 24 [pid 846] <... write resumed>) = 262144 [pid 843] <... munmap resumed>) = 0 [pid 847] <... set_robust_list resumed>) = 0 [pid 843] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 847] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 843] <... openat resumed>) = 7 [pid 847] <... prctl resumed>) = 0 [pid 846] munmap(0x7fe6f03b1000, 138412032 [pid 843] ioctl(7, LOOP_SET_FD, 6 [pid 847] setpgid(0, 0 [pid 846] <... munmap resumed>) = 0 [pid 845] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 843] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 842] <... futex resumed>) = 1 [pid 840] <... futex resumed>) = 0 [pid 847] <... setpgid resumed>) = 0 [pid 846] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 845] <... futex resumed>) = 0 [pid 843] ioctl(7, LOOP_CLR_FD [pid 842] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 840] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 847] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 846] <... openat resumed>) = 4 [pid 845] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 843] <... ioctl resumed>) = 0 [pid 842] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 840] <... futex resumed>) = 0 [pid 847] <... openat resumed>) = 3 [pid 846] ioctl(4, LOOP_SET_FD, 3 [pid 842] chdir("./file0" [pid 840] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 847] write(3, "1000", 4 [pid 846] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 842] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 847] <... write resumed>) = 4 [pid 846] ioctl(4, LOOP_CLR_FD [pid 847] close(3 [pid 846] <... ioctl resumed>) = 0 [pid 842] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 847] <... close resumed>) = 0 [pid 842] <... futex resumed>) = 1 [pid 840] <... futex resumed>) = 0 [pid 842] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 840] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 842] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 840] <... futex resumed>) = 0 [pid 842] creat("./bus", 000 [pid 840] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}executing program [pid 847] write(1, "executing program\n", 18 [pid 842] <... creat resumed>) = 3 [pid 847] <... write resumed>) = 18 [pid 843] ioctl(7, LOOP_SET_FD, 6 [pid 842] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 847] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 843] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 847] <... futex resumed>) = 0 [pid 843] close(7 [pid 842] <... futex resumed>) = 1 [pid 840] <... futex resumed>) = 0 [pid 847] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 843] <... close resumed>) = 0 [pid 842] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 840] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 847] <... rt_sigaction resumed>NULL, 8) = 0 [pid 843] close(6 [pid 847] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 846] ioctl(4, LOOP_SET_FD, 3 [pid 843] <... close resumed>) = 0 [pid 847] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 846] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 843] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 847] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 846] close(4 [pid 843] <... futex resumed>) = 1 [pid 841] <... futex resumed>) = 0 [pid 847] <... mmap resumed>) = 0x7fe6f87b1000 [pid 846] <... close resumed>) = 0 [pid 843] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 841] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 847] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 846] close(3 [pid 843] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 841] <... futex resumed>) = 0 [pid 847] <... mprotect resumed>) = 0 [pid 846] <... close resumed>) = 0 [pid 843] mknod(0x20000000, 000 [pid 841] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 847] rt_sigprocmask(SIG_BLOCK, ~[], [pid 846] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 843] <... mknod resumed>) = -1 EEXIST (File exists) [pid 847] <... rt_sigprocmask resumed>[], 8) = 0 [pid 846] <... futex resumed>) = 1 [pid 844] <... futex resumed>) = 0 [pid 843] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 847] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 846] chdir("./file0" [pid 844] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 843] <... futex resumed>) = 1 [pid 841] <... futex resumed>) = 0 [pid 846] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 844] <... futex resumed>) = 0 [pid 843] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 842] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 841] exit_group(0 [pid 840] <... futex resumed>) = 0 ./strace-static-x86_64: Process 848 attached [pid 847] <... clone3 resumed> => {parent_tid=[849]}, 88) = 849 [pid 846] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 844] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 843] <... futex resumed>) = ? [pid 842] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 841] <... exit_group resumed>) = ? [pid 848] set_robust_list(0x7fe6f87d19a0, 24 [pid 847] rt_sigprocmask(SIG_SETMASK, [], [pid 846] <... futex resumed>) = 0 [pid 844] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 843] +++ exited with 0 +++ [pid 842] <... openat resumed>) = 4 [pid 841] +++ exited with 0 +++ [pid 840] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 848] <... set_robust_list resumed>) = 0 [pid 847] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 846] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 844] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 842] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 840] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 848] rt_sigprocmask(SIG_SETMASK, [], [pid 847] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 846] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 844] <... futex resumed>) = 0 [pid 842] <... futex resumed>) = 0 [pid 840] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 848] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 847] <... futex resumed>) = 0 [pid 846] creat("./bus", 000 [pid 844] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 842] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 840] <... futex resumed>) = 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=841, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 848] memfd_create("syzkaller", 0 [pid 847] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 846] <... creat resumed>) = 3 [pid 842] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 840] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 848] <... memfd_create resumed>) = 3 [pid 846] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 842] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 840] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 303] <... openat resumed>) = 3 [pid 848] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 846] <... futex resumed>) = 1 [pid 844] <... futex resumed>) = 0 [pid 842] <... futex resumed>) = 0 [pid 840] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] ioctl(3, LOOP_CLR_FD [pid 848] <... mmap resumed>) = 0x7fe6f03b1000 [pid 846] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 844] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 842] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 840] <... futex resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 846] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 844] <... futex resumed>) = 0 [pid 842] <... open resumed>) = 5 [pid 840] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] close(3 [pid 846] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 844] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 842] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 840] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 846] <... openat resumed>) = 4 [pid 842] <... futex resumed>) = 0 [pid 840] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... close resumed>) = 0 [pid 846] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 842] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 840] <... futex resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 846] <... futex resumed>) = 1 [pid 844] <... futex resumed>) = 0 [pid 846] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 844] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 846] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 844] <... futex resumed>) = 0 [pid 842] <... mmap resumed>) = 0x20000000 [pid 840] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 846] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 844] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 849 attached [pid 846] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 842] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 849] set_robust_list(0x7fe6f87d19a0, 24 [pid 848] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 846] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 842] <... futex resumed>) = 1 [pid 840] <... futex resumed>) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 850 [pid 849] <... set_robust_list resumed>) = 0 [pid 846] <... futex resumed>) = 1 [pid 844] <... futex resumed>) = 0 [pid 842] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 840] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 849] rt_sigprocmask(SIG_SETMASK, [], [pid 846] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 844] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 842] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 840] <... futex resumed>) = 0 [pid 849] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 846] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 844] <... futex resumed>) = 0 [pid 849] memfd_create("syzkaller", 0 [pid 846] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 844] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 842] memfd_create("syzkaller", 0 [pid 840] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 849] <... memfd_create resumed>) = 3 [pid 848] <... write resumed>) = 262144 [pid 846] <... open resumed>) = 5 [pid 842] <... memfd_create resumed>) = 6 [pid 849] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 846] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 849] <... mmap resumed>) = 0x7fe6f03b1000 [pid 846] <... futex resumed>) = 1 [pid 844] <... futex resumed>) = 0 [pid 849] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 846] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 844] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 846] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 844] <... futex resumed>) = 0 [pid 846] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 844] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 846] <... mmap resumed>) = 0x20000000 [pid 846] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 844] <... futex resumed>) = 0 [pid 846] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 844] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 846] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 844] <... futex resumed>) = 0 [pid 846] memfd_create("syzkaller", 0 [pid 844] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 846] <... memfd_create resumed>) = 6 [pid 846] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 848] munmap(0x7fe6f03b1000, 138412032 [pid 846] <... mmap resumed>) = 0x7fe6f03b1000 [pid 842] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 846] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 848] <... munmap resumed>) = 0 [pid 846] <... write resumed>) = 131072 [pid 842] <... mmap resumed>) = 0x7fe6f03b1000 [pid 846] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 846] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 846] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 846] ioctl(7, LOOP_CLR_FD) = 0 [pid 848] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 842] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 849] <... write resumed>) = 262144 [pid 849] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 848] <... openat resumed>) = 4 [pid 842] <... write resumed>) = 131072 [pid 849] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 848] ioctl(4, LOOP_SET_FD, 3 [pid 842] munmap(0x7fe6f03b1000, 138412032 [pid 849] <... openat resumed>) = 4 [pid 848] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 842] <... munmap resumed>) = 0 [pid 849] ioctl(4, LOOP_SET_FD, 3 [pid 848] ioctl(4, LOOP_CLR_FD [pid 842] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 849] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 848] <... ioctl resumed>) = 0 [pid 842] <... openat resumed>) = 7 [pid 849] ioctl(4, LOOP_CLR_FD [pid 846] ioctl(7, LOOP_SET_FD, 6 [pid 842] ioctl(7, LOOP_SET_FD, 6 [pid 849] <... ioctl resumed>) = 0 [pid 846] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 842] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 846] close(7 [pid 842] ioctl(7, LOOP_CLR_FD [pid 846] <... close resumed>) = 0 [pid 846] close(6) = 0 [pid 842] <... ioctl resumed>) = 0 [pid 846] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 844] <... futex resumed>) = 0 [pid 846] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 844] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 846] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 844] <... futex resumed>) = 0 [pid 849] ioctl(4, LOOP_SET_FD, 3 [pid 846] mknod(0x20000000, 000 [pid 844] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 849] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 846] <... mknod resumed>) = -1 EEXIST (File exists) [pid 849] close(4 [pid 846] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 849] <... close resumed>) = 0 [pid 846] <... futex resumed>) = 1 [pid 844] <... futex resumed>) = 0 [pid 849] close(3 [pid 846] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 844] exit_group(0 [pid 849] <... close resumed>) = 0 [pid 846] <... futex resumed>) = ? [pid 844] <... exit_group resumed>) = ? [pid 849] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 846] +++ exited with 0 +++ [pid 844] +++ exited with 0 +++ [pid 849] <... futex resumed>) = 1 [pid 847] <... futex resumed>) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=844, si_uid=0, si_status=0, si_utime=1, si_stime=0} --- [pid 849] chdir("./file0" [pid 847] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 849] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 847] <... futex resumed>) = 0 [pid 849] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 847] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 849] <... futex resumed>) = 0 [pid 847] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 849] creat("./bus", 000 [pid 847] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 849] <... creat resumed>) = 3 [pid 847] <... futex resumed>) = 0 [pid 849] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 848] ioctl(4, LOOP_SET_FD, 3 [pid 847] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 849] <... futex resumed>) = 0 [pid 848] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 847] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 849] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 848] close(4 [pid 847] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 849] <... openat resumed>) = 4 [pid 848] <... close resumed>) = 0 [pid 847] <... futex resumed>) = 0 [pid 849] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 848] close(3 [pid 847] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 849] <... futex resumed>) = 0 [pid 847] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 842] ioctl(7, LOOP_SET_FD, 6 [pid 849] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 847] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 849] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 847] <... futex resumed>) = 0 [pid 842] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 849] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 847] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 849] <... futex resumed>) = 0 [pid 847] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 842] close(7 [pid 849] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 848] <... close resumed>) = 0 [pid 847] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 849] <... open resumed>) = 5 [pid 848] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 847] <... futex resumed>) = 0 [pid 842] <... close resumed>) = 0 [pid 849] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 848] <... futex resumed>) = 1 [pid 847] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 845] <... futex resumed>) = 0 [pid 842] close(6./strace-static-x86_64: Process 850 attached [pid 849] <... futex resumed>) = 0 [pid 848] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 847] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 845] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... restart_syscall resumed>) = 0 [pid 850] set_robust_list(0x5555636e06a0, 24 [pid 849] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 848] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 847] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 845] <... futex resumed>) = 0 [pid 842] <... close resumed>) = 0 [pid 850] <... set_robust_list resumed>) = 0 [pid 849] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 848] chdir("./file0" [pid 847] <... futex resumed>) = 0 [pid 845] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 842] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 850] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 849] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 848] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 847] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 842] <... futex resumed>) = 1 [pid 840] <... futex resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 850] <... prctl resumed>) = 0 [pid 849] <... mmap resumed>) = 0x20000000 [pid 848] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 842] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 840] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... openat resumed>) = 3 [pid 849] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 848] <... futex resumed>) = 1 [pid 845] <... futex resumed>) = 0 [pid 842] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 840] <... futex resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 849] <... futex resumed>) = 1 [pid 848] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 847] <... futex resumed>) = 0 [pid 845] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 842] mknod(0x20000000, 000 [pid 840] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] <... ioctl resumed>) = 0 [pid 850] setpgid(0, 0 [pid 849] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 848] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 847] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 845] <... futex resumed>) = 0 [pid 842] <... mknod resumed>) = -1 EEXIST (File exists) [pid 302] close(3 [pid 850] <... setpgid resumed>) = 0 [pid 849] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 848] creat("./bus", 000 [pid 847] <... futex resumed>) = 0 [pid 845] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 842] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... close resumed>) = 0 [pid 849] memfd_create("syzkaller", 0 [pid 848] <... creat resumed>) = 3 [pid 847] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 850] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 842] <... futex resumed>) = 1 [pid 840] <... futex resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 850] <... openat resumed>) = 3 [pid 849] <... memfd_create resumed>) = 6 [pid 848] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 842] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 840] exit_group(0 [pid 850] write(3, "1000", 4 [pid 849] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 848] <... futex resumed>) = 1 [pid 845] <... futex resumed>) = 0 [pid 842] <... futex resumed>) = ? [pid 840] <... exit_group resumed>) = ? [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 851 [pid 849] <... mmap resumed>) = 0x7fe6f03b1000 [pid 848] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 845] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 842] +++ exited with 0 +++ [pid 850] <... write resumed>) = 4 [pid 849] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 848] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 845] <... futex resumed>) = 0 [pid 840] +++ exited with 0 +++ [pid 850] close(3 [pid 849] <... write resumed>) = 131072 [pid 848] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 845] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=840, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 850] <... close resumed>) = 0 [pid 849] munmap(0x7fe6f03b1000, 138412032executing program [pid 850] write(1, "executing program\n", 18 [pid 849] <... munmap resumed>) = 0 [pid 848] <... openat resumed>) = 4 [pid 850] <... write resumed>) = 18 [pid 849] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 848] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 850] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 849] <... openat resumed>) = 7 [pid 848] <... futex resumed>) = 1 [pid 845] <... futex resumed>) = 0 [pid 304] <... openat resumed>) = 3 [pid 850] <... futex resumed>) = 0 [pid 849] ioctl(7, LOOP_SET_FD, 6 [pid 848] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 845] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] ioctl(3, LOOP_CLR_FD [pid 850] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 849] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 848] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 845] <... futex resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 850] <... rt_sigaction resumed>NULL, 8) = 0 [pid 849] ioctl(7, LOOP_CLR_FD [pid 848] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 845] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] close(3 [pid 850] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 849] <... ioctl resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 850] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 848] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 850] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 848] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 850] <... mmap resumed>) = 0x7fe6f87b1000 [pid 848] <... futex resumed>) = 1 [pid 845] <... futex resumed>) = 0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 852 [pid 850] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 848] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 845] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 850] <... mprotect resumed>) = 0 [pid 848] <... open resumed>) = 5 [pid 845] <... futex resumed>) = 0 [pid 850] rt_sigprocmask(SIG_BLOCK, ~[], [pid 849] ioctl(7, LOOP_SET_FD, 6 [pid 848] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 850] <... rt_sigprocmask resumed>[], 8) = 0 [pid 849] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 848] <... futex resumed>) = 0 [pid 845] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 850] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 849] close(7 [pid 848] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 845] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 849] <... close resumed>) = 0 [pid 845] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 850] <... clone3 resumed> => {parent_tid=[853]}, 88) = 853 [pid 849] close(6 [pid 848] <... futex resumed>) = 0 [pid 845] <... futex resumed>) = 1 [pid 850] rt_sigprocmask(SIG_SETMASK, [], [pid 849] <... close resumed>) = 0 [pid 848] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 845] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 850] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 849] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 851 attached [pid 850] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 849] <... futex resumed>) = 1 [pid 848] <... mmap resumed>) = 0x20000000 [pid 847] <... futex resumed>) = 0 [pid 851] set_robust_list(0x5555636e06a0, 24 [pid 850] <... futex resumed>) = 0 [pid 849] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 848] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 847] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 852 attached [pid 851] <... set_robust_list resumed>) = 0 [pid 850] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 849] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 848] <... futex resumed>) = 1 [pid 847] <... futex resumed>) = 0 [pid 845] <... futex resumed>) = 0 [pid 852] set_robust_list(0x5555636e06a0, 24 [pid 851] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 849] mknod(0x20000000, 000 [pid 848] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 847] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 852] <... set_robust_list resumed>) = 0 [pid 851] <... prctl resumed>) = 0 [pid 849] <... mknod resumed>) = -1 EEXIST (File exists) [pid 848] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 845] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 851] setpgid(0, 0 [pid 849] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 852] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 851] <... setpgid resumed>) = 0 [pid 849] <... futex resumed>) = 1 [pid 848] memfd_create("syzkaller", 0 [pid 847] <... futex resumed>) = 0 [pid 845] <... futex resumed>) = 0 [pid 852] <... prctl resumed>) = 0 [pid 851] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 849] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 848] <... memfd_create resumed>) = 6 [pid 847] exit_group(0 [pid 845] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 852] setpgid(0, 0 [pid 851] <... openat resumed>) = 3 [pid 849] <... futex resumed>) = ? [pid 848] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 847] <... exit_group resumed>) = ? [pid 852] <... setpgid resumed>) = 0 [pid 851] write(3, "1000", 4 [pid 849] +++ exited with 0 +++ [pid 848] <... mmap resumed>) = 0x7fe6f03b1000 [pid 847] +++ exited with 0 +++ [pid 851] <... write resumed>) = 4 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=847, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- executing program [pid 851] close(3 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 851] <... close resumed>) = 0 [pid 851] write(1, "executing program\n", 18) = 18 [pid 851] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 851] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 851] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 851] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 851] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 848] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 852] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 851] <... mprotect resumed>) = 0 [pid 851] rt_sigprocmask(SIG_BLOCK, ~[], [pid 848] <... write resumed>) = 131072 [pid 848] munmap(0x7fe6f03b1000, 138412032 [pid 851] <... rt_sigprocmask resumed>[], 8) = 0 [pid 848] <... munmap resumed>) = 0 [pid 852] <... openat resumed>) = 3 [pid 848] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 852] write(3, "1000", 4 [pid 851] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 848] <... openat resumed>) = 7 [pid 852] <... write resumed>) = 4 [pid 848] ioctl(7, LOOP_SET_FD, 6 [pid 851] <... clone3 resumed> => {parent_tid=[854]}, 88) = 854 ./strace-static-x86_64: Process 853 attached [pid 851] rt_sigprocmask(SIG_SETMASK, [], [pid 853] set_robust_list(0x7fe6f87d19a0, 24 [pid 851] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 853] <... set_robust_list resumed>) = 0 [pid 851] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 853] rt_sigprocmask(SIG_SETMASK, [], [pid 851] <... futex resumed>) = 0 [pid 853] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 851] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 853] memfd_create("syzkaller", 0) = 3 [pid 853] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 853] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 305] <... restart_syscall resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 305] ioctl(3, LOOP_CLR_FD [pid 852] close(3 [pid 848] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] <... ioctl resumed>) = 0 [pid 852] <... close resumed>) = 0 [pid 848] ioctl(7, LOOP_CLR_FD [pid 305] close(3executing program [pid 852] write(1, "executing program\n", 18 [pid 848] <... ioctl resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 852] <... write resumed>) = 18 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 852] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 855 [pid 852] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 852] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 852] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 852] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 848] ioctl(7, LOOP_SET_FD, 6 [pid 852] <... mprotect resumed>) = 0 [pid 848] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 848] close(7 [pid 852] rt_sigprocmask(SIG_BLOCK, ~[], [pid 853] <... write resumed>) = 262144 [pid 852] <... rt_sigprocmask resumed>[], 8) = 0 [pid 848] <... close resumed>) = 0 [pid 848] close(6 [pid 853] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 853] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 853] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 853] ioctl(4, LOOP_CLR_FD) = 0 [pid 848] <... close resumed>) = 0 [pid 852] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 848] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 852] <... clone3 resumed> => {parent_tid=[856]}, 88) = 856 [pid 848] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 845] <... futex resumed>) = 0 [pid 852] rt_sigprocmask(SIG_SETMASK, [], [pid 845] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 852] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 848] <... futex resumed>) = 0 [pid 852] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 845] <... futex resumed>) = 1 [pid 852] <... futex resumed>) = 0 [pid 848] mknod(0x20000000, 000 [pid 845] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 852] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 848] <... mknod resumed>) = -1 EEXIST (File exists) ./strace-static-x86_64: Process 854 attached [pid 848] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 854] set_robust_list(0x7fe6f87d19a0, 24 [pid 848] <... futex resumed>) = 1 [pid 845] <... futex resumed>) = 0 [pid 854] <... set_robust_list resumed>) = 0 [pid 848] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 845] exit_group(0 [pid 854] rt_sigprocmask(SIG_SETMASK, [], [pid 848] <... futex resumed>) = ? [pid 845] <... exit_group resumed>) = ? [pid 848] +++ exited with 0 +++ ./strace-static-x86_64: Process 855 attached [pid 855] set_robust_list(0x5555636e06a0, 24) = 0 [pid 855] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 854] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 845] +++ exited with 0 +++ [pid 853] ioctl(4, LOOP_SET_FD, 3 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=845, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 853] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 854] memfd_create("syzkaller", 0 [pid 853] close(4 [pid 854] <... memfd_create resumed>) = 3 [pid 853] <... close resumed>) = 0 [pid 853] close(3) = 0 [pid 853] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 854] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 853] <... futex resumed>) = 1 [pid 850] <... futex resumed>) = 0 [pid 853] chdir("./file0" [pid 850] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 854] <... mmap resumed>) = 0x7fe6f03b1000 [pid 855] <... prctl resumed>) = 0 [pid 853] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 850] <... futex resumed>) = 0 [pid 855] setpgid(0, 0 [pid 853] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 850] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 855] <... setpgid resumed>) = 0 [pid 853] <... futex resumed>) = 0 [pid 850] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 855] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 853] creat("./bus", 000 [pid 850] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 855] <... openat resumed>) = 3 [pid 853] <... creat resumed>) = 3 [pid 850] <... futex resumed>) = 0 [pid 855] write(3, "1000", 4 [pid 853] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 850] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 855] <... write resumed>) = 4 [pid 853] <... futex resumed>) = 0 [pid 850] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 855] close(3 [pid 853] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 850] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 855] <... close resumed>) = 0 [pid 854] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 853] <... openat resumed>) = 4 [pid 850] <... futex resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 executing program [pid 855] write(1, "executing program\n", 18 [pid 853] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 850] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 855] <... write resumed>) = 18 [pid 853] <... futex resumed>) = 0 [pid 850] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 855] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 853] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 850] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 855] <... futex resumed>) = 0 [pid 853] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 850] <... futex resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 855] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 853] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 850] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] ioctl(3, LOOP_CLR_FD [pid 855] <... rt_sigaction resumed>NULL, 8) = 0 [pid 854] <... write resumed>) = 262144 [pid 853] <... futex resumed>) = 0 [pid 850] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 306] <... ioctl resumed>) = 0 [pid 855] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 854] munmap(0x7fe6f03b1000, 138412032 [pid 853] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 850] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] close(3 [pid 855] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 854] <... munmap resumed>) = 0 [pid 853] <... open resumed>) = 5 [pid 850] <... futex resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 855] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 854] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 853] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 850] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 856 attached [pid 855] <... mmap resumed>) = 0x7fe6f87b1000 [pid 854] <... openat resumed>) = 4 [pid 853] <... futex resumed>) = 0 [pid 850] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 856] set_robust_list(0x7fe6f87d19a0, 24 [pid 855] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 854] ioctl(4, LOOP_SET_FD, 3 [pid 853] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 850] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 857 [pid 856] <... set_robust_list resumed>) = 0 [pid 855] <... mprotect resumed>) = 0 [pid 854] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 853] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 850] <... futex resumed>) = 0 [pid 856] rt_sigprocmask(SIG_SETMASK, [], [pid 855] rt_sigprocmask(SIG_BLOCK, ~[], [pid 854] ioctl(4, LOOP_CLR_FD [pid 853] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 850] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 856] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 855] <... rt_sigprocmask resumed>[], 8) = 0 [pid 853] <... mmap resumed>) = 0x20000000 [pid 856] memfd_create("syzkaller", 0 [pid 855] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 853] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 856] <... memfd_create resumed>) = 3 [pid 853] <... futex resumed>) = 0 [pid 856] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 855] <... clone3 resumed> => {parent_tid=[858]}, 88) = 858 [pid 853] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 856] <... mmap resumed>) = 0x7fe6f03b1000 [pid 855] rt_sigprocmask(SIG_SETMASK, [], [pid 856] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 855] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 855] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 854] <... ioctl resumed>) = 0 [pid 850] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 855] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 850] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 853] <... futex resumed>) = 0 [pid 850] <... futex resumed>) = 1 [pid 853] memfd_create("syzkaller", 0 [pid 850] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 856] <... write resumed>) = 262144 [pid 853] <... memfd_create resumed>) = 6 [pid 854] ioctl(4, LOOP_SET_FD, 3 [pid 853] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 854] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 853] <... mmap resumed>) = 0x7fe6f03b1000 [pid 854] close(4 [pid 853] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072./strace-static-x86_64: Process 857 attached [pid 854] <... close resumed>) = 0 [pid 853] <... write resumed>) = 131072 [pid 857] set_robust_list(0x5555636e06a0, 24 [pid 854] close(3 [pid 853] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 853] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 7 [pid 853] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 856] munmap(0x7fe6f03b1000, 138412032 [pid 853] ioctl(7, LOOP_CLR_FD [pid 857] <... set_robust_list resumed>) = 0 [pid 856] <... munmap resumed>) = 0 [pid 854] <... close resumed>) = 0 [pid 853] <... ioctl resumed>) = 0 [pid 857] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 856] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 854] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 857] <... prctl resumed>) = 0 [pid 856] <... openat resumed>) = 4 [pid 854] <... futex resumed>) = 1 [pid 851] <... futex resumed>) = 0 [pid 857] setpgid(0, 0 [pid 856] ioctl(4, LOOP_SET_FD, 3 [pid 854] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 851] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 857] <... setpgid resumed>) = 0 [pid 856] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 854] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 851] <... futex resumed>) = 0 [pid 857] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 856] ioctl(4, LOOP_CLR_FD [pid 854] chdir("./file0" [pid 851] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 857] <... openat resumed>) = 3 [pid 856] <... ioctl resumed>) = 0 [pid 854] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 857] write(3, "1000", 4 [pid 854] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 857] <... write resumed>) = 4 [pid 854] <... futex resumed>) = 1 [pid 853] ioctl(7, LOOP_SET_FD, 6 [pid 851] <... futex resumed>) = 0 ./strace-static-x86_64: Process 858 attached [pid 857] close(3 [pid 854] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 853] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 851] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 858] set_robust_list(0x7fe6f87d19a0, 24 [pid 857] <... close resumed>) = 0 [pid 854] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 853] close(7executing program [pid 851] <... futex resumed>) = 0 [pid 858] <... set_robust_list resumed>) = 0 [pid 857] write(1, "executing program\n", 18 [pid 854] creat("./bus", 000 [pid 853] <... close resumed>) = 0 [pid 851] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 858] rt_sigprocmask(SIG_SETMASK, [], [pid 857] <... write resumed>) = 18 [pid 856] ioctl(4, LOOP_SET_FD, 3 [pid 854] <... creat resumed>) = 3 [pid 853] close(6 [pid 858] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 857] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 856] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 854] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 853] <... close resumed>) = 0 [pid 858] memfd_create("syzkaller", 0 [pid 857] <... futex resumed>) = 0 [pid 856] close(4 [pid 854] <... futex resumed>) = 1 [pid 853] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 851] <... futex resumed>) = 0 [pid 858] <... memfd_create resumed>) = 3 [pid 856] <... close resumed>) = 0 [pid 853] <... futex resumed>) = 1 [pid 851] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 858] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 856] close(3 [pid 853] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 851] <... futex resumed>) = 0 [pid 858] <... mmap resumed>) = 0x7fe6f03b1000 [pid 856] <... close resumed>) = 0 [pid 851] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 858] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 856] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 854] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 852] <... futex resumed>) = 0 [pid 850] <... futex resumed>) = 0 [pid 856] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 854] <... openat resumed>) = 4 [pid 857] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 852] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 854] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 850] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 857] <... rt_sigaction resumed>NULL, 8) = 0 [pid 856] <... futex resumed>) = 0 [pid 854] <... futex resumed>) = 1 [pid 853] <... futex resumed>) = 0 [pid 852] <... futex resumed>) = 1 [pid 851] <... futex resumed>) = 0 [pid 850] <... futex resumed>) = 1 [pid 858] <... write resumed>) = 262144 [pid 857] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 856] chdir("./file0" [pid 854] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 853] mknod(0x20000000, 000 [pid 852] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 851] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 850] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 857] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 856] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 854] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 853] <... mknod resumed>) = -1 EEXIST (File exists) [pid 851] <... futex resumed>) = 0 [pid 857] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 856] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 854] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 853] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 851] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 858] munmap(0x7fe6f03b1000, 138412032 [pid 857] <... mmap resumed>) = 0x7fe6f87b1000 [pid 856] <... futex resumed>) = 1 [pid 854] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 853] <... futex resumed>) = 1 [pid 852] <... futex resumed>) = 0 [pid 850] <... futex resumed>) = 0 [pid 858] <... munmap resumed>) = 0 [pid 857] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 856] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 854] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 853] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 852] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 850] exit_group(0 [pid 858] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 857] <... mprotect resumed>) = 0 [pid 856] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 854] <... futex resumed>) = 1 [pid 853] <... futex resumed>) = ? [pid 852] <... futex resumed>) = 0 [pid 851] <... futex resumed>) = 0 [pid 850] <... exit_group resumed>) = ? [pid 858] <... openat resumed>) = 4 [pid 857] rt_sigprocmask(SIG_BLOCK, ~[], [pid 856] creat("./bus", 000 [pid 854] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 853] +++ exited with 0 +++ [pid 851] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 858] ioctl(4, LOOP_SET_FD, 3 [pid 856] <... creat resumed>) = 3 [pid 852] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 851] <... futex resumed>) = 0 [pid 858] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 856] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 851] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 850] +++ exited with 0 +++ [pid 858] ioctl(4, LOOP_CLR_FD [pid 857] <... rt_sigprocmask resumed>[], 8) = 0 [pid 856] <... futex resumed>) = 0 [pid 854] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 852] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 858] <... ioctl resumed>) = 0 [pid 857] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 856] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 854] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 852] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 856] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 854] <... open resumed>) = 5 [pid 852] <... futex resumed>) = 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=850, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 857] <... clone3 resumed> => {parent_tid=[859]}, 88) = 859 [pid 856] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 854] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 852] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 857] rt_sigprocmask(SIG_SETMASK, [], [pid 856] <... openat resumed>) = 4 [pid 854] <... futex resumed>) = 1 [pid 851] <... futex resumed>) = 0 [pid 857] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 856] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 854] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 851] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 857] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 856] <... futex resumed>) = 1 [pid 854] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 852] <... futex resumed>) = 0 [pid 851] <... futex resumed>) = 0 [pid 858] ioctl(4, LOOP_SET_FD, 3 [pid 857] <... futex resumed>) = 0 [pid 856] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 854] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 852] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 851] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 858] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 857] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 856] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 852] <... futex resumed>) = 0 [pid 858] close(4 [pid 856] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 854] <... mmap resumed>) = 0x20000000 [pid 852] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 858] <... close resumed>) = 0 [pid 856] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 854] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 858] close(3 [pid 856] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 854] <... futex resumed>) = 1 [pid 851] <... futex resumed>) = 0 [pid 858] <... close resumed>) = 0 [pid 856] <... futex resumed>) = 1 [pid 854] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 852] <... futex resumed>) = 0 [pid 851] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 859 attached [pid 858] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 856] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 854] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 852] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 851] <... futex resumed>) = 0 [pid 858] <... futex resumed>) = 1 [pid 856] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 855] <... futex resumed>) = 0 [pid 854] memfd_create("syzkaller", 0 [pid 852] <... futex resumed>) = 0 [pid 851] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 859] set_robust_list(0x7fe6f87d19a0, 24 [pid 858] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 856] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 855] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 854] <... memfd_create resumed>) = 6 [pid 852] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 858] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 856] <... open resumed>) = 5 [pid 855] <... futex resumed>) = 0 [pid 858] chdir("./file0" [pid 856] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 855] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 858] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 856] <... futex resumed>) = 1 [pid 852] <... futex resumed>) = 0 [pid 858] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 856] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 852] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 858] <... futex resumed>) = 1 [pid 856] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 855] <... futex resumed>) = 0 [pid 852] <... futex resumed>) = 0 [pid 858] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 856] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 855] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 852] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 858] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 856] <... mmap resumed>) = 0x20000000 [pid 855] <... futex resumed>) = 0 [pid 858] creat("./bus", 000 [pid 856] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 855] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 858] <... creat resumed>) = 3 [pid 856] <... futex resumed>) = 1 [pid 852] <... futex resumed>) = 0 [pid 858] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 856] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 852] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 858] <... futex resumed>) = 1 [pid 856] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 855] <... futex resumed>) = 0 [pid 852] <... futex resumed>) = 0 [pid 858] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 856] memfd_create("syzkaller", 0 [pid 855] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 852] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 858] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 856] <... memfd_create resumed>) = 6 [pid 855] <... futex resumed>) = 0 [pid 858] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 856] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 855] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 859] <... set_robust_list resumed>) = 0 [pid 858] <... openat resumed>) = 4 [pid 856] <... mmap resumed>) = 0x7fe6f03b1000 [pid 854] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 858] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 856] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 854] <... mmap resumed>) = 0x7fe6f03b1000 [pid 859] rt_sigprocmask(SIG_SETMASK, [], [pid 858] <... futex resumed>) = 1 [pid 856] <... write resumed>) = 131072 [pid 855] <... futex resumed>) = 0 [pid 858] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 856] munmap(0x7fe6f03b1000, 138412032 [pid 855] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 858] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 856] <... munmap resumed>) = 0 [pid 855] <... futex resumed>) = 0 [pid 858] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 856] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 855] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 858] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 856] <... openat resumed>) = 7 [pid 858] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 856] ioctl(7, LOOP_SET_FD, 6 [pid 854] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 858] <... futex resumed>) = 1 [pid 856] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 855] <... futex resumed>) = 0 [pid 858] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 856] ioctl(7, LOOP_CLR_FD [pid 855] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 858] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 856] <... ioctl resumed>) = 0 [pid 855] <... futex resumed>) = 0 [pid 858] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 855] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 854] <... write resumed>) = 131072 [pid 859] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 858] <... open resumed>) = 5 [pid 303] <... openat resumed>) = 3 [pid 859] memfd_create("syzkaller", 0 [pid 858] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 854] munmap(0x7fe6f03b1000, 138412032 [pid 303] ioctl(3, LOOP_CLR_FD [pid 859] <... memfd_create resumed>) = 3 [pid 858] <... futex resumed>) = 1 [pid 855] <... futex resumed>) = 0 [pid 859] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 858] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 855] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 854] <... munmap resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 859] <... mmap resumed>) = 0x7fe6f03b1000 [pid 858] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 855] <... futex resumed>) = 0 [pid 858] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 855] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 858] <... mmap resumed>) = 0x20000000 [pid 856] ioctl(7, LOOP_SET_FD, 6 [pid 858] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 856] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 858] <... futex resumed>) = 1 [pid 856] close(7 [pid 855] <... futex resumed>) = 0 [pid 858] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 856] <... close resumed>) = 0 [pid 855] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 858] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 856] close(6 [pid 855] <... futex resumed>) = 0 [pid 858] memfd_create("syzkaller", 0 [pid 856] <... close resumed>) = 0 [pid 855] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 858] <... memfd_create resumed>) = 6 [pid 856] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 858] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 856] <... futex resumed>) = 1 [pid 852] <... futex resumed>) = 0 [pid 858] <... mmap resumed>) = 0x7fe6f03b1000 [pid 856] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 852] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 858] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 856] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 854] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 852] <... futex resumed>) = 0 [pid 303] close(3 [pid 858] <... write resumed>) = 131072 [pid 856] mknod(0x20000000, 000 [pid 854] <... openat resumed>) = 7 [pid 852] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 858] munmap(0x7fe6f03b1000, 138412032 [pid 856] <... mknod resumed>) = -1 EEXIST (File exists) [pid 854] ioctl(7, LOOP_SET_FD, 6 [pid 303] <... close resumed>) = 0 [pid 858] <... munmap resumed>) = 0 [pid 856] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 854] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 859] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 858] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 856] <... futex resumed>) = 1 [pid 854] ioctl(7, LOOP_CLR_FD [pid 852] <... futex resumed>) = 0 [pid 858] <... openat resumed>) = 7 [pid 856] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 854] <... ioctl resumed>) = 0 [pid 852] exit_group(0 [pid 858] ioctl(7, LOOP_SET_FD, 6 [pid 856] <... futex resumed>) = ? [pid 852] <... exit_group resumed>) = ? [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 860 [pid 859] <... write resumed>) = 262144 [pid 858] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 856] +++ exited with 0 +++ [pid 852] +++ exited with 0 +++ [pid 858] ioctl(7, LOOP_CLR_FD [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=852, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 858] <... ioctl resumed>) = 0 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 854] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 859] munmap(0x7fe6f03b1000, 138412032 [pid 854] close(7) = 0 [pid 854] close(6./strace-static-x86_64: Process 860 attached [pid 860] set_robust_list(0x5555636e06a0, 24 [pid 854] <... close resumed>) = 0 [pid 859] <... munmap resumed>) = 0 [pid 854] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 858] ioctl(7, LOOP_SET_FD, 6 [pid 859] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 858] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 854] <... futex resumed>) = 1 [pid 851] <... futex resumed>) = 0 [pid 858] close(7 [pid 854] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 851] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 859] <... openat resumed>) = 4 [pid 858] <... close resumed>) = 0 [pid 854] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 851] <... futex resumed>) = 0 [pid 859] ioctl(4, LOOP_SET_FD, 3 [pid 858] close(6 [pid 854] mknod(0x20000000, 000 [pid 851] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 859] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 858] <... close resumed>) = 0 [pid 854] <... mknod resumed>) = -1 EEXIST (File exists) [pid 858] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 859] ioctl(4, LOOP_CLR_FD [pid 858] <... futex resumed>) = 1 [pid 855] <... futex resumed>) = 0 [pid 854] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 858] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 855] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 859] <... ioctl resumed>) = 0 [pid 858] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 855] <... futex resumed>) = 0 [pid 854] <... futex resumed>) = 1 [pid 851] <... futex resumed>) = 0 [pid 858] mknod(0x20000000, 000 [pid 855] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 854] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 851] exit_group(0 [pid 858] <... mknod resumed>) = -1 EEXIST (File exists) [pid 854] <... futex resumed>) = ? [pid 851] <... exit_group resumed>) = ? [pid 858] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 854] +++ exited with 0 +++ [pid 851] +++ exited with 0 +++ [pid 858] <... futex resumed>) = 1 [pid 855] <... futex resumed>) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=851, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 858] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 855] exit_group(0 [pid 858] <... futex resumed>) = ? [pid 855] <... exit_group resumed>) = ? [pid 858] +++ exited with 0 +++ [pid 855] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=855, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 859] ioctl(4, LOOP_SET_FD, 3 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 859] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 859] close(4) = 0 [pid 859] close(3 [pid 860] <... set_robust_list resumed>) = 0 [pid 860] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 860] setpgid(0, 0 [pid 859] <... close resumed>) = 0 [pid 860] <... setpgid resumed>) = 0 [pid 860] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 executing program [pid 860] write(3, "1000", 4) = 4 [pid 860] close(3) = 0 [pid 860] write(1, "executing program\n", 18) = 18 [pid 860] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 860] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 860] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 860] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 860] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 305] <... openat resumed>) = 3 [pid 304] <... openat resumed>) = 3 [pid 305] ioctl(3, LOOP_CLR_FD [pid 304] ioctl(3, LOOP_CLR_FD [pid 860] rt_sigprocmask(SIG_BLOCK, ~[], [pid 305] <... ioctl resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 860] <... rt_sigprocmask resumed>[], 8) = 0 [pid 305] close(3 [pid 304] close(3 [pid 860] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 305] <... close resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 859] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 860] <... clone3 resumed> => {parent_tid=[861]}, 88) = 861 [pid 859] <... futex resumed>) = 1 [pid 857] <... futex resumed>) = 0 [pid 860] rt_sigprocmask(SIG_SETMASK, [], [pid 859] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 857] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 862 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 863 [pid 860] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 859] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 857] <... futex resumed>) = 0 [pid 860] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 859] chdir("./file0" [pid 857] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 860] <... futex resumed>) = 0 [pid 859] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 860] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 859] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 857] <... futex resumed>) = 0 ./strace-static-x86_64: Process 862 attached [pid 862] set_robust_list(0x5555636e06a0, 24) = 0 [pid 862] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 862] setpgid(0, 0) = 0 [pid 862] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 862] write(3, "1000", 4) = 4 [pid 862] close(3./strace-static-x86_64: Process 863 attached ) = 0 [pid 862] write(1, "executing program\n", 18 [pid 863] set_robust_list(0x5555636e06a0, 24 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 302] ioctl(3, LOOP_CLR_FD) = 0 [pid 302] close(3) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 864 executing program [pid 862] <... write resumed>) = 18 [pid 862] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 863] <... set_robust_list resumed>) = 0 [pid 863] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 862] <... futex resumed>) = 0 [pid 862] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 862] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 862] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 863] <... prctl resumed>) = 0 [pid 863] setpgid(0, 0 [pid 862] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 863] <... setpgid resumed>) = 0 [pid 863] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 859] creat("./bus", 000 [pid 857] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 862] rt_sigprocmask(SIG_BLOCK, ~[], [pid 859] <... creat resumed>) = 3 [pid 857] <... futex resumed>) = 0 [pid 859] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 857] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 859] <... futex resumed>) = 0 [pid 857] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 859] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 857] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 859] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 857] <... futex resumed>) = 0 [pid 859] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 857] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 859] <... openat resumed>) = 4 [pid 862] <... rt_sigprocmask resumed>[], 8) = 0 [pid 859] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 863] <... openat resumed>) = 3 [pid 862] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 859] <... futex resumed>) = 1 [pid 857] <... futex resumed>) = 0 [pid 859] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 857] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 859] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 857] <... futex resumed>) = 0 [pid 859] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 857] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 863] write(3, "1000", 4 [pid 859] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 863] <... write resumed>) = 4 [pid 862] <... clone3 resumed> => {parent_tid=[865]}, 88) = 865 [pid 859] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 861 attached [pid 863] close(3 [pid 862] rt_sigprocmask(SIG_SETMASK, [], [pid 859] <... futex resumed>) = 1 [pid 857] <... futex resumed>) = 0 [pid 859] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 857] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 861] set_robust_list(0x7fe6f87d19a0, 24 [pid 859] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 857] <... futex resumed>) = 0 [pid 861] <... set_robust_list resumed>) = 0 [pid 859] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 857] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 863] <... close resumed>) = 0 [pid 862] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 861] rt_sigprocmask(SIG_SETMASK, [], [pid 859] <... open resumed>) = 5 executing program [pid 863] write(1, "executing program\n", 18 [pid 862] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 861] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 859] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 863] <... write resumed>) = 18 [pid 862] <... futex resumed>) = 0 [pid 861] memfd_create("syzkaller", 0 [pid 859] <... futex resumed>) = 1 [pid 857] <... futex resumed>) = 0 [pid 863] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 862] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 861] <... memfd_create resumed>) = 3 [pid 859] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 857] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 861] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 859] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 857] <... futex resumed>) = 0 [pid 859] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 857] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 861] <... mmap resumed>) = 0x7fe6f03b1000 [pid 863] <... futex resumed>) = 0 [pid 859] <... mmap resumed>) = 0x20000000 [pid 863] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 859] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 863] <... rt_sigaction resumed>NULL, 8) = 0 [pid 859] <... futex resumed>) = 1 [pid 857] <... futex resumed>) = 0 [pid 859] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 857] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 859] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 857] <... futex resumed>) = 0 ./strace-static-x86_64: Process 864 attached [pid 863] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 859] memfd_create("syzkaller", 0 [pid 857] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 864] set_robust_list(0x5555636e06a0, 24 [pid 863] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 859] <... memfd_create resumed>) = 6 [pid 864] <... set_robust_list resumed>) = 0 [pid 863] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 859] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 864] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 863] <... mmap resumed>) = 0x7fe6f87b1000 [pid 859] <... mmap resumed>) = 0x7fe6f03b1000 [pid 864] <... prctl resumed>) = 0 [pid 863] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 864] setpgid(0, 0 [pid 863] <... mprotect resumed>) = 0 [pid 864] <... setpgid resumed>) = 0 [pid 863] rt_sigprocmask(SIG_BLOCK, ~[], [pid 864] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 863] <... rt_sigprocmask resumed>[], 8) = 0 [pid 864] <... openat resumed>) = 3 [pid 863] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 859] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 864] write(3, "1000", 4) = 4 [pid 863] <... clone3 resumed> => {parent_tid=[866]}, 88) = 866 [pid 864] close(3 [pid 863] rt_sigprocmask(SIG_SETMASK, [], [pid 864] <... close resumed>) = 0 [pid 863] <... rt_sigprocmask resumed>NULL, 8) = 0 executing program [pid 859] <... write resumed>) = 131072 [pid 864] write(1, "executing program\n", 18 [pid 863] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 859] munmap(0x7fe6f03b1000, 138412032 [pid 864] <... write resumed>) = 18 [pid 863] <... futex resumed>) = 0 [pid 864] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 863] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 859] <... munmap resumed>) = 0 [pid 864] <... futex resumed>) = 0 [pid 859] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 864] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 859] <... openat resumed>) = 7 [pid 864] <... rt_sigaction resumed>NULL, 8) = 0 [pid 859] ioctl(7, LOOP_SET_FD, 6 [pid 864] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 859] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 864] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 861] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 864] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 859] ioctl(7, LOOP_CLR_FD [pid 864] <... mmap resumed>) = 0x7fe6f87b1000 [pid 859] <... ioctl resumed>) = 0 [pid 864] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 864] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 861] <... write resumed>) = 262144 [pid 864] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[867]}, 88) = 867 ./strace-static-x86_64: Process 865 attached [pid 864] rt_sigprocmask(SIG_SETMASK, [], [pid 865] set_robust_list(0x7fe6f87d19a0, 24 [pid 864] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 859] ioctl(7, LOOP_SET_FD, 6 [pid 865] <... set_robust_list resumed>) = 0 [pid 864] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 861] munmap(0x7fe6f03b1000, 138412032 [pid 859] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 865] rt_sigprocmask(SIG_SETMASK, [], [pid 864] <... futex resumed>) = 0 [pid 861] <... munmap resumed>) = 0 [pid 859] close(7 [pid 865] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 864] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 861] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 859] <... close resumed>) = 0 [pid 865] memfd_create("syzkaller", 0 [pid 859] close(6 [pid 861] <... openat resumed>) = 4 ./strace-static-x86_64: Process 866 attached [pid 866] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 866] rt_sigprocmask(SIG_SETMASK, [], [pid 859] <... close resumed>) = 0 [pid 865] <... memfd_create resumed>) = 3 [pid 861] ioctl(4, LOOP_SET_FD, 3 [pid 859] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 865] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 861] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 859] <... futex resumed>) = 1 [pid 857] <... futex resumed>) = 0 [pid 859] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 857] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 865] <... mmap resumed>) = 0x7fe6f03b1000 [pid 861] ioctl(4, LOOP_CLR_FD [pid 859] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 857] <... futex resumed>) = 0 [pid 859] mknod(0x20000000, 000 [pid 857] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 859] <... mknod resumed>) = -1 EEXIST (File exists) [pid 866] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 859] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 857] <... futex resumed>) = 0 [pid 859] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 866] memfd_create("syzkaller", 0 [pid 857] exit_group(0 [pid 866] <... memfd_create resumed>) = 3 [pid 859] <... futex resumed>) = ? [pid 857] <... exit_group resumed>) = ? [pid 866] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 859] +++ exited with 0 +++ [pid 866] <... mmap resumed>) = 0x7fe6f03b1000 [pid 866] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 865] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 861] <... ioctl resumed>) = 0 [pid 857] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=857, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 868 [pid 866] <... write resumed>) = 262144 ./strace-static-x86_64: Process 867 attached [pid 867] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 865] <... write resumed>) = 262144 [pid 865] munmap(0x7fe6f03b1000, 138412032 [pid 861] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 865] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 868 attached [pid 865] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 861] close(4) = 0 [pid 868] set_robust_list(0x5555636e06a0, 24 [pid 865] <... openat resumed>) = 4 [pid 861] close(3 [pid 867] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 867] memfd_create("syzkaller", 0) = 3 [pid 868] <... set_robust_list resumed>) = 0 [pid 865] ioctl(4, LOOP_SET_FD, 3 [pid 861] <... close resumed>) = 0 [pid 867] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 861] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 865] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 861] <... futex resumed>) = 1 [pid 860] <... futex resumed>) = 0 [pid 868] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 867] <... mmap resumed>) = 0x7fe6f03b1000 [pid 865] ioctl(4, LOOP_CLR_FD [pid 861] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 860] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 868] <... prctl resumed>) = 0 [pid 867] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 865] <... ioctl resumed>) = 0 [pid 861] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 860] <... futex resumed>) = 0 [pid 868] setpgid(0, 0 [pid 861] chdir("./file0" [pid 860] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 866] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 866] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 866] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 866] ioctl(4, LOOP_CLR_FD) = 0 [pid 867] <... write resumed>) = 262144 [pid 867] munmap(0x7fe6f03b1000, 138412032 [pid 866] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 866] close(4) = 0 [pid 866] close(3) = 0 [pid 861] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 866] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 863] <... futex resumed>) = 0 [pid 863] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 863] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 866] <... futex resumed>) = 1 [pid 866] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 866] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 863] <... futex resumed>) = 0 [pid 866] creat("./bus", 000 [pid 863] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 866] <... creat resumed>) = 3 [pid 863] <... futex resumed>) = 0 [pid 866] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 863] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 868] <... setpgid resumed>) = 0 [pid 866] <... futex resumed>) = 0 [pid 863] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 861] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 866] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 863] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 868] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 866] <... openat resumed>) = 4 [pid 863] <... futex resumed>) = 0 [pid 861] <... futex resumed>) = 1 [pid 860] <... futex resumed>) = 0 [pid 868] <... openat resumed>) = 3 [pid 866] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 863] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 861] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 860] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 868] write(3, "1000", 4 [pid 866] <... futex resumed>) = 0 [pid 863] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 861] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 860] <... futex resumed>) = 0 [pid 868] <... write resumed>) = 4 [pid 866] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 865] ioctl(4, LOOP_SET_FD, 3 [pid 863] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 861] creat("./bus", 000 [pid 860] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 868] close(3 [pid 867] <... munmap resumed>) = 0 [pid 866] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 865] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 863] <... futex resumed>) = 0 [pid 868] <... close resumed>) = 0 [pid 867] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 866] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 865] close(4 [pid 863] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}executing program [pid 861] <... creat resumed>) = 3 [pid 868] write(1, "executing program\n", 18 [pid 867] <... openat resumed>) = 4 [pid 866] <... futex resumed>) = 0 [pid 865] <... close resumed>) = 0 [pid 863] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 861] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 868] <... write resumed>) = 18 [pid 867] ioctl(4, LOOP_SET_FD, 3 [pid 866] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 865] close(3 [pid 863] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 861] <... futex resumed>) = 1 [pid 860] <... futex resumed>) = 0 [pid 868] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 867] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 866] <... open resumed>) = 5 [pid 863] <... futex resumed>) = 0 [pid 867] ioctl(4, LOOP_CLR_FD [pid 866] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 863] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 867] <... ioctl resumed>) = 0 [pid 866] <... futex resumed>) = 0 [pid 865] <... close resumed>) = 0 [pid 863] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 861] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 860] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 868] <... futex resumed>) = 0 [pid 866] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 865] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 863] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 861] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 860] <... futex resumed>) = 0 [pid 868] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 866] <... mmap resumed>) = 0x20000000 [pid 865] <... futex resumed>) = 1 [pid 863] <... futex resumed>) = 0 [pid 862] <... futex resumed>) = 0 [pid 861] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 860] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 868] <... rt_sigaction resumed>NULL, 8) = 0 [pid 866] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 865] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 863] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 862] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 868] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 866] <... futex resumed>) = 0 [pid 865] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 863] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 862] <... futex resumed>) = 0 [pid 861] <... openat resumed>) = 4 [pid 868] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 866] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 865] chdir("./file0" [pid 863] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 862] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 861] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 868] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 867] ioctl(4, LOOP_SET_FD, 3 [pid 866] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 865] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 863] <... futex resumed>) = 0 [pid 861] <... futex resumed>) = 1 [pid 860] <... futex resumed>) = 0 [pid 868] <... mmap resumed>) = 0x7fe6f87b1000 [pid 867] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 866] memfd_create("syzkaller", 0 [pid 865] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 863] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 861] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 860] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 868] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 867] close(4 [pid 866] <... memfd_create resumed>) = 6 [pid 865] <... futex resumed>) = 1 [pid 862] <... futex resumed>) = 0 [pid 868] <... mprotect resumed>) = 0 [pid 867] <... close resumed>) = 0 [pid 866] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 865] creat("./bus", 000 [pid 862] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 861] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 860] <... futex resumed>) = 0 [pid 868] rt_sigprocmask(SIG_BLOCK, ~[], [pid 867] close(3 [pid 866] <... mmap resumed>) = 0x7fe6f03b1000 [pid 865] <... creat resumed>) = 3 [pid 862] <... futex resumed>) = 0 [pid 861] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 860] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 868] <... rt_sigprocmask resumed>[], 8) = 0 [pid 867] <... close resumed>) = 0 [pid 866] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 865] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 862] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 868] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 867] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 866] <... write resumed>) = 131072 [pid 865] <... futex resumed>) = 0 [pid 862] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 861] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 867] <... futex resumed>) = 1 [pid 866] munmap(0x7fe6f03b1000, 138412032 [pid 865] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 864] <... futex resumed>) = 0 [pid 862] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 861] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 868] <... clone3 resumed> => {parent_tid=[869]}, 88) = 869 [pid 867] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 866] <... munmap resumed>) = 0 [pid 865] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 864] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 862] <... futex resumed>) = 0 [pid 861] <... futex resumed>) = 1 [pid 860] <... futex resumed>) = 0 [pid 868] rt_sigprocmask(SIG_SETMASK, [], [pid 867] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 866] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 864] <... futex resumed>) = 0 [pid 862] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 867] chdir("./file0" [pid 866] <... openat resumed>) = 7 [pid 864] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 867] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 866] ioctl(7, LOOP_SET_FD, 6 [pid 867] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 866] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 867] <... futex resumed>) = 1 [pid 866] ioctl(7, LOOP_CLR_FD [pid 864] <... futex resumed>) = 0 [pid 867] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 866] <... ioctl resumed>) = 0 [pid 864] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 867] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 864] <... futex resumed>) = 0 [pid 867] creat("./bus", 000 [pid 864] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 867] <... creat resumed>) = 3 [pid 867] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 864] <... futex resumed>) = 0 [pid 867] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 864] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 867] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 864] <... futex resumed>) = 0 [pid 867] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 864] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 867] <... openat resumed>) = 4 [pid 867] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 866] ioctl(7, LOOP_SET_FD, 6 [pid 867] <... futex resumed>) = 1 [pid 866] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 864] <... futex resumed>) = 0 [pid 867] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 866] close(7 [pid 864] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 867] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 866] <... close resumed>) = 0 [pid 864] <... futex resumed>) = 0 [pid 867] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 866] close(6 [pid 864] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 868] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 867] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 866] <... close resumed>) = 0 [pid 865] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 861] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 860] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 868] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 867] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 866] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 868] <... futex resumed>) = 0 [pid 867] <... futex resumed>) = 1 [pid 866] <... futex resumed>) = 1 [pid 865] <... openat resumed>) = 4 [pid 864] <... futex resumed>) = 0 [pid 863] <... futex resumed>) = 0 [pid 861] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 860] <... futex resumed>) = 0 [pid 868] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 867] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 866] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 865] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 864] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 863] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 861] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 860] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 867] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 866] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 865] <... futex resumed>) = 1 [pid 864] <... futex resumed>) = 0 [pid 863] <... futex resumed>) = 0 [pid 862] <... futex resumed>) = 0 [pid 867] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 866] mknod(0x20000000, 000 [pid 865] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 864] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 863] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 862] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 861] <... open resumed>) = 5 [pid 867] <... open resumed>) = 5 [pid 866] <... mknod resumed>) = -1 EEXIST (File exists) [pid 865] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 862] <... futex resumed>) = 0 [pid 861] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 867] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 866] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 865] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 862] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 861] <... futex resumed>) = 1 [pid 860] <... futex resumed>) = 0 [pid 867] <... futex resumed>) = 1 [pid 866] <... futex resumed>) = 1 [pid 865] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 864] <... futex resumed>) = 0 [pid 863] <... futex resumed>) = 0 [pid 861] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 860] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 867] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 866] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 865] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 864] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 863] exit_group(0 [pid 861] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 860] <... futex resumed>) = 0 [pid 867] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 866] <... futex resumed>) = ? [pid 865] <... futex resumed>) = 1 [pid 864] <... futex resumed>) = 0 [pid 863] <... exit_group resumed>) = ? [pid 862] <... futex resumed>) = 0 [pid 861] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 860] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 869 attached [pid 867] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 866] +++ exited with 0 +++ [pid 865] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 864] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 863] +++ exited with 0 +++ [pid 862] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 861] <... mmap resumed>) = 0x20000000 [pid 869] set_robust_list(0x7fe6f87d19a0, 24 [pid 867] <... mmap resumed>) = 0x20000000 [pid 865] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 862] <... futex resumed>) = 0 [pid 861] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=863, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 869] <... set_robust_list resumed>) = 0 [pid 867] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 865] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 862] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 861] <... futex resumed>) = 1 [pid 860] <... futex resumed>) = 0 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 869] rt_sigprocmask(SIG_SETMASK, [], [pid 867] <... futex resumed>) = 1 [pid 865] <... open resumed>) = 5 [pid 864] <... futex resumed>) = 0 [pid 861] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 860] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... restart_syscall resumed>) = 0 [pid 869] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 867] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 865] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 864] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 861] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 860] <... futex resumed>) = 0 [pid 869] memfd_create("syzkaller", 0 [pid 867] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 865] <... futex resumed>) = 1 [pid 864] <... futex resumed>) = 0 [pid 862] <... futex resumed>) = 0 [pid 861] memfd_create("syzkaller", 0 [pid 860] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 869] <... memfd_create resumed>) = 3 [pid 867] memfd_create("syzkaller", 0 [pid 865] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 864] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 862] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 861] <... memfd_create resumed>) = 6 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 869] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 867] <... memfd_create resumed>) = 6 [pid 865] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 862] <... futex resumed>) = 0 [pid 861] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 304] <... openat resumed>) = 3 [pid 867] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 862] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] ioctl(3, LOOP_CLR_FD [pid 867] <... mmap resumed>) = 0x7fe6f03b1000 [pid 304] <... ioctl resumed>) = 0 [pid 869] <... mmap resumed>) = 0x7fe6f03b1000 [pid 867] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 865] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 861] <... mmap resumed>) = 0x7fe6f03b1000 [pid 304] close(3 [pid 867] <... write resumed>) = 131072 [pid 304] <... close resumed>) = 0 [pid 867] munmap(0x7fe6f03b1000, 138412032 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 867] <... munmap resumed>) = 0 [pid 867] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 870 [pid 867] <... openat resumed>) = 7 [pid 867] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 867] ioctl(7, LOOP_CLR_FD) = 0 [pid 867] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 867] close(7) = 0 [pid 867] close(6) = 0 [pid 867] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 864] <... futex resumed>) = 0 [pid 867] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 864] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 867] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 864] <... futex resumed>) = 0 [pid 867] mknod(0x20000000, 000 [pid 864] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 867] <... mknod resumed>) = -1 EEXIST (File exists) [pid 867] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 864] <... futex resumed>) = 0 [pid 867] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 864] exit_group(0 [pid 867] <... futex resumed>) = ? [pid 864] <... exit_group resumed>) = ? [pid 867] +++ exited with 0 +++ [pid 864] +++ exited with 0 +++ [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=864, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 865] <... mmap resumed>) = 0x20000000 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 865] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 861] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 865] <... futex resumed>) = 1 [pid 862] <... futex resumed>) = 0 [pid 862] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 865] memfd_create("syzkaller", 0 [pid 862] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 861] <... write resumed>) = 131072 [pid 865] <... memfd_create resumed>) = 6 [pid 861] munmap(0x7fe6f03b1000, 138412032 [pid 865] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 865] <... mmap resumed>) = 0x7fe6f03b1000 [pid 861] <... munmap resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 302] ioctl(3, LOOP_CLR_FD) = 0 [pid 302] close(3) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 871 ./strace-static-x86_64: Process 870 attached [pid 870] set_robust_list(0x5555636e06a0, 24 [pid 865] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 861] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 870] <... set_robust_list resumed>) = 0 [pid 870] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 865] <... write resumed>) = 131072 [pid 861] <... openat resumed>) = 7 [pid 865] munmap(0x7fe6f03b1000, 138412032 [pid 870] setpgid(0, 0) = 0 [pid 870] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 870] write(3, "1000", 4) = 4 [pid 870] close(3) = 0 [pid 870] write(1, "executing program\n", 18executing program ) = 18 [pid 870] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 870] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 870] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 870] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 870] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 870] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 870] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[872]}, 88) = 872 [pid 870] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 870] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 870] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 865] <... munmap resumed>) = 0 [pid 861] ioctl(7, LOOP_SET_FD, 6 [pid 865] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 861] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 871 attached [pid 871] set_robust_list(0x5555636e06a0, 24) = 0 [pid 871] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 865] <... openat resumed>) = 7 [pid 861] ioctl(7, LOOP_CLR_FD [pid 865] ioctl(7, LOOP_SET_FD, 6 [pid 861] <... ioctl resumed>) = 0 [pid 871] <... prctl resumed>) = 0 [pid 871] setpgid(0, 0) = 0 [pid 871] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 executing program [pid 871] write(3, "1000", 4) = 4 [pid 871] close(3) = 0 [pid 865] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 861] ioctl(7, LOOP_SET_FD, 6 [pid 865] ioctl(7, LOOP_CLR_FD [pid 871] write(1, "executing program\n", 18) = 18 [pid 871] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 871] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 871] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 871] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 871] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 871] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 871] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[873]}, 88) = 873 [pid 871] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 871] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 871] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 865] <... ioctl resumed>) = 0 [pid 861] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 861] close(7) = 0 [pid 861] close(6./strace-static-x86_64: Process 872 attached [pid 872] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 861] <... close resumed>) = 0 [pid 861] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 860] <... futex resumed>) = 0 [pid 860] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 861] mknod(0x20000000, 000 [pid 860] <... futex resumed>) = 0 [pid 861] <... mknod resumed>) = -1 EEXIST (File exists) [pid 861] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 860] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 869] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 865] ioctl(7, LOOP_SET_FD, 6 [pid 861] <... futex resumed>) = 0 [pid 860] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 865] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 861] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 865] close(7 [pid 860] exit_group(0) = ? [pid 872] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 865] <... close resumed>) = 0 [pid 861] <... futex resumed>) = ? [pid 865] close(6 [pid 872] memfd_create("syzkaller", 0) = 3 [pid 872] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 865] <... close resumed>) = 0 [pid 861] +++ exited with 0 +++ [pid 860] +++ exited with 0 +++ [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=860, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 865] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 865] <... futex resumed>) = 1 [pid 862] <... futex resumed>) = 0 [pid 862] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 865] mknod(0x20000000, 000 [pid 862] <... futex resumed>) = 0 [pid 865] <... mknod resumed>) = -1 EEXIST (File exists) [pid 862] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 865] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 862] <... futex resumed>) = 0 [pid 865] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 862] exit_group(0 [pid 865] <... futex resumed>) = ? [pid 862] <... exit_group resumed>) = ? [pid 303] <... restart_syscall resumed>) = 0 [pid 872] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 865] +++ exited with 0 +++ [pid 862] +++ exited with 0 +++ [pid 869] <... write resumed>) = 262144 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=862, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR./strace-static-x86_64: Process 873 attached [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 303] <... openat resumed>) = 3 [pid 873] set_robust_list(0x7fe6f87d19a0, 24 [pid 303] ioctl(3, LOOP_CLR_FD [pid 873] <... set_robust_list resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 873] rt_sigprocmask(SIG_SETMASK, [], [pid 303] close(3 [pid 873] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 303] <... close resumed>) = 0 [pid 873] memfd_create("syzkaller", 0 [pid 869] munmap(0x7fe6f03b1000, 138412032 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 873] <... memfd_create resumed>) = 3 [pid 873] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 873] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 869] <... munmap resumed>) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 874 [pid 869] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 872] <... write resumed>) = 262144 [pid 869] <... openat resumed>) = 4 [pid 872] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 872] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 872] ioctl(4, LOOP_SET_FD, 3 [pid 869] ioctl(4, LOOP_SET_FD, 3 [pid 872] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 872] ioctl(4, LOOP_CLR_FD) = 0 [pid 869] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] <... restart_syscall resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 869] ioctl(4, LOOP_CLR_FD [pid 305] ioctl(3, LOOP_CLR_FD) = 0 [pid 305] close(3) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 875 [pid 872] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 872] close(4) = 0 [pid 872] close(3) = 0 [pid 872] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 870] <... futex resumed>) = 0 [pid 870] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 869] <... ioctl resumed>) = 0 [pid 870] <... futex resumed>) = 0 [pid 870] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 872] <... futex resumed>) = 1 [pid 872] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 873] <... write resumed>) = 262144 [pid 872] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 870] <... futex resumed>) = 0 [pid 872] <... futex resumed>) = 1 [pid 870] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 872] creat("./bus", 000 [pid 870] <... futex resumed>) = 0 [pid 873] munmap(0x7fe6f03b1000, 138412032 [pid 872] <... creat resumed>) = 3 [pid 870] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 873] <... munmap resumed>) = 0 [pid 872] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 873] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 872] <... futex resumed>) = 1 [pid 870] <... futex resumed>) = 0 [pid 873] <... openat resumed>) = 4 [pid 872] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 870] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 869] ioctl(4, LOOP_SET_FD, 3 [pid 873] ioctl(4, LOOP_SET_FD, 3 [pid 872] <... openat resumed>) = 4 [pid 870] <... futex resumed>) = 0 [pid 873] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 872] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 870] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 873] ioctl(4, LOOP_CLR_FD [pid 872] <... futex resumed>) = 0 [pid 870] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 873] <... ioctl resumed>) = 0 [pid 872] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 870] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 869] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 872] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 870] <... futex resumed>) = 0 [pid 869] close(4 [pid 872] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 870] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 872] <... futex resumed>) = 0 [pid 870] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 872] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 870] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 875 attached [pid 872] <... open resumed>) = 5 [pid 870] <... futex resumed>) = 0 [pid 869] <... close resumed>) = 0 [pid 875] set_robust_list(0x5555636e06a0, 24 [pid 872] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 870] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 869] close(3./strace-static-x86_64: Process 874 attached [pid 875] <... set_robust_list resumed>) = 0 [pid 872] <... futex resumed>) = 0 [pid 870] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 875] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 873] ioctl(4, LOOP_SET_FD, 3 [pid 872] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 870] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 875] <... prctl resumed>) = 0 [pid 874] set_robust_list(0x5555636e06a0, 24 [pid 873] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 872] <... mmap resumed>) = 0x20000000 [pid 870] <... futex resumed>) = 0 [pid 869] <... close resumed>) = 0 [pid 875] setpgid(0, 0 [pid 873] close(4 [pid 872] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 870] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 869] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 874] <... set_robust_list resumed>) = 0 [pid 875] <... setpgid resumed>) = 0 [pid 873] <... close resumed>) = 0 [pid 872] <... futex resumed>) = 0 [pid 870] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 869] <... futex resumed>) = 1 [pid 868] <... futex resumed>) = 0 [pid 875] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 874] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 873] close(3 [pid 872] memfd_create("syzkaller", 0 [pid 870] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 869] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 868] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 875] <... openat resumed>) = 3 [pid 874] <... prctl resumed>) = 0 [pid 873] <... close resumed>) = 0 [pid 872] <... memfd_create resumed>) = 6 [pid 870] <... futex resumed>) = 0 [pid 869] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 868] <... futex resumed>) = 0 [pid 875] write(3, "1000", 4 [pid 874] setpgid(0, 0 [pid 873] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 872] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 870] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 869] chdir("./file0" [pid 868] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 875] <... write resumed>) = 4 [pid 874] <... setpgid resumed>) = 0 [pid 873] <... futex resumed>) = 1 [pid 872] <... mmap resumed>) = 0x7fe6f03b1000 [pid 871] <... futex resumed>) = 0 [pid 869] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 875] close(3 [pid 873] chdir("./file0" [pid 872] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 871] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 869] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 875] <... close resumed>) = 0 [pid 874] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 873] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 872] <... write resumed>) = 131072 [pid 871] <... futex resumed>) = 0 [pid 869] <... futex resumed>) = 1 [pid 868] <... futex resumed>) = 0 executing program [pid 875] write(1, "executing program\n", 18 [pid 873] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 872] munmap(0x7fe6f03b1000, 138412032 [pid 871] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 868] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 869] creat("./bus", 000 [pid 875] <... write resumed>) = 18 [pid 874] <... openat resumed>) = 3 [pid 873] <... futex resumed>) = 0 [pid 872] <... munmap resumed>) = 0 [pid 871] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 868] <... futex resumed>) = 0 [pid 875] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 874] write(3, "1000", 4 [pid 873] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 872] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 871] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 869] <... creat resumed>) = 3 [pid 868] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 875] <... futex resumed>) = 0 [pid 874] <... write resumed>) = 4 [pid 873] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 872] <... openat resumed>) = 7 [pid 871] <... futex resumed>) = 0 [pid 869] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 868] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 875] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 874] close(3 [pid 873] creat("./bus", 000 [pid 872] ioctl(7, LOOP_SET_FD, 6 [pid 871] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 869] <... futex resumed>) = 0 [pid 868] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 875] <... rt_sigaction resumed>NULL, 8) = 0 [pid 874] <... close resumed>) = 0 [pid 873] <... creat resumed>) = 3 [pid 872] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 869] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 868] <... futex resumed>) = 0 [pid 875] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 874] write(1, "executing program\n", 18 [pid 873] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 872] ioctl(7, LOOP_CLR_FDexecuting program [pid 868] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 875] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 874] <... write resumed>) = 18 [pid 873] <... futex resumed>) = 1 [pid 872] <... ioctl resumed>) = 0 [pid 871] <... futex resumed>) = 0 [pid 869] <... openat resumed>) = 4 [pid 875] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 874] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 873] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 871] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 869] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 875] <... mmap resumed>) = 0x7fe6f87b1000 [pid 874] <... futex resumed>) = 0 [pid 873] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 871] <... futex resumed>) = 0 [pid 868] <... futex resumed>) = 0 [pid 875] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 874] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 873] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 871] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 869] <... futex resumed>) = 1 [pid 875] <... mprotect resumed>) = 0 [pid 874] <... rt_sigaction resumed>NULL, 8) = 0 [pid 873] <... openat resumed>) = 4 [pid 869] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 868] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 875] rt_sigprocmask(SIG_BLOCK, ~[], [pid 874] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 873] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 872] ioctl(7, LOOP_SET_FD, 6 [pid 868] <... futex resumed>) = 0 [pid 875] <... rt_sigprocmask resumed>[], 8) = 0 [pid 874] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 873] <... futex resumed>) = 1 [pid 872] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 871] <... futex resumed>) = 0 [pid 869] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 868] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 875] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 874] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 873] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 872] close(7 [pid 871] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 869] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 868] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 874] <... mmap resumed>) = 0x7fe6f87b1000 [pid 873] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 872] <... close resumed>) = 0 [pid 871] <... futex resumed>) = 0 [pid 869] <... futex resumed>) = 0 [pid 868] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 875] <... clone3 resumed> => {parent_tid=[876]}, 88) = 876 [pid 874] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 873] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 872] close(6 [pid 871] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 869] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 868] <... futex resumed>) = 0 [pid 875] rt_sigprocmask(SIG_SETMASK, [], [pid 874] <... mprotect resumed>) = 0 [pid 873] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 872] <... close resumed>) = 0 [pid 869] <... open resumed>) = 5 [pid 868] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 875] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 874] rt_sigprocmask(SIG_BLOCK, ~[], [pid 873] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 872] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 869] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 868] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 875] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 874] <... rt_sigprocmask resumed>[], 8) = 0 [pid 873] <... futex resumed>) = 1 [pid 872] <... futex resumed>) = 1 [pid 871] <... futex resumed>) = 0 [pid 870] <... futex resumed>) = 0 [pid 869] <... futex resumed>) = 0 [pid 868] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 875] <... futex resumed>) = 0 [pid 874] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 873] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 872] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 871] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 870] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 869] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 868] <... futex resumed>) = 0 [pid 875] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 873] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 872] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 871] <... futex resumed>) = 0 [pid 870] <... futex resumed>) = 0 [pid 874] <... clone3 resumed> => {parent_tid=[877]}, 88) = 877 [pid 873] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 872] mknod(0x20000000, 000 [pid 871] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 870] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 869] <... mmap resumed>) = 0x20000000 [pid 868] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 874] rt_sigprocmask(SIG_SETMASK, [], [pid 873] <... open resumed>) = 5 [pid 872] <... mknod resumed>) = -1 EEXIST (File exists) [pid 874] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 873] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 872] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 869] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 868] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 874] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 873] <... futex resumed>) = 1 [pid 872] <... futex resumed>) = 1 [pid 871] <... futex resumed>) = 0 [pid 870] <... futex resumed>) = 0 [pid 869] <... futex resumed>) = 0 [pid 868] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 874] <... futex resumed>) = 0 [pid 873] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 872] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 871] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 870] exit_group(0 [pid 869] memfd_create("syzkaller", 0 [pid 868] <... futex resumed>) = 0 [pid 874] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 873] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 872] <... futex resumed>) = ? [pid 871] <... futex resumed>) = 0 [pid 870] <... exit_group resumed>) = ? [pid 869] <... memfd_create resumed>) = 6 [pid 868] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 873] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 872] +++ exited with 0 +++ [pid 871] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 870] +++ exited with 0 +++ [pid 869] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 876 attached [pid 873] <... mmap resumed>) = 0x20000000 [pid 869] <... mmap resumed>) = 0x7fe6f03b1000 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=870, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 876] set_robust_list(0x7fe6f87d19a0, 24 [pid 873] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 876] <... set_robust_list resumed>) = 0 [pid 873] <... futex resumed>) = 1 [pid 871] <... futex resumed>) = 0 [pid 876] rt_sigprocmask(SIG_SETMASK, [], [pid 873] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 871] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 876] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 873] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 871] <... futex resumed>) = 0 [pid 876] memfd_create("syzkaller", 0 [pid 873] memfd_create("syzkaller", 0 [pid 871] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 876] <... memfd_create resumed>) = 3 [pid 873] <... memfd_create resumed>) = 6 [pid 876] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 873] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 876] <... mmap resumed>) = 0x7fe6f03b1000 [pid 873] <... mmap resumed>) = 0x7fe6f03b1000 [pid 869] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 873] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 869] <... write resumed>) = 131072 [pid 873] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 869] munmap(0x7fe6f03b1000, 138412032 [pid 873] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 869] <... munmap resumed>) = 0 [pid 873] ioctl(7, LOOP_SET_FD, 6 [pid 869] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 876] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 873] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 869] <... openat resumed>) = 7 [pid 873] ioctl(7, LOOP_CLR_FD [pid 304] <... restart_syscall resumed>) = 0 [pid 873] <... ioctl resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 869] ioctl(7, LOOP_SET_FD, 6 [pid 304] <... openat resumed>) = 3 [pid 869] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] ioctl(3, LOOP_CLR_FD [pid 869] ioctl(7, LOOP_CLR_FD [pid 304] <... ioctl resumed>) = 0 [pid 869] <... ioctl resumed>) = 0 [pid 304] close(3 [pid 873] ioctl(7, LOOP_SET_FD, 6 [pid 304] <... close resumed>) = 0 [pid 873] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 873] close(7) = 0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 879 [pid 873] close(6 [pid 869] ioctl(7, LOOP_SET_FD, 6./strace-static-x86_64: Process 877 attached [pid 873] <... close resumed>) = 0 [pid 869] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 877] set_robust_list(0x7fe6f87d19a0, 24 [pid 876] <... write resumed>) = 262144 [pid 873] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 869] close(7 [pid 877] <... set_robust_list resumed>) = 0 [pid 873] <... futex resumed>) = 1 [pid 871] <... futex resumed>) = 0 [pid 877] rt_sigprocmask(SIG_SETMASK, [], [pid 876] munmap(0x7fe6f03b1000, 138412032 [pid 873] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 871] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 869] <... close resumed>) = 0 [pid 876] <... munmap resumed>) = 0 [pid 873] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 871] <... futex resumed>) = 0 [pid 869] close(6 [pid 877] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 876] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 873] mknod(0x20000000, 000 [pid 871] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 877] memfd_create("syzkaller", 0 [pid 876] <... openat resumed>) = 4 [pid 873] <... mknod resumed>) = -1 EEXIST (File exists) [pid 869] <... close resumed>) = 0 [pid 876] ioctl(4, LOOP_SET_FD, 3 [pid 873] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 869] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 877] <... memfd_create resumed>) = 3 [pid 876] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 873] <... futex resumed>) = 1 [pid 871] <... futex resumed>) = 0 [pid 869] <... futex resumed>) = 1 [pid 868] <... futex resumed>) = 0 [pid 877] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 876] ioctl(4, LOOP_CLR_FD [pid 873] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 871] exit_group(0 [pid 869] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 877] <... mmap resumed>) = 0x7fe6f03b1000 [pid 876] <... ioctl resumed>) = 0 [pid 873] <... futex resumed>) = ? [pid 871] <... exit_group resumed>) = ? [pid 869] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 868] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 879 attached [pid 873] +++ exited with 0 +++ [pid 877] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 871] +++ exited with 0 +++ [pid 869] mknod(0x20000000, 000 [pid 868] <... futex resumed>) = 0 [pid 879] set_robust_list(0x5555636e06a0, 24 [pid 869] <... mknod resumed>) = -1 EEXIST (File exists) [pid 868] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 879] <... set_robust_list resumed>) = 0 [pid 869] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 868] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=871, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 879] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 869] <... futex resumed>) = 0 [pid 868] exit_group(0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 879] <... prctl resumed>) = 0 [pid 877] <... write resumed>) = 262144 [pid 868] <... exit_group resumed>) = ? [pid 302] <... openat resumed>) = 3 [pid 879] setpgid(0, 0 [pid 876] ioctl(4, LOOP_SET_FD, 3 [pid 869] +++ exited with 0 +++ [pid 302] ioctl(3, LOOP_CLR_FD [pid 879] <... setpgid resumed>) = 0 [pid 876] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 302] <... ioctl resumed>) = 0 [pid 879] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 877] munmap(0x7fe6f03b1000, 138412032 [pid 876] close(4 [pid 868] +++ exited with 0 +++ [pid 302] close(3 [pid 879] <... openat resumed>) = 3 [pid 877] <... munmap resumed>) = 0 [pid 876] <... close resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=868, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] <... close resumed>) = 0 [pid 879] write(3, "1000", 4 [pid 877] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 876] close(3 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 879] <... write resumed>) = 4 [pid 877] <... openat resumed>) = 4 [pid 876] <... close resumed>) = 0 [pid 877] ioctl(4, LOOP_SET_FD, 3 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 880 [pid 877] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 877] ioctl(4, LOOP_CLR_FD [pid 876] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 879] close(3 [pid 877] <... ioctl resumed>) = 0 [pid 876] <... futex resumed>) = 1 [pid 875] <... futex resumed>) = 0 [pid 879] <... close resumed>) = 0 [pid 876] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULLexecuting program [pid 875] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 879] write(1, "executing program\n", 18 [pid 876] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 875] <... futex resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 879] <... write resumed>) = 18 [pid 876] chdir("./file0" [pid 875] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 879] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 877] ioctl(4, LOOP_SET_FD, 3 [pid 876] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 879] <... futex resumed>) = 0 [pid 877] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 876] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 879] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 877] close(4 [pid 876] <... futex resumed>) = 1 [pid 875] <... futex resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 879] <... rt_sigaction resumed>NULL, 8) = 0 [pid 877] <... close resumed>) = 0 [pid 876] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 875] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] ioctl(3, LOOP_CLR_FD [pid 879] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 877] close(3 [pid 876] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 875] <... futex resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 879] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 876] creat("./bus", 000 [pid 875] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] close(3 [pid 879] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 876] <... creat resumed>) = 3 [pid 306] <... close resumed>) = 0 [pid 877] <... close resumed>) = 0 [pid 879] <... mmap resumed>) = 0x7fe6f87b1000 [pid 876] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 877] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 879] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 876] <... futex resumed>) = 1 [pid 875] <... futex resumed>) = 0 [pid 879] <... mprotect resumed>) = 0 [pid 877] <... futex resumed>) = 1 [pid 876] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 875] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 874] <... futex resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 881 ./strace-static-x86_64: Process 880 attached [pid 879] rt_sigprocmask(SIG_BLOCK, ~[], [pid 877] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 876] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 875] <... futex resumed>) = 0 [pid 874] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 881 attached [pid 880] set_robust_list(0x5555636e06a0, 24 [pid 879] <... rt_sigprocmask resumed>[], 8) = 0 [pid 877] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 876] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 875] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 874] <... futex resumed>) = 0 [pid 881] set_robust_list(0x5555636e06a0, 24 [pid 880] <... set_robust_list resumed>) = 0 [pid 879] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 877] chdir("./file0" [pid 876] <... openat resumed>) = 4 [pid 874] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 881] <... set_robust_list resumed>) = 0 [pid 877] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 876] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 881] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 880] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 879] <... clone3 resumed> => {parent_tid=[882]}, 88) = 882 [pid 877] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 876] <... futex resumed>) = 1 [pid 875] <... futex resumed>) = 0 [pid 881] <... prctl resumed>) = 0 [pid 880] <... prctl resumed>) = 0 [pid 879] rt_sigprocmask(SIG_SETMASK, [], [pid 877] <... futex resumed>) = 1 [pid 876] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 875] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 874] <... futex resumed>) = 0 [pid 881] setpgid(0, 0 [pid 880] setpgid(0, 0 [pid 879] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 877] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 876] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 875] <... futex resumed>) = 0 [pid 874] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 881] <... setpgid resumed>) = 0 [pid 880] <... setpgid resumed>) = 0 [pid 879] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 877] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 876] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 875] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 874] <... futex resumed>) = 0 [pid 881] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 880] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 879] <... futex resumed>) = 0 [pid 877] creat("./bus", 000 [pid 874] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 881] <... openat resumed>) = 3 [pid 880] <... openat resumed>) = 3 [pid 879] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 877] <... creat resumed>) = 3 [pid 876] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 881] write(3, "1000", 4 [pid 880] write(3, "1000", 4 [pid 877] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 876] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 881] <... write resumed>) = 4 [pid 877] <... futex resumed>) = 1 [pid 876] <... futex resumed>) = 1 [pid 874] <... futex resumed>) = 0 [pid 881] close(3 [pid 880] <... write resumed>) = 4 [pid 877] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 876] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 875] <... futex resumed>) = 0 [pid 874] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 881] <... close resumed>) = 0 [pid 880] close(3 [pid 877] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 875] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 874] <... futex resumed>) = 0 ./strace-static-x86_64: Process 882 attached [pid 881] write(1, "executing program\n", 18 [pid 880] <... close resumed>) = 0 [pid 877] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 876] <... futex resumed>) = 0 [pid 875] <... futex resumed>) = 1 [pid 874] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 882] set_robust_list(0x7fe6f87d19a0, 24 [pid 881] <... write resumed>) = 18 executing program [pid 880] write(1, "executing program\n", 18 [pid 877] <... openat resumed>) = 4 [pid 876] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 875] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 882] <... set_robust_list resumed>) = 0 [pid 881] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 877] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 882] rt_sigprocmask(SIG_SETMASK, [], [pid 881] <... futex resumed>) = 0 [pid 880] <... write resumed>) = 18 [pid 877] <... futex resumed>) = 1 [pid 876] <... open resumed>) = 5 [pid 874] <... futex resumed>) = 0 [pid 882] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 881] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 877] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 880] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 876] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 874] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 882] memfd_create("syzkaller", 0 [pid 881] <... rt_sigaction resumed>NULL, 8) = 0 [pid 880] <... futex resumed>) = 0 [pid 877] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 876] <... futex resumed>) = 1 [pid 875] <... futex resumed>) = 0 [pid 874] <... futex resumed>) = 0 [pid 882] <... memfd_create resumed>) = 3 [pid 881] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 880] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 877] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 876] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 875] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 874] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 882] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 881] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 880] <... rt_sigaction resumed>NULL, 8) = 0 [pid 877] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 876] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 875] <... futex resumed>) = 0 [pid 882] <... mmap resumed>) = 0x7fe6f03b1000 [pid 881] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 880] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 877] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 876] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 875] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 881] <... mmap resumed>) = 0x7fe6f87b1000 [pid 880] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 877] <... futex resumed>) = 1 [pid 876] <... mmap resumed>) = 0x20000000 [pid 874] <... futex resumed>) = 0 [pid 880] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 877] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 876] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 874] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 880] <... mmap resumed>) = 0x7fe6f87b1000 [pid 877] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 876] <... futex resumed>) = 1 [pid 875] <... futex resumed>) = 0 [pid 874] <... futex resumed>) = 0 [pid 881] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 880] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 877] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 876] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 875] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 874] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 881] <... mprotect resumed>) = 0 [pid 880] <... mprotect resumed>) = 0 [pid 877] <... open resumed>) = 5 [pid 876] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 875] <... futex resumed>) = 0 [pid 881] rt_sigprocmask(SIG_BLOCK, ~[], [pid 880] rt_sigprocmask(SIG_BLOCK, ~[], [pid 877] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 876] memfd_create("syzkaller", 0 [pid 875] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 881] <... rt_sigprocmask resumed>[], 8) = 0 [pid 880] <... rt_sigprocmask resumed>[], 8) = 0 [pid 877] <... futex resumed>) = 1 [pid 876] <... memfd_create resumed>) = 6 [pid 874] <... futex resumed>) = 0 [pid 881] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 880] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 877] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 876] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 874] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 877] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 876] <... mmap resumed>) = 0x7fe6f03b1000 [pid 874] <... futex resumed>) = 0 [pid 881] <... clone3 resumed> => {parent_tid=[883]}, 88) = 883 [pid 880] <... clone3 resumed> => {parent_tid=[884]}, 88) = 884 [pid 877] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 876] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 874] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 882] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 881] rt_sigprocmask(SIG_SETMASK, [], [pid 880] rt_sigprocmask(SIG_SETMASK, [], [pid 877] <... mmap resumed>) = 0x20000000 [pid 876] <... write resumed>) = 131072 [pid 881] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 880] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 877] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 876] munmap(0x7fe6f03b1000, 138412032 [pid 881] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 880] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 877] <... futex resumed>) = 1 [pid 876] <... munmap resumed>) = 0 [pid 874] <... futex resumed>) = 0 [pid 881] <... futex resumed>) = 0 [pid 880] <... futex resumed>) = 0 [pid 877] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 876] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 874] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 882] <... write resumed>) = 262144 [pid 881] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 880] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 877] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 876] <... openat resumed>) = 7 [pid 874] <... futex resumed>) = 0 [pid 882] munmap(0x7fe6f03b1000, 138412032 [pid 877] memfd_create("syzkaller", 0 [pid 876] ioctl(7, LOOP_SET_FD, 6 [pid 874] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 882] <... munmap resumed>) = 0 [pid 877] <... memfd_create resumed>) = 6 [pid 876] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 882] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 877] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 876] ioctl(7, LOOP_CLR_FD [pid 882] <... openat resumed>) = 4 [pid 877] <... mmap resumed>) = 0x7fe6f03b1000 [pid 876] <... ioctl resumed>) = 0 [pid 882] ioctl(4, LOOP_SET_FD, 3 [pid 877] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 876] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 876] close(7 [pid 882] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 877] <... write resumed>) = 131072 [pid 876] <... close resumed>) = 0 [pid 882] ioctl(4, LOOP_CLR_FD [pid 877] munmap(0x7fe6f03b1000, 138412032 [pid 876] close(6 [pid 882] <... ioctl resumed>) = 0 [pid 877] <... munmap resumed>) = 0 [pid 876] <... close resumed>) = 0 [pid 877] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 876] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 877] <... openat resumed>) = 7 [pid 876] <... futex resumed>) = 1 [pid 875] <... futex resumed>) = 0 ./strace-static-x86_64: Process 884 attached [pid 877] ioctl(7, LOOP_SET_FD, 6 [pid 876] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 875] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 884] set_robust_list(0x7fe6f87d19a0, 24 [pid 882] ioctl(4, LOOP_SET_FD, 3 [pid 877] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 876] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 875] <... futex resumed>) = 0 [pid 884] <... set_robust_list resumed>) = 0 [pid 882] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 877] ioctl(7, LOOP_CLR_FD [pid 876] mknod(0x20000000, 000 [pid 875] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 884] rt_sigprocmask(SIG_SETMASK, [], [pid 882] close(4 [pid 877] <... ioctl resumed>) = 0 [pid 876] <... mknod resumed>) = -1 EEXIST (File exists) ./strace-static-x86_64: Process 883 attached [pid 884] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 882] <... close resumed>) = 0 [pid 876] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 884] memfd_create("syzkaller", 0 [pid 883] set_robust_list(0x7fe6f87d19a0, 24 [pid 882] close(3 [pid 876] <... futex resumed>) = 1 [pid 875] <... futex resumed>) = 0 [pid 884] <... memfd_create resumed>) = 3 [pid 876] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 875] exit_group(0 [pid 884] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 883] <... set_robust_list resumed>) = 0 [pid 882] <... close resumed>) = 0 [pid 877] ioctl(7, LOOP_SET_FD, 6 [pid 876] <... futex resumed>) = ? [pid 875] <... exit_group resumed>) = ? [pid 884] <... mmap resumed>) = 0x7fe6f03b1000 [pid 883] rt_sigprocmask(SIG_SETMASK, [], [pid 882] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 877] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 876] +++ exited with 0 +++ [pid 875] +++ exited with 0 +++ [pid 884] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 883] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 882] <... futex resumed>) = 1 [pid 879] <... futex resumed>) = 0 [pid 877] close(7 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=875, si_uid=0, si_status=0, si_utime=1, si_stime=0} --- [pid 883] memfd_create("syzkaller", 0 [pid 882] chdir("./file0" [pid 879] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 877] <... close resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 883] <... memfd_create resumed>) = 3 [pid 882] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 879] <... futex resumed>) = 0 [pid 877] close(6 [pid 883] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 882] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 879] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 884] <... write resumed>) = 262144 [pid 883] <... mmap resumed>) = 0x7fe6f03b1000 [pid 882] <... futex resumed>) = 0 [pid 879] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 877] <... close resumed>) = 0 [pid 879] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 882] creat("./bus", 000 [pid 879] <... futex resumed>) = 0 [pid 877] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 884] munmap(0x7fe6f03b1000, 138412032 [pid 879] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 884] <... munmap resumed>) = 0 [pid 882] <... creat resumed>) = 3 [pid 877] <... futex resumed>) = 1 [pid 874] <... futex resumed>) = 0 [pid 882] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 877] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 874] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 884] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 882] <... futex resumed>) = 1 [pid 879] <... futex resumed>) = 0 [pid 877] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 874] <... futex resumed>) = 0 [pid 884] <... openat resumed>) = 4 [pid 882] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 879] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 877] mknod(0x20000000, 000 [pid 874] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 884] ioctl(4, LOOP_SET_FD, 3 [pid 883] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 882] <... openat resumed>) = 4 [pid 879] <... futex resumed>) = 0 [pid 877] <... mknod resumed>) = -1 EEXIST (File exists) [pid 884] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 882] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 879] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 877] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 884] ioctl(4, LOOP_CLR_FD [pid 879] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 884] <... ioctl resumed>) = 0 [pid 882] <... futex resumed>) = 0 [pid 879] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 877] <... futex resumed>) = 1 [pid 874] <... futex resumed>) = 0 [pid 882] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 879] <... futex resumed>) = 0 [pid 877] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 879] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 874] exit_group(0 [pid 882] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 877] <... futex resumed>) = ? [pid 874] <... exit_group resumed>) = ? [pid 882] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 877] +++ exited with 0 +++ [pid 883] <... write resumed>) = 262144 [pid 882] <... futex resumed>) = 1 [pid 879] <... futex resumed>) = 0 [pid 874] +++ exited with 0 +++ [pid 883] munmap(0x7fe6f03b1000, 138412032 [pid 882] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 879] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 882] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 879] <... futex resumed>) = 0 [pid 882] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 879] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=874, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 884] ioctl(4, LOOP_SET_FD, 3 [pid 883] <... munmap resumed>) = 0 [pid 882] <... open resumed>) = 5 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 883] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 882] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 884] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 883] <... openat resumed>) = 4 [pid 882] <... futex resumed>) = 1 [pid 879] <... futex resumed>) = 0 [pid 884] close(4 [pid 883] ioctl(4, LOOP_SET_FD, 3 [pid 882] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 879] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... restart_syscall resumed>) = 0 [pid 884] <... close resumed>) = 0 [pid 883] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 882] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 879] <... futex resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 883] ioctl(4, LOOP_CLR_FD [pid 882] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 879] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 884] close(3 [pid 883] <... ioctl resumed>) = 0 [pid 882] <... mmap resumed>) = 0x20000000 [pid 882] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 882] <... futex resumed>) = 1 [pid 879] <... futex resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 303] <... openat resumed>) = 3 [pid 882] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 879] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] ioctl(3, LOOP_CLR_FD [pid 303] ioctl(3, LOOP_CLR_FD [pid 882] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 879] <... futex resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 882] memfd_create("syzkaller", 0 [pid 879] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 305] close(3 [pid 303] close(3 [pid 882] <... memfd_create resumed>) = 6 [pid 305] <... close resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 882] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 882] <... mmap resumed>) = 0x7fe6f03b1000 [pid 883] ioctl(4, LOOP_SET_FD, 3 [pid 882] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 885 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 886 [pid 884] <... close resumed>) = 0 [pid 883] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 882] <... write resumed>) = 131072 [pid 884] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 883] close(4 [pid 882] munmap(0x7fe6f03b1000, 138412032 [pid 884] <... futex resumed>) = 1 [pid 883] <... close resumed>) = 0 [pid 882] <... munmap resumed>) = 0 [pid 880] <... futex resumed>) = 0 [pid 883] close(3 [pid 882] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 880] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 886 attached ./strace-static-x86_64: Process 885 attached [pid 884] chdir("./file0" [pid 883] <... close resumed>) = 0 [pid 882] <... openat resumed>) = 7 [pid 880] <... futex resumed>) = 0 [pid 886] set_robust_list(0x5555636e06a0, 24 [pid 885] set_robust_list(0x5555636e06a0, 24 [pid 884] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 883] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 882] ioctl(7, LOOP_SET_FD, 6 [pid 880] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 886] <... set_robust_list resumed>) = 0 [pid 885] <... set_robust_list resumed>) = 0 [pid 884] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 883] <... futex resumed>) = 1 [pid 882] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 881] <... futex resumed>) = 0 [pid 880] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 886] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 885] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 884] <... futex resumed>) = 0 [pid 883] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 882] ioctl(7, LOOP_CLR_FD [pid 881] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 880] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 886] <... prctl resumed>) = 0 [pid 885] <... prctl resumed>) = 0 [pid 884] creat("./bus", 000 [pid 883] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 882] <... ioctl resumed>) = 0 [pid 881] <... futex resumed>) = 0 [pid 880] <... futex resumed>) = 0 [pid 886] setpgid(0, 0 [pid 885] setpgid(0, 0 [pid 884] <... creat resumed>) = 3 [pid 883] chdir("./file0" [pid 881] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 880] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 886] <... setpgid resumed>) = 0 [pid 885] <... setpgid resumed>) = 0 [pid 884] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 883] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 880] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 886] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 885] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 884] <... futex resumed>) = 0 [pid 883] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 880] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 886] <... openat resumed>) = 3 [pid 885] <... openat resumed>) = 3 [pid 884] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 883] <... futex resumed>) = 1 [pid 882] ioctl(7, LOOP_SET_FD, 6 [pid 881] <... futex resumed>) = 0 [pid 880] <... futex resumed>) = 0 [pid 886] write(3, "1000", 4 [pid 885] write(3, "1000", 4 [pid 884] <... openat resumed>) = 4 [pid 883] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 882] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 881] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 880] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 886] <... write resumed>) = 4 [pid 885] <... write resumed>) = 4 [pid 884] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 880] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 886] close(3 [pid 885] close(3 [pid 884] <... futex resumed>) = 0 [pid 883] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 882] close(7 [pid 881] <... futex resumed>) = 0 [pid 880] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 886] <... close resumed>) = 0 [pid 885] <... close resumed>) = 0 [pid 884] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 883] creat("./bus", 000 [pid 882] <... close resumed>) = 0 [pid 881] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 880] <... futex resumed>) = 0 executing program [pid 886] write(1, "executing program\n", 18executing program [pid 885] write(1, "executing program\n", 18 [pid 884] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 880] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 886] <... write resumed>) = 18 [pid 885] <... write resumed>) = 18 [pid 884] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 880] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 886] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 885] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 884] <... futex resumed>) = 0 [pid 880] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 886] <... futex resumed>) = 0 [pid 885] <... futex resumed>) = 0 [pid 883] <... creat resumed>) = 3 [pid 882] close(6 [pid 880] <... futex resumed>) = 0 [pid 884] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 886] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 885] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 883] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 882] <... close resumed>) = 0 [pid 880] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 886] <... rt_sigaction resumed>NULL, 8) = 0 [pid 885] <... rt_sigaction resumed>NULL, 8) = 0 [pid 884] <... open resumed>) = 5 [pid 883] <... futex resumed>) = 1 [pid 882] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 881] <... futex resumed>) = 0 [pid 886] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 885] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 884] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 883] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 882] <... futex resumed>) = 1 [pid 881] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 879] <... futex resumed>) = 0 [pid 886] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 885] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 884] <... futex resumed>) = 1 [pid 883] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 882] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 881] <... futex resumed>) = 0 [pid 880] <... futex resumed>) = 0 [pid 879] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 886] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 885] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 884] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 883] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 882] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 881] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 880] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 879] <... futex resumed>) = 0 [pid 886] <... mmap resumed>) = 0x7fe6f87b1000 [pid 885] <... mmap resumed>) = 0x7fe6f87b1000 [pid 884] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 883] <... openat resumed>) = 4 [pid 882] mknod(0x20000000, 000 [pid 880] <... futex resumed>) = 0 [pid 879] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 886] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 885] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 884] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 883] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 882] <... mknod resumed>) = -1 EEXIST (File exists) [pid 880] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 886] <... mprotect resumed>) = 0 [pid 885] <... mprotect resumed>) = 0 [pid 883] <... futex resumed>) = 1 [pid 882] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 881] <... futex resumed>) = 0 [pid 884] <... mmap resumed>) = 0x20000000 [pid 883] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 882] <... futex resumed>) = 1 [pid 881] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 879] <... futex resumed>) = 0 [pid 886] rt_sigprocmask(SIG_BLOCK, ~[], [pid 885] rt_sigprocmask(SIG_BLOCK, ~[], [pid 884] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 883] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 882] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 881] <... futex resumed>) = 0 [pid 879] exit_group(0 [pid 886] <... rt_sigprocmask resumed>[], 8) = 0 [pid 885] <... rt_sigprocmask resumed>[], 8) = 0 [pid 884] <... futex resumed>) = 1 [pid 883] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 882] <... futex resumed>) = ? [pid 881] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 880] <... futex resumed>) = 0 [pid 879] <... exit_group resumed>) = ? [pid 886] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 885] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 884] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 883] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 882] +++ exited with 0 +++ [pid 880] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 879] +++ exited with 0 +++ [pid 883] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 881] <... futex resumed>) = 0 [pid 886] <... clone3 resumed> => {parent_tid=[887]}, 88) = 887 [pid 884] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 883] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 881] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 880] <... futex resumed>) = 0 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=879, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 886] rt_sigprocmask(SIG_SETMASK, [], [pid 885] <... clone3 resumed> => {parent_tid=[888]}, 88) = 888 [pid 884] memfd_create("syzkaller", 0 [pid 883] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 881] <... futex resumed>) = 0 [pid 880] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 886] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 885] rt_sigprocmask(SIG_SETMASK, [], [pid 884] <... memfd_create resumed>) = 6 [pid 883] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 881] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 886] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 885] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 884] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 883] <... open resumed>) = 5 [pid 886] <... futex resumed>) = 0 [pid 885] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 884] <... mmap resumed>) = 0x7fe6f03b1000 [pid 883] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 886] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 885] <... futex resumed>) = 0 [pid 883] <... futex resumed>) = 1 [pid 881] <... futex resumed>) = 0 [pid 883] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 881] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 883] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 881] <... futex resumed>) = 0 [pid 883] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 881] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 883] <... mmap resumed>) = 0x20000000 [pid 883] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 881] <... futex resumed>) = 0 [pid 883] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 881] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 883] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 881] <... futex resumed>) = 0 [pid 883] memfd_create("syzkaller", 0 [pid 881] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 883] <... memfd_create resumed>) = 6 [pid 883] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 884] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 885] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 883] <... mmap resumed>) = 0x7fe6f03b1000 [pid 884] <... write resumed>) = 131072 [pid 883] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072./strace-static-x86_64: Process 888 attached [pid 884] munmap(0x7fe6f03b1000, 138412032 [pid 883] <... write resumed>) = 131072 [pid 888] set_robust_list(0x7fe6f87d19a0, 24 [pid 883] munmap(0x7fe6f03b1000, 138412032 [pid 888] <... set_robust_list resumed>) = 0 [pid 884] <... munmap resumed>) = 0 [pid 883] <... munmap resumed>) = 0 [pid 888] rt_sigprocmask(SIG_SETMASK, [], [pid 884] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 883] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 888] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 884] <... openat resumed>) = 7 [pid 883] <... openat resumed>) = 7 ./strace-static-x86_64: Process 887 attached [pid 888] memfd_create("syzkaller", 0 [pid 884] ioctl(7, LOOP_SET_FD, 6 [pid 883] ioctl(7, LOOP_SET_FD, 6 [pid 888] <... memfd_create resumed>) = 3 [pid 887] set_robust_list(0x7fe6f87d19a0, 24 [pid 884] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 883] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 888] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 887] <... set_robust_list resumed>) = 0 [pid 884] ioctl(7, LOOP_CLR_FD [pid 883] ioctl(7, LOOP_CLR_FD [pid 888] <... mmap resumed>) = 0x7fe6f03b1000 [pid 887] rt_sigprocmask(SIG_SETMASK, [], [pid 884] <... ioctl resumed>) = 0 [pid 883] <... ioctl resumed>) = 0 [pid 887] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 887] memfd_create("syzkaller", 0) = 3 [pid 887] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 888] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 884] ioctl(7, LOOP_SET_FD, 6 [pid 883] ioctl(7, LOOP_SET_FD, 6 [pid 884] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 883] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 884] close(7 [pid 883] close(7 [pid 888] munmap(0x7fe6f03b1000, 138412032 [pid 887] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 884] <... close resumed>) = 0 [pid 883] <... close resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 888] <... munmap resumed>) = 0 [pid 887] <... write resumed>) = 262144 [pid 884] close(6 [pid 888] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 887] munmap(0x7fe6f03b1000, 138412032 [pid 884] <... close resumed>) = 0 [pid 883] close(6 [pid 888] <... openat resumed>) = 4 [pid 887] <... munmap resumed>) = 0 [pid 884] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 888] ioctl(4, LOOP_SET_FD, 3 [pid 887] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 884] <... futex resumed>) = 1 [pid 883] <... close resumed>) = 0 [pid 880] <... futex resumed>) = 0 [pid 304] <... openat resumed>) = 3 [pid 888] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 887] <... openat resumed>) = 4 [pid 884] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 883] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 880] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] ioctl(3, LOOP_CLR_FD [pid 888] ioctl(4, LOOP_CLR_FD [pid 887] ioctl(4, LOOP_SET_FD, 3 [pid 884] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 883] <... futex resumed>) = 1 [pid 881] <... futex resumed>) = 0 [pid 880] <... futex resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 888] <... ioctl resumed>) = 0 [pid 887] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 884] mknod(0x20000000, 000 [pid 883] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 881] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 880] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] close(3 [pid 887] ioctl(4, LOOP_CLR_FD [pid 884] <... mknod resumed>) = -1 EEXIST (File exists) [pid 883] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 881] <... futex resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 887] <... ioctl resumed>) = 0 [pid 884] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 883] mknod(0x20000000, 000 [pid 881] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 884] <... futex resumed>) = 1 [pid 883] <... mknod resumed>) = -1 EEXIST (File exists) [pid 880] <... futex resumed>) = 0 [pid 884] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 883] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 880] exit_group(0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 889 [pid 888] ioctl(4, LOOP_SET_FD, 3 [pid 884] <... futex resumed>) = ? [pid 883] <... futex resumed>) = 1 [pid 881] <... futex resumed>) = 0 [pid 880] <... exit_group resumed>) = ? [pid 888] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 884] +++ exited with 0 +++ [pid 883] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 881] exit_group(0 [pid 880] +++ exited with 0 +++ [pid 888] close(4 [pid 887] ioctl(4, LOOP_SET_FD, 3 [pid 883] <... futex resumed>) = ? [pid 881] <... exit_group resumed>) = ? [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=880, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- ./strace-static-x86_64: Process 889 attached [pid 888] <... close resumed>) = 0 [pid 883] +++ exited with 0 +++ [pid 887] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 881] +++ exited with 0 +++ [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 889] set_robust_list(0x5555636e06a0, 24 [pid 888] close(3 [pid 887] close(4 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=881, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] <... restart_syscall resumed>) = 0 [pid 889] <... set_robust_list resumed>) = 0 [pid 889] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 889] setpgid(0, 0 [pid 306] <... openat resumed>) = 3 [pid 887] <... close resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 306] ioctl(3, LOOP_CLR_FD [pid 889] <... setpgid resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 887] close(3 [pid 306] close(3 [pid 302] ioctl(3, LOOP_CLR_FD [pid 889] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 306] <... close resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 302] close(3 [pid 889] <... openat resumed>) = 3 [pid 888] <... close resumed>) = 0 [pid 887] <... close resumed>) = 0 [pid 302] <... close resumed>) = 0 [pid 888] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 887] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 890 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 888] <... futex resumed>) = 1 [pid 887] <... futex resumed>) = 1 [pid 886] <... futex resumed>) = 0 [pid 885] <... futex resumed>) = 0 [pid 888] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 887] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 886] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 885] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 891 [pid 888] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 887] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 886] <... futex resumed>) = 0 [pid 885] <... futex resumed>) = 0 [pid 888] chdir("./file0" [pid 887] chdir("./file0" [pid 886] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 885] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 889] write(3, "1000", 4 [pid 888] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 887] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 888] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 887] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 888] <... futex resumed>) = 1 [pid 887] <... futex resumed>) = 1 [pid 886] <... futex resumed>) = 0 [pid 885] <... futex resumed>) = 0 [pid 888] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 887] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 886] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 885] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 888] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 887] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 886] <... futex resumed>) = 0 [pid 885] <... futex resumed>) = 0 [pid 888] creat("./bus", 000 [pid 887] creat("./bus", 000 [pid 886] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 885] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 888] <... creat resumed>) = 3 [pid 887] <... creat resumed>) = 3 [pid 888] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 887] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 888] <... futex resumed>) = 1 [pid 887] <... futex resumed>) = 1 [pid 886] <... futex resumed>) = 0 [pid 885] <... futex resumed>) = 0 [pid 888] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 887] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 886] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 885] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 890 attached [pid 889] <... write resumed>) = 4 [pid 888] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 887] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 886] <... futex resumed>) = 0 [pid 885] <... futex resumed>) = 0 [pid 890] set_robust_list(0x5555636e06a0, 24 [pid 889] close(3 [pid 888] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 887] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 886] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 885] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 890] <... set_robust_list resumed>) = 0 [pid 889] <... close resumed>) = 0 [pid 888] <... openat resumed>) = 4 [pid 887] <... openat resumed>) = 4 ./strace-static-x86_64: Process 891 attached [pid 890] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 889] write(1, "executing program\n", 18 [pid 888] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 887] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 891] set_robust_list(0x5555636e06a0, 24 [pid 890] <... prctl resumed>) = 0 [pid 889] <... write resumed>) = 18 [pid 888] <... futex resumed>) = 1 [pid 887] <... futex resumed>) = 1 [pid 886] <... futex resumed>) = 0 [pid 885] <... futex resumed>) = 0 [pid 891] <... set_robust_list resumed>) = 0 [pid 890] setpgid(0, 0 [pid 889] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 888] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 887] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 886] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 885] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 891] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 890] <... setpgid resumed>) = 0 [pid 889] <... futex resumed>) = 0 [pid 888] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 887] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 886] <... futex resumed>) = 0 [pid 885] <... futex resumed>) = 0 [pid 891] <... prctl resumed>) = 0 [pid 890] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 889] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 888] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 887] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 886] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 885] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 891] setpgid(0, 0 [pid 890] <... openat resumed>) = 3 [pid 889] <... rt_sigaction resumed>NULL, 8) = 0 [pid 888] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 887] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 891] <... setpgid resumed>) = 0 [pid 890] write(3, "1000", 4 [pid 889] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 888] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 887] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 888] <... futex resumed>) = 1 [pid 887] <... futex resumed>) = 1 [pid 886] <... futex resumed>) = 0 [pid 885] <... futex resumed>) = 0 [pid 888] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 887] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 886] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 885] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 888] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 887] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 886] <... futex resumed>) = 0 [pid 885] <... futex resumed>) = 0 [pid 888] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 887] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 886] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 885] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 888] <... open resumed>) = 5 [pid 887] <... open resumed>) = 5 [pid 888] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 887] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 888] <... futex resumed>) = 1 [pid 887] <... futex resumed>) = 1 [pid 886] <... futex resumed>) = 0 [pid 885] <... futex resumed>) = 0 [pid 888] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 887] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 886] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 885] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 888] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 887] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 886] <... futex resumed>) = 0 [pid 885] <... futex resumed>) = 0 [pid 888] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 887] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 886] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 885] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 888] <... mmap resumed>) = 0x20000000 [pid 887] <... mmap resumed>) = 0x20000000 [pid 888] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 887] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 888] <... futex resumed>) = 1 [pid 887] <... futex resumed>) = 1 [pid 886] <... futex resumed>) = 0 [pid 885] <... futex resumed>) = 0 [pid 890] <... write resumed>) = 4 [pid 889] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 888] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 887] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 886] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 885] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 891] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 890] close(3 [pid 889] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 888] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 887] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 886] <... futex resumed>) = 0 [pid 885] <... futex resumed>) = 0 [pid 890] <... close resumed>) = 0 [pid 889] <... mmap resumed>) = 0x7fe6f87b1000 [pid 888] memfd_create("syzkaller", 0 [pid 887] memfd_create("syzkaller", 0 [pid 886] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 885] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 890] write(1, "executing program\n", 18 [pid 889] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 888] <... memfd_create resumed>) = 6 executing program [pid 887] <... memfd_create resumed>) = 6 [pid 891] <... openat resumed>) = 3 [pid 890] <... write resumed>) = 18 [pid 889] <... mprotect resumed>) = 0 [pid 888] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 887] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 890] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 889] rt_sigprocmask(SIG_BLOCK, ~[], [pid 888] <... mmap resumed>) = 0x7fe6f03b1000 [pid 891] write(3, "1000", 4 [pid 887] <... mmap resumed>) = 0x7fe6f03b1000 [pid 890] <... futex resumed>) = 0 [pid 889] <... rt_sigprocmask resumed>[], 8) = 0 [pid 888] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 887] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 891] <... write resumed>) = 4 [pid 890] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 889] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 888] <... write resumed>) = 131072 [pid 891] close(3 [pid 890] <... rt_sigaction resumed>NULL, 8) = 0 [pid 891] <... close resumed>) = 0 [pid 890] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], executing program [pid 889] <... clone3 resumed> => {parent_tid=[892]}, 88) = 892 [pid 891] write(1, "executing program\n", 18 [pid 890] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 889] rt_sigprocmask(SIG_SETMASK, [], [pid 891] <... write resumed>) = 18 [pid 890] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 889] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 891] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 890] <... mmap resumed>) = 0x7fe6f87b1000 [pid 889] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 891] <... futex resumed>) = 0 [pid 890] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 889] <... futex resumed>) = 0 [pid 891] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 890] <... mprotect resumed>) = 0 [pid 889] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 891] <... rt_sigaction resumed>NULL, 8) = 0 [pid 890] rt_sigprocmask(SIG_BLOCK, ~[], [pid 891] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 890] <... rt_sigprocmask resumed>[], 8) = 0 [pid 891] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 890] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 891] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 890] <... clone3 resumed> => {parent_tid=[893]}, 88) = 893 ./strace-static-x86_64: Process 893 attached ./strace-static-x86_64: Process 892 attached [pid 891] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 890] rt_sigprocmask(SIG_SETMASK, [], [pid 888] munmap(0x7fe6f03b1000, 138412032 [pid 887] <... write resumed>) = 131072 [pid 892] set_robust_list(0x7fe6f87d19a0, 24 [pid 891] <... mprotect resumed>) = 0 [pid 890] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 888] <... munmap resumed>) = 0 [pid 887] munmap(0x7fe6f03b1000, 138412032 [pid 893] set_robust_list(0x7fe6f87d19a0, 24 [pid 891] rt_sigprocmask(SIG_BLOCK, ~[], [pid 890] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 888] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 893] <... set_robust_list resumed>) = 0 [pid 892] <... set_robust_list resumed>) = 0 [pid 891] <... rt_sigprocmask resumed>[], 8) = 0 [pid 890] <... futex resumed>) = 0 [pid 887] <... munmap resumed>) = 0 [pid 893] rt_sigprocmask(SIG_SETMASK, [], [pid 892] rt_sigprocmask(SIG_SETMASK, [], [pid 891] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 890] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 888] <... openat resumed>) = 7 [pid 887] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 893] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 892] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 888] ioctl(7, LOOP_SET_FD, 6 [pid 887] <... openat resumed>) = 7 [pid 891] <... clone3 resumed> => {parent_tid=[894]}, 88) = 894 [pid 888] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 887] ioctl(7, LOOP_SET_FD, 6 [pid 891] rt_sigprocmask(SIG_SETMASK, [], [pid 888] ioctl(7, LOOP_CLR_FD [pid 887] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 892] memfd_create("syzkaller", 0 [pid 891] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 888] <... ioctl resumed>) = 0 [pid 887] ioctl(7, LOOP_CLR_FD [pid 893] memfd_create("syzkaller", 0 [pid 891] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 887] <... ioctl resumed>) = 0 [pid 893] <... memfd_create resumed>) = 3 [pid 892] <... memfd_create resumed>) = 3 [pid 891] <... futex resumed>) = 0 [pid 891] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 893] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 892] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 894 attached [pid 894] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 894] rt_sigprocmask(SIG_SETMASK, [], [pid 893] <... mmap resumed>) = 0x7fe6f03b1000 [pid 892] <... mmap resumed>) = 0x7fe6f03b1000 [pid 894] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 894] memfd_create("syzkaller", 0 [pid 888] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 888] close(7 [pid 894] <... memfd_create resumed>) = 3 [pid 893] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 892] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 888] <... close resumed>) = 0 [pid 887] ioctl(7, LOOP_SET_FD, 6 [pid 888] close(6 [pid 887] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 888] <... close resumed>) = 0 [pid 887] close(7 [pid 894] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 893] <... write resumed>) = 262144 [pid 892] <... write resumed>) = 262144 [pid 888] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 887] <... close resumed>) = 0 [pid 894] <... mmap resumed>) = 0x7fe6f03b1000 [pid 887] close(6 [pid 888] <... futex resumed>) = 1 [pid 885] <... futex resumed>) = 0 [pid 894] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 888] mknod(0x20000000, 000 [pid 887] <... close resumed>) = 0 [pid 885] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 888] <... mknod resumed>) = -1 EEXIST (File exists) [pid 887] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 885] <... futex resumed>) = 0 [pid 888] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 887] <... futex resumed>) = 1 [pid 886] <... futex resumed>) = 0 [pid 885] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 893] munmap(0x7fe6f03b1000, 138412032 [pid 892] munmap(0x7fe6f03b1000, 138412032 [pid 888] <... futex resumed>) = 0 [pid 887] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 886] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 885] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 888] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 887] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 886] <... futex resumed>) = 0 [pid 885] exit_group(0 [pid 887] mknod(0x20000000, 000 [pid 888] <... futex resumed>) = ? [pid 886] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 885] <... exit_group resumed>) = ? [pid 888] +++ exited with 0 +++ [pid 887] <... mknod resumed>) = -1 EEXIST (File exists) [pid 894] <... write resumed>) = 262144 [pid 887] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 885] +++ exited with 0 +++ [pid 887] <... futex resumed>) = 1 [pid 886] <... futex resumed>) = 0 [pid 887] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=885, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 886] exit_group(0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 886] <... exit_group resumed>) = ? [pid 887] <... futex resumed>) = ? [pid 894] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 894] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 894] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 894] ioctl(4, LOOP_CLR_FD) = 0 [pid 893] <... munmap resumed>) = 0 [pid 887] +++ exited with 0 +++ [pid 886] +++ exited with 0 +++ [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=886, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 893] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 893] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 893] ioctl(4, LOOP_CLR_FD) = 0 [pid 892] <... munmap resumed>) = 0 [pid 892] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 892] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 892] ioctl(4, LOOP_CLR_FD) = 0 [pid 894] ioctl(4, LOOP_SET_FD, 3 [pid 893] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 893] close(4) = 0 [pid 893] close(3) = 0 [pid 894] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 894] close(4) = 0 [pid 894] close(3) = 0 [pid 893] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 890] <... futex resumed>) = 0 [pid 890] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 890] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 893] <... futex resumed>) = 1 [pid 893] chdir("./file0" [pid 892] ioctl(4, LOOP_SET_FD, 3 [pid 893] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 892] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 893] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 892] close(4 [pid 890] <... futex resumed>) = 0 [pid 890] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 890] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 892] <... close resumed>) = 0 [pid 893] <... futex resumed>) = 1 [pid 893] creat("./bus", 000) = 3 [pid 892] close(3) = 0 [pid 893] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 890] <... futex resumed>) = 0 [pid 890] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 890] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 893] <... futex resumed>) = 1 [pid 893] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 893] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 890] <... futex resumed>) = 0 [pid 890] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 890] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 894] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 893] <... futex resumed>) = 1 [pid 893] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 891] <... futex resumed>) = 0 [pid 891] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 891] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 894] <... futex resumed>) = 1 [pid 894] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 894] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 891] <... futex resumed>) = 0 [pid 891] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 891] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 894] <... futex resumed>) = 1 [pid 893] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 305] <... restart_syscall resumed>) = 0 [pid 894] creat("./bus", 000 [pid 893] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 894] <... creat resumed>) = 3 [pid 893] <... futex resumed>) = 1 [pid 890] <... futex resumed>) = 0 [pid 894] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 893] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 890] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 894] <... futex resumed>) = 1 [pid 893] <... open resumed>) = 5 [pid 891] <... futex resumed>) = 0 [pid 890] <... futex resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 894] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 893] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 892] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 891] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 890] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... restart_syscall resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 894] <... openat resumed>) = 4 [pid 893] <... futex resumed>) = 0 [pid 892] <... futex resumed>) = 1 [pid 891] <... futex resumed>) = 0 [pid 890] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 889] <... futex resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 894] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 893] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 892] chdir("./file0" [pid 891] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 890] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 889] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... ioctl resumed>) = 0 [pid 894] <... futex resumed>) = 0 [pid 893] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 892] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 891] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 890] <... futex resumed>) = 0 [pid 889] <... futex resumed>) = 0 [pid 305] close(3 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 894] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 893] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 892] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 891] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 890] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 889] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... close resumed>) = 0 [pid 303] <... openat resumed>) = 3 [pid 894] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 893] <... mmap resumed>) = 0x20000000 [pid 892] <... futex resumed>) = 0 [pid 891] <... futex resumed>) = 0 [pid 889] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] ioctl(3, LOOP_CLR_FD [pid 894] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 893] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 892] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 891] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 889] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... ioctl resumed>) = 0 [pid 894] <... futex resumed>) = 0 [pid 893] <... futex resumed>) = 1 [pid 892] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 891] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 890] <... futex resumed>) = 0 [pid 889] <... futex resumed>) = 0 [pid 303] close(3 [pid 894] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 893] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 891] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 890] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 889] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... close resumed>) = 0 [pid 894] <... open resumed>) = 5 [pid 893] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 891] <... futex resumed>) = 0 [pid 890] <... futex resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 894] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 893] memfd_create("syzkaller", 0 [pid 891] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 890] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 894] <... futex resumed>) = 0 [pid 893] <... memfd_create resumed>) = 6 [pid 891] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 896 [pid 894] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 893] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 891] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 894] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 893] <... mmap resumed>) = 0x7fe6f03b1000 [pid 891] <... futex resumed>) = 0 [pid 894] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 893] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 892] creat("./bus", 000 [pid 891] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 895 [pid 894] <... mmap resumed>) = 0x20000000 [pid 893] <... write resumed>) = 131072 [pid 892] <... creat resumed>) = 3 [pid 894] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 892] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 894] <... futex resumed>) = 1 [pid 893] munmap(0x7fe6f03b1000, 138412032 [pid 891] <... futex resumed>) = 0 [pid 894] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 893] <... munmap resumed>) = 0 [pid 892] <... futex resumed>) = 1 [pid 891] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 889] <... futex resumed>) = 0 [pid 894] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 893] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 892] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 891] <... futex resumed>) = 0 [pid 889] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 896 attached [pid 894] memfd_create("syzkaller", 0 [pid 893] <... openat resumed>) = 7 [pid 892] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 891] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 889] <... futex resumed>) = 0 [pid 896] set_robust_list(0x5555636e06a0, 24 [pid 894] <... memfd_create resumed>) = 6 [pid 893] ioctl(7, LOOP_SET_FD, 6 [pid 892] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 889] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 894] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 896] <... set_robust_list resumed>) = 0 [pid 894] <... mmap resumed>) = 0x7fe6f03b1000 [pid 893] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 892] <... openat resumed>) = 4 [pid 896] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 894] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 893] ioctl(7, LOOP_CLR_FD [pid 894] munmap(0x7fe6f03b1000, 138412032 [pid 893] <... ioctl resumed>) = 0 [pid 894] <... munmap resumed>) = 0 [pid 894] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 894] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 894] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 895 attached [pid 893] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 893] close(7) = 0 [pid 893] close(6 [pid 896] <... prctl resumed>) = 0 [pid 893] <... close resumed>) = 0 [pid 892] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 893] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 892] <... futex resumed>) = 1 [pid 894] ioctl(7, LOOP_SET_FD, 6 [pid 893] <... futex resumed>) = 1 [pid 890] <... futex resumed>) = 0 [pid 892] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 889] <... futex resumed>) = 0 [pid 895] set_robust_list(0x5555636e06a0, 24 [pid 894] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 893] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 890] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 889] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 895] <... set_robust_list resumed>) = 0 [pid 894] close(7 [pid 893] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 892] <... futex resumed>) = 0 [pid 890] <... futex resumed>) = 0 [pid 889] <... futex resumed>) = 1 [pid 896] setpgid(0, 0 [pid 895] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 894] <... close resumed>) = 0 [pid 893] mknod(0x20000000, 000 [pid 892] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 890] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 889] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 896] <... setpgid resumed>) = 0 [pid 895] <... prctl resumed>) = 0 [pid 894] close(6 [pid 893] <... mknod resumed>) = -1 EEXIST (File exists) [pid 895] setpgid(0, 0 [pid 894] <... close resumed>) = 0 [pid 893] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 895] <... setpgid resumed>) = 0 [pid 894] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 893] <... futex resumed>) = 1 [pid 890] <... futex resumed>) = 0 [pid 896] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 895] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 894] <... futex resumed>) = 1 [pid 893] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 891] <... futex resumed>) = 0 [pid 890] exit_group(0 [pid 896] <... openat resumed>) = 3 [pid 895] <... openat resumed>) = 3 [pid 894] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 893] <... futex resumed>) = ? [pid 892] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 891] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 890] <... exit_group resumed>) = ? [pid 896] write(3, "1000", 4 [pid 895] write(3, "1000", 4 [pid 894] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 893] +++ exited with 0 +++ [pid 892] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 891] <... futex resumed>) = 0 [pid 890] +++ exited with 0 +++ [pid 896] <... write resumed>) = 4 [pid 895] <... write resumed>) = 4 [pid 894] mknod(0x20000000, 000 [pid 892] <... futex resumed>) = 1 [pid 891] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 889] <... futex resumed>) = 0 [pid 896] close(3 [pid 895] close(3 [pid 894] <... mknod resumed>) = -1 EEXIST (File exists) [pid 892] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 889] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=890, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 896] <... close resumed>) = 0 [pid 895] <... close resumed>) = 0 [pid 894] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000executing program executing program [pid 892] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 889] <... futex resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 896] write(1, "executing program\n", 18 [pid 895] write(1, "executing program\n", 18 [pid 894] <... futex resumed>) = 1 [pid 892] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 891] <... futex resumed>) = 0 [pid 889] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 896] <... write resumed>) = 18 [pid 895] <... write resumed>) = 18 [pid 894] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 892] <... open resumed>) = 5 [pid 891] exit_group(0 [pid 896] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 895] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 894] <... futex resumed>) = ? [pid 892] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 891] <... exit_group resumed>) = ? [pid 896] <... futex resumed>) = 0 [pid 895] <... futex resumed>) = 0 [pid 894] +++ exited with 0 +++ [pid 892] <... futex resumed>) = 1 [pid 891] +++ exited with 0 +++ [pid 889] <... futex resumed>) = 0 [pid 896] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 895] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 892] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 889] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 896] <... rt_sigaction resumed>NULL, 8) = 0 [pid 895] <... rt_sigaction resumed>NULL, 8) = 0 [pid 892] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 889] <... futex resumed>) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=891, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 896] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 895] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 889] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... restart_syscall resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 892] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 896] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 895] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 896] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 895] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 892] <... mmap resumed>) = 0x20000000 [pid 896] <... mmap resumed>) = 0x7fe6f87b1000 [pid 895] <... mmap resumed>) = 0x7fe6f87b1000 [pid 892] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 896] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 895] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 892] <... futex resumed>) = 1 [pid 889] <... futex resumed>) = 0 [pid 896] <... mprotect resumed>) = 0 [pid 895] <... mprotect resumed>) = 0 [pid 892] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 889] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 896] rt_sigprocmask(SIG_BLOCK, ~[], [pid 895] rt_sigprocmask(SIG_BLOCK, ~[], [pid 892] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 889] <... futex resumed>) = 0 [pid 896] <... rt_sigprocmask resumed>[], 8) = 0 [pid 895] <... rt_sigprocmask resumed>[], 8) = 0 [pid 306] <... openat resumed>) = 3 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 896] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 895] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 892] memfd_create("syzkaller", 0 [pid 889] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 306] ioctl(3, LOOP_CLR_FD [pid 892] <... memfd_create resumed>) = 6 [pid 306] <... ioctl resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 896] <... clone3 resumed> => {parent_tid=[897]}, 88) = 897 [pid 895] <... clone3 resumed> => {parent_tid=[898]}, 88) = 898 [pid 892] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 306] close(3 [pid 302] ioctl(3, LOOP_CLR_FD [pid 896] rt_sigprocmask(SIG_SETMASK, [], [pid 895] rt_sigprocmask(SIG_SETMASK, [], [pid 892] <... mmap resumed>) = 0x7fe6f03b1000 [pid 306] <... close resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 896] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 895] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 895] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 895] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 897 attached [pid 896] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 892] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 302] close(3 [pid 896] <... futex resumed>) = 0 [pid 897] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 892] <... write resumed>) = 131072 [pid 897] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 896] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 892] munmap(0x7fe6f03b1000, 138412032 [pid 302] <... close resumed>) = 0 [pid 892] <... munmap resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 899 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 892] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 897] memfd_create("syzkaller", 0 [pid 892] <... openat resumed>) = 7 [pid 892] ioctl(7, LOOP_SET_FD, 6 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 900 [pid 892] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 892] ioctl(7, LOOP_CLR_FD) = 0 [pid 897] <... memfd_create resumed>) = 3 [pid 897] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 ./strace-static-x86_64: Process 898 attached [pid 897] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 892] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 892] close(7) = 0 [pid 892] close(6./strace-static-x86_64: Process 899 attached [pid 899] set_robust_list(0x5555636e06a0, 24 [pid 892] <... close resumed>) = 0 [pid 892] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 889] <... futex resumed>) = 0 [pid 892] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 889] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 892] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 889] <... futex resumed>) = 0 [pid 892] mknod(0x20000000, 000 [pid 889] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 892] <... mknod resumed>) = -1 EEXIST (File exists) [pid 892] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 889] <... futex resumed>) = 0 [pid 892] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 889] exit_group(0 [pid 892] <... futex resumed>) = ? [pid 889] <... exit_group resumed>) = ? [pid 892] +++ exited with 0 +++ [pid 899] <... set_robust_list resumed>) = 0 [pid 899] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 899] setpgid(0, 0 [pid 889] +++ exited with 0 +++ [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=889, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 899] <... setpgid resumed>) = 0 [pid 899] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 899] write(3, "1000", 4) = 4 ./strace-static-x86_64: Process 900 attached [pid 898] set_robust_list(0x7fe6f87d19a0, 24 [pid 899] close(3) = 0 [pid 899] write(1, "executing program\n", 18executing program ) = 18 [pid 899] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 899] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 899] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 899] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 900] set_robust_list(0x5555636e06a0, 24 [pid 898] <... set_robust_list resumed>) = 0 [pid 900] <... set_robust_list resumed>) = 0 [pid 898] rt_sigprocmask(SIG_SETMASK, [], [pid 900] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 898] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 900] <... prctl resumed>) = 0 [pid 898] memfd_create("syzkaller", 0 [pid 900] setpgid(0, 0) = 0 [pid 898] <... memfd_create resumed>) = 3 [pid 899] <... mmap resumed>) = 0x7fe6f87b1000 [pid 898] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 900] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 898] <... mmap resumed>) = 0x7fe6f03b1000 [pid 899] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 900] <... openat resumed>) = 3 [pid 899] <... mprotect resumed>) = 0 [pid 899] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 899] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 897] <... write resumed>) = 262144 [pid 899] <... clone3 resumed> => {parent_tid=[901]}, 88) = 901 [pid 899] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 899] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 899] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 897] munmap(0x7fe6f03b1000, 138412032 [pid 898] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 900] write(3, "1000", 4 [pid 897] <... munmap resumed>) = 0 [pid 900] <... write resumed>) = 4 executing program [pid 897] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 897] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 897] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 901 attached [pid 901] set_robust_list(0x7fe6f87d19a0, 24 [pid 900] close(3 [pid 898] <... write resumed>) = 262144 [pid 900] <... close resumed>) = 0 [pid 898] munmap(0x7fe6f03b1000, 138412032 [pid 900] write(1, "executing program\n", 18) = 18 [pid 898] <... munmap resumed>) = 0 [pid 900] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 898] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 900] <... futex resumed>) = 0 [pid 900] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 898] <... openat resumed>) = 4 [pid 900] <... rt_sigaction resumed>NULL, 8) = 0 [pid 900] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 898] ioctl(4, LOOP_SET_FD, 3 [pid 900] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 900] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 897] ioctl(4, LOOP_SET_FD, 3 [pid 898] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 897] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] <... restart_syscall resumed>) = 0 [pid 897] close(4) = 0 [pid 897] close(3 [pid 900] <... mmap resumed>) = 0x7fe6f87b1000 [pid 898] ioctl(4, LOOP_CLR_FD [pid 897] <... close resumed>) = 0 [pid 900] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 898] <... ioctl resumed>) = 0 [pid 900] <... mprotect resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 900] rt_sigprocmask(SIG_BLOCK, ~[], [pid 897] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... openat resumed>) = 3 [pid 900] <... rt_sigprocmask resumed>[], 8) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 900] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 304] <... ioctl resumed>) = 0 [pid 897] <... futex resumed>) = 1 [pid 896] <... futex resumed>) = 0 [pid 304] close(3 [pid 900] <... clone3 resumed> => {parent_tid=[902]}, 88) = 902 [pid 896] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 900] rt_sigprocmask(SIG_SETMASK, [], [pid 896] <... futex resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 900] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 896] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 900] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 897] chdir("./file0" [pid 900] <... futex resumed>) = 0 [pid 897] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 900] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 898] ioctl(4, LOOP_SET_FD, 3 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 903 [pid 898] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 898] close(4) = 0 [pid 897] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 898] close(3 [pid 897] <... futex resumed>) = 1 [pid 896] <... futex resumed>) = 0 [pid 897] creat("./bus", 000 [pid 896] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 898] <... close resumed>) = 0 [pid 897] <... creat resumed>) = 3 [pid 896] <... futex resumed>) = 0 [pid 898] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 897] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 896] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 898] <... futex resumed>) = 1 [pid 897] <... futex resumed>) = 0 [pid 896] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 895] <... futex resumed>) = 0 [pid 898] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 897] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 896] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 895] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 898] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 897] <... openat resumed>) = 4 [pid 896] <... futex resumed>) = 0 [pid 895] <... futex resumed>) = 0 ./strace-static-x86_64: Process 903 attached [pid 898] chdir("./file0" [pid 897] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 896] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 895] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 903] set_robust_list(0x5555636e06a0, 24 [pid 901] <... set_robust_list resumed>) = 0 [pid 898] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 897] <... futex resumed>) = 0 [pid 896] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 901] rt_sigprocmask(SIG_SETMASK, [], [pid 897] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 896] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 901] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 896] <... futex resumed>) = 0 [pid 901] memfd_create("syzkaller", 0 [pid 896] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 901] <... memfd_create resumed>) = 3 [pid 901] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 903] <... set_robust_list resumed>) = 0 [pid 901] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 898] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 897] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 903] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 898] <... futex resumed>) = 1 [pid 897] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 895] <... futex resumed>) = 0 [pid 903] <... prctl resumed>) = 0 [pid 898] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 897] <... futex resumed>) = 1 [pid 896] <... futex resumed>) = 0 [pid 895] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 902 attached [pid 903] setpgid(0, 0 [pid 898] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 897] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 896] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 895] <... futex resumed>) = 0 [pid 903] <... setpgid resumed>) = 0 [pid 898] creat("./bus", 000 [pid 897] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 896] <... futex resumed>) = 0 [pid 895] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 903] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 902] set_robust_list(0x7fe6f87d19a0, 24 [pid 898] <... creat resumed>) = 3 [pid 897] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 896] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 903] <... openat resumed>) = 3 [pid 902] <... set_robust_list resumed>) = 0 [pid 901] <... write resumed>) = 262144 [pid 898] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 897] <... open resumed>) = 5 [pid 903] write(3, "1000", 4 [pid 902] rt_sigprocmask(SIG_SETMASK, [], [pid 898] <... futex resumed>) = 1 [pid 897] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 895] <... futex resumed>) = 0 [pid 903] <... write resumed>) = 4 [pid 902] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 898] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 897] <... futex resumed>) = 1 [pid 896] <... futex resumed>) = 0 [pid 895] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 903] close(3 [pid 902] memfd_create("syzkaller", 0 [pid 898] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 897] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 896] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 895] <... futex resumed>) = 0 [pid 903] <... close resumed>) = 0 [pid 902] <... memfd_create resumed>) = 3 [pid 901] munmap(0x7fe6f03b1000, 138412032 [pid 898] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 897] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 896] <... futex resumed>) = 0 [pid 895] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}executing program [pid 903] write(1, "executing program\n", 18 [pid 902] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 901] <... munmap resumed>) = 0 [pid 898] <... openat resumed>) = 4 [pid 897] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 896] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 903] <... write resumed>) = 18 [pid 902] <... mmap resumed>) = 0x7fe6f03b1000 [pid 901] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 898] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 897] <... mmap resumed>) = 0x20000000 [pid 903] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 901] <... openat resumed>) = 4 [pid 897] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 901] ioctl(4, LOOP_SET_FD, 3 [pid 897] <... futex resumed>) = 1 [pid 896] <... futex resumed>) = 0 [pid 901] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 897] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 896] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 901] ioctl(4, LOOP_CLR_FD [pid 897] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 896] <... futex resumed>) = 0 [pid 903] <... futex resumed>) = 0 [pid 902] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 901] <... ioctl resumed>) = 0 [pid 898] <... futex resumed>) = 1 [pid 897] memfd_create("syzkaller", 0 [pid 896] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 895] <... futex resumed>) = 0 [pid 903] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 897] <... memfd_create resumed>) = 6 [pid 895] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 897] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 895] <... futex resumed>) = 0 [pid 897] <... mmap resumed>) = 0x7fe6f03b1000 [pid 895] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 903] <... rt_sigaction resumed>NULL, 8) = 0 [pid 898] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 897] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 903] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 901] ioctl(4, LOOP_SET_FD, 3 [pid 897] <... write resumed>) = 131072 [pid 903] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 901] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 897] munmap(0x7fe6f03b1000, 138412032 [pid 903] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 901] close(4 [pid 897] <... munmap resumed>) = 0 [pid 903] <... mmap resumed>) = 0x7fe6f87b1000 [pid 902] <... write resumed>) = 262144 [pid 901] <... close resumed>) = 0 [pid 897] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 903] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 902] munmap(0x7fe6f03b1000, 138412032 [pid 901] close(3 [pid 897] <... openat resumed>) = 7 [pid 903] <... mprotect resumed>) = 0 [pid 902] <... munmap resumed>) = 0 [pid 901] <... close resumed>) = 0 [pid 898] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 897] ioctl(7, LOOP_SET_FD, 6 [pid 903] rt_sigprocmask(SIG_BLOCK, ~[], [pid 902] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 901] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 898] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 897] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 903] <... rt_sigprocmask resumed>[], 8) = 0 [pid 902] <... openat resumed>) = 4 [pid 901] <... futex resumed>) = 1 [pid 899] <... futex resumed>) = 0 [pid 898] <... futex resumed>) = 1 [pid 897] ioctl(7, LOOP_CLR_FD [pid 895] <... futex resumed>) = 0 [pid 903] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 902] ioctl(4, LOOP_SET_FD, 3 [pid 901] chdir("./file0" [pid 899] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 898] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 897] <... ioctl resumed>) = 0 [pid 895] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 902] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 901] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 899] <... futex resumed>) = 0 [pid 898] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 895] <... futex resumed>) = 0 [pid 903] <... clone3 resumed> => {parent_tid=[904]}, 88) = 904 [pid 902] ioctl(4, LOOP_CLR_FD [pid 901] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 899] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 898] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 895] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 903] rt_sigprocmask(SIG_SETMASK, [], [pid 902] <... ioctl resumed>) = 0 [pid 901] <... futex resumed>) = 0 [pid 899] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 898] <... open resumed>) = 5 [pid 903] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 901] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 899] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 898] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 903] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 901] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 899] <... futex resumed>) = 0 [pid 898] <... futex resumed>) = 1 [pid 897] ioctl(7, LOOP_SET_FD, 6 [pid 895] <... futex resumed>) = 0 [pid 903] <... futex resumed>) = 0 [pid 901] creat("./bus", 000 [pid 899] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 898] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 897] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 895] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 903] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 901] <... creat resumed>) = 3 [pid 898] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 897] close(7 [pid 895] <... futex resumed>) = 0 [pid 902] ioctl(4, LOOP_SET_FD, 3 [pid 901] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 898] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 897] <... close resumed>) = 0 [pid 895] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 902] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 901] <... futex resumed>) = 1 [pid 899] <... futex resumed>) = 0 [pid 898] <... mmap resumed>) = 0x20000000 [pid 897] close(6 [pid 902] close(4 [pid 901] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 899] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 898] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 897] <... close resumed>) = 0 [pid 902] <... close resumed>) = 0 [pid 901] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 899] <... futex resumed>) = 0 [pid 898] <... futex resumed>) = 1 [pid 897] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 895] <... futex resumed>) = 0 [pid 902] close(3 [pid 901] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 899] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 898] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 897] <... futex resumed>) = 1 [pid 896] <... futex resumed>) = 0 [pid 895] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 901] <... openat resumed>) = 4 [pid 897] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 896] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 895] <... futex resumed>) = 0 [pid 902] <... close resumed>) = 0 [pid 901] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 898] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 897] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 896] <... futex resumed>) = 0 [pid 895] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 902] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 901] <... futex resumed>) = 1 [pid 899] <... futex resumed>) = 0 [pid 898] memfd_create("syzkaller", 0 [pid 897] mknod(0x20000000, 000 [pid 896] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 904 attached [pid 902] <... futex resumed>) = 1 [pid 901] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 900] <... futex resumed>) = 0 [pid 899] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 898] <... memfd_create resumed>) = 6 [pid 897] <... mknod resumed>) = -1 EEXIST (File exists) [pid 904] set_robust_list(0x7fe6f87d19a0, 24 [pid 902] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 901] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 900] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 899] <... futex resumed>) = 0 [pid 898] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 897] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 904] <... set_robust_list resumed>) = 0 [pid 902] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 901] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 900] <... futex resumed>) = 0 [pid 899] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 898] <... mmap resumed>) = 0x7fe6f03b1000 [pid 897] <... futex resumed>) = 1 [pid 896] <... futex resumed>) = 0 [pid 904] rt_sigprocmask(SIG_SETMASK, [], [pid 902] chdir("./file0" [pid 901] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 900] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 897] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 896] exit_group(0 [pid 901] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 897] <... futex resumed>) = ? [pid 896] <... exit_group resumed>) = ? [pid 904] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 902] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 901] <... futex resumed>) = 1 [pid 899] <... futex resumed>) = 0 [pid 898] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 897] +++ exited with 0 +++ [pid 896] +++ exited with 0 +++ [pid 904] memfd_create("syzkaller", 0 [pid 902] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 901] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 899] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=896, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 904] <... memfd_create resumed>) = 3 [pid 902] <... futex resumed>) = 1 [pid 901] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 900] <... futex resumed>) = 0 [pid 899] <... futex resumed>) = 0 [pid 898] <... write resumed>) = 131072 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 904] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 902] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 901] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 900] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 899] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 898] munmap(0x7fe6f03b1000, 138412032 [pid 904] <... mmap resumed>) = 0x7fe6f03b1000 [pid 902] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 901] <... open resumed>) = 5 [pid 900] <... futex resumed>) = 0 [pid 902] creat("./bus", 000 [pid 901] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 900] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 898] <... munmap resumed>) = 0 [pid 902] <... creat resumed>) = 3 [pid 901] <... futex resumed>) = 1 [pid 899] <... futex resumed>) = 0 [pid 898] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 902] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 901] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 899] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 902] <... futex resumed>) = 1 [pid 901] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 900] <... futex resumed>) = 0 [pid 899] <... futex resumed>) = 0 [pid 898] <... openat resumed>) = 7 [pid 303] <... restart_syscall resumed>) = 0 [pid 902] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 901] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 900] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 899] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 898] ioctl(7, LOOP_SET_FD, 6 [pid 904] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 902] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 901] <... mmap resumed>) = 0x20000000 [pid 900] <... futex resumed>) = 0 [pid 898] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 902] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 901] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 900] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 898] ioctl(7, LOOP_CLR_FD [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 902] <... openat resumed>) = 4 [pid 901] <... futex resumed>) = 1 [pid 899] <... futex resumed>) = 0 [pid 898] <... ioctl resumed>) = 0 [pid 303] <... openat resumed>) = 3 [pid 902] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 901] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 899] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] ioctl(3, LOOP_CLR_FD [pid 904] <... write resumed>) = 262144 [pid 902] <... futex resumed>) = 1 [pid 901] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 900] <... futex resumed>) = 0 [pid 899] <... futex resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 902] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 901] memfd_create("syzkaller", 0 [pid 900] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 899] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 303] close(3 [pid 904] munmap(0x7fe6f03b1000, 138412032 [pid 902] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 901] <... memfd_create resumed>) = 6 [pid 900] <... futex resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 904] <... munmap resumed>) = 0 [pid 902] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 901] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 900] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 904] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 902] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 901] <... mmap resumed>) = 0x7fe6f03b1000 [pid 898] ioctl(7, LOOP_SET_FD, 6 [pid 904] <... openat resumed>) = 4 [pid 902] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 901] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 898] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 905 [pid 904] ioctl(4, LOOP_SET_FD, 3 [pid 902] <... futex resumed>) = 1 [pid 901] <... write resumed>) = 131072 [pid 900] <... futex resumed>) = 0 [pid 898] close(7 [pid 904] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 902] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 901] munmap(0x7fe6f03b1000, 138412032 [pid 900] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 898] <... close resumed>) = 0 [pid 904] ioctl(4, LOOP_CLR_FD [pid 902] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 901] <... munmap resumed>) = 0 [pid 900] <... futex resumed>) = 0 [pid 898] close(6 [pid 904] <... ioctl resumed>) = 0 [pid 902] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 901] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 900] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 901] <... openat resumed>) = 7 [pid 902] <... open resumed>) = 5 [pid 901] ioctl(7, LOOP_SET_FD, 6 [pid 898] <... close resumed>) = 0 [pid 902] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 901] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 898] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 902] <... futex resumed>) = 1 [pid 901] ioctl(7, LOOP_CLR_FD [pid 900] <... futex resumed>) = 0 [pid 898] <... futex resumed>) = 1 [pid 895] <... futex resumed>) = 0 [pid 902] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 901] <... ioctl resumed>) = 0 [pid 900] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 898] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 895] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 904] ioctl(4, LOOP_SET_FD, 3 [pid 902] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 900] <... futex resumed>) = 0 [pid 898] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 895] <... futex resumed>) = 0 [pid 904] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 902] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 900] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 898] mknod(0x20000000, 000 [pid 895] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 904] close(4 [pid 902] <... mmap resumed>) = 0x20000000 [pid 898] <... mknod resumed>) = -1 EEXIST (File exists) [pid 904] <... close resumed>) = 0 [pid 902] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 898] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 904] close(3 [pid 902] <... futex resumed>) = 1 [pid 900] <... futex resumed>) = 0 [pid 898] <... futex resumed>) = 1 [pid 895] <... futex resumed>) = 0 [pid 902] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 901] ioctl(7, LOOP_SET_FD, 6 [pid 900] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 898] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 895] exit_group(0 [pid 904] <... close resumed>) = 0 [pid 902] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 901] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 900] <... futex resumed>) = 0 [pid 898] <... futex resumed>) = ? [pid 895] <... exit_group resumed>) = ? [pid 904] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 902] memfd_create("syzkaller", 0 [pid 901] close(7 [pid 900] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 898] +++ exited with 0 +++ [pid 895] +++ exited with 0 +++ [pid 904] <... futex resumed>) = 1 [pid 903] <... futex resumed>) = 0 [pid 902] <... memfd_create resumed>) = 6 [pid 901] <... close resumed>) = 0 [pid 904] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 903] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 902] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 901] close(6 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=895, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 904] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 903] <... futex resumed>) = 0 [pid 902] <... mmap resumed>) = 0x7fe6f03b1000 [pid 901] <... close resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 905 attached [pid 904] chdir("./file0" [pid 903] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 901] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 905] set_robust_list(0x5555636e06a0, 24 [pid 901] <... futex resumed>) = 1 [pid 899] <... futex resumed>) = 0 [pid 905] <... set_robust_list resumed>) = 0 [pid 901] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 899] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 905] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 902] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 901] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 899] <... futex resumed>) = 0 [pid 904] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 905] <... prctl resumed>) = 0 [pid 901] mknod(0x20000000, 000 [pid 899] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 905] setpgid(0, 0 [pid 904] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 902] <... write resumed>) = 131072 [pid 901] <... mknod resumed>) = -1 EEXIST (File exists) [pid 905] <... setpgid resumed>) = 0 [pid 904] <... futex resumed>) = 1 [pid 903] <... futex resumed>) = 0 [pid 902] munmap(0x7fe6f03b1000, 138412032 [pid 901] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 905] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 904] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 903] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 902] <... munmap resumed>) = 0 [pid 901] <... futex resumed>) = 1 [pid 899] <... futex resumed>) = 0 [pid 905] <... openat resumed>) = 3 [pid 904] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 903] <... futex resumed>) = 0 [pid 902] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 901] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 899] exit_group(0 [pid 905] write(3, "1000", 4 [pid 904] creat("./bus", 000 [pid 903] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 902] <... openat resumed>) = 7 [pid 901] <... futex resumed>) = ? [pid 899] <... exit_group resumed>) = ? [pid 905] <... write resumed>) = 4 [pid 904] <... creat resumed>) = 3 [pid 902] ioctl(7, LOOP_SET_FD, 6 [pid 901] +++ exited with 0 +++ [pid 899] +++ exited with 0 +++ [pid 905] close(3 [pid 904] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 902] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] <... restart_syscall resumed>) = 0 [pid 905] <... close resumed>) = 0 [pid 904] <... futex resumed>) = 1 [pid 903] <... futex resumed>) = 0 [pid 902] ioctl(7, LOOP_CLR_FD [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=899, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 904] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 903] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 902] <... ioctl resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 903] <... futex resumed>) = 0 [pid 904] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 903] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... restart_syscall resumed>) = 0 [pid 904] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWRexecuting program [pid 905] write(1, "executing program\n", 18 [pid 904] <... openat resumed>) = 4 [pid 305] <... openat resumed>) = 3 [pid 905] <... write resumed>) = 18 [pid 904] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 905] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 905] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 905] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 904] <... futex resumed>) = 1 [pid 903] <... futex resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 305] ioctl(3, LOOP_CLR_FD [pid 905] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 904] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 903] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 902] ioctl(7, LOOP_SET_FD, 6 [pid 306] <... openat resumed>) = 3 [pid 305] <... ioctl resumed>) = 0 [pid 905] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 904] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 903] <... futex resumed>) = 0 [pid 902] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] ioctl(3, LOOP_CLR_FD [pid 305] close(3 [pid 905] <... mmap resumed>) = 0x7fe6f87b1000 [pid 904] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 903] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 902] close(7 [pid 306] <... ioctl resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 905] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 904] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 902] <... close resumed>) = 0 [pid 306] close(3 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 905] rt_sigprocmask(SIG_BLOCK, ~[], [pid 904] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 902] close(6 [pid 306] <... close resumed>) = 0 [pid 905] <... rt_sigprocmask resumed>[], 8) = 0 [pid 905] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 904] <... futex resumed>) = 1 [pid 903] <... futex resumed>) = 0 [pid 904] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 903] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 902] <... close resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 906 [pid 905] <... clone3 resumed> => {parent_tid=[907]}, 88) = 907 [pid 904] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 903] <... futex resumed>) = 0 [pid 902] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 905] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 904] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 903] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 902] <... futex resumed>) = 1 [pid 900] <... futex resumed>) = 0 [pid 905] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 904] <... open resumed>) = 5 [pid 902] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 900] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 908 [pid 905] <... futex resumed>) = 0 [pid 904] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 902] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 900] <... futex resumed>) = 0 [pid 905] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 904] <... futex resumed>) = 1 [pid 903] <... futex resumed>) = 0 [pid 902] mknod(0x20000000, 000 [pid 900] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 904] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 903] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 902] <... mknod resumed>) = -1 EEXIST (File exists) [pid 904] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 903] <... futex resumed>) = 0 [pid 902] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 904] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 903] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 902] <... futex resumed>) = 1 [pid 900] <... futex resumed>) = 0 [pid 904] <... mmap resumed>) = 0x20000000 [pid 902] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 900] exit_group(0 [pid 904] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 902] <... futex resumed>) = ? [pid 900] <... exit_group resumed>) = ? [pid 904] <... futex resumed>) = 1 [pid 903] <... futex resumed>) = 0 [pid 902] +++ exited with 0 +++ ./strace-static-x86_64: Process 906 attached [pid 906] set_robust_list(0x5555636e06a0, 24) = 0 [pid 903] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 900] +++ exited with 0 +++ [pid 904] memfd_create("syzkaller", 0 [pid 903] <... futex resumed>) = 0 [pid 906] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 904] <... memfd_create resumed>) = 6 [pid 903] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=900, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 904] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 904] <... mmap resumed>) = 0x7fe6f03b1000 ./strace-static-x86_64: Process 908 attached [pid 906] <... prctl resumed>) = 0 [pid 908] set_robust_list(0x5555636e06a0, 24 [pid 906] setpgid(0, 0 [pid 908] <... set_robust_list resumed>) = 0 [pid 906] <... setpgid resumed>) = 0 [pid 908] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 906] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 904] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 908] <... prctl resumed>) = 0 [pid 906] <... openat resumed>) = 3 [pid 908] setpgid(0, 0 [pid 906] write(3, "1000", 4 [pid 904] <... write resumed>) = 131072 [pid 908] <... setpgid resumed>) = 0 [pid 906] <... write resumed>) = 4 [pid 904] munmap(0x7fe6f03b1000, 138412032 [pid 908] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 906] close(3 [pid 904] <... munmap resumed>) = 0 [pid 908] <... openat resumed>) = 3 [pid 906] <... close resumed>) = 0 [pid 904] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 908] write(3, "1000", 4 [pid 906] write(1, "executing program\n", 18 [pid 904] <... openat resumed>) = 7 executing program ./strace-static-x86_64: Process 907 attached [pid 908] <... write resumed>) = 4 [pid 906] <... write resumed>) = 18 [pid 904] ioctl(7, LOOP_SET_FD, 6 [pid 908] close(3 [pid 906] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 908] <... close resumed>) = 0 [pid 906] <... futex resumed>) = 0 executing program [pid 908] write(1, "executing program\n", 18 [pid 906] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 908] <... write resumed>) = 18 [pid 906] <... rt_sigaction resumed>NULL, 8) = 0 [pid 908] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 906] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 908] <... futex resumed>) = 0 [pid 906] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 908] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 906] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 908] <... rt_sigaction resumed>NULL, 8) = 0 [pid 906] <... mmap resumed>) = 0x7fe6f87b1000 [pid 908] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 906] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 908] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 906] <... mprotect resumed>) = 0 [pid 908] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 906] rt_sigprocmask(SIG_BLOCK, ~[], [pid 904] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 302] <... restart_syscall resumed>) = 0 [pid 904] ioctl(7, LOOP_CLR_FD) = 0 [pid 908] <... mmap resumed>) = 0x7fe6f87b1000 [pid 906] <... rt_sigprocmask resumed>[], 8) = 0 [pid 908] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 906] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 908] <... mprotect resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 907] set_robust_list(0x7fe6f87d19a0, 24 [pid 302] ioctl(3, LOOP_CLR_FD [pid 908] rt_sigprocmask(SIG_BLOCK, ~[], [pid 907] <... set_robust_list resumed>) = 0 [pid 906] <... clone3 resumed> => {parent_tid=[909]}, 88) = 909 [pid 302] <... ioctl resumed>) = 0 [pid 907] rt_sigprocmask(SIG_SETMASK, [], [pid 302] close(3 [pid 907] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 904] ioctl(7, LOOP_SET_FD, 6 [pid 302] <... close resumed>) = 0 [pid 904] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 904] close(7 [pid 908] <... rt_sigprocmask resumed>[], 8) = 0 [pid 906] rt_sigprocmask(SIG_SETMASK, [], [pid 908] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 907] memfd_create("syzkaller", 0 [pid 906] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 904] <... close resumed>) = 0 [pid 906] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 904] close(6 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 910 [pid 908] <... clone3 resumed> => {parent_tid=[911]}, 88) = 911 [pid 907] <... memfd_create resumed>) = 3 [pid 906] <... futex resumed>) = 0 [pid 908] rt_sigprocmask(SIG_SETMASK, [], [pid 907] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 906] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 904] <... close resumed>) = 0 [pid 908] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 904] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 908] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 907] <... mmap resumed>) = 0x7fe6f03b1000 [pid 904] <... futex resumed>) = 1 [pid 903] <... futex resumed>) = 0 [pid 908] <... futex resumed>) = 0 [pid 904] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 903] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 908] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 904] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 903] <... futex resumed>) = 0 [pid 904] mknod(0x20000000, 000 [pid 903] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 904] <... mknod resumed>) = -1 EEXIST (File exists) [pid 904] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 903] <... futex resumed>) = 0 [pid 904] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 903] exit_group(0 [pid 904] <... futex resumed>) = ? [pid 903] <... exit_group resumed>) = ? [pid 904] +++ exited with 0 +++ ./strace-static-x86_64: Process 911 attached [pid 911] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 903] +++ exited with 0 +++ [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=903, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 911] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 907] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 911] memfd_create("syzkaller", 0) = 3 [pid 911] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 911] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 911] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 911] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 911] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 911] ioctl(4, LOOP_CLR_FD [pid 304] <... restart_syscall resumed>) = 0 [pid 911] <... ioctl resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 304] ioctl(3, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 909 attached [pid 907] <... write resumed>) = 262144 [pid 304] close(3./strace-static-x86_64: Process 910 attached [pid 909] set_robust_list(0x7fe6f87d19a0, 24 [pid 907] munmap(0x7fe6f03b1000, 138412032 [pid 304] <... close resumed>) = 0 [pid 910] set_robust_list(0x5555636e06a0, 24 [pid 909] <... set_robust_list resumed>) = 0 [pid 910] <... set_robust_list resumed>) = 0 [pid 909] rt_sigprocmask(SIG_SETMASK, [], [pid 907] <... munmap resumed>) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 910] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 907] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 909] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 910] <... prctl resumed>) = 0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 912 [pid 907] <... openat resumed>) = 4 [pid 909] memfd_create("syzkaller", 0 [pid 907] ioctl(4, LOOP_SET_FD, 3 [pid 910] setpgid(0, 0 [pid 909] <... memfd_create resumed>) = 3 [pid 907] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 910] <... setpgid resumed>) = 0 [pid 909] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 907] ioctl(4, LOOP_CLR_FD [pid 910] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 909] <... mmap resumed>) = 0x7fe6f03b1000 [pid 907] <... ioctl resumed>) = 0 [pid 910] <... openat resumed>) = 3 [pid 911] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 911] close(4) = 0 [pid 911] close(3) = 0 [pid 911] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 910] write(3, "1000", 4 [pid 909] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 910] <... write resumed>) = 4 [pid 910] close(3) = 0 [pid 910] write(1, "executing program\n", 18executing program [pid 908] <... futex resumed>) = 0 [pid 908] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 908] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 910] <... write resumed>) = 18 [pid 909] <... write resumed>) = 262144 [pid 910] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 909] munmap(0x7fe6f03b1000, 138412032 [pid 910] <... futex resumed>) = 0 [pid 907] ioctl(4, LOOP_SET_FD, 3 [pid 910] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 909] <... munmap resumed>) = 0 [pid 907] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 910] <... rt_sigaction resumed>NULL, 8) = 0 [pid 909] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 907] close(4 [pid 910] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 907] <... close resumed>) = 0 [pid 910] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 909] <... openat resumed>) = 4 [pid 907] close(3 [pid 910] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 909] ioctl(4, LOOP_SET_FD, 3 [pid 911] <... futex resumed>) = 1 [pid 911] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 910] <... mmap resumed>) = 0x7fe6f87b1000 [pid 909] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 907] <... close resumed>) = 0 [pid 910] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 909] ioctl(4, LOOP_CLR_FD [pid 907] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 910] <... mprotect resumed>) = 0 [pid 909] <... ioctl resumed>) = 0 [pid 907] <... futex resumed>) = 1 [pid 905] <... futex resumed>) = 0 [pid 910] rt_sigprocmask(SIG_BLOCK, ~[], [pid 907] chdir("./file0" [pid 905] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 910] <... rt_sigprocmask resumed>[], 8) = 0 [pid 907] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 905] <... futex resumed>) = 0 [pid 910] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 907] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 905] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 907] <... futex resumed>) = 0 [pid 905] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 910] <... clone3 resumed> => {parent_tid=[913]}, 88) = 913 [pid 907] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 905] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 910] rt_sigprocmask(SIG_SETMASK, [], [pid 907] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 905] <... futex resumed>) = 0 [pid 910] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 907] creat("./bus", 000 [pid 905] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 910] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 907] <... creat resumed>) = 3 [pid 910] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 907] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 909] ioctl(4, LOOP_SET_FD, 3 [pid 907] <... futex resumed>) = 1 [pid 905] <... futex resumed>) = 0 [pid 909] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 907] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 905] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 909] close(4 [pid 907] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 905] <... futex resumed>) = 0 [pid 909] <... close resumed>) = 0 [pid 907] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 905] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 909] close(3 [pid 907] <... openat resumed>) = 4 [pid 911] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 908] <... futex resumed>) = 0 [pid 909] <... close resumed>) = 0 [pid 908] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 907] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 909] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 908] <... futex resumed>) = 0 [pid 909] <... futex resumed>) = 1 [pid 908] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 907] <... futex resumed>) = 1 [pid 906] <... futex resumed>) = 0 [pid 905] <... futex resumed>) = 0 [pid 911] <... futex resumed>) = 1 [pid 909] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 907] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 906] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 905] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 911] creat("./bus", 000 [pid 909] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 907] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 906] <... futex resumed>) = 0 [pid 905] <... futex resumed>) = 0 [pid 911] <... creat resumed>) = 3 [pid 909] chdir("./file0" [pid 907] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 906] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 905] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 911] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 909] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 907] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 909] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 907] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 911] <... futex resumed>) = 1 [pid 909] <... futex resumed>) = 1 [pid 908] <... futex resumed>) = 0 [pid 907] <... futex resumed>) = 1 [pid 906] <... futex resumed>) = 0 [pid 905] <... futex resumed>) = 0 ./strace-static-x86_64: Process 913 attached [pid 911] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 909] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 908] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 907] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 906] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 905] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 911] <... openat resumed>) = 4 [pid 909] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 908] <... futex resumed>) = 0 [pid 907] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 906] <... futex resumed>) = 0 [pid 905] <... futex resumed>) = 0 [pid 913] set_robust_list(0x7fe6f87d19a0, 24 [pid 911] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 909] creat("./bus", 000 [pid 908] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 907] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 906] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 913] <... set_robust_list resumed>) = 0 [pid 905] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 911] <... futex resumed>) = 0 [pid 909] <... creat resumed>) = 3 [pid 908] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 907] <... open resumed>) = 5 [pid 913] rt_sigprocmask(SIG_SETMASK, [], [pid 911] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 909] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 908] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 907] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 913] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 912 attached [pid 911] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 909] <... futex resumed>) = 1 [pid 908] <... futex resumed>) = 0 [pid 907] <... futex resumed>) = 1 [pid 906] <... futex resumed>) = 0 [pid 905] <... futex resumed>) = 0 [pid 913] memfd_create("syzkaller", 0 [pid 912] set_robust_list(0x5555636e06a0, 24 [pid 911] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 909] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 908] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 907] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 906] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 905] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 913] <... memfd_create resumed>) = 3 [pid 912] <... set_robust_list resumed>) = 0 [pid 911] <... futex resumed>) = 0 [pid 909] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 908] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 907] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 906] <... futex resumed>) = 0 [pid 905] <... futex resumed>) = 0 [pid 913] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 912] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 911] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 908] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 906] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 912] <... prctl resumed>) = 0 [pid 911] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 908] <... futex resumed>) = 0 [pid 912] setpgid(0, 0 [pid 911] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 908] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 912] <... setpgid resumed>) = 0 [pid 911] <... open resumed>) = 5 [pid 912] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 911] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 912] <... openat resumed>) = 3 [pid 911] <... futex resumed>) = 1 [pid 908] <... futex resumed>) = 0 [pid 912] write(3, "1000", 4 [pid 911] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 908] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 913] <... mmap resumed>) = 0x7fe6f03b1000 [pid 912] <... write resumed>) = 4 [pid 911] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 909] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 908] <... futex resumed>) = 0 [pid 907] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 905] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 912] close(3 [pid 911] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 909] <... openat resumed>) = 4 [pid 908] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 912] <... close resumed>) = 0 [pid 911] <... mmap resumed>) = 0x20000000 [pid 909] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 907] <... mmap resumed>) = 0x20000000 executing program [pid 912] write(1, "executing program\n", 18 [pid 911] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 909] <... futex resumed>) = 1 [pid 907] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 906] <... futex resumed>) = 0 [pid 913] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 912] <... write resumed>) = 18 [pid 911] <... futex resumed>) = 1 [pid 909] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 908] <... futex resumed>) = 0 [pid 907] <... futex resumed>) = 1 [pid 906] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 905] <... futex resumed>) = 0 [pid 912] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 911] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 909] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 908] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 907] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 906] <... futex resumed>) = 0 [pid 905] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 912] <... futex resumed>) = 0 [pid 911] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 909] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 908] <... futex resumed>) = 0 [pid 907] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 906] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 905] <... futex resumed>) = 0 [pid 913] <... write resumed>) = 262144 [pid 912] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 911] memfd_create("syzkaller", 0 [pid 909] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 908] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 907] memfd_create("syzkaller", 0 [pid 905] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 913] munmap(0x7fe6f03b1000, 138412032 [pid 912] <... rt_sigaction resumed>NULL, 8) = 0 [pid 911] <... memfd_create resumed>) = 6 [pid 909] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 907] <... memfd_create resumed>) = 6 [pid 913] <... munmap resumed>) = 0 [pid 912] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 911] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 909] <... futex resumed>) = 1 [pid 907] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 906] <... futex resumed>) = 0 [pid 913] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 912] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 911] <... mmap resumed>) = 0x7fe6f03b1000 [pid 909] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 907] <... mmap resumed>) = 0x7fe6f03b1000 [pid 906] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 913] <... openat resumed>) = 4 [pid 912] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 911] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 909] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 906] <... futex resumed>) = 0 [pid 913] ioctl(4, LOOP_SET_FD, 3 [pid 912] <... mmap resumed>) = 0x7fe6f87b1000 [pid 911] <... write resumed>) = 131072 [pid 909] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 907] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 906] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 913] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 912] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 911] munmap(0x7fe6f03b1000, 138412032 [pid 909] <... open resumed>) = 5 [pid 913] ioctl(4, LOOP_CLR_FD [pid 912] <... mprotect resumed>) = 0 [pid 911] <... munmap resumed>) = 0 [pid 909] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 907] <... write resumed>) = 131072 [pid 913] <... ioctl resumed>) = 0 [pid 912] rt_sigprocmask(SIG_BLOCK, ~[], [pid 911] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 909] <... futex resumed>) = 1 [pid 907] munmap(0x7fe6f03b1000, 138412032 [pid 906] <... futex resumed>) = 0 [pid 912] <... rt_sigprocmask resumed>[], 8) = 0 [pid 911] <... openat resumed>) = 7 [pid 909] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 907] <... munmap resumed>) = 0 [pid 906] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 912] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 911] ioctl(7, LOOP_SET_FD, 6 [pid 909] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 907] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 906] <... futex resumed>) = 0 [pid 911] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 909] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 907] <... openat resumed>) = 7 [pid 906] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 912] <... clone3 resumed> => {parent_tid=[914]}, 88) = 914 [pid 911] ioctl(7, LOOP_CLR_FD [pid 909] <... mmap resumed>) = 0x20000000 [pid 907] ioctl(7, LOOP_SET_FD, 6 [pid 913] ioctl(4, LOOP_SET_FD, 3 [pid 912] rt_sigprocmask(SIG_SETMASK, [], [pid 911] <... ioctl resumed>) = 0 [pid 909] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 907] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 913] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 912] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 909] <... futex resumed>) = 1 [pid 907] ioctl(7, LOOP_CLR_FD [pid 906] <... futex resumed>) = 0 [pid 913] close(4 [pid 912] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 909] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 907] <... ioctl resumed>) = 0 [pid 906] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 913] <... close resumed>) = 0 [pid 912] <... futex resumed>) = 0 [pid 909] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 906] <... futex resumed>) = 0 [pid 913] close(3 [pid 912] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 909] memfd_create("syzkaller", 0 [pid 906] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 911] ioctl(7, LOOP_SET_FD, 6 [pid 913] <... close resumed>) = 0 [pid 911] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 913] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 911] close(7 [pid 909] <... memfd_create resumed>) = 6 [pid 913] <... futex resumed>) = 1 [pid 911] <... close resumed>) = 0 [pid 910] <... futex resumed>) = 0 [pid 909] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 913] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 911] close(6 [pid 910] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 913] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 911] <... close resumed>) = 0 [pid 910] <... futex resumed>) = 0 [pid 909] <... mmap resumed>) = 0x7fe6f03b1000 [pid 907] ioctl(7, LOOP_SET_FD, 6./strace-static-x86_64: Process 914 attached [pid 913] chdir("./file0" [pid 911] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 910] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 911] <... futex resumed>) = 1 [pid 908] <... futex resumed>) = 0 [pid 911] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 908] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 911] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 908] <... futex resumed>) = 0 [pid 911] mknod(0x20000000, 000 [pid 908] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 911] <... mknod resumed>) = -1 EEXIST (File exists) [pid 911] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 908] <... futex resumed>) = 0 [pid 911] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 908] exit_group(0 [pid 913] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 911] <... futex resumed>) = ? [pid 909] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 908] <... exit_group resumed>) = ? [pid 907] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 914] set_robust_list(0x7fe6f87d19a0, 24 [pid 913] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 911] +++ exited with 0 +++ [pid 909] <... write resumed>) = 131072 [pid 908] +++ exited with 0 +++ [pid 907] close(7 [pid 914] <... set_robust_list resumed>) = 0 [pid 913] <... futex resumed>) = 1 [pid 910] <... futex resumed>) = 0 [pid 909] munmap(0x7fe6f03b1000, 138412032 [pid 914] rt_sigprocmask(SIG_SETMASK, [], [pid 913] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 910] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 907] <... close resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=908, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 909] <... munmap resumed>) = 0 [pid 913] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 910] <... futex resumed>) = 0 [pid 914] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 913] creat("./bus", 000 [pid 910] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 909] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 907] close(6 [pid 913] <... creat resumed>) = 3 [pid 914] memfd_create("syzkaller", 0 [pid 913] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 909] <... openat resumed>) = 7 [pid 907] <... close resumed>) = 0 [pid 914] <... memfd_create resumed>) = 3 [pid 913] <... futex resumed>) = 1 [pid 910] <... futex resumed>) = 0 [pid 909] ioctl(7, LOOP_SET_FD, 6 [pid 907] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 914] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 913] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 910] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 909] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 907] <... futex resumed>) = 1 [pid 905] <... futex resumed>) = 0 [pid 914] <... mmap resumed>) = 0x7fe6f03b1000 [pid 913] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 910] <... futex resumed>) = 0 [pid 909] ioctl(7, LOOP_CLR_FD [pid 907] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 905] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 914] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 913] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 910] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 909] <... ioctl resumed>) = 0 [pid 907] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 905] <... futex resumed>) = 0 [pid 913] <... openat resumed>) = 4 [pid 907] mknod(0x20000000, 000 [pid 905] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 914] <... write resumed>) = 262144 [pid 913] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 907] <... mknod resumed>) = -1 EEXIST (File exists) [pid 913] <... futex resumed>) = 1 [pid 910] <... futex resumed>) = 0 [pid 907] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 913] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 910] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 907] <... futex resumed>) = 1 [pid 905] <... futex resumed>) = 0 [pid 913] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 910] <... futex resumed>) = 0 [pid 907] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 905] exit_group(0 [pid 913] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 910] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 907] <... futex resumed>) = ? [pid 905] <... exit_group resumed>) = ? [pid 913] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 907] +++ exited with 0 +++ [pid 905] +++ exited with 0 +++ [pid 306] <... restart_syscall resumed>) = 0 [pid 914] munmap(0x7fe6f03b1000, 138412032 [pid 913] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 909] ioctl(7, LOOP_SET_FD, 6 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=905, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 914] <... munmap resumed>) = 0 [pid 913] <... futex resumed>) = 1 [pid 910] <... futex resumed>) = 0 [pid 909] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 914] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 913] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 910] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 909] close(7 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 914] <... openat resumed>) = 4 [pid 913] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 910] <... futex resumed>) = 0 [pid 909] <... close resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 914] ioctl(4, LOOP_SET_FD, 3 [pid 913] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 910] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 909] close(6 [pid 306] ioctl(3, LOOP_CLR_FD [pid 914] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 913] <... open resumed>) = 5 [pid 909] <... close resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 914] ioctl(4, LOOP_CLR_FD [pid 913] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 909] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] close(3 [pid 914] <... ioctl resumed>) = 0 [pid 913] <... futex resumed>) = 1 [pid 910] <... futex resumed>) = 0 [pid 909] <... futex resumed>) = 1 [pid 906] <... futex resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 913] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 910] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 909] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 906] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 913] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 910] <... futex resumed>) = 0 [pid 909] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 906] <... futex resumed>) = 0 [pid 913] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 910] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 909] mknod(0x20000000, 000 [pid 906] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 915 [pid 913] <... mmap resumed>) = 0x20000000 [pid 909] <... mknod resumed>) = -1 EEXIST (File exists) [pid 913] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 909] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 914] ioctl(4, LOOP_SET_FD, 3 [pid 913] <... futex resumed>) = 1 [pid 910] <... futex resumed>) = 0 [pid 909] <... futex resumed>) = 1 [pid 906] <... futex resumed>) = 0 [pid 914] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 913] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 910] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 909] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 906] exit_group(0 [pid 914] close(4 [pid 913] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 910] <... futex resumed>) = 0 [pid 909] <... futex resumed>) = ? [pid 906] <... exit_group resumed>) = ? [pid 914] <... close resumed>) = 0 [pid 913] memfd_create("syzkaller", 0 [pid 910] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 909] +++ exited with 0 +++ [pid 906] +++ exited with 0 +++ [pid 914] close(3 [pid 913] <... memfd_create resumed>) = 6 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=906, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 914] <... close resumed>) = 0 [pid 913] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 914] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 913] <... mmap resumed>) = 0x7fe6f03b1000 [pid 914] <... futex resumed>) = 1 [pid 913] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 912] <... futex resumed>) = 0 [pid 914] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 913] <... write resumed>) = 131072 [pid 912] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 914] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 913] munmap(0x7fe6f03b1000, 138412032 [pid 912] <... futex resumed>) = 0 [pid 914] chdir("./file0" [pid 913] <... munmap resumed>) = 0 [pid 912] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 914] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 913] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 914] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 913] <... openat resumed>) = 7 [pid 914] <... futex resumed>) = 1 [pid 913] ioctl(7, LOOP_SET_FD, 6 [pid 912] <... futex resumed>) = 0 [pid 914] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 913] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 912] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 914] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 913] ioctl(7, LOOP_CLR_FD [pid 912] <... futex resumed>) = 0 [pid 914] creat("./bus", 000 [pid 913] <... ioctl resumed>) = 0 [pid 912] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 914] <... creat resumed>) = 3 [pid 914] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 912] <... futex resumed>) = 0 [pid 914] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 912] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 914] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 912] <... futex resumed>) = 0 [pid 914] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 912] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 914] <... openat resumed>) = 4 [pid 914] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 912] <... futex resumed>) = 0 [pid 914] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 912] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 914] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 912] <... futex resumed>) = 0 [pid 914] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 912] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... restart_syscall resumed>) = 0 [pid 913] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 913] close(7) = 0 [pid 913] close(6) = 0 [pid 913] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 913] <... futex resumed>) = 1 [pid 910] <... futex resumed>) = 0 [pid 913] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 910] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... openat resumed>) = 3 [pid 913] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 910] <... futex resumed>) = 0 [pid 303] ioctl(3, LOOP_CLR_FD [pid 913] mknod(0x20000000, 000 [pid 910] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... ioctl resumed>) = 0 [pid 913] <... mknod resumed>) = -1 EEXIST (File exists) [pid 913] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] close(3 [pid 913] <... futex resumed>) = 1 [pid 910] <... futex resumed>) = 0 [pid 913] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 910] exit_group(0 [pid 303] <... close resumed>) = 0 [pid 913] <... futex resumed>) = ? [pid 910] <... exit_group resumed>) = ? [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 913] +++ exited with 0 +++ [pid 910] +++ exited with 0 +++ [pid 305] <... restart_syscall resumed>) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=910, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 305] ioctl(3, LOOP_CLR_FD [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 916 [pid 305] <... ioctl resumed>) = 0 [pid 305] close(3) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 917 ./strace-static-x86_64: Process 915 attached [pid 914] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 914] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 912] <... futex resumed>) = 0 [pid 914] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 912] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 914] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 912] <... futex resumed>) = 0 executing program executing program [pid 914] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 912] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 914] <... open resumed>) = 5 [pid 914] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 912] <... futex resumed>) = 0 [pid 914] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 912] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 914] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 912] <... futex resumed>) = 0 [pid 914] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 912] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 915] set_robust_list(0x5555636e06a0, 24 [pid 914] <... mmap resumed>) = 0x20000000 [pid 914] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 915] <... set_robust_list resumed>) = 0 [pid 914] <... futex resumed>) = 1 [pid 912] <... futex resumed>) = 0 [pid 914] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 912] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 914] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 912] <... futex resumed>) = 0 [pid 914] memfd_create("syzkaller", 0 [pid 912] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 914] <... memfd_create resumed>) = 6 [pid 914] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 915] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 914] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 915] <... prctl resumed>) = 0 [pid 914] <... write resumed>) = 131072 [pid 914] munmap(0x7fe6f03b1000, 138412032 [pid 915] setpgid(0, 0 [pid 914] <... munmap resumed>) = 0 [pid 914] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 7 [pid 915] <... setpgid resumed>) = 0 [pid 914] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 914] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 916 attached [pid 916] set_robust_list(0x5555636e06a0, 24) = 0 [pid 916] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 916] setpgid(0, 0) = 0 [pid 915] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 916] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 915] <... openat resumed>) = 3 [pid 916] write(3, "1000", 4) = 4 [pid 916] close(3) = 0 [pid 916] write(1, "executing program\n", 18) = 18 [pid 916] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 915] write(3, "1000", 4 [pid 914] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 914] close(7) = 0 [pid 914] close(6 [pid 915] <... write resumed>) = 4 [pid 914] <... close resumed>) = 0 [pid 914] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 912] <... futex resumed>) = 0 [pid 914] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 912] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 914] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 912] <... futex resumed>) = 0 [pid 916] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 914] mknod(0x20000000, 000 [pid 912] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 916] <... rt_sigaction resumed>NULL, 8) = 0 [pid 914] <... mknod resumed>) = -1 EEXIST (File exists) [pid 916] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 914] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 916] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 914] <... futex resumed>) = 1 [pid 912] <... futex resumed>) = 0 [pid 916] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 914] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 912] exit_group(0 [pid 916] <... mmap resumed>) = 0x7fe6f87b1000 [pid 915] close(3 [pid 914] <... futex resumed>) = ? [pid 912] <... exit_group resumed>) = ? [pid 916] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 915] <... close resumed>) = 0 [pid 914] +++ exited with 0 +++ [pid 912] +++ exited with 0 +++ [pid 302] <... restart_syscall resumed>) = 0 [pid 916] <... mprotect resumed>) = 0 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=912, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 916] rt_sigprocmask(SIG_BLOCK, ~[], [pid 915] write(1, "executing program\n", 18./strace-static-x86_64: Process 917 attached [pid 916] <... rt_sigprocmask resumed>[], 8) = 0 [pid 915] <... write resumed>) = 18 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 917] set_robust_list(0x5555636e06a0, 24 [pid 916] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 302] <... openat resumed>) = 3 [pid 917] <... set_robust_list resumed>) = 0 [pid 915] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... openat resumed>) = 3 [pid 302] ioctl(3, LOOP_CLR_FD [pid 917] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 916] <... clone3 resumed> => {parent_tid=[918]}, 88) = 918 [pid 915] <... futex resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 302] <... ioctl resumed>) = 0 [pid 917] <... prctl resumed>) = 0 [pid 916] rt_sigprocmask(SIG_SETMASK, [], [pid 304] <... ioctl resumed>) = 0 [pid 302] close(3 [pid 917] setpgid(0, 0 [pid 916] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 915] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 304] close(3 [pid 302] <... close resumed>) = 0 [pid 917] <... setpgid resumed>) = 0 [pid 916] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... close resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 917] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 916] <... futex resumed>) = 0 [pid 915] <... rt_sigaction resumed>NULL, 8) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 917] <... openat resumed>) = 3 [pid 916] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 915] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 919 [pid 917] write(3, "1000", 4 [pid 915] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 920 [pid 917] <... write resumed>) = 4 [pid 917] close(3 [pid 915] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 917] <... close resumed>) = 0 executing program [pid 917] write(1, "executing program\n", 18 [pid 915] <... mmap resumed>) = 0x7fe6f87b1000 [pid 917] <... write resumed>) = 18 [pid 917] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 917] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 917] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 917] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 917] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 917] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 915] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 917] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 915] <... mprotect resumed>) = 0 [pid 915] rt_sigprocmask(SIG_BLOCK, ~[], [pid 917] <... clone3 resumed> => {parent_tid=[921]}, 88) = 921 [pid 915] <... rt_sigprocmask resumed>[], 8) = 0 [pid 917] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 917] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 915] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 917] <... futex resumed>) = 0 [pid 917] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 920 attached [pid 915] <... clone3 resumed> => {parent_tid=[922]}, 88) = 922 [pid 920] set_robust_list(0x5555636e06a0, 24 [pid 915] rt_sigprocmask(SIG_SETMASK, [], [pid 920] <... set_robust_list resumed>) = 0 [pid 915] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 920] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 915] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 920] <... prctl resumed>) = 0 [pid 915] <... futex resumed>) = 0 [pid 920] setpgid(0, 0) = 0 [pid 920] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 915] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 920] <... openat resumed>) = 3 [pid 920] write(3, "1000", 4) = 4 [pid 920] close(3) = 0 [pid 920] write(1, "executing program\n", 18) = 18 executing program [pid 920] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 executing program [pid 920] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 920] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 920] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 920] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 920] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 920] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[923]}, 88) = 923 [pid 920] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 920] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 920] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 919 attached [pid 919] set_robust_list(0x5555636e06a0, 24) = 0 [pid 919] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 919] setpgid(0, 0) = 0 [pid 919] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 919] write(3, "1000", 4) = 4 [pid 919] close(3) = 0 [pid 919] write(1, "executing program\n", 18) = 18 [pid 919] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 919] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 919] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 919] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 919] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 919] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 919] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[924]}, 88) = 924 [pid 919] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 919] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 919] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 923 attached [pid 923] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 923] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 923] memfd_create("syzkaller", 0) = 3 [pid 923] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 923] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 ./strace-static-x86_64: Process 924 attached [pid 924] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 924] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 924] memfd_create("syzkaller", 0 [pid 923] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 924] <... memfd_create resumed>) = 3 [pid 924] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 922 attached ./strace-static-x86_64: Process 921 attached ./strace-static-x86_64: Process 918 attached [pid 922] set_robust_list(0x7fe6f87d19a0, 24 [pid 921] set_robust_list(0x7fe6f87d19a0, 24 [pid 918] set_robust_list(0x7fe6f87d19a0, 24 [pid 922] <... set_robust_list resumed>) = 0 [pid 921] <... set_robust_list resumed>) = 0 [pid 918] <... set_robust_list resumed>) = 0 [pid 923] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 923] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 923] ioctl(4, LOOP_CLR_FD) = 0 [pid 924] <... mmap resumed>) = 0x7fe6f03b1000 [pid 922] rt_sigprocmask(SIG_SETMASK, [], [pid 921] rt_sigprocmask(SIG_SETMASK, [], [pid 918] rt_sigprocmask(SIG_SETMASK, [], [pid 922] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 921] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 918] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 922] memfd_create("syzkaller", 0 [pid 921] memfd_create("syzkaller", 0 [pid 922] <... memfd_create resumed>) = 3 [pid 921] <... memfd_create resumed>) = 3 [pid 923] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 923] close(4) = 0 [pid 923] close(3 [pid 922] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 921] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 918] memfd_create("syzkaller", 0 [pid 922] <... mmap resumed>) = 0x7fe6f03b1000 [pid 921] <... mmap resumed>) = 0x7fe6f03b1000 [pid 918] <... memfd_create resumed>) = 3 [pid 923] <... close resumed>) = 0 [pid 923] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 920] <... futex resumed>) = 0 [pid 920] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 920] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 923] <... futex resumed>) = 1 [pid 923] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 923] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 920] <... futex resumed>) = 0 [pid 920] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 920] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 923] <... futex resumed>) = 1 [pid 923] creat("./bus", 000) = 3 [pid 923] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 920] <... futex resumed>) = 0 [pid 920] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 920] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 923] <... futex resumed>) = 1 [pid 923] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 924] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 923] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 920] <... futex resumed>) = 0 [pid 920] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 922] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 920] <... futex resumed>) = 0 [pid 920] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 923] <... futex resumed>) = 1 [pid 923] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL) = -1 ENOSPC (No space left on device) [pid 923] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 920] <... futex resumed>) = 0 [pid 920] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 920] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 923] <... futex resumed>) = 1 [pid 923] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 923] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 920] <... futex resumed>) = 0 [pid 920] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 920] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 923] <... futex resumed>) = 1 [pid 923] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 918] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 923] <... mmap resumed>) = 0x20000000 [pid 923] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 920] <... futex resumed>) = 0 [pid 920] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 920] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 923] <... futex resumed>) = 1 [pid 923] memfd_create("syzkaller", 0) = 6 [pid 923] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 921] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 918] <... mmap resumed>) = 0x7fe6f03b1000 [pid 924] <... write resumed>) = 262144 [pid 923] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 924] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 924] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 923] <... write resumed>) = 131072 [pid 924] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 924] ioctl(4, LOOP_CLR_FD) = 0 [pid 923] munmap(0x7fe6f03b1000, 138412032 [pid 918] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 923] <... munmap resumed>) = 0 [pid 923] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 7 [pid 923] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 923] ioctl(7, LOOP_CLR_FD) = 0 [pid 922] <... write resumed>) = 262144 [pid 924] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 924] close(4) = 0 [pid 924] close(3) = 0 [pid 923] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 923] close(7) = 0 [pid 923] close(6 [pid 924] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 921] <... write resumed>) = 262144 [pid 919] <... futex resumed>) = 0 [pid 919] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 919] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 924] <... futex resumed>) = 1 [pid 924] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 924] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 919] <... futex resumed>) = 0 [pid 919] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 919] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 924] <... futex resumed>) = 1 [pid 924] creat("./bus", 000) = 3 [pid 923] <... close resumed>) = 0 [pid 924] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 919] <... futex resumed>) = 0 [pid 919] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 919] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 924] <... futex resumed>) = 1 [pid 924] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 923] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 920] <... futex resumed>) = 0 [pid 920] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 918] <... write resumed>) = 262144 [pid 922] munmap(0x7fe6f03b1000, 138412032 [pid 920] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 923] <... futex resumed>) = 1 [pid 923] mknod(0x20000000, 000) = -1 EEXIST (File exists) [pid 923] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 920] <... futex resumed>) = 0 [pid 920] exit_group(0) = ? [pid 923] <... futex resumed>) = ? [pid 924] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 922] <... munmap resumed>) = 0 [pid 921] munmap(0x7fe6f03b1000, 138412032 [pid 918] munmap(0x7fe6f03b1000, 138412032 [pid 919] <... futex resumed>) = 0 [pid 919] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 919] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 924] <... futex resumed>) = 1 [pid 924] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOSPC (No space left on device) [pid 922] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 923] +++ exited with 0 +++ [pid 922] <... openat resumed>) = 4 [pid 921] <... munmap resumed>) = 0 [pid 920] +++ exited with 0 +++ [pid 918] <... munmap resumed>) = 0 [pid 922] ioctl(4, LOOP_SET_FD, 3 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=920, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 924] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 919] <... futex resumed>) = 0 [pid 919] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 919] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 924] <... futex resumed>) = 1 [pid 924] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 924] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 922] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 921] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 918] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 919] <... futex resumed>) = 0 [pid 919] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 919] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 924] <... futex resumed>) = 1 [pid 924] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 922] ioctl(4, LOOP_CLR_FD [pid 921] <... openat resumed>) = 4 [pid 918] <... openat resumed>) = 4 [pid 924] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 919] <... futex resumed>) = 0 [pid 919] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 919] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 924] <... futex resumed>) = 1 [pid 924] memfd_create("syzkaller", 0) = 6 [pid 924] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 924] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 922] <... ioctl resumed>) = 0 [pid 921] ioctl(4, LOOP_SET_FD, 3 [pid 918] ioctl(4, LOOP_SET_FD, 3 [pid 921] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 918] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 921] ioctl(4, LOOP_CLR_FD [pid 924] <... write resumed>) = 131072 [pid 921] <... ioctl resumed>) = 0 [pid 918] ioctl(4, LOOP_CLR_FD [pid 924] munmap(0x7fe6f03b1000, 138412032 [pid 918] <... ioctl resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 922] ioctl(4, LOOP_SET_FD, 3 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 922] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] <... openat resumed>) = 3 [pid 922] close(4 [pid 304] ioctl(3, LOOP_CLR_FD [pid 922] <... close resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 922] close(3 [pid 304] close(3) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 925 [pid 924] <... munmap resumed>) = 0 [pid 921] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 922] <... close resumed>) = 0 [pid 921] close(4 [pid 918] ioctl(4, LOOP_SET_FD, 3 [pid 922] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 921] <... close resumed>) = 0 [pid 918] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 921] close(3 [pid 915] <... futex resumed>) = 0 [pid 922] <... futex resumed>) = 1 [pid 918] close(4 [pid 915] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 924] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 915] <... futex resumed>) = 0 [pid 924] <... openat resumed>) = 7 [pid 918] <... close resumed>) = 0 [pid 915] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 924] ioctl(7, LOOP_SET_FD, 6 [pid 918] close(3 [pid 922] chdir("./file0" [pid 924] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 924] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 925 attached [pid 921] <... close resumed>) = 0 [pid 925] set_robust_list(0x5555636e06a0, 24) = 0 [pid 925] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 925] setpgid(0, 0) = 0 [pid 925] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 918] <... close resumed>) = 0 [pid 922] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 921] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 918] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 922] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 921] <... futex resumed>) = 1 [pid 917] <... futex resumed>) = 0 [pid 922] <... futex resumed>) = 1 [pid 921] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 918] <... futex resumed>) = 1 [pid 917] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 916] <... futex resumed>) = 0 [pid 915] <... futex resumed>) = 0 [pid 922] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 921] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 918] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 917] <... futex resumed>) = 0 [pid 916] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 922] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 921] chdir("./file0" [pid 918] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 917] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 916] <... futex resumed>) = 0 [pid 915] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 922] creat("./bus", 000 [pid 916] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 921] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 915] <... futex resumed>) = 0 [pid 915] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 922] <... creat resumed>) = 3 [pid 921] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 922] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 918] chdir("./file0" [pid 924] ioctl(7, LOOP_SET_FD, 6 [pid 922] <... futex resumed>) = 1 [pid 921] <... futex resumed>) = 1 [pid 917] <... futex resumed>) = 0 [pid 915] <... futex resumed>) = 0 [pid 918] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 924] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 922] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 921] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 918] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 917] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 915] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 924] close(7 [pid 922] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 921] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 918] <... futex resumed>) = 1 [pid 917] <... futex resumed>) = 0 [pid 916] <... futex resumed>) = 0 [pid 915] <... futex resumed>) = 0 [pid 924] <... close resumed>) = 0 [pid 922] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 921] creat("./bus", 000 [pid 918] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 917] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 916] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 915] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 924] close(6 [pid 916] <... futex resumed>) = 0 [pid 924] <... close resumed>) = 0 [pid 922] <... openat resumed>) = 4 [pid 921] <... creat resumed>) = 3 [pid 918] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 916] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 924] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 922] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 921] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 918] creat("./bus", 000 [pid 922] <... futex resumed>) = 1 [pid 915] <... futex resumed>) = 0 [pid 924] <... futex resumed>) = 1 [pid 921] <... futex resumed>) = 1 [pid 919] <... futex resumed>) = 0 [pid 917] <... futex resumed>) = 0 [pid 915] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 922] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 924] mknod(0x20000000, 000 [pid 921] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 919] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 918] <... creat resumed>) = 3 [pid 917] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 915] <... futex resumed>) = 0 [pid 924] <... mknod resumed>) = -1 EEXIST (File exists) [pid 921] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 919] <... futex resumed>) = 0 [pid 918] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 917] <... futex resumed>) = 0 [pid 915] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 924] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 922] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 921] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 919] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 918] <... futex resumed>) = 1 [pid 917] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 916] <... futex resumed>) = 0 [pid 924] <... futex resumed>) = 0 [pid 922] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 921] <... openat resumed>) = 4 [pid 919] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 918] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 916] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 924] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 922] <... futex resumed>) = 1 [pid 921] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 919] exit_group(0 [pid 916] <... futex resumed>) = 0 [pid 915] <... futex resumed>) = 0 [pid 924] <... futex resumed>) = ? [pid 922] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 921] <... futex resumed>) = 1 [pid 919] <... exit_group resumed>) = ? [pid 918] <... openat resumed>) = 4 [pid 917] <... futex resumed>) = 0 [pid 916] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 915] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 924] +++ exited with 0 +++ [pid 922] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 921] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 919] +++ exited with 0 +++ [pid 918] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 917] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 916] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 915] <... futex resumed>) = 0 [pid 922] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 921] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 918] <... futex resumed>) = 0 [pid 917] <... futex resumed>) = 0 [pid 916] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 915] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=919, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 917] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 916] <... futex resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 922] <... open resumed>) = 5 [pid 921] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 918] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 916] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 922] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 925] <... openat resumed>) = 3 [pid 922] <... futex resumed>) = 1 [pid 921] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 915] <... futex resumed>) = 0 [pid 922] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 921] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 918] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 915] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 922] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 921] <... futex resumed>) = 1 [pid 918] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 917] <... futex resumed>) = 0 [pid 915] <... futex resumed>) = 0 [pid 922] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 921] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 918] <... futex resumed>) = 1 [pid 917] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 916] <... futex resumed>) = 0 [pid 917] <... futex resumed>) = 0 [pid 916] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 915] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 917] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 916] <... futex resumed>) = 0 [pid 922] <... mmap resumed>) = 0x20000000 [pid 916] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 921] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 925] write(3, "1000", 4 [pid 922] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 921] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 918] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 922] <... futex resumed>) = 1 [pid 915] <... futex resumed>) = 0 [pid 921] <... open resumed>) = 5 [pid 915] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 925] <... write resumed>) = 4 [pid 915] <... futex resumed>) = 0 [pid 922] memfd_create("syzkaller", 0 [pid 921] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 915] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 918] <... open resumed>) = 5 [pid 925] close(3 [pid 922] <... memfd_create resumed>) = 6 [pid 921] <... futex resumed>) = 1 [pid 918] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 executing program [pid 917] <... futex resumed>) = 0 [pid 925] <... close resumed>) = 0 [pid 922] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 921] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 918] <... futex resumed>) = 1 [pid 917] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 916] <... futex resumed>) = 0 [pid 925] write(1, "executing program\n", 18 [pid 922] <... mmap resumed>) = 0x7fe6f03b1000 [pid 921] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 918] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 917] <... futex resumed>) = 0 [pid 916] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 925] <... write resumed>) = 18 [pid 917] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 916] <... futex resumed>) = 0 [pid 925] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 916] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 925] <... futex resumed>) = 0 [pid 925] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 925] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 925] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 925] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 925] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 925] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 302] <... restart_syscall resumed>) = 0 [pid 925] <... clone3 resumed> => {parent_tid=[926]}, 88) = 926 [pid 925] rt_sigprocmask(SIG_SETMASK, [], [pid 922] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 921] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 918] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 925] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 925] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... openat resumed>) = 3 [pid 925] <... futex resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 925] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 302] <... ioctl resumed>) = 0 [pid 922] <... write resumed>) = 131072 [pid 302] close(3) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 922] munmap(0x7fe6f03b1000, 138412032 [pid 921] <... mmap resumed>) = 0x20000000 [pid 918] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 927 ./strace-static-x86_64: Process 926 attached [pid 918] <... mmap resumed>) = 0x20000000 [pid 921] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 926] set_robust_list(0x7fe6f87d19a0, 24 [pid 922] <... munmap resumed>) = 0 [pid 921] <... futex resumed>) = 1 [pid 918] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 922] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 917] <... futex resumed>) = 0 [pid 921] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 918] <... futex resumed>) = 1 [pid 917] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 922] <... openat resumed>) = 7 [pid 916] <... futex resumed>) = 0 [pid 922] ioctl(7, LOOP_SET_FD, 6 [pid 921] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 918] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 917] <... futex resumed>) = 0 [pid 916] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 922] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 921] memfd_create("syzkaller", 0 [pid 918] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 917] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 916] <... futex resumed>) = 0 [pid 922] ioctl(7, LOOP_CLR_FD [pid 921] <... memfd_create resumed>) = 6 [pid 918] memfd_create("syzkaller", 0 [pid 916] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 922] <... ioctl resumed>) = 0 [pid 921] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 918] <... memfd_create resumed>) = 6 [pid 921] <... mmap resumed>) = 0x7fe6f03b1000 [pid 918] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 926] <... set_robust_list resumed>) = 0 [pid 926] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 926] memfd_create("syzkaller", 0) = 3 [pid 926] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 921] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 918] <... mmap resumed>) = 0x7fe6f03b1000 [pid 921] <... write resumed>) = 131072 [pid 926] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 918] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 922] ioctl(7, LOOP_SET_FD, 6 [pid 921] munmap(0x7fe6f03b1000, 138412032 [pid 926] <... write resumed>) = 262144 [pid 926] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 926] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 918] <... write resumed>) = 131072 [pid 922] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 926] <... openat resumed>) = 4 [pid 926] ioctl(4, LOOP_SET_FD, 3 [pid 921] <... munmap resumed>) = 0 [pid 922] close(7 [pid 918] munmap(0x7fe6f03b1000, 138412032 [pid 926] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 922] <... close resumed>) = 0 ./strace-static-x86_64: Process 927 attached [pid 922] close(6 [pid 921] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 918] <... munmap resumed>) = 0 [pid 922] <... close resumed>) = 0 [pid 922] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 921] <... openat resumed>) = 7 [pid 918] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 922] <... futex resumed>) = 1 [pid 921] ioctl(7, LOOP_SET_FD, 6 [pid 918] <... openat resumed>) = 7 [pid 915] <... futex resumed>) = 0 [pid 922] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 921] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 918] ioctl(7, LOOP_SET_FD, 6 [pid 915] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 922] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 921] ioctl(7, LOOP_CLR_FD [pid 918] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 915] <... futex resumed>) = 0 [pid 922] mknod(0x20000000, 000 [pid 921] <... ioctl resumed>) = 0 [pid 918] ioctl(7, LOOP_CLR_FD [pid 915] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 926] ioctl(4, LOOP_CLR_FD) = 0 [pid 922] <... mknod resumed>) = -1 EEXIST (File exists) [pid 918] <... ioctl resumed>) = 0 [pid 922] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 915] <... futex resumed>) = 0 [pid 922] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 927] set_robust_list(0x5555636e06a0, 24 [pid 915] exit_group(0 [pid 927] <... set_robust_list resumed>) = 0 [pid 922] <... futex resumed>) = 0 [pid 915] <... exit_group resumed>) = ? [pid 922] +++ exited with 0 +++ [pid 927] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 927] setpgid(0, 0) = 0 [pid 927] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 915] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=915, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 926] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 926] close(4 [pid 921] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 918] ioctl(7, LOOP_SET_FD, 6 [pid 926] <... close resumed>) = 0 [pid 921] close(7 [pid 918] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 926] close(3) = 0 [pid 921] <... close resumed>) = 0 [pid 918] close(7 [pid 921] close(6 [pid 918] <... close resumed>) = 0 [pid 926] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 925] <... futex resumed>) = 0 [pid 925] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 925] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 926] <... futex resumed>) = 1 [pid 926] chdir("./file0" [pid 921] <... close resumed>) = 0 [pid 918] close(6 [pid 921] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 926] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 926] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 925] <... futex resumed>) = 0 [pid 925] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 925] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 926] <... futex resumed>) = 1 [pid 918] <... close resumed>) = 0 [pid 921] <... futex resumed>) = 1 [pid 917] <... futex resumed>) = 0 [pid 921] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 918] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 917] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 921] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 918] <... futex resumed>) = 1 [pid 917] <... futex resumed>) = 0 [pid 916] <... futex resumed>) = 0 [pid 921] mknod(0x20000000, 000 [pid 918] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 917] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 916] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 921] <... mknod resumed>) = -1 EEXIST (File exists) [pid 918] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 916] <... futex resumed>) = 0 [pid 921] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 918] mknod(0x20000000, 000 [pid 916] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 921] <... futex resumed>) = 1 [pid 918] <... mknod resumed>) = -1 EEXIST (File exists) [pid 917] <... futex resumed>) = 0 [pid 921] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 918] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 917] exit_group(0 [pid 918] <... futex resumed>) = 1 [pid 916] <... futex resumed>) = 0 [pid 921] <... futex resumed>) = ? [pid 918] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 917] <... exit_group resumed>) = ? [pid 921] +++ exited with 0 +++ [pid 916] exit_group(0 [pid 926] creat("./bus", 000 [pid 916] <... exit_group resumed>) = ? [pid 926] <... creat resumed>) = 3 [pid 926] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 925] <... futex resumed>) = 0 [pid 925] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 925] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 926] <... futex resumed>) = 1 [pid 926] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 917] +++ exited with 0 +++ [pid 918] <... futex resumed>) = ? [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=917, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 926] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 925] <... futex resumed>) = 0 [pid 925] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 925] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 926] <... futex resumed>) = 1 [pid 926] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 927] <... openat resumed>) = 3 [pid 918] +++ exited with 0 +++ [pid 916] +++ exited with 0 +++ [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=916, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 926] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 926] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 925] <... futex resumed>) = 0 [pid 925] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 925] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 926] <... futex resumed>) = 1 [pid 926] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 926] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 925] <... futex resumed>) = 0 [pid 925] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 925] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 926] <... futex resumed>) = 1 [pid 926] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 926] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 925] <... futex resumed>) = 0 [pid 925] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 925] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 926] <... futex resumed>) = 1 [pid 926] memfd_create("syzkaller", 0) = 6 [pid 926] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 926] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072executing program [pid 927] write(3, "1000", 4) = 4 [pid 927] close(3) = 0 [pid 927] write(1, "executing program\n", 18) = 18 [pid 927] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 926] <... write resumed>) = 131072 [pid 927] <... futex resumed>) = 0 [pid 927] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 927] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 927] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 927] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 927] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 927] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[928]}, 88) = 928 [pid 927] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 927] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 926] munmap(0x7fe6f03b1000, 138412032 [pid 927] <... futex resumed>) = 0 [pid 927] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 926] <... munmap resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 306] <... openat resumed>) = 3 [pid 305] <... openat resumed>) = 3 [pid 303] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 305] ioctl(3, LOOP_CLR_FD [pid 303] ioctl(3, LOOP_CLR_FD [pid 306] <... ioctl resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 306] close(3 [pid 305] close(3 [pid 303] close(3 [pid 306] <... close resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 929 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 930 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 931 [pid 926] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 7 [pid 926] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 926] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 931 attached [pid 931] set_robust_list(0x5555636e06a0, 24) = 0 [pid 931] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 931] setpgid(0, 0) = 0 [pid 926] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 926] close(7) = 0 [pid 926] close(6) = 0 [pid 926] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 925] <... futex resumed>) = 0 [pid 926] mknod(0x20000000, 000 [pid 925] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 926] <... mknod resumed>) = -1 EEXIST (File exists) [pid 925] <... futex resumed>) = 0 [pid 926] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 925] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 926] <... futex resumed>) = 0 [pid 925] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 926] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 925] exit_group(0 [pid 926] <... futex resumed>) = ? [pid 925] <... exit_group resumed>) = ? [pid 926] +++ exited with 0 +++ [pid 925] +++ exited with 0 +++ [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=925, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 931] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 931] write(3, "1000", 4) = 4 [pid 931] close(3./strace-static-x86_64: Process 930 attached ./strace-static-x86_64: Process 929 attached ./strace-static-x86_64: Process 928 attached [pid 304] <... restart_syscall resumed>) = 0 [pid 930] set_robust_list(0x5555636e06a0, 24 [pid 929] set_robust_list(0x5555636e06a0, 24 [pid 928] set_robust_list(0x7fe6f87d19a0, 24 [pid 930] <... set_robust_list resumed>) = 0 [pid 929] <... set_robust_list resumed>) = 0 [pid 928] <... set_robust_list resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 930] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 929] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 928] rt_sigprocmask(SIG_SETMASK, [], [pid 304] <... openat resumed>) = 3 [pid 930] <... prctl resumed>) = 0 [pid 929] <... prctl resumed>) = 0 [pid 928] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 930] setpgid(0, 0 [pid 929] setpgid(0, 0 [pid 304] <... ioctl resumed>) = 0 [pid 930] <... setpgid resumed>) = 0 [pid 929] <... setpgid resumed>) = 0 [pid 928] memfd_create("syzkaller", 0 [pid 304] close(3 [pid 930] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 929] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 304] <... close resumed>) = 0 [pid 930] <... openat resumed>) = 3 [pid 928] <... memfd_create resumed>) = 3 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 930] write(3, "1000", 4 [pid 929] <... openat resumed>) = 3 [pid 928] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 930] <... write resumed>) = 4 [pid 929] write(3, "1000", 4 [pid 928] <... mmap resumed>) = 0x7fe6f03b1000 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 932 [pid 931] <... close resumed>) = 0 [pid 930] close(3 [pid 929] <... write resumed>) = 4 executing program [pid 931] write(1, "executing program\n", 18) = 18 [pid 931] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 931] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 931] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 931] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 931] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 931] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 931] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 930] <... close resumed>) = 0 [pid 929] close(3 [pid 928] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 930] write(1, "executing program\n", 18 [pid 929] <... close resumed>) = 0 [pid 931] <... clone3 resumed> => {parent_tid=[933]}, 88) = 933 [pid 931] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 931] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 931] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}executing program executing program ./strace-static-x86_64: Process 933 attached [pid 928] <... write resumed>) = 262144 [pid 930] <... write resumed>) = 18 [pid 929] write(1, "executing program\n", 18 [pid 928] munmap(0x7fe6f03b1000, 138412032 [pid 930] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 929] <... write resumed>) = 18 [pid 930] <... futex resumed>) = 0 [pid 929] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 930] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 929] <... futex resumed>) = 0 [pid 930] <... rt_sigaction resumed>NULL, 8) = 0 [pid 929] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 930] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 929] <... rt_sigaction resumed>NULL, 8) = 0 [pid 930] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 928] <... munmap resumed>) = 0 [pid 930] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 929] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 928] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 930] <... mmap resumed>) = 0x7fe6f87b1000 [pid 929] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 930] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 929] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 930] <... mprotect resumed>) = 0 [pid 928] <... openat resumed>) = 4 [pid 929] <... mmap resumed>) = 0x7fe6f87b1000 [pid 930] rt_sigprocmask(SIG_BLOCK, ~[], [pid 929] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 928] ioctl(4, LOOP_SET_FD, 3 [pid 930] <... rt_sigprocmask resumed>[], 8) = 0 [pid 929] <... mprotect resumed>) = 0 [pid 928] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 930] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 929] rt_sigprocmask(SIG_BLOCK, ~[], [pid 928] ioctl(4, LOOP_CLR_FD [pid 930] <... clone3 resumed> => {parent_tid=[934]}, 88) = 934 [pid 929] <... rt_sigprocmask resumed>[], 8) = 0 [pid 928] <... ioctl resumed>) = 0 [pid 930] rt_sigprocmask(SIG_SETMASK, [], [pid 929] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 930] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 930] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 929] <... clone3 resumed> => {parent_tid=[935]}, 88) = 935 [pid 930] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 929] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 929] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 929] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 933] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 928] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 928] close(4 [pid 933] rt_sigprocmask(SIG_SETMASK, [], [pid 928] <... close resumed>) = 0 [pid 928] close(3 [pid 933] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 933] memfd_create("syzkaller", 0) = 3 [pid 933] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 928] <... close resumed>) = 0 [pid 928] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 927] <... futex resumed>) = 0 [pid 928] chdir("./file0" [pid 927] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 928] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 927] <... futex resumed>) = 0 ./strace-static-x86_64: Process 932 attached [pid 928] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 927] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 932] set_robust_list(0x5555636e06a0, 24 [pid 928] <... futex resumed>) = 0 [pid 927] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 932] <... set_robust_list resumed>) = 0 [pid 928] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 927] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 932] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 928] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 927] <... futex resumed>) = 0 [pid 932] <... prctl resumed>) = 0 [pid 928] creat("./bus", 000 [pid 927] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 928] <... creat resumed>) = 3 [pid 932] setpgid(0, 0./strace-static-x86_64: Process 935 attached [pid 928] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 935] set_robust_list(0x7fe6f87d19a0, 24 [pid 932] <... setpgid resumed>) = 0 [pid 928] <... futex resumed>) = 1 [pid 927] <... futex resumed>) = 0 [pid 932] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 935] <... set_robust_list resumed>) = 0 [pid 928] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 927] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 928] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 927] <... futex resumed>) = 0 [pid 935] rt_sigprocmask(SIG_SETMASK, [], [pid 932] <... openat resumed>) = 3 [pid 928] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 927] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 933] <... mmap resumed>) = 0x7fe6f03b1000 [pid 932] write(3, "1000", 4 [pid 928] <... openat resumed>) = 4 [pid 935] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 932] <... write resumed>) = 4 [pid 928] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 935] memfd_create("syzkaller", 0 [pid 932] close(3 [pid 928] <... futex resumed>) = 1 [pid 927] <... futex resumed>) = 0 [pid 935] <... memfd_create resumed>) = 3 [pid 932] <... close resumed>) = 0 [pid 928] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 927] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 935] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 932] write(1, "executing program\n", 18 [pid 928] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 927] <... futex resumed>) = 0 [pid 935] <... mmap resumed>) = 0x7fe6f03b1000 [pid 933] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 932] <... write resumed>) = 18 [pid 928] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 927] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 932] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 928] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 932] <... futex resumed>) = 0 [pid 928] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 932] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 928] <... futex resumed>) = 1 [pid 927] <... futex resumed>) = 0 [pid 932] <... rt_sigaction resumed>NULL, 8) = 0 [pid 928] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 927] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 932] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 928] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 927] <... futex resumed>) = 0 [pid 932] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 928] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 927] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 932] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 928] <... open resumed>) = 5 [pid 932] <... mmap resumed>) = 0x7fe6f87b1000 [pid 928] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 932] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 928] <... futex resumed>) = 1 [pid 927] <... futex resumed>) = 0 [pid 932] <... mprotect resumed>) = 0 [pid 928] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 927] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 932] rt_sigprocmask(SIG_BLOCK, ~[], [pid 928] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 927] <... futex resumed>) = 0 [pid 932] <... rt_sigprocmask resumed>[], 8) = 0 [pid 928] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 927] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 935] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 933] <... write resumed>) = 262144 [pid 932] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 928] <... mmap resumed>) = 0x20000000 [pid 928] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 927] <... futex resumed>) = 0 [pid 932] <... clone3 resumed> => {parent_tid=[936]}, 88) = 936 [pid 928] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 927] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 932] rt_sigprocmask(SIG_SETMASK, [], [pid 928] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 927] <... futex resumed>) = 0 [pid 932] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 928] memfd_create("syzkaller", 0 [pid 927] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 932] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 928] <... memfd_create resumed>) = 6 [pid 932] <... futex resumed>) = 0 [pid 928] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 932] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 928] <... mmap resumed>) = 0x7fe6f03b1000 ./strace-static-x86_64: Process 934 attached [pid 934] set_robust_list(0x7fe6f87d19a0, 24 [pid 933] munmap(0x7fe6f03b1000, 138412032 [pid 934] <... set_robust_list resumed>) = 0 [pid 933] <... munmap resumed>) = 0 [pid 934] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 933] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 934] memfd_create("syzkaller", 0 [pid 933] <... openat resumed>) = 4 [pid 928] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 934] <... memfd_create resumed>) = 3 [pid 933] ioctl(4, LOOP_SET_FD, 3 [pid 934] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 933] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 935] <... write resumed>) = 262144 [pid 934] <... mmap resumed>) = 0x7fe6f03b1000 [pid 933] ioctl(4, LOOP_CLR_FD [pid 928] <... write resumed>) = 131072 [pid 935] munmap(0x7fe6f03b1000, 138412032 [pid 934] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 933] <... ioctl resumed>) = 0 [pid 928] munmap(0x7fe6f03b1000, 138412032 [pid 934] <... write resumed>) = 262144 ./strace-static-x86_64: Process 936 attached [pid 936] set_robust_list(0x7fe6f87d19a0, 24 [pid 933] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 933] close(4) = 0 [pid 933] close(3) = 0 [pid 933] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 931] <... futex resumed>) = 0 [pid 933] chdir("./file0" [pid 931] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 933] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 931] <... futex resumed>) = 0 [pid 933] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 931] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 933] <... futex resumed>) = 0 [pid 931] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 933] creat("./bus", 000 [pid 931] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 935] <... munmap resumed>) = 0 [pid 933] <... creat resumed>) = 3 [pid 931] <... futex resumed>) = 0 [pid 928] <... munmap resumed>) = 0 [pid 935] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 933] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 931] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 928] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 935] <... openat resumed>) = 4 [pid 933] <... futex resumed>) = 0 [pid 931] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 935] ioctl(4, LOOP_SET_FD, 3 [pid 933] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 931] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 928] <... openat resumed>) = 7 [pid 935] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 933] <... openat resumed>) = 4 [pid 931] <... futex resumed>) = 0 [pid 928] ioctl(7, LOOP_SET_FD, 6 [pid 935] ioctl(4, LOOP_CLR_FD [pid 933] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 931] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 928] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 935] <... ioctl resumed>) = 0 [pid 933] <... futex resumed>) = 0 [pid 931] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 933] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 931] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 928] ioctl(7, LOOP_CLR_FD [pid 936] <... set_robust_list resumed>) = 0 [pid 934] munmap(0x7fe6f03b1000, 138412032 [pid 933] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 931] <... futex resumed>) = 0 [pid 928] <... ioctl resumed>) = 0 [pid 936] rt_sigprocmask(SIG_SETMASK, [], [pid 934] <... munmap resumed>) = 0 [pid 933] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 931] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 936] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 934] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 933] <... futex resumed>) = 0 [pid 931] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 936] memfd_create("syzkaller", 0 [pid 935] ioctl(4, LOOP_SET_FD, 3 [pid 934] <... openat resumed>) = 4 [pid 933] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 931] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 936] <... memfd_create resumed>) = 3 [pid 935] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 934] ioctl(4, LOOP_SET_FD, 3 [pid 933] <... open resumed>) = 5 [pid 931] <... futex resumed>) = 0 [pid 936] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 935] close(4 [pid 934] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 933] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 931] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 936] <... mmap resumed>) = 0x7fe6f03b1000 [pid 935] <... close resumed>) = 0 [pid 934] ioctl(4, LOOP_CLR_FD [pid 933] <... futex resumed>) = 0 [pid 931] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 936] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 935] close(3 [pid 934] <... ioctl resumed>) = 0 [pid 933] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 931] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 933] <... mmap resumed>) = 0x20000000 [pid 931] <... futex resumed>) = 0 [pid 933] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 931] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 933] <... futex resumed>) = 0 [pid 931] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 933] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 931] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 933] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 931] <... futex resumed>) = 0 [pid 933] memfd_create("syzkaller", 0 [pid 931] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 933] <... memfd_create resumed>) = 6 [pid 934] ioctl(4, LOOP_SET_FD, 3 [pid 933] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 934] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 933] <... mmap resumed>) = 0x7fe6f03b1000 [pid 934] close(4 [pid 933] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 936] <... write resumed>) = 262144 [pid 935] <... close resumed>) = 0 [pid 934] <... close resumed>) = 0 [pid 933] <... write resumed>) = 131072 [pid 928] ioctl(7, LOOP_SET_FD, 6 [pid 935] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 934] close(3 [pid 933] munmap(0x7fe6f03b1000, 138412032 [pid 928] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 935] <... futex resumed>) = 1 [pid 934] <... close resumed>) = 0 [pid 933] <... munmap resumed>) = 0 [pid 929] <... futex resumed>) = 0 [pid 928] close(7 [pid 935] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 934] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 933] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 929] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 928] <... close resumed>) = 0 [pid 936] munmap(0x7fe6f03b1000, 138412032 [pid 935] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 934] <... futex resumed>) = 1 [pid 933] <... openat resumed>) = 7 [pid 930] <... futex resumed>) = 0 [pid 929] <... futex resumed>) = 0 [pid 928] close(6 [pid 936] <... munmap resumed>) = 0 [pid 935] chdir("./file0" [pid 934] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 933] ioctl(7, LOOP_SET_FD, 6 [pid 930] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 929] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 928] <... close resumed>) = 0 [pid 930] <... futex resumed>) = 0 [pid 935] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 930] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 935] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 928] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 935] <... futex resumed>) = 1 [pid 929] <... futex resumed>) = 0 [pid 936] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 935] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 934] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 933] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 929] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 928] <... futex resumed>) = 1 [pid 927] <... futex resumed>) = 0 [pid 936] <... openat resumed>) = 4 [pid 935] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 934] chdir("./file0" [pid 933] ioctl(7, LOOP_CLR_FD [pid 929] <... futex resumed>) = 0 [pid 928] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 927] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 936] ioctl(4, LOOP_SET_FD, 3 [pid 935] creat("./bus", 000 [pid 934] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 933] <... ioctl resumed>) = 0 [pid 929] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 928] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 927] <... futex resumed>) = 0 [pid 936] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 935] <... creat resumed>) = 3 [pid 934] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 928] mknod(0x20000000, 000 [pid 927] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 936] ioctl(4, LOOP_CLR_FD [pid 935] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 934] <... futex resumed>) = 1 [pid 930] <... futex resumed>) = 0 [pid 928] <... mknod resumed>) = -1 EEXIST (File exists) [pid 936] <... ioctl resumed>) = 0 [pid 935] <... futex resumed>) = 1 [pid 934] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 930] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 929] <... futex resumed>) = 0 [pid 928] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 935] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 934] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 935] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 934] creat("./bus", 000 [pid 930] <... futex resumed>) = 0 [pid 929] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 928] <... futex resumed>) = 1 [pid 927] <... futex resumed>) = 0 [pid 935] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 934] <... creat resumed>) = 3 [pid 930] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 929] <... futex resumed>) = 0 [pid 928] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 927] exit_group(0 [pid 935] <... openat resumed>) = 4 [pid 934] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 933] ioctl(7, LOOP_SET_FD, 6 [pid 930] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 929] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 928] <... futex resumed>) = ? [pid 927] <... exit_group resumed>) = ? [pid 936] ioctl(4, LOOP_SET_FD, 3 [pid 935] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 934] <... futex resumed>) = 0 [pid 933] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 930] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 929] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 936] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 935] <... futex resumed>) = 0 [pid 934] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 933] close(7 [pid 930] <... futex resumed>) = 0 [pid 929] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 928] +++ exited with 0 +++ [pid 927] +++ exited with 0 +++ [pid 936] close(4 [pid 935] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 934] <... openat resumed>) = 4 [pid 933] <... close resumed>) = 0 [pid 936] <... close resumed>) = 0 [pid 934] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 933] close(6 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=927, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 936] close(3 [pid 934] <... futex resumed>) = 0 [pid 933] <... close resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 936] <... close resumed>) = 0 [pid 934] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 933] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... openat resumed>) = 3 [pid 936] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 933] <... futex resumed>) = 1 [pid 931] <... futex resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 936] <... futex resumed>) = 1 [pid 933] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 932] <... futex resumed>) = 0 [pid 931] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 930] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 929] <... futex resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 936] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 933] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 932] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 931] <... futex resumed>) = 0 [pid 930] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 929] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] close(3 [pid 936] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 933] mknod(0x20000000, 000 [pid 932] <... futex resumed>) = 0 [pid 931] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 930] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... close resumed>) = 0 [pid 936] chdir("./file0" [pid 935] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 934] <... futex resumed>) = 0 [pid 933] <... mknod resumed>) = -1 EEXIST (File exists) [pid 932] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 930] <... futex resumed>) = 1 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 936] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 935] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 934] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 933] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 930] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 936] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 935] <... futex resumed>) = 1 [pid 934] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 933] <... futex resumed>) = 1 [pid 931] <... futex resumed>) = 0 [pid 929] <... futex resumed>) = 0 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 937 [pid 936] <... futex resumed>) = 1 [pid 935] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 934] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 933] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 932] <... futex resumed>) = 0 [pid 931] exit_group(0 [pid 929] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 936] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 935] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 934] <... futex resumed>) = 1 [pid 933] <... futex resumed>) = ? [pid 932] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 931] <... exit_group resumed>) = ? [pid 930] <... futex resumed>) = 0 [pid 929] <... futex resumed>) = 0 [pid 936] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 935] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 934] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 933] +++ exited with 0 +++ [pid 932] <... futex resumed>) = 0 [pid 931] +++ exited with 0 +++ [pid 930] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 929] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 936] creat("./bus", 000 [pid 935] <... open resumed>) = 5 [pid 934] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 932] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 930] <... futex resumed>) = 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=931, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 937 attached [pid 936] <... creat resumed>) = 3 [pid 935] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 934] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 930] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 937] set_robust_list(0x5555636e06a0, 24 [pid 936] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 935] <... futex resumed>) = 1 [pid 934] <... open resumed>) = 5 [pid 929] <... futex resumed>) = 0 [pid 936] <... futex resumed>) = 1 [pid 934] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 932] <... futex resumed>) = 0 [pid 937] <... set_robust_list resumed>) = 0 [pid 936] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 935] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 934] <... futex resumed>) = 1 [pid 932] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 930] <... futex resumed>) = 0 [pid 929] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 936] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 935] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 934] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 932] <... futex resumed>) = 0 [pid 930] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 929] <... futex resumed>) = 0 [pid 937] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 936] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 935] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 934] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 932] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 937] <... prctl resumed>) = 0 [pid 936] <... openat resumed>) = 4 [pid 934] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 930] <... futex resumed>) = 0 [pid 929] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 937] setpgid(0, 0 [pid 936] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 935] <... mmap resumed>) = 0x20000000 [pid 934] <... mmap resumed>) = 0x20000000 [pid 930] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 937] <... setpgid resumed>) = 0 [pid 936] <... futex resumed>) = 1 [pid 935] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 934] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 932] <... futex resumed>) = 0 [pid 930] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 936] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 935] <... futex resumed>) = 1 [pid 934] <... futex resumed>) = 0 [pid 932] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 929] <... futex resumed>) = 0 [pid 937] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 936] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 935] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 934] memfd_create("syzkaller", 0 [pid 932] <... futex resumed>) = 0 [pid 930] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 937] <... openat resumed>) = 3 [pid 936] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 935] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 934] <... memfd_create resumed>) = 6 [pid 932] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 930] <... futex resumed>) = 0 [pid 929] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 937] write(3, "1000", 4 [pid 936] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 934] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 936] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 934] <... mmap resumed>) = 0x7fe6f03b1000 [pid 936] <... futex resumed>) = 1 [pid 934] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 932] <... futex resumed>) = 0 [pid 936] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 934] <... write resumed>) = 131072 [pid 932] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 936] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 934] munmap(0x7fe6f03b1000, 138412032 [pid 932] <... futex resumed>) = 0 [pid 936] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 934] <... munmap resumed>) = 0 [pid 932] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 936] <... open resumed>) = 5 [pid 934] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 936] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 934] <... openat resumed>) = 7 [pid 936] <... futex resumed>) = 1 [pid 934] ioctl(7, LOOP_SET_FD, 6 [pid 932] <... futex resumed>) = 0 [pid 936] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 934] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 932] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 936] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 934] ioctl(7, LOOP_CLR_FD [pid 932] <... futex resumed>) = 0 [pid 936] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 934] <... ioctl resumed>) = 0 [pid 932] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... restart_syscall resumed>) = 0 [pid 937] <... write resumed>) = 4 [pid 936] <... mmap resumed>) = 0x20000000 [pid 935] memfd_create("syzkaller", 0 [pid 930] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 929] <... futex resumed>) = 0 [pid 937] close(3 [pid 936] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 935] <... memfd_create resumed>) = 6 [pid 929] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 937] <... close resumed>) = 0 [pid 936] <... futex resumed>) = 1 [pid 935] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 932] <... futex resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 937] write(1, "executing program\n", 18 [pid 936] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULLexecuting program [pid 935] <... mmap resumed>) = 0x7fe6f03b1000 [pid 932] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... openat resumed>) = 3 [pid 937] <... write resumed>) = 18 [pid 936] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 934] ioctl(7, LOOP_SET_FD, 6 [pid 932] <... futex resumed>) = 0 [pid 303] ioctl(3, LOOP_CLR_FD [pid 936] memfd_create("syzkaller", 0 [pid 934] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 932] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 303] <... ioctl resumed>) = 0 [pid 936] <... memfd_create resumed>) = 6 [pid 934] close(7 [pid 303] close(3 [pid 936] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 934] <... close resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 936] <... mmap resumed>) = 0x7fe6f03b1000 [pid 934] close(6 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 937] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 936] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 935] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 934] <... close resumed>) = 0 [pid 936] <... write resumed>) = 131072 [pid 934] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 938 [pid 936] munmap(0x7fe6f03b1000, 138412032 [pid 934] <... futex resumed>) = 1 [pid 937] <... futex resumed>) = 0 [pid 936] <... munmap resumed>) = 0 [pid 935] <... write resumed>) = 131072 [pid 934] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 930] <... futex resumed>) = 0 [pid 937] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 936] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 935] munmap(0x7fe6f03b1000, 138412032 [pid 930] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 936] <... openat resumed>) = 7 [pid 936] ioctl(7, LOOP_SET_FD, 6 [pid 935] <... munmap resumed>) = 0 [pid 937] <... rt_sigaction resumed>NULL, 8) = 0 [pid 936] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 934] <... futex resumed>) = 0 [pid 930] <... futex resumed>) = 1 [pid 937] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 936] ioctl(7, LOOP_CLR_FD [pid 935] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 934] mknod(0x20000000, 000 [pid 930] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 937] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 936] <... ioctl resumed>) = 0 [pid 935] <... openat resumed>) = 7 [pid 934] <... mknod resumed>) = -1 EEXIST (File exists) [pid 937] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 935] ioctl(7, LOOP_SET_FD, 6 [pid 934] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 937] <... mmap resumed>) = 0x7fe6f87b1000 [pid 935] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 934] <... futex resumed>) = 1 [pid 930] <... futex resumed>) = 0 [pid 937] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 935] ioctl(7, LOOP_CLR_FD [pid 934] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 937] <... mprotect resumed>) = 0 [pid 935] <... ioctl resumed>) = 0 [pid 930] exit_group(0./strace-static-x86_64: Process 938 attached [pid 937] rt_sigprocmask(SIG_BLOCK, ~[], [pid 934] <... futex resumed>) = ? [pid 930] <... exit_group resumed>) = ? [pid 937] <... rt_sigprocmask resumed>[], 8) = 0 [pid 934] +++ exited with 0 +++ [pid 936] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 936] close(7) = 0 [pid 936] close(6 [pid 937] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 936] <... close resumed>) = 0 [pid 930] +++ exited with 0 +++ [pid 936] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=930, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 937] <... clone3 resumed> => {parent_tid=[939]}, 88) = 939 [pid 936] <... futex resumed>) = 1 [pid 935] ioctl(7, LOOP_SET_FD, 6 [pid 932] <... futex resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 937] rt_sigprocmask(SIG_SETMASK, [], [pid 936] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 935] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 932] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 937] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 936] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 935] close(7 [pid 932] <... futex resumed>) = 0 [pid 937] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 936] mknod(0x20000000, 000 [pid 935] <... close resumed>) = 0 [pid 932] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 937] <... futex resumed>) = 0 [pid 936] <... mknod resumed>) = -1 EEXIST (File exists) [pid 935] close(6 [pid 937] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 936] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 932] <... futex resumed>) = 0 [pid 936] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 935] <... close resumed>) = 0 [pid 932] exit_group(0 [pid 936] <... futex resumed>) = ? [pid 935] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 932] <... exit_group resumed>) = ? [pid 305] <... restart_syscall resumed>) = 0 [pid 936] +++ exited with 0 +++ [pid 935] <... futex resumed>) = 1 [pid 932] +++ exited with 0 +++ [pid 929] <... futex resumed>) = 0 [pid 935] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 929] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 938] set_robust_list(0x5555636e06a0, 24 [pid 935] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 929] <... futex resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=932, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 938] <... set_robust_list resumed>) = 0 [pid 935] mknod(0x20000000, 000 [pid 929] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... openat resumed>) = 3 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR./strace-static-x86_64: Process 939 attached [pid 938] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 935] <... mknod resumed>) = -1 EEXIST (File exists) [pid 305] ioctl(3, LOOP_CLR_FD [pid 304] <... openat resumed>) = 3 [pid 939] set_robust_list(0x7fe6f87d19a0, 24 [pid 938] <... prctl resumed>) = 0 [pid 935] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... ioctl resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 939] <... set_robust_list resumed>) = 0 [pid 938] setpgid(0, 0 [pid 935] <... futex resumed>) = 1 [pid 929] <... futex resumed>) = 0 [pid 305] close(3 [pid 304] <... ioctl resumed>) = 0 [pid 939] rt_sigprocmask(SIG_SETMASK, [], [pid 938] <... setpgid resumed>) = 0 [pid 935] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 929] exit_group(0 [pid 305] <... close resumed>) = 0 [pid 304] close(3 [pid 939] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 938] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 935] <... futex resumed>) = ? [pid 929] <... exit_group resumed>) = ? [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 304] <... close resumed>) = 0 [pid 939] memfd_create("syzkaller", 0 [pid 938] <... openat resumed>) = 3 [pid 935] +++ exited with 0 +++ [pid 929] +++ exited with 0 +++ [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 938] write(3, "1000", 4 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=929, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 940 [pid 938] <... write resumed>) = 4 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 941 executing program [pid 938] close(3) = 0 [pid 938] write(1, "executing program\n", 18) = 18 [pid 938] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 938] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 938] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 938] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 938] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 938] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 938] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[942]}, 88) = 942 [pid 938] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 938] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 938] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 940 attached [pid 940] set_robust_list(0x5555636e06a0, 24) = 0 [pid 940] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 940] setpgid(0, 0) = 0 [pid 940] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 940] write(3, "1000", 4) = 4 [pid 940] close(3) = 0 executing program [pid 940] write(1, "executing program\n", 18) = 18 [pid 940] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 940] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 940] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 940] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 940] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 940] rt_sigprocmask(SIG_BLOCK, ~[], ./strace-static-x86_64: Process 941 attached [pid 941] set_robust_list(0x5555636e06a0, 24) = 0 [pid 941] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 940] <... rt_sigprocmask resumed>[], 8) = 0 [pid 940] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 306] <... restart_syscall resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 943 [pid 941] <... prctl resumed>) = 0 [pid 941] setpgid(0, 0) = 0 [pid 941] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 940] <... clone3 resumed> => {parent_tid=[944]}, 88) = 944 [pid 940] rt_sigprocmask(SIG_SETMASK, [], [pid 941] <... openat resumed>) = 3 [pid 940] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 940] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 941] write(3, "1000", 4 [pid 940] <... futex resumed>) = 0 [pid 941] <... write resumed>) = 4 [pid 940] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 941] close(3executing program ) = 0 [pid 941] write(1, "executing program\n", 18 [pid 939] <... memfd_create resumed>) = 3 ./strace-static-x86_64: Process 944 attached ./strace-static-x86_64: Process 942 attached [pid 939] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 944] set_robust_list(0x7fe6f87d19a0, 24 [pid 942] set_robust_list(0x7fe6f87d19a0, 24 [pid 941] <... write resumed>) = 18 [pid 939] <... mmap resumed>) = 0x7fe6f03b1000 [pid 941] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 941] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 941] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 941] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 941] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 941] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 941] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[945]}, 88) = 945 [pid 944] <... set_robust_list resumed>) = 0 [pid 942] <... set_robust_list resumed>) = 0 [pid 941] rt_sigprocmask(SIG_SETMASK, [], [pid 939] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 941] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 941] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 941] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 943 attached [pid 943] set_robust_list(0x5555636e06a0, 24 [pid 939] <... write resumed>) = 262144 [pid 944] rt_sigprocmask(SIG_SETMASK, [], [pid 942] rt_sigprocmask(SIG_SETMASK, [], [pid 939] munmap(0x7fe6f03b1000, 138412032 [pid 944] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 942] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 943] <... set_robust_list resumed>) = 0 [pid 939] <... munmap resumed>) = 0 [pid 944] memfd_create("syzkaller", 0) = 3 [pid 943] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 942] memfd_create("syzkaller", 0 [pid 939] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 944] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 943] <... prctl resumed>) = 0 [pid 942] <... memfd_create resumed>) = 3 [pid 939] <... openat resumed>) = 4 [pid 944] <... mmap resumed>) = 0x7fe6f03b1000 [pid 942] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 939] ioctl(4, LOOP_SET_FD, 3 [pid 943] setpgid(0, 0) = 0 [pid 943] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 943] write(3, "1000", 4executing program ) = 4 [pid 943] close(3) = 0 [pid 943] write(1, "executing program\n", 18) = 18 [pid 943] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 943] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 943] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 944] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 943] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 942] <... mmap resumed>) = 0x7fe6f03b1000 [pid 939] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 943] <... mmap resumed>) = 0x7fe6f87b1000 [pid 943] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 943] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 943] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[946]}, 88) = 946 [pid 943] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 943] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 943] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 945 attached [pid 945] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 942] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 939] ioctl(4, LOOP_CLR_FD [pid 945] rt_sigprocmask(SIG_SETMASK, [], [pid 939] <... ioctl resumed>) = 0 [pid 945] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 945] memfd_create("syzkaller", 0) = 3 [pid 945] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 944] <... write resumed>) = 262144 [pid 945] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 942] <... write resumed>) = 262144 [pid 944] munmap(0x7fe6f03b1000, 138412032 [pid 942] munmap(0x7fe6f03b1000, 138412032 [pid 939] ioctl(4, LOOP_SET_FD, 3 [pid 945] <... write resumed>) = 262144 [pid 944] <... munmap resumed>) = 0 [pid 942] <... munmap resumed>) = 0 [pid 939] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 944] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 942] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 939] close(4 [pid 944] <... openat resumed>) = 4 [pid 942] <... openat resumed>) = 4 [pid 939] <... close resumed>) = 0 [pid 944] ioctl(4, LOOP_SET_FD, 3 [pid 942] ioctl(4, LOOP_SET_FD, 3 [pid 939] close(3 [pid 945] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 945] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 944] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 942] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 939] <... close resumed>) = 0 [pid 944] ioctl(4, LOOP_CLR_FD [pid 942] ioctl(4, LOOP_CLR_FD [pid 939] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 944] <... ioctl resumed>) = 0 [pid 939] <... futex resumed>) = 1 [pid 942] <... ioctl resumed>) = 0 [pid 937] <... futex resumed>) = 0 [pid 939] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 937] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 939] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 937] <... futex resumed>) = 0 [pid 939] chdir("./file0" [pid 937] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 939] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 939] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 937] <... futex resumed>) = 0 [pid 939] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 937] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 939] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 937] <... futex resumed>) = 0 [pid 939] creat("./bus", 000 [pid 937] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 945] <... openat resumed>) = 4 [pid 939] <... creat resumed>) = 3 [pid 944] ioctl(4, LOOP_SET_FD, 3 [pid 942] ioctl(4, LOOP_SET_FD, 3 [pid 939] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 944] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 942] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 944] close(4 [pid 942] close(4 [pid 939] <... futex resumed>) = 1 [pid 937] <... futex resumed>) = 0 [pid 944] <... close resumed>) = 0 [pid 939] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 937] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 944] close(3 [pid 942] <... close resumed>) = 0 [pid 939] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 937] <... futex resumed>) = 0 [pid 939] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 937] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 942] close(3 [pid 939] <... openat resumed>) = 4 [pid 945] ioctl(4, LOOP_SET_FD, 3 [pid 939] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 945] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 939] <... futex resumed>) = 1 [pid 937] <... futex resumed>) = 0 [pid 939] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 937] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 939] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 937] <... futex resumed>) = 0 [pid 939] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 937] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 945] ioctl(4, LOOP_CLR_FD) = 0 [pid 939] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 939] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 937] <... futex resumed>) = 0 [pid 939] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 937] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 939] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 937] <... futex resumed>) = 0 [pid 939] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 937] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 939] <... open resumed>) = 5 [pid 939] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 939] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 937] <... futex resumed>) = 0 [pid 937] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 942] <... close resumed>) = 0 [pid 939] <... futex resumed>) = 0 [pid 937] <... futex resumed>) = 1 [pid 945] ioctl(4, LOOP_SET_FD, 3 [pid 942] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 939] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 937] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 945] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 944] <... close resumed>) = 0 [pid 938] <... futex resumed>) = 0 [pid 945] close(4 [pid 944] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 942] <... futex resumed>) = 1 [pid 939] <... mmap resumed>) = 0x20000000 [pid 938] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 946 attached [pid 945] <... close resumed>) = 0 [pid 944] <... futex resumed>) = 1 [pid 942] chdir("./file0" [pid 940] <... futex resumed>) = 0 [pid 939] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 938] <... futex resumed>) = 0 [pid 946] set_robust_list(0x7fe6f87d19a0, 24 [pid 945] close(3 [pid 944] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 942] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 940] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 939] <... futex resumed>) = 1 [pid 938] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 937] <... futex resumed>) = 0 [pid 946] <... set_robust_list resumed>) = 0 [pid 945] <... close resumed>) = 0 [pid 944] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 942] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 940] <... futex resumed>) = 0 [pid 939] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 938] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 937] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 946] rt_sigprocmask(SIG_SETMASK, [], [pid 945] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 944] chdir("./file0" [pid 942] <... futex resumed>) = 0 [pid 940] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 939] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 938] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 937] <... futex resumed>) = 0 [pid 946] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 945] <... futex resumed>) = 1 [pid 944] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 942] creat("./bus", 000 [pid 941] <... futex resumed>) = 0 [pid 939] memfd_create("syzkaller", 0 [pid 938] <... futex resumed>) = 0 [pid 937] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 946] memfd_create("syzkaller", 0 [pid 945] chdir("./file0" [pid 944] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 942] <... creat resumed>) = 3 [pid 941] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 939] <... memfd_create resumed>) = 6 [pid 938] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 946] <... memfd_create resumed>) = 3 [pid 945] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 944] <... futex resumed>) = 1 [pid 942] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 941] <... futex resumed>) = 0 [pid 940] <... futex resumed>) = 0 [pid 939] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 938] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 946] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 945] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 944] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 942] <... futex resumed>) = 0 [pid 941] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 940] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 939] <... mmap resumed>) = 0x7fe6f03b1000 [pid 938] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 946] <... mmap resumed>) = 0x7fe6f03b1000 [pid 945] <... futex resumed>) = 0 [pid 944] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 942] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 941] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 940] <... futex resumed>) = 0 [pid 938] <... futex resumed>) = 0 [pid 945] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 941] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 940] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 938] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 945] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 941] <... futex resumed>) = 0 [pid 945] creat("./bus", 000 [pid 944] creat("./bus", 000 [pid 941] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 939] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 945] <... creat resumed>) = 3 [pid 944] <... creat resumed>) = 3 [pid 942] <... openat resumed>) = 4 [pid 945] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 944] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 945] <... futex resumed>) = 1 [pid 942] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 941] <... futex resumed>) = 0 [pid 945] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 941] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 945] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 941] <... futex resumed>) = 0 [pid 945] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 944] <... futex resumed>) = 1 [pid 942] <... futex resumed>) = 1 [pid 941] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 940] <... futex resumed>) = 0 [pid 939] <... write resumed>) = 131072 [pid 938] <... futex resumed>) = 0 [pid 945] <... openat resumed>) = 4 [pid 944] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 942] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 940] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 938] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 945] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 944] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 942] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 940] <... futex resumed>) = 0 [pid 939] munmap(0x7fe6f03b1000, 138412032 [pid 938] <... futex resumed>) = 0 [pid 945] <... futex resumed>) = 1 [pid 944] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 942] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 941] <... futex resumed>) = 0 [pid 940] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 938] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 945] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 944] <... openat resumed>) = 4 [pid 942] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 941] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 946] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 945] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 944] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 942] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 941] <... futex resumed>) = 0 [pid 939] <... munmap resumed>) = 0 [pid 945] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 944] <... futex resumed>) = 1 [pid 942] <... futex resumed>) = 1 [pid 941] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 940] <... futex resumed>) = 0 [pid 939] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 938] <... futex resumed>) = 0 [pid 945] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 944] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 942] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 940] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 938] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 946] <... write resumed>) = 262144 [pid 945] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 944] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 942] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 940] <... futex resumed>) = 0 [pid 939] <... openat resumed>) = 7 [pid 938] <... futex resumed>) = 0 [pid 946] munmap(0x7fe6f03b1000, 138412032 [pid 945] <... futex resumed>) = 1 [pid 944] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 942] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 941] <... futex resumed>) = 0 [pid 940] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 939] ioctl(7, LOOP_SET_FD, 6 [pid 938] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 946] <... munmap resumed>) = 0 [pid 945] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 944] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 942] <... open resumed>) = 5 [pid 941] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 946] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 945] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 944] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 942] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 941] <... futex resumed>) = 0 [pid 939] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 946] <... openat resumed>) = 4 [pid 945] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 944] <... futex resumed>) = 1 [pid 942] <... futex resumed>) = 1 [pid 941] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 940] <... futex resumed>) = 0 [pid 938] <... futex resumed>) = 0 [pid 945] <... open resumed>) = 5 [pid 940] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 938] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 945] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 940] <... futex resumed>) = 0 [pid 938] <... futex resumed>) = 0 [pid 945] <... futex resumed>) = 1 [pid 941] <... futex resumed>) = 0 [pid 940] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 938] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 945] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 941] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 945] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 941] <... futex resumed>) = 0 [pid 945] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 941] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 945] <... mmap resumed>) = 0x20000000 [pid 945] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 941] <... futex resumed>) = 0 [pid 945] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 941] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 945] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 941] <... futex resumed>) = 0 [pid 945] memfd_create("syzkaller", 0 [pid 941] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 945] <... memfd_create resumed>) = 6 [pid 945] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 945] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 946] ioctl(4, LOOP_SET_FD, 3 [pid 945] <... write resumed>) = 131072 [pid 944] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 942] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 939] ioctl(7, LOOP_CLR_FD [pid 946] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 945] munmap(0x7fe6f03b1000, 138412032 [pid 944] <... open resumed>) = 5 [pid 946] ioctl(4, LOOP_CLR_FD [pid 945] <... munmap resumed>) = 0 [pid 944] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 942] <... mmap resumed>) = 0x20000000 [pid 939] <... ioctl resumed>) = 0 [pid 946] <... ioctl resumed>) = 0 [pid 945] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 944] <... futex resumed>) = 1 [pid 942] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 940] <... futex resumed>) = 0 [pid 945] <... openat resumed>) = 7 [pid 944] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 942] <... futex resumed>) = 1 [pid 940] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 938] <... futex resumed>) = 0 [pid 945] ioctl(7, LOOP_SET_FD, 6 [pid 944] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 942] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 940] <... futex resumed>) = 0 [pid 938] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 945] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 944] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 942] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 940] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 938] <... futex resumed>) = 0 [pid 945] ioctl(7, LOOP_CLR_FD [pid 938] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 945] <... ioctl resumed>) = 0 [pid 944] <... mmap resumed>) = 0x20000000 [pid 942] memfd_create("syzkaller", 0 [pid 944] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 946] ioctl(4, LOOP_SET_FD, 3 [pid 942] <... memfd_create resumed>) = 6 [pid 939] ioctl(7, LOOP_SET_FD, 6 [pid 946] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 944] <... futex resumed>) = 1 [pid 942] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 940] <... futex resumed>) = 0 [pid 939] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 946] close(4 [pid 944] memfd_create("syzkaller", 0 [pid 942] <... mmap resumed>) = 0x7fe6f03b1000 [pid 940] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 939] close(7 [pid 946] <... close resumed>) = 0 [pid 944] <... memfd_create resumed>) = 6 [pid 940] <... futex resumed>) = 0 [pid 940] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 945] ioctl(7, LOOP_SET_FD, 6 [pid 946] close(3 [pid 945] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 944] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 942] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 939] <... close resumed>) = 0 [pid 946] <... close resumed>) = 0 [pid 945] close(7 [pid 944] <... mmap resumed>) = 0x7fe6f03b1000 [pid 942] <... write resumed>) = 131072 [pid 939] close(6 [pid 946] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 945] <... close resumed>) = 0 [pid 944] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 942] munmap(0x7fe6f03b1000, 138412032 [pid 939] <... close resumed>) = 0 [pid 946] <... futex resumed>) = 1 [pid 945] close(6 [pid 944] <... write resumed>) = 131072 [pid 943] <... futex resumed>) = 0 [pid 942] <... munmap resumed>) = 0 [pid 939] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 946] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 944] munmap(0x7fe6f03b1000, 138412032 [pid 942] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 939] <... futex resumed>) = 1 [pid 937] <... futex resumed>) = 0 [pid 945] <... close resumed>) = 0 [pid 944] <... munmap resumed>) = 0 [pid 943] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 942] <... openat resumed>) = 7 [pid 939] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 937] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 946] <... futex resumed>) = 0 [pid 945] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 944] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 943] <... futex resumed>) = 1 [pid 942] ioctl(7, LOOP_SET_FD, 6 [pid 939] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 937] <... futex resumed>) = 0 [pid 946] chdir("./file0" [pid 945] <... futex resumed>) = 1 [pid 944] <... openat resumed>) = 7 [pid 943] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 942] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 941] <... futex resumed>) = 0 [pid 939] mknod(0x20000000, 000 [pid 937] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 946] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 945] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 944] ioctl(7, LOOP_SET_FD, 6 [pid 942] ioctl(7, LOOP_CLR_FD [pid 941] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 939] <... mknod resumed>) = -1 EEXIST (File exists) [pid 946] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 945] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 944] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 942] <... ioctl resumed>) = 0 [pid 941] <... futex resumed>) = 0 [pid 939] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 946] <... futex resumed>) = 1 [pid 945] mknod(0x20000000, 000 [pid 944] ioctl(7, LOOP_CLR_FD [pid 943] <... futex resumed>) = 0 [pid 941] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 939] <... futex resumed>) = 1 [pid 937] <... futex resumed>) = 0 [pid 946] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 945] <... mknod resumed>) = -1 EEXIST (File exists) [pid 944] <... ioctl resumed>) = 0 [pid 943] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 939] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 937] exit_group(0 [pid 946] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 945] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 943] <... futex resumed>) = 0 [pid 939] <... futex resumed>) = ? [pid 937] <... exit_group resumed>) = ? [pid 946] creat("./bus", 000 [pid 945] <... futex resumed>) = 1 [pid 943] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 941] <... futex resumed>) = 0 [pid 939] +++ exited with 0 +++ [pid 937] +++ exited with 0 +++ [pid 946] <... creat resumed>) = 3 [pid 945] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 942] ioctl(7, LOOP_SET_FD, 6 [pid 941] exit_group(0 [pid 946] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 944] ioctl(7, LOOP_SET_FD, 6 [pid 942] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 941] <... exit_group resumed>) = ? [pid 945] <... futex resumed>) = -1 EBUSY (Device or resource busy) [pid 946] <... futex resumed>) = 1 [pid 944] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 943] <... futex resumed>) = 0 [pid 942] close(7 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=937, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 946] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 944] close(7 [pid 942] <... close resumed>) = 0 [pid 944] <... close resumed>) = 0 [pid 942] close(6 [pid 945] +++ exited with 0 +++ [pid 944] close(6 [pid 943] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 942] <... close resumed>) = 0 [pid 941] +++ exited with 0 +++ [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 946] <... futex resumed>) = 0 [pid 944] <... close resumed>) = 0 [pid 943] <... futex resumed>) = 1 [pid 942] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 946] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 944] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 943] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 942] <... futex resumed>) = 1 [pid 938] <... futex resumed>) = 0 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=941, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 946] <... openat resumed>) = 4 [pid 944] <... futex resumed>) = 1 [pid 942] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 940] <... futex resumed>) = 0 [pid 938] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 946] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 944] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 942] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 940] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 938] <... futex resumed>) = 0 [pid 946] <... futex resumed>) = 1 [pid 944] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 943] <... futex resumed>) = 0 [pid 942] mknod(0x20000000, 000 [pid 940] <... futex resumed>) = 0 [pid 938] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 946] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 944] mknod(0x20000000, 000 [pid 943] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 942] <... mknod resumed>) = -1 EEXIST (File exists) [pid 940] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 946] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 944] <... mknod resumed>) = -1 EEXIST (File exists) [pid 943] <... futex resumed>) = 0 [pid 942] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 946] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 944] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 943] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 942] <... futex resumed>) = 1 [pid 938] <... futex resumed>) = 0 [pid 946] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 944] <... futex resumed>) = 1 [pid 942] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 940] <... futex resumed>) = 0 [pid 946] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 944] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 938] exit_group(0 [pid 946] <... futex resumed>) = 1 [pid 943] <... futex resumed>) = 0 [pid 940] exit_group(0 [pid 942] <... futex resumed>) = ? [pid 938] <... exit_group resumed>) = ? [pid 946] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 944] <... futex resumed>) = ? [pid 943] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 942] +++ exited with 0 +++ [pid 940] <... exit_group resumed>) = ? [pid 946] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 944] +++ exited with 0 +++ [pid 946] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 946] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 946] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL) = 0 [pid 943] <... futex resumed>) = 1 [pid 938] +++ exited with 0 +++ [pid 946] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 943] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 940] +++ exited with 0 +++ [pid 943] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 302] <... restart_syscall resumed>) = 0 [pid 943] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=940, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=938, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 946] <... futex resumed>) = 0 [pid 943] <... futex resumed>) = 1 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 946] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 943] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 946] <... mmap resumed>) = 0x20000000 [pid 946] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 946] <... futex resumed>) = 1 [pid 943] <... futex resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 946] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 943] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] ioctl(3, LOOP_CLR_FD [pid 946] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 943] <... futex resumed>) = 0 [pid 946] memfd_create("syzkaller", 0 [pid 302] <... ioctl resumed>) = 0 [pid 943] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 946] <... memfd_create resumed>) = 6 [pid 302] close(3 [pid 946] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 302] <... close resumed>) = 0 [pid 946] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 305] <... restart_syscall resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 946] <... write resumed>) = 131072 [pid 304] <... restart_syscall resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 946] munmap(0x7fe6f03b1000, 138412032 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 947 [pid 946] <... munmap resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 946] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 305] <... openat resumed>) = 3 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 946] <... openat resumed>) = 7 [pid 305] ioctl(3, LOOP_CLR_FD [pid 304] <... openat resumed>) = 3 [pid 303] <... openat resumed>) = 3 [pid 946] ioctl(7, LOOP_SET_FD, 6 [pid 305] <... ioctl resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 303] ioctl(3, LOOP_CLR_FD [pid 946] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] close(3 [pid 304] <... ioctl resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 304] close(3 [pid 303] close(3 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 304] <... close resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 948 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 949 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 950 ./strace-static-x86_64: Process 949 attached [pid 949] set_robust_list(0x5555636e06a0, 24) = 0 [pid 946] ioctl(7, LOOP_CLR_FD) = 0 [pid 949] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 949] setpgid(0, 0) = 0 [pid 949] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 949] write(3, "1000", 4) = 4 [pid 946] ioctl(7, LOOP_SET_FD, 6./strace-static-x86_64: Process 947 attached ) = -1 EBUSY (Device or resource busy) [pid 947] set_robust_list(0x5555636e06a0, 24 [pid 946] close(7 [pid 949] close(3 [pid 946] <... close resumed>) = 0 [pid 947] <... set_robust_list resumed>) = 0 [pid 946] close(6 [pid 949] <... close resumed>) = 0 [pid 949] write(1, "executing program\n", 18executing program ) = 18 [pid 946] <... close resumed>) = 0 [pid 947] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 946] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 947] <... prctl resumed>) = 0 [pid 946] <... futex resumed>) = 1 [pid 943] <... futex resumed>) = 0 [pid 947] setpgid(0, 0 [pid 946] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 943] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 947] <... setpgid resumed>) = 0 [pid 946] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 943] <... futex resumed>) = 0 [pid 946] mknod(0x20000000, 000 [pid 943] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 947] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 946] <... mknod resumed>) = -1 EEXIST (File exists) [pid 947] <... openat resumed>) = 3 [pid 946] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 947] write(3, "1000", 4 [pid 943] <... futex resumed>) = 0 [pid 946] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 943] exit_group(0./strace-static-x86_64: Process 950 attached [pid 947] <... write resumed>) = 4 [pid 946] <... futex resumed>) = ? [pid 943] <... exit_group resumed>) = ? [pid 950] set_robust_list(0x5555636e06a0, 24 [pid 947] close(3 [pid 946] +++ exited with 0 +++ [pid 943] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=943, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 949] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 948 attached ) = 0 [pid 948] set_robust_list(0x5555636e06a0, 24 [pid 949] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 949] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 948] <... set_robust_list resumed>) = 0 [pid 949] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 948] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 949] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 949] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 949] rt_sigprocmask(SIG_BLOCK, ~[], [pid 948] <... prctl resumed>) = 0 [pid 948] setpgid(0, 0) = 0 [pid 948] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 949] <... rt_sigprocmask resumed>[], 8) = 0 [pid 949] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 948] <... openat resumed>) = 3 [pid 949] <... clone3 resumed> => {parent_tid=[951]}, 88) = 951 [pid 949] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 949] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 949] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 948] write(3, "1000", 4) = 4 [pid 948] close(3) = 0 executing program [pid 948] write(1, "executing program\n", 18) = 18 [pid 948] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 948] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 948] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 948] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 948] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 948] <... mprotect resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 948] rt_sigprocmask(SIG_BLOCK, ~[], [pid 306] ioctl(3, LOOP_CLR_FD [pid 948] <... rt_sigprocmask resumed>[], 8) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 948] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 306] close(3) = 0 [pid 948] <... clone3 resumed> => {parent_tid=[952]}, 88) = 952 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 948] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 953 [pid 948] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 948] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 951 attached [pid 951] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 951] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ./strace-static-x86_64: Process 953 attached [pid 951] memfd_create("syzkaller", 0 [pid 953] set_robust_list(0x5555636e06a0, 24) = 0 [pid 953] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 951] <... memfd_create resumed>) = 3 [pid 951] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 953] <... prctl resumed>) = 0 [pid 951] <... mmap resumed>) = 0x7fe6f03b1000 [pid 953] setpgid(0, 0./strace-static-x86_64: Process 952 attached [pid 950] <... set_robust_list resumed>) = 0 [pid 947] <... close resumed>) = 0 executing program [pid 952] set_robust_list(0x7fe6f87d19a0, 24 [pid 950] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 947] write(1, "executing program\n", 18 [pid 952] <... set_robust_list resumed>) = 0 [pid 950] <... prctl resumed>) = 0 [pid 947] <... write resumed>) = 18 [pid 952] rt_sigprocmask(SIG_SETMASK, [], [pid 950] setpgid(0, 0 [pid 952] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 950] <... setpgid resumed>) = 0 [pid 947] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 950] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 952] memfd_create("syzkaller", 0 [pid 947] <... futex resumed>) = 0 [pid 950] <... openat resumed>) = 3 [pid 947] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 952] <... memfd_create resumed>) = 3 [pid 950] write(3, "1000", 4 [pid 947] <... rt_sigaction resumed>NULL, 8) = 0 [pid 952] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 950] <... write resumed>) = 4 [pid 952] <... mmap resumed>) = 0x7fe6f03b1000 [pid 947] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 950] close(3 [pid 947] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 950] <... close resumed>) = 0 [pid 947] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 950] write(1, "executing program\n", 18 [pid 947] <... mmap resumed>) = 0x7fe6f87b1000 [pid 950] <... write resumed>) = 18 [pid 947] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 950] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 947] <... mprotect resumed>) = 0 [pid 950] <... futex resumed>) = 0 [pid 953] <... setpgid resumed>) = 0 [pid 950] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 947] rt_sigprocmask(SIG_BLOCK, ~[], [pid 950] <... rt_sigaction resumed>NULL, 8) = 0 [pid 947] <... rt_sigprocmask resumed>[], 8) = 0 [pid 953] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 950] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 947] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 950] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 950] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 953] <... openat resumed>) = 3 [pid 950] <... mmap resumed>) = 0x7fe6f87b1000 [pid 947] <... clone3 resumed> => {parent_tid=[954]}, 88) = 954 [pid 950] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 947] rt_sigprocmask(SIG_SETMASK, [], [pid 950] <... mprotect resumed>) = 0 [pid 947] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 950] rt_sigprocmask(SIG_BLOCK, ~[], [pid 947] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 950] <... rt_sigprocmask resumed>[], 8) = 0 [pid 947] <... futex resumed>) = 0 [pid 950] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 947] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 953] write(3, "1000", 4) = 4 [pid 950] <... clone3 resumed> => {parent_tid=[955]}, 88) = 955 [pid 953] close(3 [pid 952] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 950] rt_sigprocmask(SIG_SETMASK, [], executing program [pid 953] <... close resumed>) = 0 [pid 950] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 953] write(1, "executing program\n", 18 [pid 950] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 953] <... write resumed>) = 18 [pid 950] <... futex resumed>) = 0 [pid 953] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 950] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 953] <... futex resumed>) = 0 [pid 953] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 952] <... write resumed>) = 262144 [pid 953] <... rt_sigaction resumed>NULL, 8) = 0 [pid 953] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 951] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 953] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 953] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 953] rt_sigprocmask(SIG_BLOCK, ~[], [pid 952] munmap(0x7fe6f03b1000, 138412032 [pid 953] <... rt_sigprocmask resumed>[], 8) = 0 [pid 953] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[956]}, 88) = 956 [pid 953] rt_sigprocmask(SIG_SETMASK, [], [pid 951] <... write resumed>) = 262144 [pid 953] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 953] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 953] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 955 attached [pid 951] munmap(0x7fe6f03b1000, 138412032 [pid 955] set_robust_list(0x7fe6f87d19a0, 24 [pid 951] <... munmap resumed>) = 0 [pid 955] <... set_robust_list resumed>) = 0 [pid 955] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 955] memfd_create("syzkaller", 0 [pid 951] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 955] <... memfd_create resumed>) = 3 [pid 951] <... openat resumed>) = 4 [pid 955] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 951] ioctl(4, LOOP_SET_FD, 3 [pid 955] <... mmap resumed>) = 0x7fe6f03b1000 [pid 951] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 951] ioctl(4, LOOP_CLR_FD) = 0 [pid 955] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 951] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 951] close(4) = 0 [pid 951] close(3) = 0 [pid 951] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 949] <... futex resumed>) = 0 [pid 949] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 949] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 951] <... futex resumed>) = 1 [pid 951] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 951] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 949] <... futex resumed>) = 0 [pid 949] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 949] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 951] <... futex resumed>) = 1 [pid 951] creat("./bus", 000) = 3 [pid 951] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 949] <... futex resumed>) = 0 [pid 951] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 949] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 951] <... openat resumed>) = 4 [pid 949] <... futex resumed>) = 0 [pid 951] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 949] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 956 attached [pid 951] <... futex resumed>) = 0 [pid 949] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 956] set_robust_list(0x7fe6f87d19a0, 24 [pid 951] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 949] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 954 attached [pid 956] <... set_robust_list resumed>) = 0 [pid 952] <... munmap resumed>) = 0 [pid 951] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 949] <... futex resumed>) = 0 [pid 956] rt_sigprocmask(SIG_SETMASK, [], [pid 951] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 949] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 956] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 955] <... write resumed>) = 262144 [pid 951] <... futex resumed>) = 0 [pid 949] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 956] memfd_create("syzkaller", 0 [pid 951] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 949] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 956] <... memfd_create resumed>) = 3 [pid 951] <... open resumed>) = 5 [pid 949] <... futex resumed>) = 0 [pid 956] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 951] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 949] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 956] <... mmap resumed>) = 0x7fe6f03b1000 [pid 951] <... futex resumed>) = 0 [pid 949] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 956] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 954] set_robust_list(0x7fe6f87d19a0, 24 [pid 952] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 951] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 949] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 955] munmap(0x7fe6f03b1000, 138412032 [pid 954] <... set_robust_list resumed>) = 0 [pid 952] <... openat resumed>) = 4 [pid 951] <... mmap resumed>) = 0x20000000 [pid 949] <... futex resumed>) = 0 [pid 955] <... munmap resumed>) = 0 [pid 954] rt_sigprocmask(SIG_SETMASK, [], [pid 952] ioctl(4, LOOP_SET_FD, 3 [pid 951] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 949] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 955] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 954] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 952] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 951] <... futex resumed>) = 0 [pid 949] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 955] <... openat resumed>) = 4 [pid 954] memfd_create("syzkaller", 0 [pid 952] ioctl(4, LOOP_CLR_FD [pid 951] memfd_create("syzkaller", 0 [pid 949] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 956] <... write resumed>) = 262144 [pid 955] ioctl(4, LOOP_SET_FD, 3 [pid 954] <... memfd_create resumed>) = 3 [pid 952] <... ioctl resumed>) = 0 [pid 951] <... memfd_create resumed>) = 6 [pid 949] <... futex resumed>) = 0 [pid 955] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 951] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 949] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 955] ioctl(4, LOOP_CLR_FD [pid 951] <... mmap resumed>) = 0x7fe6f03b1000 [pid 955] <... ioctl resumed>) = 0 [pid 951] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 951] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 951] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 7 [pid 951] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 956] munmap(0x7fe6f03b1000, 138412032 [pid 954] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 951] ioctl(7, LOOP_CLR_FD [pid 956] <... munmap resumed>) = 0 [pid 954] <... mmap resumed>) = 0x7fe6f03b1000 [pid 951] <... ioctl resumed>) = 0 [pid 956] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 955] ioctl(4, LOOP_SET_FD, 3 [pid 956] <... openat resumed>) = 4 [pid 955] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 956] ioctl(4, LOOP_SET_FD, 3 [pid 955] close(4 [pid 956] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 955] <... close resumed>) = 0 [pid 956] ioctl(4, LOOP_CLR_FD [pid 955] close(3 [pid 956] <... ioctl resumed>) = 0 [pid 955] <... close resumed>) = 0 [pid 954] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 952] ioctl(4, LOOP_SET_FD, 3 [pid 955] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 951] ioctl(7, LOOP_SET_FD, 6 [pid 955] <... futex resumed>) = 1 [pid 951] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 955] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 951] close(7) = 0 [pid 951] close(6 [pid 954] <... write resumed>) = 262144 [pid 952] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 950] <... futex resumed>) = 0 [pid 954] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 952] close(4 [pid 951] <... close resumed>) = 0 [pid 950] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 954] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 952] <... close resumed>) = 0 [pid 950] <... futex resumed>) = 1 [pid 952] close(3 [pid 950] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 955] <... futex resumed>) = 0 [pid 951] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 956] ioctl(4, LOOP_SET_FD, 3 [pid 955] chdir("./file0" [pid 956] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 955] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 951] <... futex resumed>) = 1 [pid 949] <... futex resumed>) = 0 [pid 956] close(4 [pid 955] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 954] <... openat resumed>) = 4 [pid 952] <... close resumed>) = 0 [pid 951] mknod(0x20000000, 000 [pid 950] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 949] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 956] <... close resumed>) = 0 [pid 955] <... futex resumed>) = 0 [pid 954] ioctl(4, LOOP_SET_FD, 3 [pid 952] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 951] <... mknod resumed>) = -1 EEXIST (File exists) [pid 950] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 949] <... futex resumed>) = 0 [pid 956] close(3 [pid 955] creat("./bus", 000 [pid 954] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 952] <... futex resumed>) = 1 [pid 951] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 950] <... futex resumed>) = 0 [pid 949] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 948] <... futex resumed>) = 0 [pid 956] <... close resumed>) = 0 [pid 955] <... creat resumed>) = 3 [pid 954] ioctl(4, LOOP_CLR_FD [pid 952] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 951] <... futex resumed>) = 0 [pid 950] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 949] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 948] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 956] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 955] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 954] <... ioctl resumed>) = 0 [pid 952] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 951] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 950] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 949] exit_group(0 [pid 948] <... futex resumed>) = 0 [pid 956] <... futex resumed>) = 1 [pid 955] <... futex resumed>) = 0 [pid 953] <... futex resumed>) = 0 [pid 952] chdir("./file0" [pid 951] <... futex resumed>) = ? [pid 950] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 949] <... exit_group resumed>) = ? [pid 948] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 956] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 955] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 953] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 952] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 951] +++ exited with 0 +++ [pid 950] <... futex resumed>) = 0 [pid 949] +++ exited with 0 +++ [pid 956] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 955] <... openat resumed>) = 4 [pid 954] ioctl(4, LOOP_SET_FD, 3 [pid 953] <... futex resumed>) = 0 [pid 952] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 950] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=949, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 956] chdir("./file0" [pid 955] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 954] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 953] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 952] <... futex resumed>) = 1 [pid 950] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 948] <... futex resumed>) = 0 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 956] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 955] <... futex resumed>) = 0 [pid 954] close(4 [pid 952] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 950] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 948] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 956] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 955] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 954] <... close resumed>) = 0 [pid 952] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 950] <... futex resumed>) = 0 [pid 948] <... futex resumed>) = 0 [pid 956] <... futex resumed>) = 1 [pid 954] close(3 [pid 953] <... futex resumed>) = 0 [pid 952] creat("./bus", 000 [pid 950] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 948] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 956] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 953] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... restart_syscall resumed>) = 0 [pid 956] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 953] <... futex resumed>) = 0 [pid 956] creat("./bus", 000 [pid 954] <... close resumed>) = 0 [pid 953] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 952] <... creat resumed>) = 3 [pid 956] <... creat resumed>) = 3 [pid 954] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 952] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 956] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 954] <... futex resumed>) = 1 [pid 952] <... futex resumed>) = 1 [pid 948] <... futex resumed>) = 0 [pid 947] <... futex resumed>) = 0 [pid 304] <... openat resumed>) = 3 [pid 956] <... futex resumed>) = 1 [pid 954] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 953] <... futex resumed>) = 0 [pid 952] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 948] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 947] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] ioctl(3, LOOP_CLR_FD [pid 956] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 955] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 954] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 953] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 948] <... futex resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 956] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 955] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 953] <... futex resumed>) = 0 [pid 948] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] close(3 [pid 956] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 955] <... futex resumed>) = 1 [pid 954] chdir("./file0" [pid 953] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 952] <... openat resumed>) = 4 [pid 950] <... futex resumed>) = 0 [pid 947] <... futex resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 956] <... openat resumed>) = 4 [pid 955] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 954] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 952] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 950] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 947] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 956] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 955] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 954] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 952] <... futex resumed>) = 1 [pid 950] <... futex resumed>) = 0 [pid 948] <... futex resumed>) = 0 [pid 947] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 956] <... futex resumed>) = 1 [pid 955] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 954] <... futex resumed>) = 0 [pid 953] <... futex resumed>) = 0 [pid 952] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 950] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 948] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 947] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 957 [pid 956] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 955] <... open resumed>) = 5 [pid 954] creat("./bus", 000 [pid 953] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 952] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 948] <... futex resumed>) = 0 [pid 947] <... futex resumed>) = 0 [pid 956] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 955] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 954] <... creat resumed>) = 3 [pid 953] <... futex resumed>) = 0 [pid 952] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 948] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 947] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 956] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 955] <... futex resumed>) = 1 [pid 954] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 953] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 950] <... futex resumed>) = 0 [pid 947] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 955] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 954] <... futex resumed>) = 0 [pid 950] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 947] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 955] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 954] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 950] <... futex resumed>) = 0 [pid 947] <... futex resumed>) = 0 [pid 955] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 954] <... openat resumed>) = 4 [pid 950] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 947] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 955] <... mmap resumed>) = 0x20000000 [pid 954] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 947] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 955] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 954] <... futex resumed>) = 0 [pid 947] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 955] <... futex resumed>) = 1 [pid 954] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 950] <... futex resumed>) = 0 [pid 947] <... futex resumed>) = 0 [pid 955] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 950] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 947] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 955] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 950] <... futex resumed>) = 0 [pid 955] memfd_create("syzkaller", 0 [pid 950] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 955] <... memfd_create resumed>) = 6 [pid 955] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 956] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 955] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 952] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 956] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 955] <... write resumed>) = 131072 [pid 952] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 956] <... futex resumed>) = 1 [pid 955] munmap(0x7fe6f03b1000, 138412032 [pid 953] <... futex resumed>) = 0 [pid 956] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 955] <... munmap resumed>) = 0 [pid 953] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 952] <... futex resumed>) = 1 [pid 948] <... futex resumed>) = 0 [pid 956] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 955] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 953] <... futex resumed>) = 0 [pid 952] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 948] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 956] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 955] <... openat resumed>) = 7 [pid 953] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 952] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 948] <... futex resumed>) = 0 [pid 956] <... open resumed>) = 5 [pid 955] ioctl(7, LOOP_SET_FD, 6 [pid 952] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 948] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 956] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 955] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 952] <... open resumed>) = 5 [pid 956] <... futex resumed>) = 1 [pid 955] ioctl(7, LOOP_CLR_FD [pid 953] <... futex resumed>) = 0 [pid 952] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 956] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 955] <... ioctl resumed>) = 0 [pid 953] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 956] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 953] <... futex resumed>) = 0 [pid 952] <... futex resumed>) = 1 [pid 948] <... futex resumed>) = 0 [pid 956] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 953] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 952] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 948] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 956] <... mmap resumed>) = 0x20000000 [pid 948] <... futex resumed>) = 0 [pid 956] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 952] <... mmap resumed>) = 0x20000000 [pid 948] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 956] <... futex resumed>) = 1 [pid 954] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 953] <... futex resumed>) = 0 [pid 952] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 948] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 956] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 954] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 953] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 952] <... futex resumed>) = 0 [pid 948] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 956] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 955] ioctl(7, LOOP_SET_FD, 6 [pid 954] <... futex resumed>) = 1 [pid 953] <... futex resumed>) = 0 [pid 948] <... futex resumed>) = 0 [pid 947] <... futex resumed>) = 0 [pid 956] memfd_create("syzkaller", 0 [pid 955] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 954] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 953] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 952] memfd_create("syzkaller", 0 [pid 948] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 947] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 956] <... memfd_create resumed>) = 6 [pid 955] close(7 [pid 954] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 952] <... memfd_create resumed>) = 6 [pid 947] <... futex resumed>) = 0 [pid 956] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 955] <... close resumed>) = 0 [pid 954] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 952] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 947] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 956] <... mmap resumed>) = 0x7fe6f03b1000 [pid 955] close(6 [pid 954] <... open resumed>) = 5 [pid 952] <... mmap resumed>) = 0x7fe6f03b1000 [pid 956] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 955] <... close resumed>) = 0 [pid 954] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 956] <... write resumed>) = 131072 [pid 955] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 954] <... futex resumed>) = 1 [pid 956] munmap(0x7fe6f03b1000, 138412032 [pid 955] <... futex resumed>) = 1 [pid 954] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 952] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 950] <... futex resumed>) = 0 [pid 947] <... futex resumed>) = 0 [pid 956] <... munmap resumed>) = 0 [pid 955] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 950] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 947] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 956] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 955] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 954] <... futex resumed>) = 0 [pid 952] <... write resumed>) = 131072 [pid 950] <... futex resumed>) = 0 [pid 947] <... futex resumed>) = 1 [pid 956] <... openat resumed>) = 7 [pid 955] mknod(0x20000000, 000 [pid 954] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 952] munmap(0x7fe6f03b1000, 138412032 [pid 950] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 947] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 956] ioctl(7, LOOP_SET_FD, 6 [pid 955] <... mknod resumed>) = -1 EEXIST (File exists) [pid 954] <... mmap resumed>) = 0x20000000 [pid 956] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 955] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 954] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 952] <... munmap resumed>) = 0 [pid 956] ioctl(7, LOOP_CLR_FD [pid 955] <... futex resumed>) = 1 [pid 954] <... futex resumed>) = 1 [pid 952] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 950] <... futex resumed>) = 0 [pid 947] <... futex resumed>) = 0 [pid 956] <... ioctl resumed>) = 0 [pid 955] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 954] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 952] <... openat resumed>) = 7 [pid 950] exit_group(0 [pid 947] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 955] <... futex resumed>) = ? [pid 954] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 952] ioctl(7, LOOP_SET_FD, 6 [pid 950] <... exit_group resumed>) = ? [pid 947] <... futex resumed>) = 0 [pid 955] +++ exited with 0 +++ [pid 954] memfd_create("syzkaller", 0 [pid 952] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 950] +++ exited with 0 +++ [pid 947] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 956] ioctl(7, LOOP_SET_FD, 6 [pid 954] <... memfd_create resumed>) = 6 [pid 952] ioctl(7, LOOP_CLR_FD [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=950, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 956] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 954] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 952] <... ioctl resumed>) = 0 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 956] close(7 [pid 954] <... mmap resumed>) = 0x7fe6f03b1000 [pid 956] <... close resumed>) = 0 [pid 954] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 956] close(6 [pid 954] <... write resumed>) = 131072 [pid 303] <... restart_syscall resumed>) = 0 [pid 956] <... close resumed>) = 0 [pid 954] munmap(0x7fe6f03b1000, 138412032 [pid 956] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 954] <... munmap resumed>) = 0 [pid 952] ioctl(7, LOOP_SET_FD, 6 [pid 956] <... futex resumed>) = 1 [pid 954] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 953] <... futex resumed>) = 0 [pid 952] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 956] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 954] <... openat resumed>) = 7 [pid 953] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 952] close(7 [pid 303] <... openat resumed>) = 3 [pid 956] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 954] ioctl(7, LOOP_SET_FD, 6 [pid 953] <... futex resumed>) = 0 [pid 952] <... close resumed>) = 0 [pid 303] ioctl(3, LOOP_CLR_FD [pid 956] mknod(0x20000000, 000 [pid 954] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 953] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 952] close(6 [pid 303] <... ioctl resumed>) = 0 [pid 956] <... mknod resumed>) = -1 EEXIST (File exists) [pid 954] ioctl(7, LOOP_CLR_FD [pid 303] close(3 [pid 956] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 954] <... ioctl resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 956] <... futex resumed>) = 1 [pid 953] <... futex resumed>) = 0 [pid 952] <... close resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 956] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 953] exit_group(0 [pid 952] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 956] <... futex resumed>) = ? [pid 953] <... exit_group resumed>) = ? [pid 952] <... futex resumed>) = 1 [pid 948] <... futex resumed>) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 958 [pid 956] +++ exited with 0 +++ [pid 953] +++ exited with 0 +++ [pid 952] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 948] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 954] ioctl(7, LOOP_SET_FD, 6 [pid 952] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 948] <... futex resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=953, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 954] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 952] mknod(0x20000000, 000 [pid 948] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 954] close(7 [pid 952] <... mknod resumed>) = -1 EEXIST (File exists) ./strace-static-x86_64: Process 957 attached [pid 954] <... close resumed>) = 0 [pid 952] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 957] set_robust_list(0x5555636e06a0, 24 [pid 954] close(6 [pid 952] <... futex resumed>) = 1 [pid 948] <... futex resumed>) = 0 [pid 957] <... set_robust_list resumed>) = 0 [pid 954] <... close resumed>) = 0 [pid 952] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 948] exit_group(0 [pid 957] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 954] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 952] <... futex resumed>) = ? [pid 948] <... exit_group resumed>) = ? [pid 957] <... prctl resumed>) = 0 [pid 954] <... futex resumed>) = 1 [pid 952] +++ exited with 0 +++ [pid 948] +++ exited with 0 +++ [pid 947] <... futex resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 957] setpgid(0, 0 [pid 954] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 947] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=948, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 954] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 947] <... futex resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 954] mknod(0x20000000, 000 [pid 947] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 305] <... restart_syscall resumed>) = 0 [pid 954] <... mknod resumed>) = -1 EEXIST (File exists) [pid 306] <... openat resumed>) = 3 [pid 954] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] ioctl(3, LOOP_CLR_FD [pid 954] <... futex resumed>) = 1 [pid 947] <... futex resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 954] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 947] exit_group(0 [pid 306] close(3 [pid 305] <... openat resumed>) = 3 [pid 954] <... futex resumed>) = ? [pid 947] <... exit_group resumed>) = ? [pid 306] <... close resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 957] <... setpgid resumed>) = 0 [pid 954] +++ exited with 0 +++ [pid 947] +++ exited with 0 +++ [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... ioctl resumed>) = 0 [pid 305] close(3 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=947, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 959 [pid 305] <... close resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 960 ./strace-static-x86_64: Process 958 attached [pid 958] set_robust_list(0x5555636e06a0, 24) = 0 [pid 958] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 958] setpgid(0, 0) = 0 [pid 958] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 executing program [pid 958] write(3, "1000", 4) = 4 [pid 958] close(3) = 0 [pid 958] write(1, "executing program\n", 18) = 18 [pid 958] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 958] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 958] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 958] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 957] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 958] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 958] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 957] <... openat resumed>) = 3 [pid 958] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[961]}, 88) = 961 [pid 957] write(3, "1000", 4 [pid 958] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 958] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 958] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 960 attached [pid 960] set_robust_list(0x5555636e06a0, 24) = 0 [pid 960] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 959 attached ) = 0 [pid 959] set_robust_list(0x5555636e06a0, 24 [pid 960] setpgid(0, 0) = 0 [pid 959] <... set_robust_list resumed>) = 0 [pid 960] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 959] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 959] setpgid(0, 0 [pid 960] <... openat resumed>) = 3 [pid 959] <... setpgid resumed>) = 0 [pid 959] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 960] write(3, "1000", 4) = 4 [pid 960] close(3executing program ) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 302] ioctl(3, LOOP_CLR_FD) = 0 [pid 957] <... write resumed>) = 4 [pid 302] close(3) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 962 [pid 960] write(1, "executing program\n", 18) = 18 [pid 960] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 960] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, executing program NULL, 8) = 0 [pid 959] <... openat resumed>) = 3 [pid 957] close(3 [pid 960] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 959] write(3, "1000", 4 [pid 960] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 959] <... write resumed>) = 4 [pid 960] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 959] close(3 [pid 960] <... mmap resumed>) = 0x7fe6f87b1000 [pid 959] <... close resumed>) = 0 [pid 960] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 959] write(1, "executing program\n", 18 [pid 960] <... mprotect resumed>) = 0 [pid 959] <... write resumed>) = 18 [pid 960] rt_sigprocmask(SIG_BLOCK, ~[], [pid 959] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 960] <... rt_sigprocmask resumed>[], 8) = 0 [pid 959] <... futex resumed>) = 0 [pid 960] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 959] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 960] <... clone3 resumed> => {parent_tid=[963]}, 88) = 963 [pid 959] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 960] rt_sigprocmask(SIG_SETMASK, [], [pid 959] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 960] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 959] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0./strace-static-x86_64: Process 961 attached [pid 960] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 959] <... mmap resumed>) = 0x7fe6f87b1000 [pid 961] set_robust_list(0x7fe6f87d19a0, 24 [pid 960] <... futex resumed>) = 0 [pid 959] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 957] <... close resumed>) = 0 executing program [pid 961] <... set_robust_list resumed>) = 0 [pid 960] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 959] <... mprotect resumed>) = 0 [pid 957] write(1, "executing program\n", 18 [pid 961] rt_sigprocmask(SIG_SETMASK, [], [pid 959] rt_sigprocmask(SIG_BLOCK, ~[], [pid 957] <... write resumed>) = 18 ./strace-static-x86_64: Process 962 attached [pid 961] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 959] <... rt_sigprocmask resumed>[], 8) = 0 [pid 957] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 962] set_robust_list(0x5555636e06a0, 24 [pid 961] memfd_create("syzkaller", 0 [pid 959] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 957] <... futex resumed>) = 0 [pid 962] <... set_robust_list resumed>) = 0 [pid 961] <... memfd_create resumed>) = 3 [pid 957] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 961] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 962] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 959] <... clone3 resumed> => {parent_tid=[964]}, 88) = 964 [pid 957] <... rt_sigaction resumed>NULL, 8) = 0 [pid 962] <... prctl resumed>) = 0 [pid 961] <... mmap resumed>) = 0x7fe6f03b1000 [pid 959] rt_sigprocmask(SIG_SETMASK, [], [pid 957] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 962] setpgid(0, 0 [pid 961] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 959] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 957] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 962] <... setpgid resumed>) = 0 [pid 957] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 962] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 959] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 957] <... mmap resumed>) = 0x7fe6f87b1000 [pid 959] <... futex resumed>) = 0 [pid 957] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 959] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 957] <... mprotect resumed>) = 0 [pid 962] <... openat resumed>) = 3 [pid 961] <... write resumed>) = 262144 [pid 957] rt_sigprocmask(SIG_BLOCK, ~[], [pid 962] write(3, "1000", 4 [pid 957] <... rt_sigprocmask resumed>[], 8) = 0 [pid 962] <... write resumed>) = 4 [pid 957] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0}./strace-static-x86_64: Process 963 attached [pid 962] close(3 [pid 957] <... clone3 resumed> => {parent_tid=[965]}, 88) = 965 [pid 962] <... close resumed>) = 0 [pid 957] rt_sigprocmask(SIG_SETMASK, [], [pid 962] write(1, "executing program\n", 18 [pid 957] <... rt_sigprocmask resumed>NULL, 8) = 0 executing program [pid 962] <... write resumed>) = 18 [pid 957] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 962] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 957] <... futex resumed>) = 0 [pid 962] <... futex resumed>) = 0 [pid 957] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 963] set_robust_list(0x7fe6f87d19a0, 24 [pid 962] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 963] <... set_robust_list resumed>) = 0 [pid 963] rt_sigprocmask(SIG_SETMASK, [], [pid 961] munmap(0x7fe6f03b1000, 138412032 [pid 963] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 962] <... rt_sigaction resumed>NULL, 8) = 0 [pid 961] <... munmap resumed>) = 0 [pid 963] memfd_create("syzkaller", 0 [pid 961] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 963] <... memfd_create resumed>) = 3 [pid 961] <... openat resumed>) = 4 [pid 963] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 961] ioctl(4, LOOP_SET_FD, 3 [pid 963] <... mmap resumed>) = 0x7fe6f03b1000 [pid 961] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 961] ioctl(4, LOOP_CLR_FD) = 0 [pid 963] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 962] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 961] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 961] close(4) = 0 [pid 961] close(3) = 0 [pid 961] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 958] <... futex resumed>) = 0 [pid 961] chdir("./file0" [pid 958] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 961] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 958] <... futex resumed>) = 0 [pid 961] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 958] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 961] <... futex resumed>) = 0 [pid 958] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 961] creat("./bus", 000 [pid 958] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 961] <... creat resumed>) = 3 [pid 958] <... futex resumed>) = 0 [pid 961] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 958] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 961] <... futex resumed>) = 0 [pid 958] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 961] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 958] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 961] <... openat resumed>) = 4 [pid 958] <... futex resumed>) = 0 [pid 961] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 958] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 961] <... futex resumed>) = 0 [pid 958] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 961] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 958] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 965 attached [pid 962] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 958] <... futex resumed>) = 0 ./strace-static-x86_64: Process 964 attached [pid 965] set_robust_list(0x7fe6f87d19a0, 24 [pid 962] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 961] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 958] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 963] munmap(0x7fe6f03b1000, 138412032 [pid 962] <... mmap resumed>) = 0x7fe6f87b1000 [pid 961] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 965] <... set_robust_list resumed>) = 0 [pid 964] set_robust_list(0x7fe6f87d19a0, 24 [pid 963] <... munmap resumed>) = 0 [pid 962] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 961] <... futex resumed>) = 1 [pid 958] <... futex resumed>) = 0 [pid 965] rt_sigprocmask(SIG_SETMASK, [], [pid 964] <... set_robust_list resumed>) = 0 [pid 963] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 962] <... mprotect resumed>) = 0 [pid 961] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 958] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 965] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 964] rt_sigprocmask(SIG_SETMASK, [], [pid 963] <... openat resumed>) = 4 [pid 962] rt_sigprocmask(SIG_BLOCK, ~[], [pid 961] <... open resumed>) = 5 [pid 958] <... futex resumed>) = 0 [pid 965] memfd_create("syzkaller", 0 [pid 964] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 963] ioctl(4, LOOP_SET_FD, 3 [pid 962] <... rt_sigprocmask resumed>[], 8) = 0 [pid 961] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 958] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 965] <... memfd_create resumed>) = 3 [pid 964] memfd_create("syzkaller", 0 [pid 963] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 962] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 961] <... futex resumed>) = 0 [pid 958] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 965] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 964] <... memfd_create resumed>) = 3 [pid 963] ioctl(4, LOOP_CLR_FD [pid 961] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 958] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 965] <... mmap resumed>) = 0x7fe6f03b1000 [pid 964] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 963] <... ioctl resumed>) = 0 [pid 962] <... clone3 resumed> => {parent_tid=[966]}, 88) = 966 [pid 961] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 958] <... futex resumed>) = 0 [pid 961] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 958] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 961] <... mmap resumed>) = 0x20000000 [pid 961] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 958] <... futex resumed>) = 0 [pid 961] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 958] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 961] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 958] <... futex resumed>) = 0 [pid 963] ioctl(4, LOOP_SET_FD, 3 [pid 961] memfd_create("syzkaller", 0 [pid 958] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 965] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 964] <... mmap resumed>) = 0x7fe6f03b1000 [pid 963] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 962] rt_sigprocmask(SIG_SETMASK, [], [pid 961] <... memfd_create resumed>) = 6 [pid 963] close(4 [pid 961] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 963] <... close resumed>) = 0 [pid 961] <... mmap resumed>) = 0x7fe6f03b1000 [pid 965] <... write resumed>) = 262144 [pid 963] close(3 [pid 961] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 965] munmap(0x7fe6f03b1000, 138412032 [pid 964] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 963] <... close resumed>) = 0 [pid 962] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 961] <... write resumed>) = 131072 [pid 965] <... munmap resumed>) = 0 [pid 963] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 962] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 961] munmap(0x7fe6f03b1000, 138412032 [pid 963] <... futex resumed>) = 1 [pid 961] <... munmap resumed>) = 0 [pid 960] <... futex resumed>) = 0 [pid 965] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 964] <... write resumed>) = 262144 [pid 963] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 962] <... futex resumed>) = 0 [pid 961] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 960] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 966 attached [pid 965] <... openat resumed>) = 4 [pid 964] munmap(0x7fe6f03b1000, 138412032 [pid 963] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 962] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 961] <... openat resumed>) = 7 [pid 960] <... futex resumed>) = 0 [pid 966] set_robust_list(0x7fe6f87d19a0, 24 [pid 965] ioctl(4, LOOP_SET_FD, 3 [pid 964] <... munmap resumed>) = 0 [pid 963] chdir("./file0" [pid 961] ioctl(7, LOOP_SET_FD, 6 [pid 960] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 966] <... set_robust_list resumed>) = 0 [pid 965] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 964] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 963] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 961] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 966] rt_sigprocmask(SIG_SETMASK, [], [pid 965] ioctl(4, LOOP_CLR_FD [pid 964] <... openat resumed>) = 4 [pid 963] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 961] ioctl(7, LOOP_CLR_FD [pid 966] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 965] <... ioctl resumed>) = 0 [pid 964] ioctl(4, LOOP_SET_FD, 3 [pid 963] <... futex resumed>) = 1 [pid 961] <... ioctl resumed>) = 0 [pid 960] <... futex resumed>) = 0 [pid 966] memfd_create("syzkaller", 0 [pid 964] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 963] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 960] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 966] <... memfd_create resumed>) = 3 [pid 964] ioctl(4, LOOP_CLR_FD [pid 963] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 960] <... futex resumed>) = 0 [pid 966] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 964] <... ioctl resumed>) = 0 [pid 963] creat("./bus", 000 [pid 960] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 966] <... mmap resumed>) = 0x7fe6f03b1000 [pid 963] <... creat resumed>) = 3 [pid 963] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 960] <... futex resumed>) = 0 [pid 965] ioctl(4, LOOP_SET_FD, 3 [pid 963] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 960] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 965] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 963] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 961] ioctl(7, LOOP_SET_FD, 6 [pid 960] <... futex resumed>) = 0 [pid 963] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 961] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 960] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 965] close(4 [pid 963] <... openat resumed>) = 4 [pid 961] close(7 [pid 965] <... close resumed>) = 0 [pid 963] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 961] <... close resumed>) = 0 [pid 965] close(3 [pid 964] ioctl(4, LOOP_SET_FD, 3 [pid 963] <... futex resumed>) = 1 [pid 961] close(6 [pid 960] <... futex resumed>) = 0 [pid 965] <... close resumed>) = 0 [pid 964] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 963] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 961] <... close resumed>) = 0 [pid 960] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 965] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 964] close(4 [pid 963] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 961] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 960] <... futex resumed>) = 0 [pid 965] <... futex resumed>) = 1 [pid 964] <... close resumed>) = 0 [pid 963] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 961] <... futex resumed>) = 1 [pid 960] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 958] <... futex resumed>) = 0 [pid 957] <... futex resumed>) = 0 [pid 966] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 965] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 964] close(3 [pid 963] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 961] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 958] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 957] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 965] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 963] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 961] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 958] <... futex resumed>) = 0 [pid 963] <... futex resumed>) = 1 [pid 961] mknod(0x20000000, 000 [pid 960] <... futex resumed>) = 0 [pid 958] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 963] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 961] <... mknod resumed>) = -1 EEXIST (File exists) [pid 960] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 966] <... write resumed>) = 262144 [pid 965] chdir("./file0" [pid 964] <... close resumed>) = 0 [pid 963] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 961] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 960] <... futex resumed>) = 0 [pid 957] <... futex resumed>) = 0 [pid 966] munmap(0x7fe6f03b1000, 138412032 [pid 965] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 964] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 963] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 961] <... futex resumed>) = 1 [pid 960] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 958] <... futex resumed>) = 0 [pid 957] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 966] <... munmap resumed>) = 0 [pid 965] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 964] <... futex resumed>) = 1 [pid 963] <... open resumed>) = 5 [pid 961] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 959] <... futex resumed>) = 0 [pid 958] exit_group(0 [pid 966] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 965] <... futex resumed>) = 0 [pid 964] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 963] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 961] <... futex resumed>) = ? [pid 959] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 958] <... exit_group resumed>) = ? [pid 957] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 966] <... openat resumed>) = 4 [pid 965] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 964] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 963] <... futex resumed>) = 1 [pid 961] +++ exited with 0 +++ [pid 960] <... futex resumed>) = 0 [pid 959] <... futex resumed>) = 0 [pid 958] +++ exited with 0 +++ [pid 957] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 966] ioctl(4, LOOP_SET_FD, 3 [pid 965] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 964] chdir("./file0" [pid 963] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 960] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 959] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 957] <... futex resumed>) = 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=958, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 966] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 965] creat("./bus", 000 [pid 964] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 963] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 960] <... futex resumed>) = 0 [pid 957] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 966] ioctl(4, LOOP_CLR_FD [pid 965] <... creat resumed>) = 3 [pid 964] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 963] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 960] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 966] <... ioctl resumed>) = 0 [pid 965] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 964] <... futex resumed>) = 1 [pid 963] <... mmap resumed>) = 0x20000000 [pid 959] <... futex resumed>) = 0 [pid 965] <... futex resumed>) = 1 [pid 964] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 963] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 959] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 957] <... futex resumed>) = 0 [pid 965] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 964] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 963] <... futex resumed>) = 1 [pid 960] <... futex resumed>) = 0 [pid 959] <... futex resumed>) = 0 [pid 957] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 965] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 964] creat("./bus", 000 [pid 963] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 960] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 959] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 957] <... futex resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 966] ioctl(4, LOOP_SET_FD, 3 [pid 965] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 964] <... creat resumed>) = 3 [pid 963] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 960] <... futex resumed>) = 0 [pid 957] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 966] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 965] <... openat resumed>) = 4 [pid 964] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 963] memfd_create("syzkaller", 0 [pid 960] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 966] close(4 [pid 965] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 964] <... futex resumed>) = 1 [pid 963] <... memfd_create resumed>) = 6 [pid 959] <... futex resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 966] <... close resumed>) = 0 [pid 965] <... futex resumed>) = 1 [pid 964] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 963] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 959] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 957] <... futex resumed>) = 0 [pid 303] <... openat resumed>) = 3 [pid 966] close(3 [pid 965] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 964] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 963] <... mmap resumed>) = 0x7fe6f03b1000 [pid 959] <... futex resumed>) = 0 [pid 957] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] ioctl(3, LOOP_CLR_FD [pid 966] <... close resumed>) = 0 [pid 965] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 964] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 963] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 959] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 957] <... futex resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 966] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 965] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 964] <... openat resumed>) = 4 [pid 963] <... write resumed>) = 131072 [pid 957] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] close(3 [pid 966] <... futex resumed>) = 1 [pid 964] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 963] munmap(0x7fe6f03b1000, 138412032 [pid 962] <... futex resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 966] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 965] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 964] <... futex resumed>) = 1 [pid 963] <... munmap resumed>) = 0 [pid 962] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 959] <... futex resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 966] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 965] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 964] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 963] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 962] <... futex resumed>) = 0 [pid 959] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 966] chdir("./file0" [pid 965] <... futex resumed>) = 1 [pid 964] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 963] <... openat resumed>) = 7 [pid 962] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 959] <... futex resumed>) = 0 [pid 957] <... futex resumed>) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 967 [pid 966] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 965] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 964] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 963] ioctl(7, LOOP_SET_FD, 6 [pid 959] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 957] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 966] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 965] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 963] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 957] <... futex resumed>) = 0 [pid 966] <... futex resumed>) = 1 [pid 965] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 963] ioctl(7, LOOP_CLR_FD [pid 962] <... futex resumed>) = 0 [pid 957] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 966] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 965] <... open resumed>) = 5 [pid 964] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 963] <... ioctl resumed>) = 0 [pid 962] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 966] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 965] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 964] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 962] <... futex resumed>) = 0 [pid 966] creat("./bus", 000 [pid 965] <... futex resumed>) = 1 [pid 964] <... futex resumed>) = 1 [pid 962] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 959] <... futex resumed>) = 0 [pid 957] <... futex resumed>) = 0 [pid 966] <... creat resumed>) = 3 [pid 965] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 964] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 959] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 957] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 966] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 965] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 964] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 959] <... futex resumed>) = 0 [pid 957] <... futex resumed>) = 0 [pid 966] <... futex resumed>) = 1 [pid 965] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 964] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 962] <... futex resumed>) = 0 [pid 959] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 957] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 966] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 967 attached ) = -1 EAGAIN (Resource temporarily unavailable) [pid 965] <... mmap resumed>) = 0x20000000 [pid 964] <... open resumed>) = 5 [pid 962] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 967] set_robust_list(0x5555636e06a0, 24 [pid 966] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 965] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 964] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 963] ioctl(7, LOOP_SET_FD, 6 [pid 962] <... futex resumed>) = 0 [pid 967] <... set_robust_list resumed>) = 0 [pid 966] <... openat resumed>) = 4 [pid 965] <... futex resumed>) = 1 [pid 964] <... futex resumed>) = 1 [pid 963] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 962] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 959] <... futex resumed>) = 0 [pid 957] <... futex resumed>) = 0 [pid 967] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 966] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 965] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 964] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 963] close(7 [pid 962] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 959] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 957] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 967] <... prctl resumed>) = 0 [pid 966] <... futex resumed>) = 0 [pid 965] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 964] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 963] <... close resumed>) = 0 [pid 967] setpgid(0, 0 [pid 963] close(6 [pid 967] <... setpgid resumed>) = 0 [pid 963] <... close resumed>) = 0 [pid 967] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 963] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 967] <... openat resumed>) = 3 [pid 963] <... futex resumed>) = 1 [pid 960] <... futex resumed>) = 0 [pid 967] write(3, "1000", 4 [pid 963] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 960] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 967] <... write resumed>) = 4 [pid 966] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 963] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 962] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 960] <... futex resumed>) = 0 [pid 959] <... futex resumed>) = 0 [pid 957] <... futex resumed>) = 0 [pid 965] memfd_create("syzkaller", 0 [pid 964] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 967] close(3 [pid 966] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 965] <... memfd_create resumed>) = 6 [pid 963] mknod(0x20000000, 000 [pid 962] <... futex resumed>) = 0 [pid 960] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 959] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 957] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 967] <... close resumed>) = 0 [pid 966] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 965] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 964] <... mmap resumed>) = 0x20000000 [pid 963] <... mknod resumed>) = -1 EEXIST (File exists) executing program [pid 962] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 967] write(1, "executing program\n", 18 [pid 966] <... futex resumed>) = 0 [pid 965] <... mmap resumed>) = 0x7fe6f03b1000 [pid 964] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 963] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 962] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 967] <... write resumed>) = 18 [pid 966] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 963] <... futex resumed>) = 1 [pid 960] <... futex resumed>) = 0 [pid 967] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 965] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 964] <... futex resumed>) = 1 [pid 963] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 962] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 960] exit_group(0 [pid 959] <... futex resumed>) = 0 [pid 967] <... futex resumed>) = 0 [pid 966] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 963] <... futex resumed>) = ? [pid 960] <... exit_group resumed>) = ? [pid 967] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 966] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 965] <... write resumed>) = 131072 [pid 964] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 963] +++ exited with 0 +++ [pid 962] <... futex resumed>) = 0 [pid 960] +++ exited with 0 +++ [pid 959] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 967] <... rt_sigaction resumed>NULL, 8) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=960, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 967] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 966] <... open resumed>) = 5 [pid 965] munmap(0x7fe6f03b1000, 138412032 [pid 964] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 962] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 959] <... futex resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 967] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 966] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 965] <... munmap resumed>) = 0 [pid 964] memfd_create("syzkaller", 0 [pid 962] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 959] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 967] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 966] <... futex resumed>) = 0 [pid 965] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 964] <... memfd_create resumed>) = 6 [pid 962] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 967] <... mmap resumed>) = 0x7fe6f87b1000 [pid 966] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 967] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 965] <... openat resumed>) = 7 [pid 964] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 962] <... futex resumed>) = 0 [pid 967] <... mprotect resumed>) = 0 [pid 967] rt_sigprocmask(SIG_BLOCK, ~[], [pid 966] <... mmap resumed>) = 0x20000000 [pid 965] ioctl(7, LOOP_SET_FD, 6 [pid 964] <... mmap resumed>) = 0x7fe6f03b1000 [pid 962] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 967] <... rt_sigprocmask resumed>[], 8) = 0 [pid 966] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 965] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] <... restart_syscall resumed>) = 0 [pid 967] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[968]}, 88) = 968 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 967] rt_sigprocmask(SIG_SETMASK, [], [pid 966] <... futex resumed>) = 0 [pid 965] ioctl(7, LOOP_CLR_FD [pid 964] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 962] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 305] <... openat resumed>) = 3 [pid 967] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 966] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 965] <... ioctl resumed>) = 0 [pid 964] <... write resumed>) = 131072 [pid 962] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] ioctl(3, LOOP_CLR_FD [pid 967] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 966] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 964] munmap(0x7fe6f03b1000, 138412032 [pid 962] <... futex resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 967] <... futex resumed>) = 0 [pid 966] memfd_create("syzkaller", 0 [pid 962] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 305] close(3 [pid 967] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 966] <... memfd_create resumed>) = 6 [pid 964] <... munmap resumed>) = 0 [pid 305] <... close resumed>) = 0 ./strace-static-x86_64: Process 968 attached [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 966] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 965] ioctl(7, LOOP_SET_FD, 6 [pid 964] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 969 [pid 964] <... openat resumed>) = 7 [pid 966] <... mmap resumed>) = 0x7fe6f03b1000 [pid 965] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 964] ioctl(7, LOOP_SET_FD, 6 [pid 965] close(7./strace-static-x86_64: Process 969 attached [pid 969] set_robust_list(0x5555636e06a0, 24) = 0 [pid 969] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 969] setpgid(0, 0) = 0 [pid 968] set_robust_list(0x7fe6f87d19a0, 24 [pid 966] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 965] <... close resumed>) = 0 [pid 964] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 966] <... write resumed>) = 131072 [pid 968] <... set_robust_list resumed>) = 0 [pid 966] munmap(0x7fe6f03b1000, 138412032 [pid 965] close(6 [pid 964] ioctl(7, LOOP_CLR_FD [pid 966] <... munmap resumed>) = 0 [pid 969] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 968] rt_sigprocmask(SIG_SETMASK, [], [pid 966] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 965] <... close resumed>) = 0 [pid 964] <... ioctl resumed>) = 0 [pid 966] <... openat resumed>) = 7 [pid 968] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 966] ioctl(7, LOOP_SET_FD, 6 [pid 965] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 968] memfd_create("syzkaller", 0 [pid 966] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 965] <... futex resumed>) = 1 [pid 957] <... futex resumed>) = 0 [pid 968] <... memfd_create resumed>) = 3 [pid 966] ioctl(7, LOOP_CLR_FD [pid 965] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 957] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 968] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 966] <... ioctl resumed>) = 0 [pid 965] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 957] <... futex resumed>) = 0 [pid 965] mknod(0x20000000, 000 [pid 957] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 968] <... mmap resumed>) = 0x7fe6f03b1000 [pid 965] <... mknod resumed>) = -1 EEXIST (File exists) [pid 965] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 964] ioctl(7, LOOP_SET_FD, 6 [pid 957] <... futex resumed>) = 0 [pid 965] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 964] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 957] exit_group(0 [pid 964] close(7 [pid 965] <... futex resumed>) = ? [pid 957] <... exit_group resumed>) = ? [pid 964] <... close resumed>) = 0 [pid 969] <... openat resumed>) = 3 [pid 969] write(3, "1000", 4) = 4 [pid 969] close(3) = 0 [pid 969] write(1, "executing program\n", 18executing program ) = 18 [pid 969] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 969] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 969] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 965] +++ exited with 0 +++ [pid 964] close(6 [pid 957] +++ exited with 0 +++ [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=957, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 969] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 969] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 964] <... close resumed>) = 0 [pid 966] ioctl(7, LOOP_SET_FD, 6 [pid 969] <... mmap resumed>) = 0x7fe6f87b1000 [pid 966] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 964] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 969] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 966] close(7 [pid 964] <... futex resumed>) = 1 [pid 959] <... futex resumed>) = 0 [pid 964] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 966] <... close resumed>) = 0 [pid 964] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 959] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 969] <... mprotect resumed>) = 0 [pid 966] close(6 [pid 964] mknod(0x20000000, 000 [pid 959] <... futex resumed>) = 0 [pid 969] rt_sigprocmask(SIG_BLOCK, ~[], [pid 964] <... mknod resumed>) = -1 EEXIST (File exists) [pid 959] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 969] <... rt_sigprocmask resumed>[], 8) = 0 [pid 966] <... close resumed>) = 0 [pid 964] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 969] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 966] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 964] <... futex resumed>) = 1 [pid 959] <... futex resumed>) = 0 [pid 964] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 966] <... futex resumed>) = 1 [pid 962] <... futex resumed>) = 0 [pid 959] exit_group(0 [pid 966] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 962] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 964] <... futex resumed>) = ? [pid 962] <... futex resumed>) = 0 [pid 959] <... exit_group resumed>) = ? [pid 966] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 964] +++ exited with 0 +++ [pid 962] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 969] <... clone3 resumed> => {parent_tid=[970]}, 88) = 970 [pid 969] rt_sigprocmask(SIG_SETMASK, [], [pid 966] mknod(0x20000000, 000 [pid 959] +++ exited with 0 +++ [pid 969] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 966] <... mknod resumed>) = -1 EEXIST (File exists) [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=959, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 969] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 969] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 304] <... restart_syscall resumed>) = 0 [pid 968] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 966] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... openat resumed>) = 3 [pid 966] <... futex resumed>) = 1 [pid 962] <... futex resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 966] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 962] exit_group(0 [pid 306] <... ioctl resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 966] <... futex resumed>) = ? [pid 962] <... exit_group resumed>) = ? [pid 306] close(3 [pid 304] <... openat resumed>) = 3 [pid 966] +++ exited with 0 +++ [pid 306] <... close resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 304] <... ioctl resumed>) = 0 [pid 962] +++ exited with 0 +++ [pid 304] close(3 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 971 [pid 304] <... close resumed>) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=962, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 972 ./strace-static-x86_64: Process 971 attached [pid 971] set_robust_list(0x5555636e06a0, 24) = 0 [pid 971] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 971] setpgid(0, 0) = 0 [pid 971] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 971] write(3, "1000", 4) = 4 [pid 971] close(3) = 0 [pid 971] write(1, "executing program\n", 18executing program ) = 18 [pid 971] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 971] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 971] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 971] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 971] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 968] <... write resumed>) = 262144 [pid 302] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 970 attached [pid 968] munmap(0x7fe6f03b1000, 138412032 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 302] ioctl(3, LOOP_CLR_FD) = 0 [pid 302] close(3) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 973 [pid 971] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 971] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[974]}, 88) = 974 [pid 971] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 971] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 971] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 968] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 973 attached [pid 973] set_robust_list(0x5555636e06a0, 24) = 0 [pid 973] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 973] setpgid(0, 0) = 0 [pid 973] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 968] openat(AT_FDCWD, "/dev/loop1", O_RDWR./strace-static-x86_64: Process 972 attached [pid 970] set_robust_list(0x7fe6f87d19a0, 24 [pid 973] <... openat resumed>) = 3 [pid 973] write(3, "1000", 4) = 4 [pid 973] close(3) = 0 [pid 973] write(1, "executing program\n", 18executing program ) = 18 [pid 973] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 973] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 973] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 973] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 973] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 973] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 973] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[975]}, 88) = 975 [pid 973] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 973] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 973] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 975 attached [pid 968] <... openat resumed>) = 4 [pid 970] <... set_robust_list resumed>) = 0 [pid 972] set_robust_list(0x5555636e06a0, 24 [pid 968] ioctl(4, LOOP_SET_FD, 3 [pid 970] rt_sigprocmask(SIG_SETMASK, [], [pid 972] <... set_robust_list resumed>) = 0 [pid 968] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 972] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 970] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 968] ioctl(4, LOOP_CLR_FD [pid 972] <... prctl resumed>) = 0 [pid 970] memfd_create("syzkaller", 0 [pid 972] setpgid(0, 0 [pid 968] <... ioctl resumed>) = 0 [pid 972] <... setpgid resumed>) = 0 [pid 970] <... memfd_create resumed>) = 3 [pid 972] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 970] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 974 attached [pid 972] <... openat resumed>) = 3 [pid 970] <... mmap resumed>) = 0x7fe6f03b1000 [pid 972] write(3, "1000", 4 [pid 970] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 974] set_robust_list(0x7fe6f87d19a0, 24 [pid 972] <... write resumed>) = 4 [pid 968] ioctl(4, LOOP_SET_FD, 3 [pid 972] close(3 [pid 968] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 968] close(4 [pid 972] <... close resumed>) = 0 [pid 968] <... close resumed>) = 0 [pid 972] write(1, "executing program\n", 18 [pid 968] close(3executing program ) = 0 [pid 972] <... write resumed>) = 18 [pid 968] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 972] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 967] <... futex resumed>) = 0 [pid 968] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 972] <... futex resumed>) = 0 [pid 967] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 972] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 968] <... futex resumed>) = 0 [pid 967] <... futex resumed>) = 1 [pid 972] <... rt_sigaction resumed>NULL, 8) = 0 [pid 968] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 967] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 972] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 974] <... set_robust_list resumed>) = 0 [pid 972] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 970] <... write resumed>) = 262144 [pid 968] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 974] rt_sigprocmask(SIG_SETMASK, [], [pid 972] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 970] munmap(0x7fe6f03b1000, 138412032 [pid 968] <... futex resumed>) = 0 [pid 972] <... mmap resumed>) = 0x7fe6f87b1000 [pid 968] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 972] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 967] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 970] <... munmap resumed>) = 0 [pid 967] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 972] <... mprotect resumed>) = 0 [pid 974] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 970] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 968] <... futex resumed>) = 0 [pid 967] <... futex resumed>) = 1 [pid 972] rt_sigprocmask(SIG_BLOCK, ~[], [pid 968] creat("./bus", 000 [pid 967] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 972] <... rt_sigprocmask resumed>[], 8) = 0 [pid 970] <... openat resumed>) = 4 [pid 968] <... creat resumed>) = 3 [pid 974] memfd_create("syzkaller", 0 [pid 972] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 970] ioctl(4, LOOP_SET_FD, 3 [pid 968] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 970] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 968] <... futex resumed>) = 1 [pid 967] <... futex resumed>) = 0 [pid 974] <... memfd_create resumed>) = 3 [pid 972] <... clone3 resumed> => {parent_tid=[976]}, 88) = 976 [pid 970] ioctl(4, LOOP_CLR_FD [pid 968] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 967] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 974] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 972] rt_sigprocmask(SIG_SETMASK, [], [pid 970] <... ioctl resumed>) = 0 [pid 968] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 967] <... futex resumed>) = 0 [pid 974] <... mmap resumed>) = 0x7fe6f03b1000 [pid 972] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 968] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 967] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 972] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 968] <... openat resumed>) = 4 [pid 972] <... futex resumed>) = 0 [pid 968] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 967] <... futex resumed>) = 0 [pid 972] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 968] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 967] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 968] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 967] <... futex resumed>) = 0 [pid 968] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 967] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 970] ioctl(4, LOOP_SET_FD, 3 [pid 968] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 970] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 968] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 970] close(4 [pid 967] <... futex resumed>) = 0 [pid 968] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 967] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 970] <... close resumed>) = 0 [pid 968] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 967] <... futex resumed>) = 0 [pid 967] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 975] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 975] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 975] memfd_create("syzkaller", 0) = 3 [pid 975] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 968] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 970] close(3 [pid 968] <... open resumed>) = 5 [pid 968] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 967] <... futex resumed>) = 0 [pid 967] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 967] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 968] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 974] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 970] <... close resumed>) = 0 [pid 968] <... mmap resumed>) = 0x20000000 [pid 970] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 968] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 970] <... futex resumed>) = 1 [pid 969] <... futex resumed>) = 0 [pid 967] <... futex resumed>) = 0 [pid 970] chdir("./file0" [pid 969] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 968] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 967] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 970] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 969] <... futex resumed>) = 0 [pid 968] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 967] <... futex resumed>) = 0 [pid 970] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 969] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 968] memfd_create("syzkaller", 0 [pid 967] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 976 attached [pid 974] <... write resumed>) = 262144 [pid 970] <... futex resumed>) = 0 [pid 969] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 968] <... memfd_create resumed>) = 6 [pid 976] set_robust_list(0x7fe6f87d19a0, 24 [pid 974] munmap(0x7fe6f03b1000, 138412032 [pid 970] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 969] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 968] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 976] <... set_robust_list resumed>) = 0 [pid 974] <... munmap resumed>) = 0 [pid 970] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 969] <... futex resumed>) = 0 [pid 976] rt_sigprocmask(SIG_SETMASK, [], [pid 974] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 970] creat("./bus", 000 [pid 969] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 968] <... mmap resumed>) = 0x7fe6f03b1000 [pid 976] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 974] <... openat resumed>) = 4 [pid 970] <... creat resumed>) = 3 [pid 975] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 976] memfd_create("syzkaller", 0 [pid 974] ioctl(4, LOOP_SET_FD, 3 [pid 970] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 968] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 976] <... memfd_create resumed>) = 3 [pid 974] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 970] <... futex resumed>) = 1 [pid 969] <... futex resumed>) = 0 [pid 969] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 969] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 976] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 970] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 974] ioctl(4, LOOP_CLR_FD [pid 968] <... write resumed>) = 131072 [pid 976] <... mmap resumed>) = 0x7fe6f03b1000 [pid 974] <... ioctl resumed>) = 0 [pid 970] <... openat resumed>) = 4 [pid 968] munmap(0x7fe6f03b1000, 138412032 [pid 970] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 968] <... munmap resumed>) = 0 [pid 970] <... futex resumed>) = 1 [pid 969] <... futex resumed>) = 0 [pid 968] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 970] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 969] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 970] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 969] <... futex resumed>) = 0 [pid 968] <... openat resumed>) = 7 [pid 970] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 969] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 968] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 968] ioctl(7, LOOP_CLR_FD) = 0 [pid 974] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 976] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 975] <... write resumed>) = 262144 [pid 974] close(4) = 0 [pid 970] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 970] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 968] ioctl(7, LOOP_SET_FD, 6 [pid 970] <... futex resumed>) = 1 [pid 969] <... futex resumed>) = 0 [pid 968] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 970] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 969] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 968] close(7 [pid 970] <... open resumed>) = 5 [pid 969] <... futex resumed>) = 0 [pid 968] <... close resumed>) = 0 [pid 970] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 969] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 968] close(6 [pid 974] close(3 [pid 970] <... futex resumed>) = 0 [pid 969] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 974] <... close resumed>) = 0 [pid 970] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 969] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 968] <... close resumed>) = 0 [pid 969] <... futex resumed>) = 0 [pid 970] <... mmap resumed>) = 0x20000000 [pid 969] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 968] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 970] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 969] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 968] <... futex resumed>) = 1 [pid 967] <... futex resumed>) = 0 [pid 975] munmap(0x7fe6f03b1000, 138412032 [pid 974] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 970] <... futex resumed>) = 0 [pid 969] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 968] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 967] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 975] <... munmap resumed>) = 0 [pid 974] <... futex resumed>) = 1 [pid 971] <... futex resumed>) = 0 [pid 970] memfd_create("syzkaller", 0 [pid 969] <... futex resumed>) = 0 [pid 968] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 967] <... futex resumed>) = 0 [pid 975] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 974] chdir("./file0" [pid 971] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 970] <... memfd_create resumed>) = 6 [pid 969] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 968] mknod(0x20000000, 000 [pid 967] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 976] <... write resumed>) = 262144 [pid 975] <... openat resumed>) = 4 [pid 974] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 971] <... futex resumed>) = 0 [pid 970] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 968] <... mknod resumed>) = -1 EEXIST (File exists) [pid 976] munmap(0x7fe6f03b1000, 138412032 [pid 975] ioctl(4, LOOP_SET_FD, 3 [pid 974] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 971] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 970] <... mmap resumed>) = 0x7fe6f03b1000 [pid 968] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 976] <... munmap resumed>) = 0 [pid 975] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 974] <... futex resumed>) = 0 [pid 971] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 975] ioctl(4, LOOP_CLR_FD [pid 971] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 975] <... ioctl resumed>) = 0 [pid 971] <... futex resumed>) = 0 [pid 971] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 976] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 974] creat("./bus", 000 [pid 970] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 968] <... futex resumed>) = 1 [pid 967] <... futex resumed>) = 0 [pid 976] <... openat resumed>) = 4 [pid 974] <... creat resumed>) = 3 [pid 968] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 967] exit_group(0) = ? [pid 970] <... write resumed>) = 131072 [pid 968] <... futex resumed>) = ? [pid 974] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 976] ioctl(4, LOOP_SET_FD, 3 [pid 970] munmap(0x7fe6f03b1000, 138412032 [pid 975] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 975] close(4) = 0 [pid 975] close(3) = 0 [pid 974] <... futex resumed>) = 1 [pid 971] <... futex resumed>) = 0 [pid 970] <... munmap resumed>) = 0 [pid 968] +++ exited with 0 +++ [pid 967] +++ exited with 0 +++ [pid 975] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 971] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=967, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 975] <... futex resumed>) = 1 [pid 973] <... futex resumed>) = 0 [pid 971] <... futex resumed>) = 0 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 975] chdir("./file0" [pid 973] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 971] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 975] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 973] <... futex resumed>) = 0 [pid 975] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 973] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 975] <... futex resumed>) = 0 [pid 973] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 975] creat("./bus", 000 [pid 973] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 975] <... creat resumed>) = 3 [pid 973] <... futex resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 975] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 973] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 975] <... futex resumed>) = 0 [pid 974] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 976] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 973] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 970] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 976] ioctl(4, LOOP_CLR_FD [pid 975] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 974] <... openat resumed>) = 4 [pid 973] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 970] <... openat resumed>) = 7 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 976] <... ioctl resumed>) = 0 [pid 975] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 974] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 973] <... futex resumed>) = 0 [pid 970] ioctl(7, LOOP_SET_FD, 6 [pid 303] <... openat resumed>) = 3 [pid 975] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 974] <... futex resumed>) = 1 [pid 973] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 971] <... futex resumed>) = 0 [pid 970] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] ioctl(3, LOOP_CLR_FD [pid 975] <... openat resumed>) = 4 [pid 974] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 971] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 970] ioctl(7, LOOP_CLR_FD [pid 303] <... ioctl resumed>) = 0 [pid 976] ioctl(4, LOOP_SET_FD, 3 [pid 975] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 974] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 971] <... futex resumed>) = 0 [pid 970] <... ioctl resumed>) = 0 [pid 303] close(3 [pid 976] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 975] <... futex resumed>) = 1 [pid 974] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 973] <... futex resumed>) = 0 [pid 971] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... close resumed>) = 0 [pid 976] close(4 [pid 975] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 974] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 973] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 976] <... close resumed>) = 0 [pid 975] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 974] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 973] <... futex resumed>) = 0 [pid 976] close(3 [pid 975] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 974] <... futex resumed>) = 1 [pid 973] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 971] <... futex resumed>) = 0 [pid 970] ioctl(7, LOOP_SET_FD, 6 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 977 [pid 976] <... close resumed>) = 0 [pid 975] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 974] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 971] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 970] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 976] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 975] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 974] <... open resumed>) = 5 [pid 971] <... futex resumed>) = 0 [pid 970] close(7 [pid 976] <... futex resumed>) = 1 [pid 975] <... futex resumed>) = 1 [pid 974] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 973] <... futex resumed>) = 0 [pid 972] <... futex resumed>) = 0 [pid 971] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 970] <... close resumed>) = 0 [pid 976] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 975] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 974] <... futex resumed>) = 0 [pid 973] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 972] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 971] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 976] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 975] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 974] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 973] <... futex resumed>) = 0 [pid 971] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 970] close(6 [pid 975] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 973] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 971] <... futex resumed>) = 0 [pid 975] <... open resumed>) = 5 [pid 971] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 975] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 973] <... futex resumed>) = 0 [pid 975] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 973] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 975] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 973] <... futex resumed>) = 0 [pid 975] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 973] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 976] chdir("./file0" [pid 975] <... mmap resumed>) = 0x20000000 [pid 974] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 972] <... futex resumed>) = 0 [pid 975] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 974] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 970] <... close resumed>) = 0 [pid 976] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 975] <... futex resumed>) = 1 [pid 973] <... futex resumed>) = 0 [pid 972] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 976] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 975] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 974] <... mmap resumed>) = 0x20000000 [pid 973] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 970] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 976] <... futex resumed>) = 0 [pid 975] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 974] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 973] <... futex resumed>) = 0 [pid 972] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 970] <... futex resumed>) = 1 [pid 976] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 975] memfd_create("syzkaller", 0 [pid 974] <... futex resumed>) = 1 [pid 973] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 972] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 971] <... futex resumed>) = 0 [pid 970] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 969] <... futex resumed>) = 0 [pid 976] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 975] <... memfd_create resumed>) = 6 [pid 974] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 972] <... futex resumed>) = 0 [pid 971] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 969] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 977 attached [pid 976] creat("./bus", 000 [pid 975] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 974] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 972] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 971] <... futex resumed>) = 0 [pid 970] <... futex resumed>) = 0 [pid 969] <... futex resumed>) = 1 [pid 977] set_robust_list(0x5555636e06a0, 24 [pid 976] <... creat resumed>) = 3 [pid 975] <... mmap resumed>) = 0x7fe6f03b1000 [pid 974] memfd_create("syzkaller", 0 [pid 971] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 970] mknod(0x20000000, 000 [pid 969] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 977] <... set_robust_list resumed>) = 0 [pid 976] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 974] <... memfd_create resumed>) = 6 [pid 970] <... mknod resumed>) = -1 EEXIST (File exists) [pid 977] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 976] <... futex resumed>) = 1 [pid 974] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 972] <... futex resumed>) = 0 [pid 970] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 977] <... prctl resumed>) = 0 [pid 976] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 974] <... mmap resumed>) = 0x7fe6f03b1000 [pid 972] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 970] <... futex resumed>) = 1 [pid 969] <... futex resumed>) = 0 [pid 977] setpgid(0, 0 [pid 976] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 975] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 974] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 972] <... futex resumed>) = 0 [pid 977] <... setpgid resumed>) = 0 [pid 976] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 975] <... write resumed>) = 131072 [pid 970] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 969] exit_group(0 [pid 975] munmap(0x7fe6f03b1000, 138412032 [pid 974] <... write resumed>) = 131072 [pid 972] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 977] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 976] <... openat resumed>) = 4 [pid 975] <... munmap resumed>) = 0 [pid 974] munmap(0x7fe6f03b1000, 138412032 [pid 970] <... futex resumed>) = ? [pid 969] <... exit_group resumed>) = ? [pid 976] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 975] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 974] <... munmap resumed>) = 0 [pid 975] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 975] ioctl(7, LOOP_CLR_FD) = 0 [pid 976] <... futex resumed>) = 1 [pid 972] <... futex resumed>) = 0 [pid 970] +++ exited with 0 +++ [pid 974] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 969] +++ exited with 0 +++ [pid 976] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 972] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=969, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 976] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 974] <... openat resumed>) = 7 [pid 972] <... futex resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 976] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 974] ioctl(7, LOOP_SET_FD, 6 [pid 972] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 974] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 974] ioctl(7, LOOP_CLR_FD) = 0 [pid 977] <... openat resumed>) = 3 [pid 976] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 977] write(3, "1000", 4 [pid 976] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 975] ioctl(7, LOOP_SET_FD, 6 [pid 977] <... write resumed>) = 4 [pid 976] <... futex resumed>) = 1 [pid 975] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 972] <... futex resumed>) = 0 [pid 977] close(3 [pid 976] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 975] close(7 [pid 972] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 977] <... close resumed>) = 0 [pid 976] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 975] <... close resumed>) = 0 executing program [pid 972] <... futex resumed>) = 0 [pid 977] write(1, "executing program\n", 18 [pid 976] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 975] close(6 [pid 972] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 977] <... write resumed>) = 18 [pid 976] <... open resumed>) = 5 [pid 975] <... close resumed>) = 0 [pid 977] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 976] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 975] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 974] ioctl(7, LOOP_SET_FD, 6 [pid 977] <... futex resumed>) = 0 [pid 976] <... futex resumed>) = 1 [pid 975] <... futex resumed>) = 1 [pid 974] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 973] <... futex resumed>) = 0 [pid 972] <... futex resumed>) = 0 [pid 977] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 976] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 975] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 974] close(7 [pid 973] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 972] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 977] <... rt_sigaction resumed>NULL, 8) = 0 [pid 976] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 975] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 974] <... close resumed>) = 0 [pid 973] <... futex resumed>) = 0 [pid 972] <... futex resumed>) = 0 [pid 977] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 976] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 975] mknod(0x20000000, 000 [pid 974] close(6 [pid 973] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 977] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 976] <... mmap resumed>) = 0x20000000 [pid 975] <... mknod resumed>) = -1 EEXIST (File exists) [pid 972] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 977] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 975] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 977] <... mmap resumed>) = 0x7fe6f87b1000 [pid 975] <... futex resumed>) = 1 [pid 973] <... futex resumed>) = 0 [pid 977] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 976] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 975] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 974] <... close resumed>) = 0 [pid 973] exit_group(0 [pid 977] <... mprotect resumed>) = 0 [pid 976] <... futex resumed>) = 1 [pid 975] <... futex resumed>) = ? [pid 974] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 973] <... exit_group resumed>) = ? [pid 972] <... futex resumed>) = 0 [pid 977] rt_sigprocmask(SIG_BLOCK, ~[], [pid 976] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 975] +++ exited with 0 +++ [pid 974] <... futex resumed>) = 1 [pid 973] +++ exited with 0 +++ [pid 972] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 971] <... futex resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 977] <... rt_sigprocmask resumed>[], 8) = 0 [pid 976] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 974] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 972] <... futex resumed>) = 0 [pid 971] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=973, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 977] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 976] memfd_create("syzkaller", 0 [pid 974] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 972] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 971] <... futex resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 976] <... memfd_create resumed>) = 6 [pid 974] mknod(0x20000000, 000 [pid 971] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 302] <... restart_syscall resumed>) = 0 [pid 977] <... clone3 resumed> => {parent_tid=[979]}, 88) = 979 [pid 976] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 974] <... mknod resumed>) = -1 EEXIST (File exists) [pid 305] <... openat resumed>) = 3 [pid 977] rt_sigprocmask(SIG_SETMASK, [], [pid 976] <... mmap resumed>) = 0x7fe6f03b1000 [pid 974] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] ioctl(3, LOOP_CLR_FD [pid 977] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 977] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] close(3 [pid 302] <... openat resumed>) = 3 [pid 977] <... futex resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 977] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 302] <... ioctl resumed>) = 0 [pid 976] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 974] <... futex resumed>) = 1 [pid 971] <... futex resumed>) = 0 [pid 302] close(3 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 980 [pid 302] <... close resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 976] <... write resumed>) = 131072 [pid 974] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 971] exit_group(0 [pid 976] munmap(0x7fe6f03b1000, 138412032 [pid 974] <... futex resumed>) = ? [pid 971] <... exit_group resumed>) = ? [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 981 [pid 976] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 979 attached [pid 979] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 979] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 974] +++ exited with 0 +++ [pid 971] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=971, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 976] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 7 [pid 976] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 976] ioctl(7, LOOP_CLR_FD) = 0 [pid 979] memfd_create("syzkaller", 0) = 3 [pid 979] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 979] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 980 attached [pid 976] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 981 attached [pid 976] close(7 [pid 980] set_robust_list(0x5555636e06a0, 24 [pid 976] <... close resumed>) = 0 [pid 980] <... set_robust_list resumed>) = 0 [pid 976] close(6 [pid 981] set_robust_list(0x5555636e06a0, 24) = 0 [pid 976] <... close resumed>) = 0 [pid 976] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 980] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 976] <... futex resumed>) = 1 [pid 972] <... futex resumed>) = 0 [pid 980] <... prctl resumed>) = 0 [pid 976] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 972] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 976] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 980] setpgid(0, 0 [pid 976] mknod(0x20000000, 000 [pid 972] <... futex resumed>) = 0 [pid 976] <... mknod resumed>) = -1 EEXIST (File exists) [pid 980] <... setpgid resumed>) = 0 [pid 976] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 972] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 976] <... futex resumed>) = 0 [pid 972] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 976] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 980] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 972] exit_group(0 [pid 976] <... futex resumed>) = ? [pid 972] <... exit_group resumed>) = ? [pid 981] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 976] +++ exited with 0 +++ [pid 981] <... prctl resumed>) = 0 [pid 981] setpgid(0, 0) = 0 [pid 981] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 972] +++ exited with 0 +++ [pid 980] <... openat resumed>) = 3 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=972, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 981] write(3, "1000", 4) = 4 [pid 981] close(3) = 0 executing program [pid 981] write(1, "executing program\n", 18) = 18 [pid 306] <... restart_syscall resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 306] ioctl(3, LOOP_CLR_FD [pid 304] <... openat resumed>) = 3 [pid 306] <... ioctl resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 306] close(3 [pid 304] <... ioctl resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 304] close(3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 304] <... close resumed>) = 0 [pid 981] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 981] <... futex resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 982 [pid 981] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 983 [pid 981] <... rt_sigaction resumed>NULL, 8) = 0 [pid 981] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 981] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 981] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 981] rt_sigprocmask(SIG_BLOCK, ~[], [pid 980] write(3, "1000", 4 [pid 981] <... rt_sigprocmask resumed>[], 8) = 0 [pid 979] <... write resumed>) = 262144 [pid 981] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[984]}, 88) = 984 [pid 981] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 981] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 981] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 979] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 979] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 979] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 979] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 984 attached [pid 984] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 984] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 984] memfd_create("syzkaller", 0) = 3 [pid 979] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 979] close(4) = 0 [pid 979] close(3) = 0 [pid 979] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 977] <... futex resumed>) = 0 [pid 977] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 977] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 979] <... futex resumed>) = 1 [pid 979] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 979] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 977] <... futex resumed>) = 0 [pid 979] <... futex resumed>) = 1 [pid 977] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 979] creat("./bus", 000 [pid 977] <... futex resumed>) = 0 [pid 979] <... creat resumed>) = 3 [pid 977] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 979] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 977] <... futex resumed>) = 0 [pid 979] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 977] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 979] <... openat resumed>) = 4 [pid 977] <... futex resumed>) = 0 [pid 979] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 977] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 979] <... futex resumed>) = 0 [pid 977] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 979] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 977] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 979] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 977] <... futex resumed>) = 0 [pid 979] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 977] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 983 attached ./strace-static-x86_64: Process 982 attached [pid 980] <... write resumed>) = 4 [pid 979] <... futex resumed>) = 0 [pid 977] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 983] set_robust_list(0x5555636e06a0, 24 [pid 982] set_robust_list(0x5555636e06a0, 24 [pid 980] close(3 [pid 979] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 977] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 983] <... set_robust_list resumed>) = 0 [pid 982] <... set_robust_list resumed>) = 0 [pid 980] <... close resumed>) = 0 [pid 979] <... open resumed>) = 5 [pid 977] <... futex resumed>) = 0 executing program [pid 983] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 980] write(1, "executing program\n", 18 [pid 979] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 977] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 983] <... prctl resumed>) = 0 [pid 982] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 980] <... write resumed>) = 18 [pid 979] <... futex resumed>) = 0 [pid 977] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 983] setpgid(0, 0 [pid 982] <... prctl resumed>) = 0 [pid 980] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 979] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 977] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 983] <... setpgid resumed>) = 0 [pid 982] setpgid(0, 0 [pid 980] <... futex resumed>) = 0 [pid 979] <... mmap resumed>) = 0x20000000 [pid 977] <... futex resumed>) = 0 [pid 983] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 982] <... setpgid resumed>) = 0 [pid 980] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 979] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 977] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 983] <... openat resumed>) = 3 [pid 982] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 980] <... rt_sigaction resumed>NULL, 8) = 0 [pid 979] <... futex resumed>) = 0 [pid 977] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 983] write(3, "1000", 4 [pid 982] <... openat resumed>) = 3 [pid 980] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 979] memfd_create("syzkaller", 0 [pid 977] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 984] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 983] <... write resumed>) = 4 [pid 982] write(3, "1000", 4 [pid 980] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 979] <... memfd_create resumed>) = 6 [pid 977] <... futex resumed>) = 0 [pid 984] <... mmap resumed>) = 0x7fe6f03b1000 [pid 983] close(3 [pid 982] <... write resumed>) = 4 [pid 980] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 979] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 977] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 984] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 983] <... close resumed>) = 0 [pid 982] close(3 [pid 980] <... mmap resumed>) = 0x7fe6f87b1000 [pid 979] <... mmap resumed>) = 0x7fe6f03b1000 executing program [pid 983] write(1, "executing program\n", 18 [pid 982] <... close resumed>) = 0 [pid 980] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 979] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072executing program [pid 983] <... write resumed>) = 18 [pid 982] write(1, "executing program\n", 18 [pid 980] <... mprotect resumed>) = 0 [pid 979] <... write resumed>) = 131072 [pid 983] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 982] <... write resumed>) = 18 [pid 980] rt_sigprocmask(SIG_BLOCK, ~[], [pid 979] munmap(0x7fe6f03b1000, 138412032 [pid 983] <... futex resumed>) = 0 [pid 982] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 980] <... rt_sigprocmask resumed>[], 8) = 0 [pid 983] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 982] <... futex resumed>) = 0 [pid 980] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 983] <... rt_sigaction resumed>NULL, 8) = 0 [pid 982] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 983] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 982] <... rt_sigaction resumed>NULL, 8) = 0 [pid 979] <... munmap resumed>) = 0 [pid 983] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 982] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 980] <... clone3 resumed> => {parent_tid=[985]}, 88) = 985 [pid 983] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 982] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 980] rt_sigprocmask(SIG_SETMASK, [], [pid 983] <... mmap resumed>) = 0x7fe6f87b1000 [pid 982] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 980] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 984] <... write resumed>) = 262144 [pid 979] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 7 [pid 979] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 979] ioctl(7, LOOP_CLR_FD) = 0 [pid 984] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 984] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 984] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 984] ioctl(4, LOOP_CLR_FD [pid 979] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 979] close(7) = 0 [pid 979] close(6) = 0 [pid 979] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 977] <... futex resumed>) = 0 [pid 984] <... ioctl resumed>) = 0 [pid 979] mknod(0x20000000, 000 [pid 977] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 983] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 982] <... mmap resumed>) = 0x7fe6f87b1000 [pid 980] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 979] <... mknod resumed>) = -1 EEXIST (File exists) [pid 977] <... futex resumed>) = 0 [pid 983] <... mprotect resumed>) = 0 [pid 982] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 980] <... futex resumed>) = 0 [pid 979] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 977] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 983] rt_sigprocmask(SIG_BLOCK, ~[], [pid 982] <... mprotect resumed>) = 0 [pid 980] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 979] <... futex resumed>) = 0 [pid 977] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 983] <... rt_sigprocmask resumed>[], 8) = 0 [pid 982] rt_sigprocmask(SIG_BLOCK, ~[], [pid 979] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 977] exit_group(0 [pid 983] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 982] <... rt_sigprocmask resumed>[], 8) = 0 [pid 979] <... futex resumed>) = ? [pid 977] <... exit_group resumed>) = ? [pid 982] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 979] +++ exited with 0 +++ [pid 977] +++ exited with 0 +++ [pid 984] ioctl(4, LOOP_SET_FD, 3 [pid 983] <... clone3 resumed> => {parent_tid=[986]}, 88) = 986 [pid 984] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 983] rt_sigprocmask(SIG_SETMASK, [], [pid 982] <... clone3 resumed> => {parent_tid=[987]}, 88) = 987 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=977, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 984] close(4 [pid 983] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 982] rt_sigprocmask(SIG_SETMASK, [], [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 984] <... close resumed>) = 0 [pid 983] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 982] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 985 attached [pid 984] close(3 [pid 983] <... futex resumed>) = 0 [pid 982] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 983] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 985] set_robust_list(0x7fe6f87d19a0, 24 [pid 982] <... futex resumed>) = 0 [pid 985] <... set_robust_list resumed>) = 0 [pid 984] <... close resumed>) = 0 [pid 982] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 985] rt_sigprocmask(SIG_SETMASK, [], [pid 984] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 981] <... futex resumed>) = 0 [pid 984] chdir("./file0" [pid 981] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 984] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 981] <... futex resumed>) = 0 [pid 984] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 981] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 984] <... futex resumed>) = 0 [pid 981] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 984] creat("./bus", 000 [pid 981] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 984] <... creat resumed>) = 3 [pid 981] <... futex resumed>) = 0 [pid 984] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 981] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 984] <... futex resumed>) = 0 [pid 981] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 984] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 981] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 984] <... openat resumed>) = 4 [pid 981] <... futex resumed>) = 0 [pid 984] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 981] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 984] <... futex resumed>) = 0 [pid 981] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 984] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 981] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 981] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 986 attached [pid 986] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 986] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 986] memfd_create("syzkaller", 0) = 3 [pid 986] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 985] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 984] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 984] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 981] <... futex resumed>) = 0 [pid 984] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 981] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 984] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 981] <... futex resumed>) = 0 [pid 984] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 981] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 984] <... open resumed>) = 5 [pid 984] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 981] <... futex resumed>) = 0 [pid 984] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 981] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 984] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 981] <... futex resumed>) = 0 [pid 984] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 981] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 984] <... mmap resumed>) = 0x20000000 [pid 984] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 981] <... futex resumed>) = 0 [pid 984] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 981] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 984] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 981] <... futex resumed>) = 0 ./strace-static-x86_64: Process 987 attached [pid 984] memfd_create("syzkaller", 0 [pid 981] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 987] set_robust_list(0x7fe6f87d19a0, 24 [pid 984] <... memfd_create resumed>) = 6 [pid 987] <... set_robust_list resumed>) = 0 [pid 984] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 987] rt_sigprocmask(SIG_SETMASK, [], [pid 984] <... mmap resumed>) = 0x7fe6f03b1000 [pid 303] <... restart_syscall resumed>) = 0 [pid 987] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 984] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 987] memfd_create("syzkaller", 0 [pid 984] <... write resumed>) = 131072 [pid 987] <... memfd_create resumed>) = 3 [pid 984] munmap(0x7fe6f03b1000, 138412032 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 987] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 984] <... munmap resumed>) = 0 [pid 303] <... openat resumed>) = 3 [pid 987] <... mmap resumed>) = 0x7fe6f03b1000 [pid 986] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 984] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 303] ioctl(3, LOOP_CLR_FD [pid 987] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 986] <... write resumed>) = 262144 [pid 985] memfd_create("syzkaller", 0 [pid 984] <... openat resumed>) = 7 [pid 303] <... ioctl resumed>) = 0 [pid 985] <... memfd_create resumed>) = 3 [pid 984] ioctl(7, LOOP_SET_FD, 6 [pid 303] close(3 [pid 985] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 984] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] <... close resumed>) = 0 [pid 985] <... mmap resumed>) = 0x7fe6f03b1000 [pid 984] ioctl(7, LOOP_CLR_FD [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 984] <... ioctl resumed>) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 988 [pid 987] <... write resumed>) = 262144 [pid 985] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 984] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 984] close(7 [pid 986] munmap(0x7fe6f03b1000, 138412032 [pid 984] <... close resumed>) = 0 [pid 986] <... munmap resumed>) = 0 [pid 984] close(6 [pid 986] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 984] <... close resumed>) = 0 [pid 986] <... openat resumed>) = 4 [pid 984] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 986] ioctl(4, LOOP_SET_FD, 3 [pid 984] <... futex resumed>) = 1 [pid 981] <... futex resumed>) = 0 [pid 986] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 984] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 981] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 986] ioctl(4, LOOP_CLR_FD [pid 984] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 981] <... futex resumed>) = 0 [pid 986] <... ioctl resumed>) = 0 [pid 984] mknod(0x20000000, 000 [pid 981] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 984] <... mknod resumed>) = -1 EEXIST (File exists) [pid 984] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 981] <... futex resumed>) = 0 [pid 984] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 981] exit_group(0 [pid 984] <... futex resumed>) = ? [pid 981] <... exit_group resumed>) = ? [pid 987] munmap(0x7fe6f03b1000, 138412032 [pid 984] +++ exited with 0 +++ [pid 981] +++ exited with 0 +++ [pid 985] <... write resumed>) = 262144 [pid 987] <... munmap resumed>) = 0 [pid 986] ioctl(4, LOOP_SET_FD, 3 [pid 985] munmap(0x7fe6f03b1000, 138412032 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=981, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 987] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 986] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 985] <... munmap resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 987] <... openat resumed>) = 4 [pid 986] close(4 [pid 985] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 987] ioctl(4, LOOP_SET_FD, 3 [pid 986] <... close resumed>) = 0 [pid 985] <... openat resumed>) = 4 [pid 987] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 986] close(3 [pid 985] ioctl(4, LOOP_SET_FD, 3 [pid 987] ioctl(4, LOOP_CLR_FD [pid 986] <... close resumed>) = 0 [pid 985] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 987] <... ioctl resumed>) = 0 [pid 986] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 985] ioctl(4, LOOP_CLR_FD [pid 986] <... futex resumed>) = 1 [pid 985] <... ioctl resumed>) = 0 [pid 983] <... futex resumed>) = 0 [pid 986] chdir("./file0" [pid 983] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 988 attached [pid 986] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 983] <... futex resumed>) = 0 [pid 988] set_robust_list(0x5555636e06a0, 24 [pid 986] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 983] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 988] <... set_robust_list resumed>) = 0 [pid 986] <... futex resumed>) = 0 [pid 983] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 988] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 986] creat("./bus", 000 [pid 983] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 985] ioctl(4, LOOP_SET_FD, 3 [pid 983] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 985] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 988] <... prctl resumed>) = 0 [pid 987] ioctl(4, LOOP_SET_FD, 3 [pid 986] <... creat resumed>) = 3 [pid 985] close(4 [pid 988] setpgid(0, 0 [pid 987] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 986] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 985] <... close resumed>) = 0 [pid 988] <... setpgid resumed>) = 0 [pid 987] close(4 [pid 986] <... futex resumed>) = 1 [pid 985] close(3 [pid 983] <... futex resumed>) = 0 [pid 988] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 987] <... close resumed>) = 0 [pid 986] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 302] <... restart_syscall resumed>) = 0 [pid 988] <... openat resumed>) = 3 [pid 987] close(3 [pid 985] <... close resumed>) = 0 [pid 983] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 988] write(3, "1000", 4 [pid 987] <... close resumed>) = 0 [pid 986] <... futex resumed>) = 0 [pid 985] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 983] <... futex resumed>) = 1 [pid 988] <... write resumed>) = 4 [pid 987] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 986] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 985] <... futex resumed>) = 1 [pid 983] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 980] <... futex resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 988] close(3 [pid 987] <... futex resumed>) = 1 [pid 986] <... openat resumed>) = 4 [pid 985] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 982] <... futex resumed>) = 0 [pid 980] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... openat resumed>) = 3 [pid 988] <... close resumed>) = 0 [pid 987] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 986] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 985] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 982] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 980] <... futex resumed>) = 0 executing program [pid 302] ioctl(3, LOOP_CLR_FD [pid 988] write(1, "executing program\n", 18 [pid 987] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 986] <... futex resumed>) = 1 [pid 985] chdir("./file0" [pid 983] <... futex resumed>) = 0 [pid 982] <... futex resumed>) = 0 [pid 980] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] <... ioctl resumed>) = 0 [pid 988] <... write resumed>) = 18 [pid 987] chdir("./file0" [pid 986] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 985] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 983] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 982] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] close(3 [pid 988] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 987] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 986] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 302] <... close resumed>) = 0 [pid 988] <... futex resumed>) = 0 [pid 987] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 986] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 988] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 987] <... futex resumed>) = 0 [pid 986] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 985] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 983] <... futex resumed>) = 0 [pid 982] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 988] <... rt_sigaction resumed>NULL, 8) = 0 [pid 987] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 986] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 989 [pid 988] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 986] <... futex resumed>) = 0 [pid 988] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 986] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 988] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 988] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 988] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 988] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[990]}, 88) = 990 [pid 988] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 988] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 988] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 989 attached [pid 985] <... futex resumed>) = 1 [pid 983] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 982] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 980] <... futex resumed>) = 0 [pid 987] <... futex resumed>) = 0 [pid 985] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 983] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 982] <... futex resumed>) = 1 [pid 980] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 987] creat("./bus", 000 [pid 985] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 983] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 982] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 987] <... creat resumed>) = 3 [pid 986] <... futex resumed>) = 0 [pid 985] creat("./bus", 000 [pid 983] <... futex resumed>) = 1 [pid 980] <... futex resumed>) = 0 [pid 987] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 986] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 985] <... creat resumed>) = 3 [pid 983] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 980] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 987] <... futex resumed>) = 1 [pid 986] <... open resumed>) = 5 [pid 985] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 982] <... futex resumed>) = 0 [pid 980] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 987] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 986] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 985] <... futex resumed>) = 0 [pid 982] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 980] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 987] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 986] <... futex resumed>) = 1 [pid 985] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 983] <... futex resumed>) = 0 [pid 982] <... futex resumed>) = 0 [pid 980] <... futex resumed>) = 0 [pid 987] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 986] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 987] <... openat resumed>) = 4 [pid 986] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 985] <... openat resumed>) = 4 [pid 983] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 982] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 980] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 987] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 986] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 985] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 983] <... futex resumed>) = 0 [pid 982] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 980] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ./strace-static-x86_64: Process 990 attached [pid 987] <... futex resumed>) = 0 [pid 986] <... mmap resumed>) = 0x20000000 [pid 985] <... futex resumed>) = 0 [pid 983] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 982] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 980] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 987] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 986] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 990] set_robust_list(0x7fe6f87d19a0, 24 [pid 987] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 986] <... futex resumed>) = 0 [pid 985] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 983] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 982] <... futex resumed>) = 0 [pid 980] <... futex resumed>) = 0 [pid 987] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 986] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 990] <... set_robust_list resumed>) = 0 [pid 989] set_robust_list(0x5555636e06a0, 24 [pid 987] <... futex resumed>) = 0 [pid 986] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 985] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 983] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 982] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 980] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 990] rt_sigprocmask(SIG_SETMASK, [], [pid 989] <... set_robust_list resumed>) = 0 [pid 987] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 986] memfd_create("syzkaller", 0 [pid 985] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 983] <... futex resumed>) = 0 [pid 982] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 980] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 990] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 989] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 986] <... memfd_create resumed>) = 6 [pid 985] <... futex resumed>) = 0 [pid 983] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 982] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 980] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 990] memfd_create("syzkaller", 0 [pid 989] <... prctl resumed>) = 0 [pid 987] <... futex resumed>) = 0 [pid 986] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 985] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 982] <... futex resumed>) = 1 [pid 980] <... futex resumed>) = 0 [pid 990] <... memfd_create resumed>) = 3 [pid 989] setpgid(0, 0 [pid 987] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 986] <... mmap resumed>) = 0x7fe6f03b1000 [pid 985] <... open resumed>) = 5 [pid 982] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 980] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 990] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 989] <... setpgid resumed>) = 0 [pid 987] <... open resumed>) = 5 [pid 986] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 985] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 980] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 990] <... mmap resumed>) = 0x7fe6f03b1000 [pid 989] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 987] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 986] <... write resumed>) = 131072 [pid 985] <... futex resumed>) = 0 [pid 980] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 989] <... openat resumed>) = 3 [pid 987] <... futex resumed>) = 1 [pid 986] munmap(0x7fe6f03b1000, 138412032 [pid 989] write(3, "1000", 4 [pid 987] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 986] <... munmap resumed>) = 0 [pid 989] <... write resumed>) = 4 [pid 986] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 989] close(3 [pid 986] <... openat resumed>) = 7 [pid 989] <... close resumed>) = 0 [pid 986] ioctl(7, LOOP_SET_FD, 6executing program [pid 989] write(1, "executing program\n", 18 [pid 986] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 989] <... write resumed>) = 18 [pid 986] ioctl(7, LOOP_CLR_FD [pid 989] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 986] <... ioctl resumed>) = 0 [pid 989] <... futex resumed>) = 0 [pid 989] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 990] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 989] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 985] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 982] <... futex resumed>) = 0 [pid 980] <... futex resumed>) = 0 [pid 989] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 989] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 985] <... mmap resumed>) = 0x20000000 [pid 982] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 980] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 989] <... mmap resumed>) = 0x7fe6f87b1000 [pid 987] <... futex resumed>) = 0 [pid 985] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 982] <... futex resumed>) = 1 [pid 980] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 989] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 987] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 985] <... futex resumed>) = 0 [pid 982] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 980] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 990] <... write resumed>) = 262144 [pid 989] <... mprotect resumed>) = 0 [pid 987] <... mmap resumed>) = 0x20000000 [pid 986] ioctl(7, LOOP_SET_FD, 6 [pid 985] memfd_create("syzkaller", 0 [pid 980] <... futex resumed>) = 0 [pid 990] munmap(0x7fe6f03b1000, 138412032 [pid 989] rt_sigprocmask(SIG_BLOCK, ~[], [pid 987] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 986] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 985] <... memfd_create resumed>) = 6 [pid 980] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 989] <... rt_sigprocmask resumed>[], 8) = 0 [pid 987] <... futex resumed>) = 1 [pid 986] close(7 [pid 989] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 987] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 986] <... close resumed>) = 0 [pid 986] close(6 [pid 989] <... clone3 resumed> => {parent_tid=[991]}, 88) = 991 [pid 986] <... close resumed>) = 0 [pid 989] rt_sigprocmask(SIG_SETMASK, [], [pid 986] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 989] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 986] <... futex resumed>) = 1 [pid 989] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 986] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 989] <... futex resumed>) = 0 [pid 989] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 991 attached [pid 991] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 991] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 991] memfd_create("syzkaller", 0) = 3 [pid 991] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 982] <... futex resumed>) = 0 [pid 985] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 983] <... futex resumed>) = 0 [pid 982] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 985] <... mmap resumed>) = 0x7fe6f03b1000 [pid 983] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 987] <... futex resumed>) = 0 [pid 982] <... futex resumed>) = 1 [pid 987] memfd_create("syzkaller", 0) = 6 [pid 987] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 990] <... munmap resumed>) = 0 [pid 987] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 986] <... futex resumed>) = 0 [pid 985] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 983] <... futex resumed>) = 1 [pid 982] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 990] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 987] <... write resumed>) = 131072 [pid 986] mknod(0x20000000, 000 [pid 987] munmap(0x7fe6f03b1000, 138412032 [pid 986] <... mknod resumed>) = -1 EEXIST (File exists) [pid 990] <... openat resumed>) = 4 [pid 987] <... munmap resumed>) = 0 [pid 986] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 985] <... write resumed>) = 131072 [pid 983] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 990] ioctl(4, LOOP_SET_FD, 3 [pid 987] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 986] <... futex resumed>) = 0 [pid 985] munmap(0x7fe6f03b1000, 138412032 [pid 983] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 990] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 987] <... openat resumed>) = 7 [pid 986] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 990] ioctl(4, LOOP_CLR_FD [pid 987] ioctl(7, LOOP_SET_FD, 6 [pid 985] <... munmap resumed>) = 0 [pid 983] exit_group(0 [pid 990] <... ioctl resumed>) = 0 [pid 987] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 985] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 986] <... futex resumed>) = ? [pid 983] <... exit_group resumed>) = ? [pid 987] ioctl(7, LOOP_CLR_FD [pid 986] +++ exited with 0 +++ [pid 985] <... openat resumed>) = 7 [pid 987] <... ioctl resumed>) = 0 [pid 991] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 985] ioctl(7, LOOP_SET_FD, 6 [pid 983] +++ exited with 0 +++ [pid 985] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=983, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 985] ioctl(7, LOOP_CLR_FD [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 985] <... ioctl resumed>) = 0 [pid 987] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 987] close(7 [pid 304] <... restart_syscall resumed>) = 0 [pid 987] <... close resumed>) = 0 [pid 990] ioctl(4, LOOP_SET_FD, 3 [pid 987] close(6 [pid 990] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 987] <... close resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 990] close(4 [pid 987] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... openat resumed>) = 3 [pid 990] <... close resumed>) = 0 [pid 987] <... futex resumed>) = 1 [pid 985] ioctl(7, LOOP_SET_FD, 6 [pid 982] <... futex resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 990] close(3 [pid 987] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 985] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 982] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... ioctl resumed>) = 0 [pid 987] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 304] close(3 [pid 987] mknod(0x20000000, 000 [pid 304] <... close resumed>) = 0 [pid 987] <... mknod resumed>) = -1 EEXIST (File exists) [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 990] <... close resumed>) = 0 [pid 987] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 985] close(7 [pid 982] <... futex resumed>) = 0 [pid 990] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 987] <... futex resumed>) = 0 [pid 985] <... close resumed>) = 0 [pid 982] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 992 [pid 990] <... futex resumed>) = 1 [pid 988] <... futex resumed>) = 0 [pid 987] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 985] close(6 [pid 982] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 990] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 988] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 988] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 990] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 985] <... close resumed>) = 0 [pid 982] exit_group(0 [pid 990] chdir("./file0" [pid 985] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 990] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 987] <... futex resumed>) = ? [pid 985] <... futex resumed>) = 1 [pid 982] <... exit_group resumed>) = ? [pid 980] <... futex resumed>) = 0 [pid 990] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 987] +++ exited with 0 +++ [pid 985] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 990] <... futex resumed>) = 1 [pid 988] <... futex resumed>) = 0 [pid 985] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 982] +++ exited with 0 +++ [pid 980] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 990] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 988] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 985] mknod(0x20000000, 000 [pid 980] <... futex resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=982, si_uid=0, si_status=0, si_utime=1, si_stime=0} --- [pid 990] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 988] <... futex resumed>) = 0 [pid 985] <... mknod resumed>) = -1 EEXIST (File exists) [pid 980] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 990] creat("./bus", 000 [pid 988] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 985] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 980] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 990] <... creat resumed>) = 3 [pid 985] <... futex resumed>) = 0 [pid 990] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 985] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 980] exit_group(0 [pid 990] <... futex resumed>) = 1 [pid 988] <... futex resumed>) = 0 [pid 980] <... exit_group resumed>) = ? [pid 990] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 988] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 985] <... futex resumed>) = ? [pid 991] <... write resumed>) = 262144 [pid 990] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 988] <... futex resumed>) = 0 [pid 991] munmap(0x7fe6f03b1000, 138412032 [pid 988] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 991] <... munmap resumed>) = 0 [pid 991] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 985] +++ exited with 0 +++ [pid 990] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 980] +++ exited with 0 +++ [pid 991] ioctl(4, LOOP_SET_FD, 3 [pid 990] <... openat resumed>) = 4 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=980, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 991] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 990] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 991] ioctl(4, LOOP_CLR_FD [pid 990] <... futex resumed>) = 1 [pid 988] <... futex resumed>) = 0 [pid 991] <... ioctl resumed>) = 0 [pid 990] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 988] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 990] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 988] <... futex resumed>) = 0 [pid 990] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 988] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 990] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 990] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 988] <... futex resumed>) = 0 [pid 990] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 988] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 990] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 988] <... futex resumed>) = 0 [pid 990] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 988] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 990] <... open resumed>) = 5 [pid 990] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 988] <... futex resumed>) = 0 [pid 991] ioctl(4, LOOP_SET_FD, 3 [pid 990] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 988] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 991] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 990] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 988] <... futex resumed>) = 0 [pid 991] close(4 [pid 990] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 988] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... restart_syscall resumed>) = 0 [pid 991] <... close resumed>) = 0 [pid 990] <... mmap resumed>) = 0x20000000 [pid 305] <... restart_syscall resumed>) = 0 [pid 991] close(3 [pid 990] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 991] <... close resumed>) = 0 [pid 990] <... futex resumed>) = 1 [pid 988] <... futex resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR./strace-static-x86_64: Process 992 attached [pid 991] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 990] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 988] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... openat resumed>) = 3 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 992] set_robust_list(0x5555636e06a0, 24 [pid 991] <... futex resumed>) = 1 [pid 990] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 989] <... futex resumed>) = 0 [pid 988] <... futex resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 305] <... openat resumed>) = 3 [pid 992] <... set_robust_list resumed>) = 0 [pid 991] chdir("./file0" [pid 990] memfd_create("syzkaller", 0 [pid 989] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 988] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 306] <... ioctl resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 992] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 991] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 990] <... memfd_create resumed>) = 6 [pid 989] <... futex resumed>) = 0 [pid 306] close(3 [pid 305] <... ioctl resumed>) = 0 [pid 992] <... prctl resumed>) = 0 [pid 991] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 990] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 989] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... close resumed>) = 0 [pid 305] close(3 [pid 992] setpgid(0, 0 [pid 991] <... futex resumed>) = 0 [pid 990] <... mmap resumed>) = 0x7fe6f03b1000 [pid 989] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... close resumed>) = 0 [pid 991] creat("./bus", 000 [pid 989] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 991] <... creat resumed>) = 3 [pid 989] <... futex resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 993 [pid 992] <... setpgid resumed>) = 0 [pid 991] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 990] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 989] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 994 [pid 991] <... futex resumed>) = 0 [pid 989] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 991] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 989] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 991] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 989] <... futex resumed>) = 0 [pid 991] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 990] <... write resumed>) = 131072 [pid 989] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 992] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 991] <... openat resumed>) = 4 [pid 990] munmap(0x7fe6f03b1000, 138412032 [pid 991] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 990] <... munmap resumed>) = 0 [pid 989] <... futex resumed>) = 0 [pid 992] <... openat resumed>) = 3 [pid 991] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 990] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 989] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 991] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 990] <... openat resumed>) = 7 [pid 989] <... futex resumed>) = 0 [pid 992] write(3, "1000", 4 [pid 991] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 990] ioctl(7, LOOP_SET_FD, 6 [pid 989] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 992] <... write resumed>) = 4 [pid 991] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 990] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 992] close(3 [pid 991] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 990] ioctl(7, LOOP_CLR_FD [pid 992] <... close resumed>) = 0 [pid 991] <... futex resumed>) = 1 executing program [pid 990] <... ioctl resumed>) = 0 [pid 989] <... futex resumed>) = 0 [pid 992] write(1, "executing program\n", 18 [pid 991] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 989] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 992] <... write resumed>) = 18 [pid 991] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 989] <... futex resumed>) = 0 [pid 992] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 991] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 989] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 992] <... futex resumed>) = 0 [pid 991] <... open resumed>) = 5 [pid 992] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 991] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 994 attached [pid 992] <... rt_sigaction resumed>NULL, 8) = 0 [pid 991] <... futex resumed>) = 1 [pid 989] <... futex resumed>) = 0 [pid 994] set_robust_list(0x5555636e06a0, 24 [pid 992] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 991] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 989] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 994] <... set_robust_list resumed>) = 0 [pid 992] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 991] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 989] <... futex resumed>) = 0 [pid 992] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 991] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 990] ioctl(7, LOOP_SET_FD, 6 [pid 989] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 994] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 992] <... mmap resumed>) = 0x7fe6f87b1000 [pid 991] <... mmap resumed>) = 0x20000000 [pid 990] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 994] <... prctl resumed>) = 0 [pid 992] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 991] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 990] close(7 [pid 994] setpgid(0, 0 [pid 992] <... mprotect resumed>) = 0 [pid 991] <... futex resumed>) = 1 [pid 989] <... futex resumed>) = 0 [pid 994] <... setpgid resumed>) = 0 [pid 992] rt_sigprocmask(SIG_BLOCK, ~[], [pid 991] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 990] <... close resumed>) = 0 [pid 989] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 992] <... rt_sigprocmask resumed>[], 8) = 0 [pid 991] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 990] close(6 [pid 989] <... futex resumed>) = 0 [pid 992] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 991] memfd_create("syzkaller", 0 [pid 989] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 993 attached [pid 991] <... memfd_create resumed>) = 6 [pid 990] <... close resumed>) = 0 [pid 993] set_robust_list(0x5555636e06a0, 24 [pid 991] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 990] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 993] <... set_robust_list resumed>) = 0 [pid 991] <... mmap resumed>) = 0x7fe6f03b1000 [pid 993] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 992] <... clone3 resumed> => {parent_tid=[995]}, 88) = 995 [pid 991] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 990] <... futex resumed>) = 1 [pid 988] <... futex resumed>) = 0 [pid 993] <... prctl resumed>) = 0 [pid 992] rt_sigprocmask(SIG_SETMASK, [], [pid 991] <... write resumed>) = 131072 [pid 988] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 994] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 993] setpgid(0, 0 [pid 992] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 991] munmap(0x7fe6f03b1000, 138412032 [pid 990] mknod(0x20000000, 000 [pid 988] <... futex resumed>) = 0 [pid 994] <... openat resumed>) = 3 [pid 993] <... setpgid resumed>) = 0 [pid 992] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 991] <... munmap resumed>) = 0 [pid 990] <... mknod resumed>) = -1 EEXIST (File exists) [pid 988] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 994] write(3, "1000", 4 [pid 993] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 992] <... futex resumed>) = 0 [pid 991] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 990] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 988] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 994] <... write resumed>) = 4 [pid 993] <... openat resumed>) = 3 [pid 992] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 991] <... openat resumed>) = 7 [pid 990] <... futex resumed>) = 0 [pid 988] exit_group(0 [pid 994] close(3 [pid 993] write(3, "1000", 4 [pid 991] ioctl(7, LOOP_SET_FD, 6 [pid 988] <... exit_group resumed>) = ? [pid 993] <... write resumed>) = 4 [pid 991] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 990] +++ exited with 0 +++ [pid 988] +++ exited with 0 +++ [pid 993] close(3 [pid 991] ioctl(7, LOOP_CLR_FD [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=988, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- executing program [pid 993] <... close resumed>) = 0 [pid 991] <... ioctl resumed>) = 0 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 993] write(1, "executing program\n", 18 [pid 303] <... restart_syscall resumed>) = 0 [pid 993] <... write resumed>) = 18 [pid 993] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 993] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 303] <... openat resumed>) = 3 [pid 993] <... rt_sigaction resumed>NULL, 8) = 0 [pid 303] ioctl(3, LOOP_CLR_FD [pid 993] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 303] <... ioctl resumed>) = 0 [pid 993] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 991] ioctl(7, LOOP_SET_FD, 6 [pid 303] close(3 [pid 993] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 991] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] <... close resumed>) = 0 [pid 993] <... mmap resumed>) = 0x7fe6f87b1000 [pid 991] close(7 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 993] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 991] <... close resumed>) = 0 [pid 993] <... mprotect resumed>) = 0 [pid 991] close(6 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 996 [pid 993] rt_sigprocmask(SIG_BLOCK, ~[], [pid 991] <... close resumed>) = 0 [pid 993] <... rt_sigprocmask resumed>[], 8) = 0 [pid 991] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 993] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 991] <... futex resumed>) = 1 [pid 989] <... futex resumed>) = 0 [pid 991] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 989] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 993] <... clone3 resumed> => {parent_tid=[997]}, 88) = 997 [pid 991] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 989] <... futex resumed>) = 0 [pid 993] rt_sigprocmask(SIG_SETMASK, [], [pid 991] mknod(0x20000000, 000 [pid 989] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 993] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 991] <... mknod resumed>) = -1 EEXIST (File exists) [pid 993] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 991] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 993] <... futex resumed>) = 0 [pid 991] <... futex resumed>) = 1 [pid 989] <... futex resumed>) = 0 [pid 993] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 991] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 989] exit_group(0 [pid 994] <... close resumed>) = 0 [pid 991] <... futex resumed>) = ? [pid 989] <... exit_group resumed>) = ? [pid 991] +++ exited with 0 +++ [pid 989] +++ exited with 0 +++ [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=989, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 302] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 997 attached [pid 997] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 997] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 997] memfd_create("syzkaller", 0) = 3 ./strace-static-x86_64: Process 996 attached [pid 997] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 996] set_robust_list(0x5555636e06a0, 24executing program ./strace-static-x86_64: Process 995 attached [pid 994] write(1, "executing program\n", 18 [pid 995] set_robust_list(0x7fe6f87d19a0, 24 [pid 994] <... write resumed>) = 18 [pid 995] <... set_robust_list resumed>) = 0 [pid 994] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 995] rt_sigprocmask(SIG_SETMASK, [], [pid 994] <... futex resumed>) = 0 [pid 995] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 994] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 995] memfd_create("syzkaller", 0 [pid 994] <... rt_sigaction resumed>NULL, 8) = 0 [pid 995] <... memfd_create resumed>) = 3 [pid 994] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 995] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 994] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 995] <... mmap resumed>) = 0x7fe6f03b1000 [pid 994] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 996] <... set_robust_list resumed>) = 0 [pid 996] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 996] setpgid(0, 0) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 302] ioctl(3, LOOP_CLR_FD) = 0 [pid 302] close(3) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 995] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 994] <... mmap resumed>) = 0x7fe6f87b1000 [pid 994] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 998 [pid 994] <... mprotect resumed>) = 0 [pid 994] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 994] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 996] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 994] <... clone3 resumed> => {parent_tid=[999]}, 88) = 999 [pid 994] rt_sigprocmask(SIG_SETMASK, [], [pid 995] <... write resumed>) = 262144 [pid 994] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 995] munmap(0x7fe6f03b1000, 138412032 [pid 996] <... openat resumed>) = 3 [pid 994] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 996] write(3, "1000", 4 [pid 995] <... munmap resumed>) = 0 [pid 994] <... futex resumed>) = 0 [pid 996] <... write resumed>) = 4 [pid 995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 994] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 996] close(3 [pid 995] <... openat resumed>) = 4 executing program [pid 996] <... close resumed>) = 0 [pid 995] ioctl(4, LOOP_SET_FD, 3 [pid 996] write(1, "executing program\n", 18) = 18 [pid 996] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 996] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 996] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 996] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 996] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 996] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 996] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[1000]}, 88) = 1000 [pid 997] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 996] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 996] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 997] <... write resumed>) = 262144 [pid 996] <... futex resumed>) = 0 [pid 996] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 997] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 995] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 995] ioctl(4, LOOP_CLR_FD) = 0 [pid 997] <... openat resumed>) = 4 [pid 997] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 997] ioctl(4, LOOP_CLR_FD [pid 995] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 995] close(4) = 0 [pid 997] <... ioctl resumed>) = 0 [pid 995] close(3./strace-static-x86_64: Process 999 attached [pid 999] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 999] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 999] memfd_create("syzkaller", 0 [pid 995] <... close resumed>) = 0 [pid 999] <... memfd_create resumed>) = 3 [pid 999] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 997] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 997] close(4) = 0 [pid 997] close(3) = 0 [pid 997] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 995] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 998 attached [pid 997] <... futex resumed>) = 1 [pid 995] <... futex resumed>) = 1 [pid 993] <... futex resumed>) = 0 [pid 992] <... futex resumed>) = 0 [pid 998] set_robust_list(0x5555636e06a0, 24 [pid 997] chdir("./file0" [pid 995] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 993] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 998] <... set_robust_list resumed>) = 0 [pid 997] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 995] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 993] <... futex resumed>) = 0 [pid 992] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 998] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 997] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 995] chdir("./file0" [pid 993] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 992] <... futex resumed>) = 0 [pid 998] <... prctl resumed>) = 0 [pid 997] <... futex resumed>) = 0 [pid 995] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 993] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 992] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1000 attached [pid 998] setpgid(0, 0 [pid 997] creat("./bus", 000 [pid 995] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 993] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 992] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1000] set_robust_list(0x7fe6f87d19a0, 24 [pid 998] <... setpgid resumed>) = 0 [pid 997] <... creat resumed>) = 3 [pid 995] <... futex resumed>) = 0 [pid 993] <... futex resumed>) = 0 [pid 992] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1000] <... set_robust_list resumed>) = 0 [pid 999] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 998] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 997] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 995] creat("./bus", 000 [pid 993] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 992] <... futex resumed>) = 0 [pid 1000] rt_sigprocmask(SIG_SETMASK, [], [pid 998] <... openat resumed>) = 3 [pid 997] <... futex resumed>) = 0 [pid 995] <... creat resumed>) = 3 [pid 993] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 992] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1000] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 999] <... write resumed>) = 262144 [pid 998] write(3, "1000", 4 [pid 997] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 995] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 993] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 992] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1000] memfd_create("syzkaller", 0 [pid 998] <... write resumed>) = 4 [pid 997] <... openat resumed>) = 4 [pid 995] <... futex resumed>) = 0 [pid 993] <... futex resumed>) = 0 [pid 992] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1000] <... memfd_create resumed>) = 3 [pid 998] close(3 [pid 997] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 995] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 993] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 992] <... futex resumed>) = 0 [pid 1000] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 999] munmap(0x7fe6f03b1000, 138412032 [pid 998] <... close resumed>) = 0 [pid 997] <... futex resumed>) = 0 [pid 995] <... openat resumed>) = 4 [pid 993] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 992] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}executing program [pid 1000] <... mmap resumed>) = 0x7fe6f03b1000 [pid 999] <... munmap resumed>) = 0 [pid 998] write(1, "executing program\n", 18 [pid 997] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 995] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 993] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 992] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1000] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 999] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 998] <... write resumed>) = 18 [pid 997] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 995] <... futex resumed>) = 0 [pid 993] <... futex resumed>) = 0 [pid 992] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1000] <... write resumed>) = 262144 [pid 999] <... openat resumed>) = 4 [pid 998] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 997] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 995] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 993] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 992] <... futex resumed>) = 0 [pid 1000] munmap(0x7fe6f03b1000, 138412032 [pid 999] ioctl(4, LOOP_SET_FD, 3 [pid 998] <... futex resumed>) = 0 [pid 997] <... futex resumed>) = 0 [pid 993] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 992] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1000] <... munmap resumed>) = 0 [pid 999] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 998] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 997] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 993] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1000] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 999] ioctl(4, LOOP_CLR_FD [pid 998] <... rt_sigaction resumed>NULL, 8) = 0 [pid 997] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 993] <... futex resumed>) = 0 [pid 1000] <... openat resumed>) = 4 [pid 999] <... ioctl resumed>) = 0 [pid 998] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 997] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 993] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1000] ioctl(4, LOOP_SET_FD, 3 [pid 998] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 997] <... open resumed>) = 5 [pid 1000] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 998] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 997] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1000] ioctl(4, LOOP_CLR_FD [pid 998] <... mmap resumed>) = 0x7fe6f87b1000 [pid 997] <... futex resumed>) = 1 [pid 993] <... futex resumed>) = 0 [pid 1000] <... ioctl resumed>) = 0 [pid 998] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 997] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 993] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 998] <... mprotect resumed>) = 0 [pid 997] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 993] <... futex resumed>) = 0 [pid 998] rt_sigprocmask(SIG_BLOCK, ~[], [pid 997] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 995] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 993] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 999] ioctl(4, LOOP_SET_FD, 3 [pid 998] <... rt_sigprocmask resumed>[], 8) = 0 [pid 997] <... mmap resumed>) = 0x20000000 [pid 995] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 999] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 998] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 997] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 995] <... futex resumed>) = 1 [pid 992] <... futex resumed>) = 0 [pid 1000] ioctl(4, LOOP_SET_FD, 3 [pid 999] close(4 [pid 997] <... futex resumed>) = 1 [pid 995] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 993] <... futex resumed>) = 0 [pid 992] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1000] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 999] <... close resumed>) = 0 [pid 998] <... clone3 resumed> => {parent_tid=[1001]}, 88) = 1001 [pid 997] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 995] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 993] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 992] <... futex resumed>) = 0 [pid 1000] close(4 [pid 999] close(3 [pid 998] rt_sigprocmask(SIG_SETMASK, [], [pid 997] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 995] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 993] <... futex resumed>) = 0 [pid 992] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1000] <... close resumed>) = 0 [pid 999] <... close resumed>) = 0 [pid 998] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 997] memfd_create("syzkaller", 0 [pid 995] <... open resumed>) = 5 [pid 993] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1000] close(3 [pid 999] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 998] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 997] <... memfd_create resumed>) = 6 [pid 995] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1000] <... close resumed>) = 0 [pid 999] <... futex resumed>) = 1 [pid 998] <... futex resumed>) = 0 [pid 997] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 994] <... futex resumed>) = 0 [pid 1000] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 999] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 998] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 997] <... mmap resumed>) = 0x7fe6f03b1000 [pid 995] <... futex resumed>) = 1 [pid 994] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 992] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1001 attached [pid 1000] <... futex resumed>) = 1 [pid 999] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 997] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 996] <... futex resumed>) = 0 [pid 995] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 994] <... futex resumed>) = 0 [pid 992] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1001] set_robust_list(0x7fe6f87d19a0, 24 [pid 1000] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 999] chdir("./file0" [pid 997] <... write resumed>) = 131072 [pid 996] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 995] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 994] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 992] <... futex resumed>) = 0 [pid 1001] <... set_robust_list resumed>) = 0 [pid 1000] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 999] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 997] munmap(0x7fe6f03b1000, 138412032 [pid 996] <... futex resumed>) = 0 [pid 995] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 992] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1001] rt_sigprocmask(SIG_SETMASK, [], [pid 1000] chdir("./file0" [pid 999] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 997] <... munmap resumed>) = 0 [pid 996] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 995] <... mmap resumed>) = 0x20000000 [pid 1001] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1000] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 999] <... futex resumed>) = 1 [pid 997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 995] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 994] <... futex resumed>) = 0 [pid 1001] memfd_create("syzkaller", 0 [pid 1000] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 999] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 997] <... openat resumed>) = 7 [pid 995] <... futex resumed>) = 1 [pid 994] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 992] <... futex resumed>) = 0 [pid 1001] <... memfd_create resumed>) = 3 [pid 1000] <... futex resumed>) = 1 [pid 999] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 997] ioctl(7, LOOP_SET_FD, 6 [pid 996] <... futex resumed>) = 0 [pid 995] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 994] <... futex resumed>) = 0 [pid 992] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1001] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1000] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 999] creat("./bus", 000 [pid 997] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 996] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 995] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 994] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 992] <... futex resumed>) = 0 [pid 1001] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1000] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 999] <... creat resumed>) = 3 [pid 997] ioctl(7, LOOP_CLR_FD [pid 996] <... futex resumed>) = 0 [pid 995] memfd_create("syzkaller", 0 [pid 1000] creat("./bus", 000 [pid 999] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 997] <... ioctl resumed>) = 0 [pid 996] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 992] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1000] <... creat resumed>) = 3 [pid 999] <... futex resumed>) = 1 [pid 994] <... futex resumed>) = 0 [pid 1000] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 999] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 995] <... memfd_create resumed>) = 6 [pid 994] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1000] <... futex resumed>) = 1 [pid 999] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 996] <... futex resumed>) = 0 [pid 995] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 994] <... futex resumed>) = 0 [pid 1000] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 999] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 996] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 995] <... mmap resumed>) = 0x7fe6f03b1000 [pid 994] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1001] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1000] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 999] <... openat resumed>) = 4 [pid 996] <... futex resumed>) = 0 [pid 1000] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 999] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 997] ioctl(7, LOOP_SET_FD, 6 [pid 996] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1000] <... openat resumed>) = 4 [pid 999] <... futex resumed>) = 1 [pid 997] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 994] <... futex resumed>) = 0 [pid 1000] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 999] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 997] close(7 [pid 994] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1000] <... futex resumed>) = 1 [pid 999] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 997] <... close resumed>) = 0 [pid 996] <... futex resumed>) = 0 [pid 995] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 994] <... futex resumed>) = 0 [pid 1000] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 999] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 997] close(6 [pid 996] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 994] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1000] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 999] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 997] <... close resumed>) = 0 [pid 996] <... futex resumed>) = 0 [pid 1000] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 999] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 997] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 996] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1000] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 999] <... futex resumed>) = 1 [pid 997] <... futex resumed>) = 1 [pid 994] <... futex resumed>) = 0 [pid 993] <... futex resumed>) = 0 [pid 1000] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 999] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 997] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 994] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 993] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1000] <... futex resumed>) = 1 [pid 999] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 997] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 996] <... futex resumed>) = 0 [pid 994] <... futex resumed>) = 0 [pid 993] <... futex resumed>) = 0 [pid 1000] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 999] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 997] mknod(0x20000000, 000 [pid 996] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 995] <... write resumed>) = 131072 [pid 994] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 993] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1000] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 999] <... open resumed>) = 5 [pid 997] <... mknod resumed>) = -1 EEXIST (File exists) [pid 996] <... futex resumed>) = 0 [pid 1000] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 999] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 997] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 996] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1000] <... open resumed>) = 5 [pid 999] <... futex resumed>) = 1 [pid 997] <... futex resumed>) = 1 [pid 995] munmap(0x7fe6f03b1000, 138412032 [pid 994] <... futex resumed>) = 0 [pid 993] <... futex resumed>) = 0 [pid 1000] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 999] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 997] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 994] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 993] exit_group(0 [pid 1001] <... write resumed>) = 262144 [pid 1000] <... futex resumed>) = 1 [pid 999] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 997] <... futex resumed>) = ? [pid 996] <... futex resumed>) = 0 [pid 995] <... munmap resumed>) = 0 [pid 994] <... futex resumed>) = 0 [pid 993] <... exit_group resumed>) = ? [pid 1001] munmap(0x7fe6f03b1000, 138412032 [pid 1000] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 999] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 997] +++ exited with 0 +++ [pid 996] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 994] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 993] +++ exited with 0 +++ [pid 1000] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 999] <... mmap resumed>) = 0x20000000 [pid 996] <... futex resumed>) = 0 [pid 1001] <... munmap resumed>) = 0 [pid 995] <... openat resumed>) = 7 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=993, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1001] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1000] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 999] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 996] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 995] ioctl(7, LOOP_SET_FD, 6 [pid 1000] <... mmap resumed>) = 0x20000000 [pid 999] <... futex resumed>) = 1 [pid 995] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 994] <... futex resumed>) = 0 [pid 1001] <... openat resumed>) = 4 [pid 1000] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 999] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 995] ioctl(7, LOOP_CLR_FD [pid 994] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1001] ioctl(4, LOOP_SET_FD, 3 [pid 1000] <... futex resumed>) = 1 [pid 999] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 996] <... futex resumed>) = 0 [pid 995] <... ioctl resumed>) = 0 [pid 994] <... futex resumed>) = 0 [pid 1001] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1000] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 999] memfd_create("syzkaller", 0 [pid 996] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 994] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1001] ioctl(4, LOOP_CLR_FD [pid 1000] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 999] <... memfd_create resumed>) = 6 [pid 996] <... futex resumed>) = 0 [pid 1000] memfd_create("syzkaller", 0 [pid 999] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 996] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1001] <... ioctl resumed>) = 0 [pid 1000] <... memfd_create resumed>) = 6 [pid 999] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1000] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 999] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 995] ioctl(7, LOOP_SET_FD, 6 [pid 1000] <... mmap resumed>) = 0x7fe6f03b1000 [pid 999] <... write resumed>) = 131072 [pid 1000] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 999] munmap(0x7fe6f03b1000, 138412032 [pid 995] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1001] ioctl(4, LOOP_SET_FD, 3 [pid 1000] <... write resumed>) = 131072 [pid 999] <... munmap resumed>) = 0 [pid 995] close(7 [pid 1001] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1000] munmap(0x7fe6f03b1000, 138412032 [pid 999] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1001] close(4 [pid 1000] <... munmap resumed>) = 0 [pid 999] <... openat resumed>) = 7 [pid 995] <... close resumed>) = 0 [pid 1001] <... close resumed>) = 0 [pid 1000] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 999] ioctl(7, LOOP_SET_FD, 6 [pid 995] close(6 [pid 1001] close(3 [pid 1000] <... openat resumed>) = 7 [pid 999] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1000] ioctl(7, LOOP_SET_FD, 6 [pid 999] ioctl(7, LOOP_CLR_FD [pid 1000] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 999] <... ioctl resumed>) = 0 [pid 1000] ioctl(7, LOOP_CLR_FD [pid 995] <... close resumed>) = 0 [pid 1000] <... ioctl resumed>) = 0 [pid 1001] <... close resumed>) = 0 [pid 995] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1001] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 999] ioctl(7, LOOP_SET_FD, 6 [pid 1001] <... futex resumed>) = 1 [pid 1000] ioctl(7, LOOP_SET_FD, 6 [pid 999] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 998] <... futex resumed>) = 0 [pid 995] <... futex resumed>) = 1 [pid 992] <... futex resumed>) = 0 [pid 1001] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1000] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 999] close(7 [pid 998] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 995] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 992] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1001] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1000] close(7 [pid 999] <... close resumed>) = 0 [pid 1000] <... close resumed>) = 0 [pid 999] close(6 [pid 1000] close(6 [pid 999] <... close resumed>) = 0 [pid 1000] <... close resumed>) = 0 [pid 999] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1000] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 999] <... futex resumed>) = 1 [pid 998] <... futex resumed>) = 0 [pid 995] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 994] <... futex resumed>) = 0 [pid 992] <... futex resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 1001] chdir("./file0" [pid 1000] <... futex resumed>) = 1 [pid 999] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 998] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 996] <... futex resumed>) = 0 [pid 995] mknod(0x20000000, 000 [pid 994] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 992] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] ioctl(3, LOOP_CLR_FD [pid 1001] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1000] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 999] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 996] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 995] <... mknod resumed>) = -1 EEXIST (File exists) [pid 994] <... futex resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 1001] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1000] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 999] mknod(0x20000000, 000 [pid 996] <... futex resumed>) = 0 [pid 995] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 994] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] close(3 [pid 1001] <... futex resumed>) = 1 [pid 1000] mknod(0x20000000, 000 [pid 999] <... mknod resumed>) = -1 EEXIST (File exists) [pid 998] <... futex resumed>) = 0 [pid 996] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 995] <... futex resumed>) = 1 [pid 992] <... futex resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 1001] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1000] <... mknod resumed>) = -1 EEXIST (File exists) [pid 999] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 998] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 995] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 992] exit_group(0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1001] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1000] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 999] <... futex resumed>) = 1 [pid 998] <... futex resumed>) = 0 [pid 995] <... futex resumed>) = ? [pid 994] <... futex resumed>) = 0 [pid 992] <... exit_group resumed>) = ? [pid 1001] creat("./bus", 000 [pid 1000] <... futex resumed>) = 1 [pid 999] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 998] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 996] <... futex resumed>) = 0 [pid 995] +++ exited with 0 +++ [pid 994] exit_group(0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1002 [pid 1000] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 999] <... futex resumed>) = ? [pid 996] exit_group(0 [pid 994] <... exit_group resumed>) = ? [pid 1001] <... creat resumed>) = 3 [pid 1000] <... futex resumed>) = ? [pid 999] +++ exited with 0 +++ [pid 996] <... exit_group resumed>) = ? [pid 994] +++ exited with 0 +++ [pid 992] +++ exited with 0 +++ [pid 1001] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1000] +++ exited with 0 +++ [pid 996] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=994, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=992, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1001] <... futex resumed>) = 1 [pid 998] <... futex resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=996, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1001] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 998] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1001] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 998] <... futex resumed>) = 0 [pid 1001] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 998] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1001] <... openat resumed>) = 4 [pid 1001] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1001] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 998] <... futex resumed>) = 0 [pid 998] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1001] <... futex resumed>) = 0 [pid 998] <... futex resumed>) = 1 [pid 1001] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 998] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1002 attached [pid 1001] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1001] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 998] <... futex resumed>) = 0 [pid 1001] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 998] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1001] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1001] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 998] <... futex resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 1001] <... open resumed>) = 5 [pid 998] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1001] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 998] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1001] <... futex resumed>) = 0 [pid 998] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1001] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 998] <... futex resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 304] <... openat resumed>) = 3 [pid 1001] <... mmap resumed>) = 0x20000000 [pid 998] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] ioctl(3, LOOP_CLR_FD [pid 304] ioctl(3, LOOP_CLR_FD [pid 303] <... restart_syscall resumed>) = 0 [pid 1001] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 998] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 305] <... ioctl resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 1001] <... futex resumed>) = 0 [pid 998] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] close(3 [pid 304] close(3 [pid 1001] memfd_create("syzkaller", 0 [pid 998] <... futex resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1001] <... memfd_create resumed>) = 6 [pid 998] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] <... openat resumed>) = 3 [pid 1002] set_robust_list(0x5555636e06a0, 24 [pid 1001] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 303] ioctl(3, LOOP_CLR_FD [pid 1002] <... set_robust_list resumed>) = 0 [pid 1001] <... mmap resumed>) = 0x7fe6f03b1000 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1003 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1004 [pid 303] <... ioctl resumed>) = 0 [pid 1002] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 303] close(3 [pid 1002] <... prctl resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 1002] setpgid(0, 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1002] <... setpgid resumed>) = 0 [pid 1001] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1002] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1005 [pid 1002] <... openat resumed>) = 3 [pid 1001] <... write resumed>) = 131072 [pid 1002] write(3, "1000", 4 [pid 1001] munmap(0x7fe6f03b1000, 138412032 [pid 1002] <... write resumed>) = 4 [pid 1002] close(3 [pid 1001] <... munmap resumed>) = 0 executing program [pid 1002] <... close resumed>) = 0 [pid 1001] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1002] write(1, "executing program\n", 18 [pid 1001] <... openat resumed>) = 7 [pid 1002] <... write resumed>) = 18 [pid 1001] ioctl(7, LOOP_SET_FD, 6 [pid 1002] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1001] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1002] <... futex resumed>) = 0 [pid 1001] ioctl(7, LOOP_CLR_FD [pid 1002] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1001] <... ioctl resumed>) = 0 [pid 1002] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1002] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1002] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1002] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1002] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1002] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[1006]}, 88) = 1006 [pid 1001] ioctl(7, LOOP_SET_FD, 6 [pid 1002] rt_sigprocmask(SIG_SETMASK, [], [pid 1001] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1002] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1001] close(7 [pid 1002] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1001] <... close resumed>) = 0 [pid 1002] <... futex resumed>) = 0 [pid 1001] close(6 [pid 1002] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1005 attached [pid 1005] set_robust_list(0x5555636e06a0, 24 [pid 1001] <... close resumed>) = 0 [pid 1001] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1005] <... set_robust_list resumed>) = 0 [pid 1001] <... futex resumed>) = 1 [pid 998] <... futex resumed>) = 0 [pid 1001] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 998] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1001] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 998] <... futex resumed>) = 0 [pid 1001] mknod(0x20000000, 000 [pid 998] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1001] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1005] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1001] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 998] <... futex resumed>) = 0 [pid 1001] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 998] exit_group(0 [pid 1005] <... prctl resumed>) = 0 [pid 1001] <... futex resumed>) = ? [pid 998] <... exit_group resumed>) = ? [pid 1005] setpgid(0, 0 [pid 1001] +++ exited with 0 +++ [pid 1005] <... setpgid resumed>) = 0 [pid 1005] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1005] write(3, "1000", 4 [pid 998] +++ exited with 0 +++ [pid 1005] <... write resumed>) = 4 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=998, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1005] close(3 [pid 302] restart_syscall(<... resuming interrupted clone ...>executing program ./strace-static-x86_64: Process 1004 attached [pid 1005] <... close resumed>) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 1005] write(1, "executing program\n", 18 [pid 1004] set_robust_list(0x5555636e06a0, 24 [pid 1005] <... write resumed>) = 18 [pid 1004] <... set_robust_list resumed>) = 0 [pid 1005] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1004] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1005] <... futex resumed>) = 0 [pid 1004] <... prctl resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 1005] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1004] setpgid(0, 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 1005] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1004] <... setpgid resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 1005] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1004] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 302] close(3 [pid 1005] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1004] <... openat resumed>) = 3 [pid 302] <... close resumed>) = 0 [pid 1005] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1004] write(3, "1000", 4 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1005] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1004] <... write resumed>) = 4 [pid 1005] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1004] close(3 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1007 [pid 1005] <... mprotect resumed>) = 0 [pid 1004] <... close resumed>) = 0 executing program [pid 1005] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1004] write(1, "executing program\n", 18 [pid 1005] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1004] <... write resumed>) = 18 [pid 1005] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1004] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1005] <... clone3 resumed> => {parent_tid=[1008]}, 88) = 1008 [pid 1004] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, ./strace-static-x86_64: Process 1007 attached ./strace-static-x86_64: Process 1006 attached ./strace-static-x86_64: Process 1003 attached [pid 1005] rt_sigprocmask(SIG_SETMASK, [], [pid 1004] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1007] set_robust_list(0x5555636e06a0, 24 [pid 1006] set_robust_list(0x7fe6f87d19a0, 24 [pid 1005] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1004] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1003] set_robust_list(0x5555636e06a0, 24 [pid 1007] <... set_robust_list resumed>) = 0 [pid 1006] <... set_robust_list resumed>) = 0 [pid 1005] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1004] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1003] <... set_robust_list resumed>) = 0 [pid 1007] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1006] rt_sigprocmask(SIG_SETMASK, [], [pid 1005] <... futex resumed>) = 0 [pid 1004] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1003] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1007] <... prctl resumed>) = 0 [pid 1006] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1005] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1004] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1003] <... prctl resumed>) = 0 [pid 1007] setpgid(0, 0) = 0 [pid 1006] memfd_create("syzkaller", 0 [pid 1004] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1003] setpgid(0, 0 [pid 1007] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1006] <... memfd_create resumed>) = 3 [pid 1004] <... mprotect resumed>) = 0 [pid 1003] <... setpgid resumed>) = 0 [pid 1007] <... openat resumed>) = 3 [pid 1006] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1004] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1003] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1007] write(3, "1000", 4 [pid 1006] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1004] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1003] <... openat resumed>) = 3 [pid 1004] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[1009]}, 88) = 1009 [pid 1004] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1004] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1004] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1008 attached [pid 1008] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1008] rt_sigprocmask(SIG_SETMASK, [], [pid 1006] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1007] <... write resumed>) = 4 [pid 1003] write(3, "1000", 4 [pid 1008] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1008] memfd_create("syzkaller", 0) = 3 [pid 1008] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1007] close(3 [pid 1006] <... write resumed>) = 262144 [pid 1003] <... write resumed>) = 4 [pid 1007] <... close resumed>) = 0 [pid 1006] munmap(0x7fe6f03b1000, 138412032 [pid 1003] close(3 [pid 1007] write(1, "executing program\n", 18 [pid 1003] <... close resumed>) = 0 executing program [pid 1007] <... write resumed>) = 18 [pid 1006] <... munmap resumed>) = 0 [pid 1003] write(1, "executing program\n", 18executing program [pid 1007] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1006] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1003] <... write resumed>) = 18 [pid 1007] <... futex resumed>) = 0 [pid 1006] <... openat resumed>) = 4 [pid 1003] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1007] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1006] ioctl(4, LOOP_SET_FD, 3 [pid 1003] <... futex resumed>) = 0 [pid 1007] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1006] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1003] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1007] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1006] ioctl(4, LOOP_CLR_FD [pid 1003] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1008] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 1008] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1008] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 1008] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1007] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1003] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1007] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1006] <... ioctl resumed>) = 0 [pid 1003] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1007] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1003] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1007] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1003] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1007] <... mprotect resumed>) = 0 [pid 1003] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1007] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1003] <... mprotect resumed>) = 0 [pid 1007] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1003] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1008] ioctl(4, LOOP_CLR_FD) = 0 [pid 1007] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1003] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1003] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1007] <... clone3 resumed> => {parent_tid=[1010]}, 88) = 1010 ./strace-static-x86_64: Process 1010 attached [pid 1007] rt_sigprocmask(SIG_SETMASK, [], [pid 1006] ioctl(4, LOOP_SET_FD, 3 [pid 1007] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1006] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1007] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1006] close(4 [pid 1003] <... clone3 resumed> => {parent_tid=[1011]}, 88) = 1011 [pid 1007] <... futex resumed>) = 0 [pid 1006] <... close resumed>) = 0 [pid 1003] rt_sigprocmask(SIG_SETMASK, [], [pid 1007] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1006] close(3 [pid 1003] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1010] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1010] rt_sigprocmask(SIG_SETMASK, [], [pid 1008] ioctl(4, LOOP_SET_FD, 3 [pid 1006] <... close resumed>) = 0 [pid 1003] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1006] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1003] <... futex resumed>) = 0 [pid 1006] <... futex resumed>) = 1 [pid 1002] <... futex resumed>) = 0 [pid 1006] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1003] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1002] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1006] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1002] <... futex resumed>) = 0 [pid 1006] chdir("./file0" [pid 1002] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1006] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1006] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1008] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1008] close(4 [pid 1006] <... futex resumed>) = 1 [pid 1002] <... futex resumed>) = 0 [pid 1008] <... close resumed>) = 0 [pid 1006] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1002] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1008] close(3 [pid 1006] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1002] <... futex resumed>) = 0 [pid 1008] <... close resumed>) = 0 [pid 1006] creat("./bus", 000 [pid 1002] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1006] <... creat resumed>) = 3 [pid 1006] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1002] <... futex resumed>) = 0 [pid 1006] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1002] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1008] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1006] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1002] <... futex resumed>) = 0 [pid 1008] <... futex resumed>) = 1 [pid 1006] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1005] <... futex resumed>) = 0 [pid 1002] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1008] chdir("./file0" [pid 1005] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1008] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1006] <... openat resumed>) = 4 [pid 1005] <... futex resumed>) = 0 [pid 1008] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1006] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1005] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1008] <... futex resumed>) = 0 [pid 1006] <... futex resumed>) = 1 [pid 1005] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1002] <... futex resumed>) = 0 [pid 1008] creat("./bus", 000 [pid 1006] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1005] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1002] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1008] <... creat resumed>) = 3 [pid 1006] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1005] <... futex resumed>) = 0 [pid 1002] <... futex resumed>) = 0 [pid 1008] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1006] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1005] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1002] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1011 attached ./strace-static-x86_64: Process 1009 attached [pid 1008] <... futex resumed>) = 0 [pid 1006] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1005] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1011] set_robust_list(0x7fe6f87d19a0, 24 [pid 1009] set_robust_list(0x7fe6f87d19a0, 24 [pid 1008] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1006] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1005] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1008] <... openat resumed>) = 4 [pid 1006] <... futex resumed>) = 1 [pid 1005] <... futex resumed>) = 0 [pid 1002] <... futex resumed>) = 0 [pid 1008] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1006] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1005] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1002] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1009] <... set_robust_list resumed>) = 0 [pid 1008] <... futex resumed>) = 0 [pid 1006] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1005] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1002] <... futex resumed>) = 0 [pid 1011] <... set_robust_list resumed>) = 0 [pid 1009] rt_sigprocmask(SIG_SETMASK, [], [pid 1008] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1006] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1005] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1002] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1011] rt_sigprocmask(SIG_SETMASK, [], [pid 1010] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1009] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1006] <... open resumed>) = 5 [pid 1005] <... futex resumed>) = 0 [pid 1011] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1010] memfd_create("syzkaller", 0 [pid 1009] memfd_create("syzkaller", 0 [pid 1006] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1005] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1011] memfd_create("syzkaller", 0 [pid 1010] <... memfd_create resumed>) = 3 [pid 1009] <... memfd_create resumed>) = 3 [pid 1006] <... futex resumed>) = 1 [pid 1002] <... futex resumed>) = 0 [pid 1011] <... memfd_create resumed>) = 3 [pid 1010] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1009] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1006] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1002] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1011] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1010] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1009] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1006] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1002] <... futex resumed>) = 0 [pid 1011] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1010] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1009] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1006] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1002] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1006] <... mmap resumed>) = 0x20000000 [pid 1006] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1002] <... futex resumed>) = 0 [pid 1006] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1002] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1006] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1002] <... futex resumed>) = 0 [pid 1006] memfd_create("syzkaller", 0 [pid 1002] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1006] <... memfd_create resumed>) = 6 [pid 1006] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1010] <... write resumed>) = 262144 [pid 1010] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1006] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1010] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 1010] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1006] <... write resumed>) = 131072 [pid 1006] munmap(0x7fe6f03b1000, 138412032 [pid 1010] ioctl(4, LOOP_CLR_FD) = 0 [pid 1006] <... munmap resumed>) = 0 [pid 1006] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 7 [pid 1006] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1006] ioctl(7, LOOP_CLR_FD) = 0 [pid 1008] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1008] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1005] <... futex resumed>) = 0 [pid 1008] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1005] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1008] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1005] <... futex resumed>) = 0 [pid 1008] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1005] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1011] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1008] <... open resumed>) = 5 [pid 1008] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1010] ioctl(4, LOOP_SET_FD, 3 [pid 1009] <... write resumed>) = 262144 [pid 1008] <... futex resumed>) = 1 [pid 1005] <... futex resumed>) = 0 [pid 1011] <... write resumed>) = 262144 [pid 1010] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1009] munmap(0x7fe6f03b1000, 138412032 [pid 1008] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1006] ioctl(7, LOOP_SET_FD, 6 [pid 1011] munmap(0x7fe6f03b1000, 138412032 [pid 1009] <... munmap resumed>) = 0 [pid 1006] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1011] <... munmap resumed>) = 0 [pid 1009] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1006] close(7 [pid 1011] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1009] <... openat resumed>) = 4 [pid 1006] <... close resumed>) = 0 [pid 1011] <... openat resumed>) = 4 [pid 1009] ioctl(4, LOOP_SET_FD, 3 [pid 1006] close(6 [pid 1011] ioctl(4, LOOP_SET_FD, 3 [pid 1009] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1006] <... close resumed>) = 0 [pid 1011] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1009] ioctl(4, LOOP_CLR_FD [pid 1006] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1011] ioctl(4, LOOP_CLR_FD [pid 1009] <... ioctl resumed>) = 0 [pid 1006] <... futex resumed>) = 1 [pid 1005] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1002] <... futex resumed>) = 0 [pid 1011] <... ioctl resumed>) = 0 [pid 1008] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1006] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1005] <... futex resumed>) = 0 [pid 1002] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1008] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1006] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1005] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1002] <... futex resumed>) = 0 [pid 1006] mknod(0x20000000, 000) = -1 EEXIST (File exists) [pid 1006] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1006] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1008] <... mmap resumed>) = 0x20000000 [pid 1002] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1008] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1002] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1008] <... futex resumed>) = 1 [pid 1005] <... futex resumed>) = 0 [pid 1002] exit_group(0 [pid 1005] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1008] memfd_create("syzkaller", 0 [pid 1006] <... futex resumed>) = ? [pid 1005] <... futex resumed>) = 0 [pid 1002] <... exit_group resumed>) = ? [pid 1009] ioctl(4, LOOP_SET_FD, 3 [pid 1006] +++ exited with 0 +++ [pid 1005] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1008] <... memfd_create resumed>) = 6 [pid 1011] ioctl(4, LOOP_SET_FD, 3 [pid 1009] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1011] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1009] close(4 [pid 1011] close(4 [pid 1009] <... close resumed>) = 0 [pid 1011] <... close resumed>) = 0 [pid 1010] close(4 [pid 1009] close(3 [pid 1008] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1002] +++ exited with 0 +++ [pid 1011] close(3 [pid 1009] <... close resumed>) = 0 [pid 1008] <... mmap resumed>) = 0x7fe6f03b1000 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1002, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1011] <... close resumed>) = 0 [pid 1009] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1011] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1009] <... futex resumed>) = 1 [pid 1004] <... futex resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 1004] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1011] <... futex resumed>) = 1 [pid 1009] chdir("./file0" [pid 1004] <... futex resumed>) = 0 [pid 1003] <... futex resumed>) = 0 [pid 1011] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1009] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1008] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1004] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1003] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1011] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1009] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1004] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1003] <... futex resumed>) = 0 [pid 1011] chdir("./file0" [pid 1009] <... futex resumed>) = 0 [pid 1008] <... write resumed>) = 131072 [pid 1004] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1003] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1011] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1010] <... close resumed>) = 0 [pid 1009] creat("./bus", 000 [pid 1008] munmap(0x7fe6f03b1000, 138412032 [pid 1004] <... futex resumed>) = 0 [pid 1011] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1009] <... creat resumed>) = 3 [pid 1011] <... futex resumed>) = 1 [pid 1010] close(3 [pid 1009] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1008] <... munmap resumed>) = 0 [pid 1004] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1003] <... futex resumed>) = 0 [pid 1011] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1009] <... futex resumed>) = 0 [pid 1008] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1004] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1003] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1011] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1010] <... close resumed>) = 0 [pid 1009] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1008] <... openat resumed>) = 7 [pid 1004] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1003] <... futex resumed>) = 0 [pid 1011] creat("./bus", 000 [pid 1010] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1009] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1008] ioctl(7, LOOP_SET_FD, 6 [pid 1004] <... futex resumed>) = 0 [pid 1003] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1011] <... creat resumed>) = 3 [pid 1010] <... futex resumed>) = 1 [pid 1009] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1008] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1007] <... futex resumed>) = 0 [pid 1004] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1011] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1010] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1009] <... openat resumed>) = 4 [pid 1008] ioctl(7, LOOP_CLR_FD [pid 1007] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1011] <... futex resumed>) = 1 [pid 1010] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1009] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1008] <... ioctl resumed>) = 0 [pid 1007] <... futex resumed>) = 0 [pid 1003] <... futex resumed>) = 0 [pid 1011] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1010] chdir("./file0" [pid 1009] <... futex resumed>) = 1 [pid 1007] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1004] <... futex resumed>) = 0 [pid 1003] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1011] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1010] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1009] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1004] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1003] <... futex resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 1011] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1010] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1009] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1004] <... futex resumed>) = 0 [pid 1003] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1011] <... openat resumed>) = 4 [pid 1010] <... futex resumed>) = 1 [pid 1009] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1007] <... futex resumed>) = 0 [pid 1004] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1011] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1010] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1009] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1008] ioctl(7, LOOP_SET_FD, 6 [pid 1007] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1011] <... futex resumed>) = 1 [pid 1010] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1009] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1008] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1007] <... futex resumed>) = 0 [pid 1003] <... futex resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1011] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1010] creat("./bus", 000 [pid 1009] <... futex resumed>) = 1 [pid 1008] close(7 [pid 1007] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1004] <... futex resumed>) = 0 [pid 1003] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... openat resumed>) = 3 [pid 1011] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1010] <... creat resumed>) = 3 [pid 1009] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1008] <... close resumed>) = 0 [pid 1004] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1003] <... futex resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 1011] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1010] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1009] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1008] close(6 [pid 1004] <... futex resumed>) = 0 [pid 1003] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... ioctl resumed>) = 0 [pid 1011] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1010] <... futex resumed>) = 1 [pid 1009] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1007] <... futex resumed>) = 0 [pid 1011] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1010] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1009] <... open resumed>) = 5 [pid 1008] <... close resumed>) = 0 [pid 1007] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1004] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] close(3 [pid 1011] <... futex resumed>) = 1 [pid 1010] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1009] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1008] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1007] <... futex resumed>) = 0 [pid 1004] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1003] <... futex resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 1011] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1010] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1009] <... futex resumed>) = 0 [pid 1008] <... futex resumed>) = 1 [pid 1007] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1005] <... futex resumed>) = 0 [pid 1004] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1003] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1011] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1010] <... openat resumed>) = 4 [pid 1009] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1008] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1005] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1004] <... futex resumed>) = 0 [pid 1003] <... futex resumed>) = 0 [pid 1011] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1009] <... mmap resumed>) = 0x20000000 [pid 1003] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1011] <... open resumed>) = 5 [pid 1009] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1011] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1009] <... futex resumed>) = 0 [pid 1011] <... futex resumed>) = 1 [pid 1009] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1003] <... futex resumed>) = 0 [pid 1011] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1003] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1011] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1003] <... futex resumed>) = 0 [pid 1011] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1003] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1011] <... mmap resumed>) = 0x20000000 [pid 1011] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1003] <... futex resumed>) = 0 [pid 1011] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1003] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1011] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1003] <... futex resumed>) = 0 [pid 1011] memfd_create("syzkaller", 0 [pid 1003] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1011] <... memfd_create resumed>) = 6 [pid 1011] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1011] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1010] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1008] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1005] <... futex resumed>) = 0 [pid 1004] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1011] <... write resumed>) = 131072 [pid 1011] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1011] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 7 [pid 1011] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1011] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1012 attached [pid 1012] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1012] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1008] mknod(0x20000000, 000 [pid 1005] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1010] <... futex resumed>) = 1 [pid 1008] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1007] <... futex resumed>) = 0 [pid 1004] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1012 [pid 1010] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1008] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1007] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1004] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1010] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1009] <... futex resumed>) = 0 [pid 1008] <... futex resumed>) = 1 [pid 1007] <... futex resumed>) = 0 [pid 1005] <... futex resumed>) = 0 [pid 1004] <... futex resumed>) = 1 [pid 1011] ioctl(7, LOOP_SET_FD, 6 [pid 1010] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1009] memfd_create("syzkaller", 0 [pid 1008] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1007] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1005] exit_group(0 [pid 1004] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1011] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1010] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1009] <... memfd_create resumed>) = 6 [pid 1008] <... futex resumed>) = ? [pid 1005] <... exit_group resumed>) = ? [pid 1011] close(7 [pid 1010] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1009] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1011] <... close resumed>) = 0 [pid 1009] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1008] +++ exited with 0 +++ [pid 1011] close(6 [pid 1010] <... futex resumed>) = 1 [pid 1009] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1007] <... futex resumed>) = 0 [pid 1005] +++ exited with 0 +++ [pid 1011] <... close resumed>) = 0 [pid 1010] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1009] <... write resumed>) = 131072 [pid 1007] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1011] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1010] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1009] munmap(0x7fe6f03b1000, 138412032 [pid 1007] <... futex resumed>) = 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1005, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1012] <... prctl resumed>) = 0 [pid 1011] <... futex resumed>) = 1 [pid 1010] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1009] <... munmap resumed>) = 0 [pid 1007] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1003] <... futex resumed>) = 0 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1012] setpgid(0, 0 [pid 1011] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1010] <... open resumed>) = 5 [pid 1009] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1003] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1012] <... setpgid resumed>) = 0 [pid 1011] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1010] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1009] <... openat resumed>) = 7 [pid 1003] <... futex resumed>) = 0 [pid 1012] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1011] mknod(0x20000000, 000 [pid 1010] <... futex resumed>) = 1 [pid 1009] ioctl(7, LOOP_SET_FD, 6 [pid 1007] <... futex resumed>) = 0 [pid 1003] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1012] <... openat resumed>) = 3 [pid 1011] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1010] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1009] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1007] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1012] write(3, "1000", 4 [pid 1011] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1010] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1009] ioctl(7, LOOP_CLR_FD [pid 1007] <... futex resumed>) = 0 [pid 1012] <... write resumed>) = 4 [pid 1011] <... futex resumed>) = 1 [pid 1010] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1009] <... ioctl resumed>) = 0 [pid 1007] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1003] <... futex resumed>) = 0 [pid 1012] close(3 [pid 1011] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1010] <... mmap resumed>) = 0x20000000 [pid 1003] exit_group(0 [pid 1012] <... close resumed>) = 0 [pid 1011] <... futex resumed>) = ? [pid 1010] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1003] <... exit_group resumed>) = ? executing program [pid 1012] write(1, "executing program\n", 18 [pid 1011] +++ exited with 0 +++ [pid 1010] <... futex resumed>) = 1 [pid 1007] <... futex resumed>) = 0 [pid 1003] +++ exited with 0 +++ [pid 1012] <... write resumed>) = 18 [pid 1010] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1009] ioctl(7, LOOP_SET_FD, 6 [pid 1007] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1003, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1012] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1010] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1009] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1007] <... futex resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1012] <... futex resumed>) = 0 [pid 1010] memfd_create("syzkaller", 0 [pid 1009] close(7 [pid 1007] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1012] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1010] <... memfd_create resumed>) = 6 [pid 1009] <... close resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 1012] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1010] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1009] close(6 [pid 1012] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1010] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1009] <... close resumed>) = 0 [pid 1012] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1009] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1012] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1009] <... futex resumed>) = 1 [pid 1012] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1009] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1012] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1012] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1010] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1004] <... futex resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1012] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1012] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1010] <... write resumed>) = 131072 [pid 1004] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1012] <... clone3 resumed> => {parent_tid=[1013]}, 88) = 1013 [pid 1010] munmap(0x7fe6f03b1000, 138412032 [pid 1004] <... futex resumed>) = 1 [pid 305] <... openat resumed>) = 3 [pid 1009] <... futex resumed>) = 0 [pid 1012] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1012] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1010] <... munmap resumed>) = 0 [pid 1009] mknod(0x20000000, 000 [pid 1004] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] ioctl(3, LOOP_CLR_FD [pid 303] <... restart_syscall resumed>) = 0 [pid 1012] <... futex resumed>) = 0 [pid 1010] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1009] <... mknod resumed>) = -1 EEXIST (File exists) [pid 305] <... ioctl resumed>) = 0 [pid 1012] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1010] <... openat resumed>) = 7 [pid 1009] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] close(3 [pid 1010] ioctl(7, LOOP_SET_FD, 6 [pid 1009] <... futex resumed>) = 1 [pid 1004] <... futex resumed>) = 0 [pid 1010] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1009] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 305] <... close resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1010] ioctl(7, LOOP_CLR_FD [pid 1004] exit_group(0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1010] <... ioctl resumed>) = 0 [pid 1009] <... futex resumed>) = ? [pid 1004] <... exit_group resumed>) = ? [pid 303] <... openat resumed>) = 3 ./strace-static-x86_64: Process 1013 attached [pid 1009] +++ exited with 0 +++ [pid 1013] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1004] +++ exited with 0 +++ [pid 303] ioctl(3, LOOP_CLR_FD [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1014 [pid 303] <... ioctl resumed>) = 0 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1004, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] close(3 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 303] <... close resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1013] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1013] memfd_create("syzkaller", 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1015 [pid 1013] <... memfd_create resumed>) = 3 [pid 1010] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1010] close(7) = 0 [pid 1010] close(6 [pid 1013] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1010] <... close resumed>) = 0 [pid 1010] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1007] <... futex resumed>) = 0 [pid 1010] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1007] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1010] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1007] <... futex resumed>) = 0 [pid 1010] mknod(0x20000000, 000 [pid 1007] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1010] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1010] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1007] <... futex resumed>) = 0 [pid 1010] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1007] exit_group(0 [pid 1010] <... futex resumed>) = ? [pid 1007] <... exit_group resumed>) = ? [pid 1010] +++ exited with 0 +++ [pid 1013] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1013] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1007] +++ exited with 0 +++ ./strace-static-x86_64: Process 1014 attached [pid 1014] set_robust_list(0x5555636e06a0, 24 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1007, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 1014] <... set_robust_list resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 1014] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1013] <... write resumed>) = 262144 [pid 1013] munmap(0x7fe6f03b1000, 138412032) = 0 ./strace-static-x86_64: Process 1015 attached [pid 1015] set_robust_list(0x5555636e06a0, 24 [pid 1014] <... prctl resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 1014] setpgid(0, 0) = 0 [pid 1015] <... set_robust_list resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1014] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 304] <... openat resumed>) = 3 [pid 304] ioctl(3, LOOP_CLR_FD) = 0 [pid 1014] <... openat resumed>) = 3 [pid 304] close(3 [pid 1014] write(3, "1000", 4 [pid 304] <... close resumed>) = 0 [pid 1014] <... write resumed>) = 4 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1014] close(3executing program [pid 1015] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1014] <... close resumed>) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 1014] write(1, "executing program\n", 18 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1016 [pid 1014] <... write resumed>) = 18 [pid 1014] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1014] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 302] <... openat resumed>) = 3 [pid 1014] <... rt_sigaction resumed>NULL, 8) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 1014] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 302] <... ioctl resumed>) = 0 [pid 1014] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 302] close(3 [pid 1014] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 302] <... close resumed>) = 0 [pid 1014] <... mmap resumed>) = 0x7fe6f87b1000 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1014] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1013] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 1014] <... mprotect resumed>) = 0 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1017 [pid 1013] ioctl(4, LOOP_SET_FD, 3 [pid 1014] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1014] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1015] <... prctl resumed>) = 0 [pid 1014] <... clone3 resumed> => {parent_tid=[1018]}, 88) = 1018 [pid 1013] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1014] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1014] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1014] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1015] setpgid(0, 0 [pid 1013] ioctl(4, LOOP_CLR_FD) = 0 [pid 1015] <... setpgid resumed>) = 0 [pid 1015] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1015] write(3, "1000", 4) = 4 [pid 1015] close(3) = 0 [pid 1015] write(1, "executing program\n", 18executing program ) = 18 [pid 1013] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 1018 attached ./strace-static-x86_64: Process 1017 attached ./strace-static-x86_64: Process 1016 attached ) = -1 EBUSY (Device or resource busy) [pid 1013] close(4) = 0 [pid 1013] close(3) = 0 [pid 1015] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1015] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1015] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1015] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1015] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1015] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1015] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1013] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1015] <... clone3 resumed> => {parent_tid=[1019]}, 88) = 1019 [pid 1012] <... futex resumed>) = 0 [pid 1012] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1015] rt_sigprocmask(SIG_SETMASK, [], [pid 1013] <... futex resumed>) = 1 [pid 1012] <... futex resumed>) = 0 [pid 1015] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1013] chdir("./file0" [pid 1012] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1015] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1013] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1015] <... futex resumed>) = 0 [pid 1013] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1015] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1013] <... futex resumed>) = 1 [pid 1012] <... futex resumed>) = 0 [pid 1013] creat("./bus", 000 [pid 1012] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1013] <... creat resumed>) = 3 [pid 1012] <... futex resumed>) = 0 [pid 1013] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1012] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1017] set_robust_list(0x5555636e06a0, 24 [pid 1016] set_robust_list(0x5555636e06a0, 24 [pid 1018] set_robust_list(0x7fe6f87d19a0, 24 [pid 1013] <... futex resumed>) = 0 [pid 1012] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1013] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1012] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1018] <... set_robust_list resumed>) = 0 [pid 1017] <... set_robust_list resumed>) = 0 [pid 1016] <... set_robust_list resumed>) = 0 [pid 1013] <... openat resumed>) = 4 [pid 1012] <... futex resumed>) = 0 [pid 1013] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1012] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1017] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1016] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1013] <... futex resumed>) = 0 [pid 1012] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1018] rt_sigprocmask(SIG_SETMASK, [], [pid 1017] <... prctl resumed>) = 0 [pid 1016] <... prctl resumed>) = 0 [pid 1013] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1012] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1018] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1017] setpgid(0, 0 [pid 1016] setpgid(0, 0 [pid 1013] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1012] <... futex resumed>) = 0 [pid 1018] memfd_create("syzkaller", 0 [pid 1017] <... setpgid resumed>) = 0 [pid 1016] <... setpgid resumed>) = 0 [pid 1013] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1012] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1018] <... memfd_create resumed>) = 3 [pid 1016] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1013] <... futex resumed>) = 0 [pid 1012] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1018] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1017] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1016] <... openat resumed>) = 3 [pid 1013] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1012] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1018] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1017] <... openat resumed>) = 3 [pid 1016] write(3, "1000", 4 [pid 1013] <... open resumed>) = 5 [pid 1012] <... futex resumed>) = 0 [pid 1013] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1012] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1017] write(3, "1000", 4 [pid 1016] <... write resumed>) = 4 [pid 1013] <... futex resumed>) = 0 [pid 1012] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1013] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1012] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1017] <... write resumed>) = 4 [pid 1016] close(3 [pid 1013] <... mmap resumed>) = 0x20000000 [pid 1012] <... futex resumed>) = 0 [pid 1013] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1012] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1018] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1017] close(3 [pid 1016] <... close resumed>) = 0 [pid 1013] <... futex resumed>) = 0 [pid 1012] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) executing program [pid 1017] <... close resumed>) = 0 [pid 1016] write(1, "executing program\n", 18 [pid 1013] memfd_create("syzkaller", 0 [pid 1012] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 1017] write(1, "executing program\n", 18 [pid 1016] <... write resumed>) = 18 [pid 1013] <... memfd_create resumed>) = 6 [pid 1012] <... futex resumed>) = 0 [pid 1017] <... write resumed>) = 18 [pid 1016] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1013] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1012] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1018] <... write resumed>) = 262144 [pid 1017] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1016] <... futex resumed>) = 0 [pid 1013] <... mmap resumed>) = 0x7fe6f03b1000 ./strace-static-x86_64: Process 1019 attached [pid 1018] munmap(0x7fe6f03b1000, 138412032 [pid 1017] <... futex resumed>) = 0 [pid 1016] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1013] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1018] <... munmap resumed>) = 0 [pid 1017] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1016] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1018] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1017] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1016] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1017] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1018] <... openat resumed>) = 4 [pid 1016] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1017] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1018] ioctl(4, LOOP_SET_FD, 3 [pid 1016] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1017] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1016] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1018] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1017] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1016] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1018] ioctl(4, LOOP_CLR_FD [pid 1017] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1016] <... mprotect resumed>) = 0 [pid 1018] <... ioctl resumed>) = 0 [pid 1017] <... mprotect resumed>) = 0 [pid 1019] set_robust_list(0x7fe6f87d19a0, 24 [pid 1017] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1016] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1013] <... write resumed>) = 131072 [pid 1017] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1016] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1017] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1016] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1019] <... set_robust_list resumed>) = 0 [pid 1013] munmap(0x7fe6f03b1000, 138412032 [pid 1019] rt_sigprocmask(SIG_SETMASK, [], [pid 1017] <... clone3 resumed> => {parent_tid=[1020]}, 88) = 1020 [pid 1013] <... munmap resumed>) = 0 [pid 1017] rt_sigprocmask(SIG_SETMASK, [], [pid 1016] <... clone3 resumed> => {parent_tid=[1021]}, 88) = 1021 [pid 1017] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1016] rt_sigprocmask(SIG_SETMASK, [], [pid 1017] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1016] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1017] <... futex resumed>) = 0 [pid 1016] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1017] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1016] <... futex resumed>) = 0 [pid 1019] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1016] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1013] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1019] memfd_create("syzkaller", 0 [pid 1018] ioctl(4, LOOP_SET_FD, 3 [pid 1013] <... openat resumed>) = 7 [pid 1019] <... memfd_create resumed>) = 3 [pid 1018] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1013] ioctl(7, LOOP_SET_FD, 6 [pid 1019] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1018] close(4 [pid 1013] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1019] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1018] <... close resumed>) = 0 [pid 1013] ioctl(7, LOOP_CLR_FD [pid 1019] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1018] close(3 [pid 1013] <... ioctl resumed>) = 0 [pid 1019] <... write resumed>) = 262144 [pid 1019] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1019] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 1019] ioctl(4, LOOP_SET_FD, 3 [pid 1013] ioctl(7, LOOP_SET_FD, 6 [pid 1018] <... close resumed>) = 0 [pid 1013] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1013] close(7 [pid 1019] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1018] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1013] <... close resumed>) = 0 [pid 1019] ioctl(4, LOOP_CLR_FD [pid 1013] close(6 [pid 1019] <... ioctl resumed>) = 0 [pid 1018] <... futex resumed>) = 1 [pid 1014] <... futex resumed>) = 0 [pid 1013] <... close resumed>) = 0 [pid 1018] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1014] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1013] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1018] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1014] <... futex resumed>) = 0 [pid 1013] <... futex resumed>) = 1 [pid 1012] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1020 attached [pid 1018] chdir("./file0" [pid 1014] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1013] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1012] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1020] set_robust_list(0x7fe6f87d19a0, 24 [pid 1018] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1013] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1012] <... futex resumed>) = 0 [pid 1020] <... set_robust_list resumed>) = 0 [pid 1018] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1013] mknod(0x20000000, 000 [pid 1012] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1021 attached [pid 1020] rt_sigprocmask(SIG_SETMASK, [], [pid 1019] ioctl(4, LOOP_SET_FD, 3 [pid 1018] <... futex resumed>) = 1 [pid 1014] <... futex resumed>) = 0 [pid 1013] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1021] set_robust_list(0x7fe6f87d19a0, 24 [pid 1020] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1019] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1018] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1014] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1013] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1021] <... set_robust_list resumed>) = 0 [pid 1020] memfd_create("syzkaller", 0 [pid 1019] close(4 [pid 1018] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1014] <... futex resumed>) = 0 [pid 1013] <... futex resumed>) = 1 [pid 1012] <... futex resumed>) = 0 [pid 1021] rt_sigprocmask(SIG_SETMASK, [], [pid 1020] <... memfd_create resumed>) = 3 [pid 1019] <... close resumed>) = 0 [pid 1018] creat("./bus", 000 [pid 1014] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1013] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1012] exit_group(0 [pid 1021] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1020] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1019] close(3 [pid 1018] <... creat resumed>) = 3 [pid 1013] <... futex resumed>) = ? [pid 1012] <... exit_group resumed>) = ? [pid 1021] memfd_create("syzkaller", 0 [pid 1020] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1019] <... close resumed>) = 0 [pid 1018] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1013] +++ exited with 0 +++ [pid 1012] +++ exited with 0 +++ [pid 1021] <... memfd_create resumed>) = 3 [pid 1019] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1021] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1019] <... futex resumed>) = 1 [pid 1015] <... futex resumed>) = 0 [pid 1021] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1019] chdir("./file0" [pid 1015] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1021] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1019] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1018] <... futex resumed>) = 1 [pid 1015] <... futex resumed>) = 0 [pid 1014] <... futex resumed>) = 0 [pid 1019] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1018] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1015] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1014] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1019] <... futex resumed>) = 0 [pid 1018] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1015] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1014] <... futex resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1012, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 1021] <... write resumed>) = 262144 [pid 1019] creat("./bus", 000 [pid 1018] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1015] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1014] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1020] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1019] <... creat resumed>) = 3 [pid 1018] <... openat resumed>) = 4 [pid 1015] <... futex resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 1019] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1018] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1015] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... restart_syscall resumed>) = 0 [pid 1019] <... futex resumed>) = 0 [pid 1018] <... futex resumed>) = 1 [pid 1015] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1014] <... futex resumed>) = 0 [pid 1020] <... write resumed>) = 262144 [pid 1021] munmap(0x7fe6f03b1000, 138412032 [pid 1019] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1018] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1015] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1014] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1021] <... munmap resumed>) = 0 [pid 1019] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1018] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1015] <... futex resumed>) = 0 [pid 1014] <... futex resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1021] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1019] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1018] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1015] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1014] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1021] <... openat resumed>) = 4 [pid 1019] <... openat resumed>) = 4 [pid 306] <... openat resumed>) = 3 [pid 1021] ioctl(4, LOOP_SET_FD, 3 [pid 1019] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] ioctl(3, LOOP_CLR_FD [pid 1021] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1019] <... futex resumed>) = 1 [pid 1015] <... futex resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 1021] ioctl(4, LOOP_CLR_FD [pid 1020] munmap(0x7fe6f03b1000, 138412032 [pid 1019] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1015] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1021] <... ioctl resumed>) = 0 [pid 1019] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1015] <... futex resumed>) = 0 [pid 306] close(3 [pid 1019] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1015] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1020] <... munmap resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 1020] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1019] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1018] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1019] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1015] <... futex resumed>) = 0 [pid 1019] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1015] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1021] ioctl(4, LOOP_SET_FD, 3 [pid 1019] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1015] <... futex resumed>) = 0 [pid 1021] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1019] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1015] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1021] close(4 [pid 1019] <... open resumed>) = 5 [pid 1021] <... close resumed>) = 0 [pid 1019] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1021] close(3 [pid 1019] <... futex resumed>) = 1 [pid 1015] <... futex resumed>) = 0 [pid 1021] <... close resumed>) = 0 [pid 1019] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1015] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1021] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1019] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1015] <... futex resumed>) = 0 [pid 1021] <... futex resumed>) = 1 [pid 1019] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1016] <... futex resumed>) = 0 [pid 1015] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1021] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1020] <... openat resumed>) = 4 [pid 1019] <... mmap resumed>) = 0x20000000 [pid 1018] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1016] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1021] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1019] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1018] <... futex resumed>) = 1 [pid 1016] <... futex resumed>) = 0 [pid 1014] <... futex resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1022 [pid 1021] chdir("./file0" [pid 1020] ioctl(4, LOOP_SET_FD, 3 [pid 1019] <... futex resumed>) = 1 [pid 1018] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1016] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1015] <... futex resumed>) = 0 [pid 1014] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1021] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1020] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1019] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1018] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1015] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1014] <... futex resumed>) = 0 [pid 1021] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1020] ioctl(4, LOOP_CLR_FD [pid 1019] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1018] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1015] <... futex resumed>) = 0 [pid 1014] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1021] <... futex resumed>) = 1 [pid 1020] <... ioctl resumed>) = 0 [pid 1019] memfd_create("syzkaller", 0 [pid 1018] <... open resumed>) = 5 [pid 1016] <... futex resumed>) = 0 [pid 1015] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1021] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1019] <... memfd_create resumed>) = 6 [pid 1018] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1016] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1021] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1019] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1018] <... futex resumed>) = 1 [pid 1016] <... futex resumed>) = 0 [pid 1014] <... futex resumed>) = 0 [pid 1021] creat("./bus", 000 [pid 1019] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1018] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1016] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1014] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1021] <... creat resumed>) = 3 [pid 1019] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1018] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1014] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1022 attached [pid 1021] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1020] ioctl(4, LOOP_SET_FD, 3 [pid 1019] <... write resumed>) = 131072 [pid 1018] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1014] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1022] set_robust_list(0x5555636e06a0, 24 [pid 1021] <... futex resumed>) = 1 [pid 1019] munmap(0x7fe6f03b1000, 138412032 [pid 1022] <... set_robust_list resumed>) = 0 [pid 1021] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1019] <... munmap resumed>) = 0 [pid 1022] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1019] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1022] <... prctl resumed>) = 0 [pid 1019] <... openat resumed>) = 7 [pid 1022] setpgid(0, 0 [pid 1019] ioctl(7, LOOP_SET_FD, 6 [pid 1022] <... setpgid resumed>) = 0 [pid 1019] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1022] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1019] ioctl(7, LOOP_CLR_FD [pid 1022] <... openat resumed>) = 3 [pid 1019] <... ioctl resumed>) = 0 [pid 1022] write(3, "1000", 4executing program ) = 4 [pid 1022] close(3) = 0 [pid 1022] write(1, "executing program\n", 18) = 18 [pid 1022] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1022] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1022] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1019] ioctl(7, LOOP_SET_FD, 6 [pid 1022] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1019] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1016] <... futex resumed>) = 0 [pid 1022] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1019] close(7 [pid 1022] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1019] <... close resumed>) = 0 [pid 1022] <... mprotect resumed>) = 0 [pid 1020] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1019] close(6 [pid 1018] <... mmap resumed>) = 0x20000000 [pid 1016] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1022] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1020] close(4 [pid 1019] <... close resumed>) = 0 [pid 1018] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1021] <... futex resumed>) = 0 [pid 1016] <... futex resumed>) = 1 [pid 1022] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1021] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1020] <... close resumed>) = 0 [pid 1019] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1018] <... futex resumed>) = 1 [pid 1016] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1014] <... futex resumed>) = 0 [pid 1022] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1021] <... openat resumed>) = 4 [pid 1020] close(3 [pid 1019] <... futex resumed>) = 1 [pid 1018] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1015] <... futex resumed>) = 0 [pid 1014] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1021] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1019] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1018] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1015] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1014] <... futex resumed>) = 0 [pid 1022] <... clone3 resumed> => {parent_tid=[1023]}, 88) = 1023 [pid 1021] <... futex resumed>) = 1 [pid 1020] <... close resumed>) = 0 [pid 1019] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1018] memfd_create("syzkaller", 0 [pid 1016] <... futex resumed>) = 0 [pid 1015] <... futex resumed>) = 0 [pid 1014] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1022] rt_sigprocmask(SIG_SETMASK, [], [pid 1021] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1020] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1019] mknod(0x20000000, 000 [pid 1018] <... memfd_create resumed>) = 6 [pid 1016] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1015] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1022] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1021] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1020] <... futex resumed>) = 1 [pid 1019] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1018] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1017] <... futex resumed>) = 0 [pid 1016] <... futex resumed>) = 0 [pid 1022] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1021] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1020] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1019] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1018] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1017] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1016] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1022] <... futex resumed>) = 0 [pid 1021] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1020] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1019] <... futex resumed>) = 1 [pid 1015] <... futex resumed>) = 0 [pid 1022] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1021] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1019] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1015] exit_group(0 [pid 1021] <... futex resumed>) = 0 [pid 1019] <... futex resumed>) = ? [pid 1015] <... exit_group resumed>) = ? [pid 1021] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1020] chdir("./file0" [pid 1019] +++ exited with 0 +++ [pid 1018] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1017] <... futex resumed>) = 0 [pid 1016] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1015] +++ exited with 0 +++ [pid 1020] <... chdir resumed>) = -1 ENOTDIR (Not a directory) ./strace-static-x86_64: Process 1023 attached [pid 1023] set_robust_list(0x7fe6f87d19a0, 24 [pid 1018] <... write resumed>) = 131072 [pid 1017] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1016] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1015, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1020] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1021] <... futex resumed>) = 0 [pid 1020] <... futex resumed>) = 0 [pid 1018] munmap(0x7fe6f03b1000, 138412032 [pid 1017] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1016] <... futex resumed>) = 1 [pid 1021] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1020] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1021] <... open resumed>) = 5 [pid 1018] <... munmap resumed>) = 0 [pid 1020] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1017] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1016] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1023] <... set_robust_list resumed>) = 0 [pid 1021] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1020] creat("./bus", 000 [pid 1018] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1017] <... futex resumed>) = 0 [pid 1016] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1021] <... futex resumed>) = 0 [pid 1020] <... creat resumed>) = 3 [pid 1018] <... openat resumed>) = 7 [pid 1017] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1016] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1021] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1020] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1018] ioctl(7, LOOP_SET_FD, 6 [pid 1017] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1016] <... futex resumed>) = 0 [pid 1020] <... futex resumed>) = 0 [pid 1018] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1017] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1016] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1023] rt_sigprocmask(SIG_SETMASK, [], [pid 1021] <... mmap resumed>) = 0x20000000 [pid 1020] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1018] ioctl(7, LOOP_CLR_FD [pid 1017] <... futex resumed>) = 0 [pid 1023] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1021] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1020] <... openat resumed>) = 4 [pid 1018] <... ioctl resumed>) = 0 [pid 1017] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1023] memfd_create("syzkaller", 0 [pid 1021] <... futex resumed>) = 1 [pid 1020] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1017] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1016] <... futex resumed>) = 0 [pid 1021] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1020] <... futex resumed>) = 0 [pid 1017] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1016] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1023] <... memfd_create resumed>) = 3 [pid 1021] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1020] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1017] <... futex resumed>) = 0 [pid 1016] <... futex resumed>) = 0 [pid 1021] memfd_create("syzkaller", 0 [pid 1016] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1023] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1021] <... memfd_create resumed>) = 6 [pid 1020] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1017] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1023] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1021] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1020] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1017] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1021] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1020] <... futex resumed>) = 0 [pid 1021] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1020] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1017] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1023] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1021] <... write resumed>) = 131072 [pid 1020] <... open resumed>) = 5 [pid 1018] ioctl(7, LOOP_SET_FD, 6 [pid 1021] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1021] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 7 [pid 1021] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1021] ioctl(7, LOOP_CLR_FD) = 0 [pid 1017] <... futex resumed>) = 0 [pid 1017] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1020] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1018] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1020] <... futex resumed>) = 1 [pid 1018] close(7 [pid 1017] <... futex resumed>) = 0 [pid 1020] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1018] <... close resumed>) = 0 [pid 1017] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1017] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1021] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1021] close(7) = 0 [pid 1021] close(6) = 0 [pid 1021] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1023] <... write resumed>) = 262144 [pid 1021] <... futex resumed>) = 1 [pid 1016] <... futex resumed>) = 0 [pid 1021] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1016] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1021] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1016] <... futex resumed>) = 0 [pid 1021] mknod(0x20000000, 000 [pid 1016] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1021] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1021] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1016] <... futex resumed>) = 0 [pid 1021] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1016] exit_group(0 [pid 1021] <... futex resumed>) = ? [pid 1016] <... exit_group resumed>) = ? [pid 1021] +++ exited with 0 +++ [pid 1016] +++ exited with 0 +++ [pid 1020] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1018] close(6 [pid 1020] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1016, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 1023] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1018] <... close resumed>) = 0 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 1023] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1020] <... mmap resumed>) = 0x20000000 [pid 1020] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1018] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... restart_syscall resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1023] <... openat resumed>) = 4 [pid 1020] <... futex resumed>) = 1 [pid 1018] <... futex resumed>) = 1 [pid 1017] <... futex resumed>) = 0 [pid 1014] <... futex resumed>) = 0 [pid 303] <... openat resumed>) = 3 [pid 1020] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1018] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1017] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1014] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 303] ioctl(3, LOOP_CLR_FD [pid 1020] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1018] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1017] <... futex resumed>) = 0 [pid 1014] <... futex resumed>) = 0 [pid 304] <... openat resumed>) = 3 [pid 1020] memfd_create("syzkaller", 0 [pid 303] <... ioctl resumed>) = 0 [pid 1014] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1018] mknod(0x20000000, 000 [pid 1020] <... memfd_create resumed>) = 6 [pid 1017] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 304] ioctl(3, LOOP_CLR_FD [pid 1020] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1018] <... mknod resumed>) = -1 EEXIST (File exists) [pid 304] <... ioctl resumed>) = 0 [pid 303] close(3 [pid 1020] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1018] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] close(3 [pid 303] <... close resumed>) = 0 [pid 1023] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1023] ioctl(4, LOOP_CLR_FD) = 0 [pid 1020] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1018] <... futex resumed>) = 1 [pid 1014] <... futex resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1018] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1023] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1023] close(4 [pid 1020] <... write resumed>) = 131072 [pid 1014] exit_group(0 [pid 1023] <... close resumed>) = 0 [pid 1023] close(3) = 0 [pid 1020] munmap(0x7fe6f03b1000, 138412032 [pid 1018] <... futex resumed>) = ? [pid 1014] <... exit_group resumed>) = ? [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1018] +++ exited with 0 +++ [pid 1023] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1020] <... munmap resumed>) = 0 [pid 1014] +++ exited with 0 +++ [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1024 [pid 1020] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1025 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1014, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1020] <... openat resumed>) = 7 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1020] ioctl(7, LOOP_SET_FD, 6 [pid 1023] <... futex resumed>) = 1 [pid 1022] <... futex resumed>) = 0 [pid 1023] chdir("./file0" [pid 1022] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1023] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1022] <... futex resumed>) = 0 [pid 1020] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1023] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1022] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1020] ioctl(7, LOOP_CLR_FD [pid 1023] <... futex resumed>) = 0 [pid 1022] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1020] <... ioctl resumed>) = 0 [pid 1023] creat("./bus", 000 [pid 1022] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1023] <... creat resumed>) = 3 [pid 1022] <... futex resumed>) = 0 [pid 1023] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1022] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1023] <... futex resumed>) = 0 [pid 1022] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1023] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1022] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1023] <... openat resumed>) = 4 [pid 1022] <... futex resumed>) = 0 [pid 1023] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1022] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1023] <... futex resumed>) = 0 [pid 1022] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1020] ioctl(7, LOOP_SET_FD, 6 [pid 305] <... restart_syscall resumed>) = 0 [pid 1023] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1022] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1020] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1023] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1022] <... futex resumed>) = 0 [pid 1020] close(7./strace-static-x86_64: Process 1025 attached ./strace-static-x86_64: Process 1024 attached [pid 1023] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1022] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1020] <... close resumed>) = 0 [pid 1023] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1020] close(6 [pid 1025] set_robust_list(0x5555636e06a0, 24 [pid 1024] set_robust_list(0x5555636e06a0, 24 [pid 1023] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1025] <... set_robust_list resumed>) = 0 [pid 1024] <... set_robust_list resumed>) = 0 [pid 1023] <... futex resumed>) = 1 [pid 1022] <... futex resumed>) = 0 [pid 1020] <... close resumed>) = 0 [pid 1023] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1022] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1020] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... openat resumed>) = 3 [pid 1025] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1024] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1023] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1022] <... futex resumed>) = 0 [pid 1020] <... futex resumed>) = 1 [pid 1017] <... futex resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 1024] <... prctl resumed>) = 0 [pid 1023] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1022] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1020] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1017] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1025] <... prctl resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 1023] <... open resumed>) = 5 [pid 1023] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1025] setpgid(0, 0 [pid 1024] setpgid(0, 0 [pid 1023] <... futex resumed>) = 1 [pid 1022] <... futex resumed>) = 0 [pid 1020] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1017] <... futex resumed>) = 0 [pid 305] close(3 [pid 1025] <... setpgid resumed>) = 0 [pid 1024] <... setpgid resumed>) = 0 [pid 1023] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1022] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1020] mknod(0x20000000, 000 [pid 1017] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1025] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1024] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1023] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1022] <... futex resumed>) = 0 [pid 1020] <... mknod resumed>) = -1 EEXIST (File exists) [pid 305] <... close resumed>) = 0 [pid 1025] <... openat resumed>) = 3 [pid 1024] <... openat resumed>) = 3 [pid 1023] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1022] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1020] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1025] write(3, "1000", 4 [pid 1024] write(3, "1000", 4 [pid 1023] <... mmap resumed>) = 0x20000000 [pid 1020] <... futex resumed>) = 1 [pid 1017] <... futex resumed>) = 0 [pid 1025] <... write resumed>) = 4 [pid 1024] <... write resumed>) = 4 [pid 1023] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1020] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1025] close(3 [pid 1024] close(3 [pid 1023] <... futex resumed>) = 1 [pid 1022] <... futex resumed>) = 0 [pid 1017] exit_group(0 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1026 [pid 1025] <... close resumed>) = 0 [pid 1024] <... close resumed>) = 0 [pid 1023] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1022] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1017] <... exit_group resumed>) = ? [pid 1025] write(1, "executing program\n", 18 [pid 1024] write(1, "executing program\n", 18 [pid 1023] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1022] <... futex resumed>) = 0 [pid 1020] <... futex resumed>) = ? [pid 1023] memfd_create("syzkaller", 0 [pid 1022] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1023] <... memfd_create resumed>) = 6 [pid 1023] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 executing program executing program [pid 1023] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1025] <... write resumed>) = 18 [pid 1024] <... write resumed>) = 18 [pid 1023] <... write resumed>) = 131072 [pid 1020] +++ exited with 0 +++ [pid 1017] +++ exited with 0 +++ [pid 1025] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1024] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1023] munmap(0x7fe6f03b1000, 138412032 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1017, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1025] <... futex resumed>) = 0 [pid 1024] <... futex resumed>) = 0 [pid 1023] <... munmap resumed>) = 0 [pid 1025] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1024] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1023] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1025] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1024] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1023] <... openat resumed>) = 7 [pid 1025] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1024] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1023] ioctl(7, LOOP_SET_FD, 6 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1025] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1024] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1023] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1025] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1024] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1023] ioctl(7, LOOP_CLR_FD [pid 302] <... openat resumed>) = 3 [pid 1025] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1024] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1023] <... ioctl resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 1025] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1024] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1025] <... mprotect resumed>) = 0 [pid 1024] <... mprotect resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 1025] rt_sigprocmask(SIG_BLOCK, ~[], [pid 302] close(3 [pid 1025] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1024] rt_sigprocmask(SIG_BLOCK, ~[], [pid 302] <... close resumed>) = 0 [pid 1025] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1024] <... rt_sigprocmask resumed>[], 8) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1024] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0}./strace-static-x86_64: Process 1026 attached [pid 1025] <... clone3 resumed> => {parent_tid=[1027]}, 88) = 1027 [pid 1023] ioctl(7, LOOP_SET_FD, 6 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1028 [pid 1026] set_robust_list(0x5555636e06a0, 24 [pid 1025] rt_sigprocmask(SIG_SETMASK, [], [pid 1024] <... clone3 resumed> => {parent_tid=[1029]}, 88) = 1029 [pid 1023] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1026] <... set_robust_list resumed>) = 0 [pid 1025] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1024] rt_sigprocmask(SIG_SETMASK, [], [pid 1023] close(7 [pid 1026] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1025] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1024] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1023] <... close resumed>) = 0 [pid 1026] <... prctl resumed>) = 0 [pid 1025] <... futex resumed>) = 0 [pid 1024] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1023] close(6 [pid 1026] setpgid(0, 0 [pid 1025] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1024] <... futex resumed>) = 0 [pid 1023] <... close resumed>) = 0 [pid 1026] <... setpgid resumed>) = 0 [pid 1024] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1023] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1028 attached [pid 1026] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1023] <... futex resumed>) = 1 [pid 1022] <... futex resumed>) = 0 [pid 1028] set_robust_list(0x5555636e06a0, 24 [pid 1026] <... openat resumed>) = 3 [pid 1023] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1022] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1023] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1022] <... futex resumed>) = 0 [pid 1023] mknod(0x20000000, 000 [pid 1022] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1023] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1023] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1022] <... futex resumed>) = 0 [pid 1023] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1022] exit_group(0 [pid 1023] <... futex resumed>) = ? [pid 1022] <... exit_group resumed>) = ? [pid 1023] +++ exited with 0 +++ [pid 1022] +++ exited with 0 +++ [pid 1026] write(3, "1000", 4 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1022, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 1028] <... set_robust_list resumed>) = 0 [pid 1026] <... write resumed>) = 4 [pid 306] restart_syscall(<... resuming interrupted clone ...>executing program [pid 1028] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1026] close(3 [pid 306] <... restart_syscall resumed>) = 0 [pid 1026] <... close resumed>) = 0 [pid 1028] <... prctl resumed>) = 0 [pid 1026] write(1, "executing program\n", 18 [pid 1028] setpgid(0, 0 [pid 1026] <... write resumed>) = 18 [pid 1028] <... setpgid resumed>) = 0 [pid 1026] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1026] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1027 attached [pid 1028] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1026] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 306] <... openat resumed>) = 3 [pid 1026] <... rt_sigaction resumed>NULL, 8) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 1028] <... openat resumed>) = 3 [pid 1027] set_robust_list(0x7fe6f87d19a0, 24 [pid 1026] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 306] <... ioctl resumed>) = 0 [pid 1028] write(3, "1000", 4 [pid 1026] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 306] close(3 [pid 1026] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 306] <... close resumed>) = 0 [pid 1028] <... write resumed>) = 4 [pid 1026] <... mmap resumed>) = 0x7fe6f87b1000 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1028] close(3 [pid 1027] <... set_robust_list resumed>) = 0 [pid 1026] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1027] rt_sigprocmask(SIG_SETMASK, [], [pid 1028] <... close resumed>) = 0 [pid 1027] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1026] <... mprotect resumed>) = 0 executing program ./strace-static-x86_64: Process 1029 attached [pid 1028] write(1, "executing program\n", 18 [pid 1027] memfd_create("syzkaller", 0 [pid 1026] rt_sigprocmask(SIG_BLOCK, ~[], [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1030 [pid 1029] set_robust_list(0x7fe6f87d19a0, 24 [pid 1028] <... write resumed>) = 18 [pid 1027] <... memfd_create resumed>) = 3 [pid 1026] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1026] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1028] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1029] <... set_robust_list resumed>) = 0 [pid 1028] <... futex resumed>) = 0 [pid 1027] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1028] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1029] rt_sigprocmask(SIG_SETMASK, [], [pid 1027] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1026] <... clone3 resumed> => {parent_tid=[1031]}, 88) = 1031 [pid 1029] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1028] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1027] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1026] rt_sigprocmask(SIG_SETMASK, [], [pid 1029] memfd_create("syzkaller", 0 [pid 1028] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1026] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1028] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1026] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1029] <... memfd_create resumed>) = 3 [pid 1028] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1026] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1029] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1028] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1028] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1029] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1028] <... mprotect resumed>) = 0 [pid 1028] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1027] <... write resumed>) = 262144 [pid 1027] munmap(0x7fe6f03b1000, 138412032 [pid 1029] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1028] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1027] <... munmap resumed>) = 0 [pid 1028] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0}./strace-static-x86_64: Process 1030 attached => {parent_tid=[1032]}, 88) = 1032 [pid 1028] rt_sigprocmask(SIG_SETMASK, [], [pid 1030] set_robust_list(0x5555636e06a0, 24 [pid 1028] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1030] <... set_robust_list resumed>) = 0 [pid 1028] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1027] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1028] <... futex resumed>) = 0 [pid 1030] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1028] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1027] <... openat resumed>) = 4 [pid 1030] <... prctl resumed>) = 0 [pid 1027] ioctl(4, LOOP_SET_FD, 3 [pid 1029] <... write resumed>) = 262144 [pid 1030] setpgid(0, 0 [pid 1027] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1030] <... setpgid resumed>) = 0 [pid 1030] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1027] ioctl(4, LOOP_CLR_FD./strace-static-x86_64: Process 1031 attached [pid 1030] <... openat resumed>) = 3 [pid 1027] <... ioctl resumed>) = 0 [pid 1031] set_robust_list(0x7fe6f87d19a0, 24 [pid 1030] write(3, "1000", 4 [pid 1031] <... set_robust_list resumed>) = 0 [pid 1030] <... write resumed>) = 4 [pid 1031] rt_sigprocmask(SIG_SETMASK, [], [pid 1030] close(3 [pid 1031] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1030] <... close resumed>) = 0 [pid 1031] memfd_create("syzkaller", 0 [pid 1030] write(1, "executing program\n", 18executing program [pid 1031] <... memfd_create resumed>) = 3 [pid 1030] <... write resumed>) = 18 [pid 1031] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1030] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1027] ioctl(4, LOOP_SET_FD, 3 [pid 1031] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1030] <... futex resumed>) = 0 [pid 1029] munmap(0x7fe6f03b1000, 138412032 [pid 1027] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1030] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1029] <... munmap resumed>) = 0 [pid 1027] close(4./strace-static-x86_64: Process 1032 attached [pid 1031] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1030] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1029] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1027] <... close resumed>) = 0 [pid 1032] set_robust_list(0x7fe6f87d19a0, 24 [pid 1030] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1029] <... openat resumed>) = 4 [pid 1027] close(3 [pid 1032] <... set_robust_list resumed>) = 0 [pid 1030] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1029] ioctl(4, LOOP_SET_FD, 3 [pid 1027] <... close resumed>) = 0 [pid 1032] rt_sigprocmask(SIG_SETMASK, [], [pid 1030] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1029] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1027] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1032] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1029] ioctl(4, LOOP_CLR_FD [pid 1032] memfd_create("syzkaller", 0 [pid 1030] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1029] <... ioctl resumed>) = 0 [pid 1027] <... futex resumed>) = 1 [pid 1025] <... futex resumed>) = 0 [pid 1032] <... memfd_create resumed>) = 3 [pid 1025] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1032] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1025] <... futex resumed>) = 0 [pid 1032] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1025] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1031] <... write resumed>) = 262144 [pid 1030] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1027] chdir("./file0" [pid 1029] ioctl(4, LOOP_SET_FD, 3 [pid 1030] <... mprotect resumed>) = 0 [pid 1029] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1027] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1032] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1030] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1029] close(4 [pid 1030] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1027] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1030] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1029] <... close resumed>) = 0 [pid 1027] <... futex resumed>) = 1 [pid 1025] <... futex resumed>) = 0 [pid 1029] close(3 [pid 1027] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1025] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1032] <... write resumed>) = 262144 [pid 1031] munmap(0x7fe6f03b1000, 138412032 [pid 1030] <... clone3 resumed> => {parent_tid=[1033]}, 88) = 1033 [pid 1027] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1031] <... munmap resumed>) = 0 [pid 1030] rt_sigprocmask(SIG_SETMASK, [], [pid 1027] creat("./bus", 000 [pid 1031] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1030] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1029] <... close resumed>) = 0 [pid 1027] <... creat resumed>) = 3 [pid 1032] munmap(0x7fe6f03b1000, 138412032 [pid 1031] <... openat resumed>) = 4 [pid 1030] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1029] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1027] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1025] <... futex resumed>) = 0 [pid 1032] <... munmap resumed>) = 0 [pid 1031] ioctl(4, LOOP_SET_FD, 3 [pid 1030] <... futex resumed>) = 0 [pid 1029] <... futex resumed>) = 1 [pid 1027] <... futex resumed>) = 0 [pid 1025] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1024] <... futex resumed>) = 0 [pid 1032] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1031] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1030] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1029] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1027] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1025] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1024] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1032] <... openat resumed>) = 4 [pid 1031] ioctl(4, LOOP_CLR_FD [pid 1029] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1025] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1024] <... futex resumed>) = 0 [pid 1032] ioctl(4, LOOP_SET_FD, 3 [pid 1031] <... ioctl resumed>) = 0 [pid 1029] chdir("./file0" [pid 1027] <... futex resumed>) = 0 [pid 1025] <... futex resumed>) = 1 [pid 1024] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1033 attached [pid 1032] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1029] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1027] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1025] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1033] set_robust_list(0x7fe6f87d19a0, 24 [pid 1032] ioctl(4, LOOP_CLR_FD [pid 1029] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1033] <... set_robust_list resumed>) = 0 [pid 1032] <... ioctl resumed>) = 0 [pid 1029] <... futex resumed>) = 1 [pid 1027] <... openat resumed>) = 4 [pid 1024] <... futex resumed>) = 0 [pid 1033] rt_sigprocmask(SIG_SETMASK, [], [pid 1029] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1027] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1024] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1033] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1029] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1027] <... futex resumed>) = 1 [pid 1025] <... futex resumed>) = 0 [pid 1024] <... futex resumed>) = 0 [pid 1033] memfd_create("syzkaller", 0 [pid 1029] creat("./bus", 000 [pid 1027] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1025] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1024] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1033] <... memfd_create resumed>) = 3 [pid 1029] <... creat resumed>) = 3 [pid 1027] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1025] <... futex resumed>) = 0 [pid 1033] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1029] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1027] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1025] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1033] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1029] <... futex resumed>) = 1 [pid 1024] <... futex resumed>) = 0 [pid 1029] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1027] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1024] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1032] ioctl(4, LOOP_SET_FD, 3 [pid 1031] ioctl(4, LOOP_SET_FD, 3 [pid 1029] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1027] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1024] <... futex resumed>) = 0 [pid 1032] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1031] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1029] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1027] <... futex resumed>) = 1 [pid 1025] <... futex resumed>) = 0 [pid 1024] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1033] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1032] close(4 [pid 1031] close(4 [pid 1029] <... openat resumed>) = 4 [pid 1027] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1025] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1033] <... write resumed>) = 262144 [pid 1032] <... close resumed>) = 0 [pid 1031] <... close resumed>) = 0 [pid 1029] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1027] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1025] <... futex resumed>) = 0 [pid 1032] close(3 [pid 1031] close(3 [pid 1029] <... futex resumed>) = 1 [pid 1027] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1025] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1024] <... futex resumed>) = 0 [pid 1032] <... close resumed>) = 0 [pid 1029] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1027] <... open resumed>) = 5 [pid 1024] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1032] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1029] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1027] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1024] <... futex resumed>) = 0 [pid 1033] munmap(0x7fe6f03b1000, 138412032 [pid 1032] <... futex resumed>) = 1 [pid 1029] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1028] <... futex resumed>) = 0 [pid 1027] <... futex resumed>) = 1 [pid 1025] <... futex resumed>) = 0 [pid 1024] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1033] <... munmap resumed>) = 0 [pid 1032] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1031] <... close resumed>) = 0 [pid 1028] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1027] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1025] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1033] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1032] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1031] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1028] <... futex resumed>) = 0 [pid 1027] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1025] <... futex resumed>) = 0 [pid 1033] <... openat resumed>) = 4 [pid 1032] chdir("./file0" [pid 1031] <... futex resumed>) = 1 [pid 1028] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1027] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1026] <... futex resumed>) = 0 [pid 1025] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1033] ioctl(4, LOOP_SET_FD, 3 [pid 1032] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1026] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1033] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1032] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1026] <... futex resumed>) = 0 [pid 1033] ioctl(4, LOOP_CLR_FD [pid 1032] <... futex resumed>) = 1 [pid 1031] chdir("./file0" [pid 1028] <... futex resumed>) = 0 [pid 1027] <... mmap resumed>) = 0x20000000 [pid 1026] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1033] <... ioctl resumed>) = 0 [pid 1032] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1031] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1028] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1027] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1032] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1028] <... futex resumed>) = 0 [pid 1032] creat("./bus", 000 [pid 1031] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1028] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1027] <... futex resumed>) = 1 [pid 1025] <... futex resumed>) = 0 [pid 1032] <... creat resumed>) = 3 [pid 1032] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1028] <... futex resumed>) = 0 [pid 1025] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1032] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1031] <... futex resumed>) = 1 [pid 1028] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1027] memfd_create("syzkaller", 0 [pid 1026] <... futex resumed>) = 0 [pid 1025] <... futex resumed>) = 0 [pid 1032] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1028] <... futex resumed>) = 0 [pid 1026] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1025] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1032] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1031] creat("./bus", 000 [pid 1028] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1027] <... memfd_create resumed>) = 6 [pid 1026] <... futex resumed>) = 0 [pid 1032] <... openat resumed>) = 4 [pid 1027] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1026] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1032] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1033] ioctl(4, LOOP_SET_FD, 3 [pid 1032] <... futex resumed>) = 1 [pid 1028] <... futex resumed>) = 0 [pid 1027] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1033] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1032] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1031] <... creat resumed>) = 3 [pid 1028] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1033] close(4 [pid 1032] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1028] <... futex resumed>) = 0 [pid 1033] <... close resumed>) = 0 [pid 1032] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1028] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1033] close(3) = 0 [pid 1033] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1033] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1031] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1030] <... futex resumed>) = 0 [pid 1029] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1027] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1032] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1031] <... futex resumed>) = 1 [pid 1030] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1029] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1026] <... futex resumed>) = 0 [pid 1033] <... futex resumed>) = 0 [pid 1032] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1030] <... futex resumed>) = 1 [pid 1029] <... futex resumed>) = 1 [pid 1026] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1024] <... futex resumed>) = 0 [pid 1033] chdir("./file0" [pid 1032] <... futex resumed>) = 1 [pid 1030] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1029] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1028] <... futex resumed>) = 0 [pid 1026] <... futex resumed>) = 0 [pid 1024] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1033] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1032] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1031] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1029] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1028] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1027] <... write resumed>) = 131072 [pid 1026] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1024] <... futex resumed>) = 0 [pid 1033] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1032] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1031] <... openat resumed>) = 4 [pid 1029] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1028] <... futex resumed>) = 0 [pid 1027] munmap(0x7fe6f03b1000, 138412032 [pid 1024] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1033] <... futex resumed>) = 1 [pid 1032] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1030] <... futex resumed>) = 0 [pid 1029] <... open resumed>) = 5 [pid 1028] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1033] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1032] <... open resumed>) = 5 [pid 1031] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1030] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1029] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1027] <... munmap resumed>) = 0 [pid 1033] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1032] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1029] <... futex resumed>) = 1 [pid 1024] <... futex resumed>) = 0 [pid 1033] creat("./bus", 000 [pid 1032] <... futex resumed>) = 1 [pid 1031] <... futex resumed>) = 1 [pid 1030] <... futex resumed>) = 0 [pid 1029] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1028] <... futex resumed>) = 0 [pid 1027] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1026] <... futex resumed>) = 0 [pid 1024] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1033] <... creat resumed>) = 3 [pid 1032] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1031] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1030] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1029] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1028] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1027] <... openat resumed>) = 7 [pid 1026] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1024] <... futex resumed>) = 0 [pid 1033] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1032] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1031] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1030] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1029] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1028] <... futex resumed>) = 0 [pid 1024] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1033] <... futex resumed>) = 0 [pid 1032] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1031] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1030] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1029] <... mmap resumed>) = 0x20000000 [pid 1028] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1027] ioctl(7, LOOP_SET_FD, 6 [pid 1026] <... futex resumed>) = 0 [pid 1033] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1032] <... mmap resumed>) = 0x20000000 [pid 1030] <... futex resumed>) = 0 [pid 1029] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1026] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1027] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1033] <... openat resumed>) = 4 [pid 1032] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1031] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1030] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1029] <... futex resumed>) = 1 [pid 1027] ioctl(7, LOOP_CLR_FD [pid 1024] <... futex resumed>) = 0 [pid 1033] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1032] <... futex resumed>) = 1 [pid 1031] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1030] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1029] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1028] <... futex resumed>) = 0 [pid 1027] <... ioctl resumed>) = 0 [pid 1024] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1033] <... futex resumed>) = 0 [pid 1032] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1030] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1029] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1028] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1024] <... futex resumed>) = 0 [pid 1026] <... futex resumed>) = 0 [pid 1033] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1032] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1031] <... futex resumed>) = 1 [pid 1030] <... futex resumed>) = 0 [pid 1029] memfd_create("syzkaller", 0 [pid 1028] <... futex resumed>) = 0 [pid 1026] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1024] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1033] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1032] memfd_create("syzkaller", 0 [pid 1031] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1030] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1029] <... memfd_create resumed>) = 6 [pid 1028] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1026] <... futex resumed>) = 0 [pid 1033] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1032] <... memfd_create resumed>) = 6 [pid 1031] <... open resumed>) = 5 [pid 1030] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1029] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1026] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1033] <... futex resumed>) = 0 [pid 1032] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1031] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1030] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1029] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1026] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1033] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1032] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1031] <... futex resumed>) = 0 [pid 1030] <... futex resumed>) = 0 [pid 1029] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1027] ioctl(7, LOOP_SET_FD, 6 [pid 1026] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1033] <... open resumed>) = 5 [pid 1032] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1031] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1030] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1029] <... write resumed>) = 131072 [pid 1027] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1026] <... futex resumed>) = 0 [pid 1033] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1032] <... write resumed>) = 131072 [pid 1029] munmap(0x7fe6f03b1000, 138412032 [pid 1033] <... futex resumed>) = 0 [pid 1032] munmap(0x7fe6f03b1000, 138412032 [pid 1031] <... mmap resumed>) = 0x20000000 [pid 1030] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1029] <... munmap resumed>) = 0 [pid 1027] close(7 [pid 1026] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1033] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1032] <... munmap resumed>) = 0 [pid 1031] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1030] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1029] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1027] <... close resumed>) = 0 [pid 1026] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1033] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1032] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1031] <... futex resumed>) = 0 [pid 1030] <... futex resumed>) = 0 [pid 1029] <... openat resumed>) = 7 [pid 1027] close(6 [pid 1033] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1032] <... openat resumed>) = 7 [pid 1031] memfd_create("syzkaller", 0 [pid 1030] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1029] ioctl(7, LOOP_SET_FD, 6 [pid 1026] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1033] <... mmap resumed>) = 0x20000000 [pid 1032] ioctl(7, LOOP_SET_FD, 6 [pid 1031] <... memfd_create resumed>) = 6 [pid 1029] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1027] <... close resumed>) = 0 [pid 1026] <... futex resumed>) = 0 [pid 1033] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1032] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1031] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1029] ioctl(7, LOOP_CLR_FD [pid 1027] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1026] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1033] <... futex resumed>) = 1 [pid 1032] ioctl(7, LOOP_CLR_FD [pid 1031] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1030] <... futex resumed>) = 0 [pid 1029] <... ioctl resumed>) = 0 [pid 1033] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1032] <... ioctl resumed>) = 0 [pid 1027] <... futex resumed>) = 1 [pid 1025] <... futex resumed>) = 0 [pid 1031] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1030] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1027] mknod(0x20000000, 000 [pid 1025] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1029] ioctl(7, LOOP_SET_FD, 6 [pid 1032] ioctl(7, LOOP_SET_FD, 6 [pid 1029] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1032] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1029] close(7 [pid 1032] close(7 [pid 1029] <... close resumed>) = 0 [pid 1032] <... close resumed>) = 0 [pid 1029] close(6 [pid 1033] <... futex resumed>) = 0 [pid 1032] close(6 [pid 1031] <... write resumed>) = 131072 [pid 1030] <... futex resumed>) = 1 [pid 1029] <... close resumed>) = 0 [pid 1027] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1025] <... futex resumed>) = 0 [pid 1033] memfd_create("syzkaller", 0 [pid 1032] <... close resumed>) = 0 [pid 1031] munmap(0x7fe6f03b1000, 138412032 [pid 1029] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1032] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1029] <... futex resumed>) = 1 [pid 1024] <... futex resumed>) = 0 [pid 1032] <... futex resumed>) = 1 [pid 1029] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1028] <... futex resumed>) = 0 [pid 1024] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1030] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1033] <... memfd_create resumed>) = 6 [pid 1032] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1029] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1028] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1027] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1025] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1024] <... futex resumed>) = 0 [pid 1033] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1032] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1031] <... munmap resumed>) = 0 [pid 1029] mknod(0x20000000, 000 [pid 1028] <... futex resumed>) = 0 [pid 1024] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1032] mknod(0x20000000, 000 [pid 1029] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1028] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1027] <... futex resumed>) = 0 [pid 1025] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1032] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1029] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1032] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1029] <... futex resumed>) = 1 [pid 1024] <... futex resumed>) = 0 [pid 1032] <... futex resumed>) = 1 [pid 1029] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1028] <... futex resumed>) = 0 [pid 1024] exit_group(0 [pid 1032] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1029] <... futex resumed>) = ? [pid 1028] exit_group(0 [pid 1024] <... exit_group resumed>) = ? [pid 1033] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1032] <... futex resumed>) = ? [pid 1031] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1029] +++ exited with 0 +++ [pid 1028] <... exit_group resumed>) = ? [pid 1027] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1025] exit_group(0 [pid 1024] +++ exited with 0 +++ [pid 1032] +++ exited with 0 +++ [pid 1028] +++ exited with 0 +++ [pid 1033] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1025] <... exit_group resumed>) = ? [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1024, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- [pid 1027] <... futex resumed>) = ? [pid 1031] <... openat resumed>) = 7 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1028, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1027] +++ exited with 0 +++ [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1025] +++ exited with 0 +++ [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 1031] ioctl(7, LOOP_SET_FD, 6 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1025, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 1033] <... write resumed>) = 131072 [pid 1031] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1031] ioctl(7, LOOP_CLR_FD [pid 1033] munmap(0x7fe6f03b1000, 138412032 [pid 1031] <... ioctl resumed>) = 0 [pid 1033] <... munmap resumed>) = 0 [pid 1033] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 7 [pid 1033] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1033] ioctl(7, LOOP_CLR_FD) = 0 [pid 1031] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1031] close(7) = 0 [pid 1031] close(6) = 0 [pid 1031] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1026] <... futex resumed>) = 0 [pid 1031] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1026] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1031] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1026] <... futex resumed>) = 0 [pid 1031] mknod(0x20000000, 000 [pid 1026] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1031] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1031] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1026] <... futex resumed>) = 0 [pid 1031] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1026] exit_group(0) = ? [pid 1031] <... futex resumed>) = 231 [pid 1031] +++ exited with 0 +++ [pid 1026] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1026, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1033] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1033] close(7) = 0 [pid 1033] close(6) = 0 [pid 1033] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1030] <... futex resumed>) = 0 [pid 1033] <... futex resumed>) = 1 [pid 1030] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1033] mknod(0x20000000, 000 [pid 1030] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1033] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1033] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1030] <... futex resumed>) = 0 [pid 1033] <... futex resumed>) = 1 [pid 1033] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1030] exit_group(0) = ? [pid 1033] <... futex resumed>) = 231 [pid 305] <... restart_syscall resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1033] +++ exited with 0 +++ [pid 1030] +++ exited with 0 +++ [pid 305] <... openat resumed>) = 3 [pid 304] <... openat resumed>) = 3 [pid 303] <... openat resumed>) = 3 [pid 305] ioctl(3, LOOP_CLR_FD [pid 304] ioctl(3, LOOP_CLR_FD [pid 303] ioctl(3, LOOP_CLR_FD [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1030, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] <... ioctl resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 305] close(3 [pid 304] close(3 [pid 303] close(3 [pid 305] <... close resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1034 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1036 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1035 [pid 302] <... restart_syscall resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 302] ioctl(3, LOOP_CLR_FD) = 0 [pid 302] close(3) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 1037 ./strace-static-x86_64: Process 1035 attached ./strace-static-x86_64: Process 1034 attached ./strace-static-x86_64: Process 1036 attached [pid 1036] set_robust_list(0x5555636e06a0, 24) = 0 ./strace-static-x86_64: Process 1037 attached [pid 1036] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1037] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1037] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1034] set_robust_list(0x5555636e06a0, 24 [pid 1035] set_robust_list(0x5555636e06a0, 24 [pid 1036] <... prctl resumed>) = 0 [pid 1036] setpgid(0, 0) = 0 [pid 1036] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1034] <... set_robust_list resumed>) = 0 [pid 1035] <... set_robust_list resumed>) = 0 [pid 1037] <... prctl resumed>) = 0 [pid 1037] setpgid(0, 0) = 0 [pid 1037] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1036] <... openat resumed>) = 3 [pid 1037] <... openat resumed>) = 3 [pid 1036] write(3, "1000", 4) = 4 [pid 1037] write(3, "1000", 4 [pid 1036] close(3 [pid 1037] <... write resumed>) = 4 [pid 1036] <... close resumed>) = 0 executing program [pid 1036] write(1, "executing program\n", 18 [pid 1037] close(3 [pid 1036] <... write resumed>) = 18 executing program [pid 1037] <... close resumed>) = 0 [pid 1036] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1037] write(1, "executing program\n", 18) = 18 [pid 1036] <... futex resumed>) = 0 [pid 1037] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1036] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1036] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1037] <... futex resumed>) = 0 [pid 1036] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1037] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1036] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1037] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1036] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1037] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1037] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1036] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1037] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1036] <... mprotect resumed>) = 0 [pid 1037] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1034] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1035] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1036] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1036] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1034] <... prctl resumed>) = 0 [pid 1035] <... prctl resumed>) = 0 [pid 1037] <... mprotect resumed>) = 0 [pid 1037] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1036] <... clone3 resumed> => {parent_tid=[1038]}, 88) = 1038 [pid 1035] setpgid(0, 0 [pid 1036] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1036] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... restart_syscall resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1034] setpgid(0, 0 [pid 1035] <... setpgid resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1034] <... setpgid resumed>) = 0 [pid 1035] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1039 [pid 1036] <... futex resumed>) = 0 [pid 1036] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1037] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1037] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1034] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1037] <... clone3 resumed> => {parent_tid=[1040]}, 88) = 1040 [pid 1035] <... openat resumed>) = 3 [pid 1034] write(3, "1000", 4 [pid 1035] write(3, "1000", 4./strace-static-x86_64: Process 1039 attached [pid 1037] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1037] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1037] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1034] <... write resumed>) = 4 [pid 1034] close(3 [pid 1035] <... write resumed>) = 4 [pid 1039] set_robust_list(0x5555636e06a0, 24 [pid 1034] <... close resumed>) = 0 [pid 1035] close(3 [pid 1039] <... set_robust_list resumed>) = 0 [pid 1035] <... close resumed>) = 0 [pid 1034] write(1, "executing program\n", 18executing program executing program [pid 1035] write(1, "executing program\n", 18 [pid 1034] <... write resumed>) = 18 [pid 1035] <... write resumed>) = 18 [pid 1034] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1035] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1034] <... futex resumed>) = 0 [pid 1039] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1034] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1035] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1034] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1035] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1039] <... prctl resumed>) = 0 [pid 1034] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1035] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1039] setpgid(0, 0 [pid 1034] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1039] <... setpgid resumed>) = 0 [pid 1035] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1035] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1034] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1035] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1034] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1034] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1035] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1039] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1034] <... mprotect resumed>) = 0 [pid 1035] <... mprotect resumed>) = 0 [pid 1034] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1035] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1039] <... openat resumed>) = 3 [pid 1034] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1035] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1034] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1035] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0}./strace-static-x86_64: Process 1038 attached [pid 1038] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1038] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1038] memfd_create("syzkaller", 0) = 3 ./strace-static-x86_64: Process 1040 attached [pid 1040] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1040] rt_sigprocmask(SIG_SETMASK, [], [pid 1038] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1040] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1038] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1040] memfd_create("syzkaller", 0 [pid 1035] <... clone3 resumed> => {parent_tid=[1041]}, 88) = 1041 ./strace-static-x86_64: Process 1042 attached ./strace-static-x86_64: Process 1041 attached [pid 1039] write(3, "1000", 4 [pid 1034] <... clone3 resumed> => {parent_tid=[1042]}, 88) = 1042 [pid 1040] <... memfd_create resumed>) = 3 [pid 1034] rt_sigprocmask(SIG_SETMASK, [], [pid 1035] rt_sigprocmask(SIG_SETMASK, [], [pid 1042] set_robust_list(0x7fe6f87d19a0, 24 [pid 1041] set_robust_list(0x7fe6f87d19a0, 24 [pid 1039] <... write resumed>) = 4 [pid 1034] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1035] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1039] close(3 [pid 1034] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1035] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1040] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1034] <... futex resumed>) = 0 [pid 1035] <... futex resumed>) = 0 [pid 1039] <... close resumed>) = 0 [pid 1034] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1035] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1039] write(1, "executing program\n", 18 [pid 1040] <... mmap resumed>) = 0x7fe6f03b1000 executing program [pid 1039] <... write resumed>) = 18 [pid 1039] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1042] <... set_robust_list resumed>) = 0 [pid 1041] <... set_robust_list resumed>) = 0 [pid 1039] <... futex resumed>) = 0 [pid 1042] rt_sigprocmask(SIG_SETMASK, [], [pid 1041] rt_sigprocmask(SIG_SETMASK, [], [pid 1042] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1039] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1041] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1039] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1039] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1039] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1042] memfd_create("syzkaller", 0 [pid 1039] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1039] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1042] <... memfd_create resumed>) = 3 [pid 1039] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1042] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1039] <... clone3 resumed> => {parent_tid=[1043]}, 88) = 1043 [pid 1041] memfd_create("syzkaller", 0 [pid 1039] rt_sigprocmask(SIG_SETMASK, [], [pid 1042] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1039] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1039] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1038] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1039] <... futex resumed>) = 0 [pid 1039] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1041] <... memfd_create resumed>) = 3 [pid 1042] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1041] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1040] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1042] <... write resumed>) = 262144 [pid 1041] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1042] munmap(0x7fe6f03b1000, 138412032 [pid 1041] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1042] <... munmap resumed>) = 0 [pid 1038] <... write resumed>) = 262144 [pid 1041] <... write resumed>) = 262144 [pid 1038] munmap(0x7fe6f03b1000, 138412032 [pid 1042] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1041] munmap(0x7fe6f03b1000, 138412032 [pid 1042] <... openat resumed>) = 4 [pid 1038] <... munmap resumed>) = 0 [pid 1038] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 1038] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1038] ioctl(4, LOOP_CLR_FD) = 0 [pid 1042] ioctl(4, LOOP_SET_FD, 3 [pid 1041] <... munmap resumed>) = 0 [pid 1042] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1041] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1042] ioctl(4, LOOP_CLR_FD [pid 1041] <... openat resumed>) = 4 [pid 1042] <... ioctl resumed>) = 0 [pid 1041] ioctl(4, LOOP_SET_FD, 3 [pid 1038] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1038] close(4) = 0 [pid 1038] close(3 [pid 1041] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1041] ioctl(4, LOOP_CLR_FD) = 0 [pid 1038] <... close resumed>) = 0 [pid 1040] <... write resumed>) = 262144 [pid 1042] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1042] close(4) = 0 [pid 1042] close(3 [pid 1040] munmap(0x7fe6f03b1000, 138412032 [pid 1038] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1043 attached [pid 1042] <... close resumed>) = 0 [pid 1042] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1034] <... futex resumed>) = 0 [pid 1034] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1034] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1042] <... futex resumed>) = 1 [pid 1042] chdir("./file0" [pid 1041] ioctl(4, LOOP_SET_FD, 3 [pid 1042] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1041] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1041] close(4 [pid 1042] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1041] <... close resumed>) = 0 [pid 1034] <... futex resumed>) = 0 [pid 1034] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1034] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1042] <... futex resumed>) = 1 [pid 1042] creat("./bus", 000 [pid 1041] close(3 [pid 1042] <... creat resumed>) = 3 [pid 1041] <... close resumed>) = 0 [pid 1042] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1034] <... futex resumed>) = 0 [pid 1034] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1034] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1042] <... futex resumed>) = 1 [pid 1042] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 1042] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1034] <... futex resumed>) = 0 [pid 1034] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1034] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1042] <... futex resumed>) = 1 [pid 1042] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1041] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1035] <... futex resumed>) = 0 [pid 1035] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1035] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1041] <... futex resumed>) = 1 [pid 1041] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 1041] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1035] <... futex resumed>) = 0 [pid 1035] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1035] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1041] <... futex resumed>) = 1 [pid 1041] creat("./bus", 000) = 3 [pid 1041] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1035] <... futex resumed>) = 0 [pid 1035] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1035] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1041] <... futex resumed>) = 1 [pid 1041] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 1041] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1035] <... futex resumed>) = 0 [pid 1035] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1035] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1041] <... futex resumed>) = 1 [pid 1041] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1040] <... munmap resumed>) = 0 [pid 1038] <... futex resumed>) = 1 [pid 1036] <... futex resumed>) = 0 [pid 1043] set_robust_list(0x7fe6f87d19a0, 24 [pid 1040] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1043] <... set_robust_list resumed>) = 0 [pid 1038] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1036] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1043] rt_sigprocmask(SIG_SETMASK, [], [pid 1040] <... openat resumed>) = 4 [pid 1038] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1036] <... futex resumed>) = 0 [pid 1043] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1040] ioctl(4, LOOP_SET_FD, 3 [pid 1038] chdir("./file0" [pid 1036] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1042] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1038] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1040] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1043] memfd_create("syzkaller", 0 [pid 1040] ioctl(4, LOOP_CLR_FD [pid 1038] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1043] <... memfd_create resumed>) = 3 [pid 1040] <... ioctl resumed>) = 0 [pid 1043] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1042] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1038] <... futex resumed>) = 1 [pid 1036] <... futex resumed>) = 0 [pid 1043] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1042] <... futex resumed>) = 1 [pid 1038] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1036] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1034] <... futex resumed>) = 0 [pid 1042] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1038] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1036] <... futex resumed>) = 0 [pid 1034] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1042] <... open resumed>) = 5 [pid 1038] creat("./bus", 000 [pid 1036] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1034] <... futex resumed>) = 0 [pid 1042] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1041] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1038] <... creat resumed>) = 3 [pid 1034] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1042] <... futex resumed>) = 0 [pid 1041] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1034] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1042] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1041] <... futex resumed>) = 1 [pid 1034] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1035] <... futex resumed>) = 0 [pid 1043] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1042] <... mmap resumed>) = 0x20000000 [pid 1041] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1038] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1034] <... futex resumed>) = 0 [pid 1035] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1042] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1041] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1040] ioctl(4, LOOP_SET_FD, 3 [pid 1038] <... futex resumed>) = 1 [pid 1036] <... futex resumed>) = 0 [pid 1034] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1035] <... futex resumed>) = 0 [pid 1042] <... futex resumed>) = 0 [pid 1041] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1040] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1038] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1036] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1034] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1035] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1043] <... write resumed>) = 262144 [pid 1042] memfd_create("syzkaller", 0 [pid 1041] <... open resumed>) = 5 [pid 1040] close(4 [pid 1038] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1036] <... futex resumed>) = 0 [pid 1034] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1043] munmap(0x7fe6f03b1000, 138412032 [pid 1042] <... memfd_create resumed>) = 6 [pid 1041] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1040] <... close resumed>) = 0 [pid 1038] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1036] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1034] <... futex resumed>) = 0 [pid 1042] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1041] <... futex resumed>) = 1 [pid 1040] close(3 [pid 1038] <... openat resumed>) = 4 [pid 1034] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1035] <... futex resumed>) = 0 [pid 1043] <... munmap resumed>) = 0 [pid 1042] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1041] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1035] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1043] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1042] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1041] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1040] <... close resumed>) = 0 [pid 1038] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1035] <... futex resumed>) = 0 [pid 1043] <... openat resumed>) = 4 [pid 1042] <... write resumed>) = 131072 [pid 1041] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1040] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1038] <... futex resumed>) = 1 [pid 1036] <... futex resumed>) = 0 [pid 1035] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1043] ioctl(4, LOOP_SET_FD, 3 [pid 1042] munmap(0x7fe6f03b1000, 138412032 [pid 1041] <... mmap resumed>) = 0x20000000 [pid 1040] <... futex resumed>) = 1 [pid 1038] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1037] <... futex resumed>) = 0 [pid 1036] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1043] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1040] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1038] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1037] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1036] <... futex resumed>) = 0 [pid 1043] ioctl(4, LOOP_CLR_FD [pid 1040] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1038] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1037] <... futex resumed>) = 0 [pid 1036] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1043] <... ioctl resumed>) = 0 [pid 1040] chdir("./file0" [pid 1037] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1040] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1042] <... munmap resumed>) = 0 [pid 1041] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1040] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1038] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1042] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1041] <... futex resumed>) = 1 [pid 1040] <... futex resumed>) = 1 [pid 1038] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1037] <... futex resumed>) = 0 [pid 1035] <... futex resumed>) = 0 [pid 1042] <... openat resumed>) = 7 [pid 1041] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1035] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1042] ioctl(7, LOOP_SET_FD, 6 [pid 1041] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1035] <... futex resumed>) = 0 [pid 1042] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1041] memfd_create("syzkaller", 0 [pid 1035] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1042] ioctl(7, LOOP_CLR_FD [pid 1041] <... memfd_create resumed>) = 6 [pid 1042] <... ioctl resumed>) = 0 [pid 1041] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1041] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1040] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1038] <... futex resumed>) = 1 [pid 1037] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1036] <... futex resumed>) = 0 [pid 1043] ioctl(4, LOOP_SET_FD, 3 [pid 1041] <... write resumed>) = 131072 [pid 1040] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1038] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1037] <... futex resumed>) = 0 [pid 1036] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1043] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1041] munmap(0x7fe6f03b1000, 138412032 [pid 1040] creat("./bus", 000 [pid 1038] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1037] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1036] <... futex resumed>) = 0 [pid 1043] close(4 [pid 1042] ioctl(7, LOOP_SET_FD, 6 [pid 1041] <... munmap resumed>) = 0 [pid 1040] <... creat resumed>) = 3 [pid 1038] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1036] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1043] <... close resumed>) = 0 [pid 1042] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1041] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1040] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1038] <... open resumed>) = 5 [pid 1043] close(3 [pid 1042] close(7 [pid 1041] <... openat resumed>) = 7 [pid 1040] <... futex resumed>) = 1 [pid 1037] <... futex resumed>) = 0 [pid 1038] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1042] <... close resumed>) = 0 [pid 1041] ioctl(7, LOOP_SET_FD, 6 [pid 1043] <... close resumed>) = 0 [pid 1042] close(6 [pid 1041] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1040] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1038] <... futex resumed>) = 1 [pid 1037] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1036] <... futex resumed>) = 0 [pid 1042] <... close resumed>) = 0 [pid 1041] ioctl(7, LOOP_CLR_FD [pid 1042] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1041] <... ioctl resumed>) = 0 [pid 1042] <... futex resumed>) = 1 [pid 1034] <... futex resumed>) = 0 [pid 1042] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1034] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1042] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1034] <... futex resumed>) = 0 [pid 1042] mknod(0x20000000, 000 [pid 1034] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1042] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1042] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1041] ioctl(7, LOOP_SET_FD, 6 [pid 1042] <... futex resumed>) = 1 [pid 1043] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1041] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1040] <... openat resumed>) = 4 [pid 1038] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1037] <... futex resumed>) = 0 [pid 1036] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1034] <... futex resumed>) = 0 [pid 1043] <... futex resumed>) = 1 [pid 1042] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1041] close(7 [pid 1040] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1039] <... futex resumed>) = 0 [pid 1038] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1037] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1036] <... futex resumed>) = 0 [pid 1034] exit_group(0 [pid 1043] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1042] <... futex resumed>) = ? [pid 1041] <... close resumed>) = 0 [pid 1040] <... futex resumed>) = 0 [pid 1039] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1038] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1037] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1036] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1034] <... exit_group resumed>) = ? [pid 1043] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1042] +++ exited with 0 +++ [pid 1041] close(6 [pid 1040] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1039] <... futex resumed>) = 0 [pid 1038] <... mmap resumed>) = 0x20000000 [pid 1037] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1034] +++ exited with 0 +++ [pid 1043] chdir("./file0" [pid 1041] <... close resumed>) = 0 [pid 1040] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1039] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1038] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1037] <... futex resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1034, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1043] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1041] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1040] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1038] <... futex resumed>) = 1 [pid 1037] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1036] <... futex resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1043] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1041] <... futex resumed>) = 1 [pid 1038] memfd_create("syzkaller", 0 [pid 1036] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1035] <... futex resumed>) = 0 [pid 1043] <... futex resumed>) = 1 [pid 1041] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1039] <... futex resumed>) = 0 [pid 1038] <... memfd_create resumed>) = 6 [pid 1036] <... futex resumed>) = 0 [pid 1035] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1043] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1041] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1039] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1038] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1036] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1035] <... futex resumed>) = 0 [pid 1043] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1041] mknod(0x20000000, 000 [pid 1039] <... futex resumed>) = 0 [pid 1038] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1035] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... restart_syscall resumed>) = 0 [pid 1043] creat("./bus", 000 [pid 1041] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1039] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1041] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1035] <... futex resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1043] <... creat resumed>) = 3 [pid 1041] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1038] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1035] exit_group(0 [pid 305] <... openat resumed>) = 3 [pid 1043] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1041] <... futex resumed>) = ? [pid 1035] <... exit_group resumed>) = ? [pid 305] ioctl(3, LOOP_CLR_FD [pid 1043] <... futex resumed>) = 1 [pid 1041] +++ exited with 0 +++ [pid 1040] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1039] <... futex resumed>) = 0 [pid 1038] <... write resumed>) = 131072 [pid 1035] +++ exited with 0 +++ [pid 305] <... ioctl resumed>) = 0 [pid 1043] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1040] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1039] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1038] munmap(0x7fe6f03b1000, 138412032 [pid 305] close(3 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1035, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1043] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1040] <... futex resumed>) = 1 [pid 1039] <... futex resumed>) = 0 [pid 1038] <... munmap resumed>) = 0 [pid 1037] <... futex resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1043] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1040] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1039] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1038] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1037] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1043] <... openat resumed>) = 4 [pid 1040] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1038] <... openat resumed>) = 7 [pid 1037] <... futex resumed>) = 0 [pid 1043] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1040] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1038] ioctl(7, LOOP_SET_FD, 6 [pid 1037] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1044 [pid 1043] <... futex resumed>) = 1 [pid 1040] <... open resumed>) = 5 [pid 1039] <... futex resumed>) = 0 [pid 1038] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1043] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1040] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1039] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1038] ioctl(7, LOOP_CLR_FD [pid 1043] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1040] <... futex resumed>) = 1 [pid 1039] <... futex resumed>) = 0 [pid 1038] <... ioctl resumed>) = 0 [pid 1037] <... futex resumed>) = 0 [pid 1043] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1040] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1039] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1037] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1040] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1037] <... futex resumed>) = 0 [pid 1040] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1037] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1040] <... mmap resumed>) = 0x20000000 [pid 1040] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1037] <... futex resumed>) = 0 [pid 1040] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1037] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1040] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1037] <... futex resumed>) = 0 [pid 1040] memfd_create("syzkaller", 0 [pid 1037] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1040] <... memfd_create resumed>) = 6 [pid 1040] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1038] ioctl(7, LOOP_SET_FD, 6 [pid 1040] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1038] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1040] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1038] close(7 [pid 1040] <... write resumed>) = 131072 [pid 1038] <... close resumed>) = 0 [pid 1040] munmap(0x7fe6f03b1000, 138412032 [pid 1038] close(6 [pid 1040] <... munmap resumed>) = 0 [pid 1040] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1038] <... close resumed>) = 0 [pid 1040] <... openat resumed>) = 7 [pid 1038] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1040] ioctl(7, LOOP_SET_FD, 6 [pid 1038] <... futex resumed>) = 1 [pid 1036] <... futex resumed>) = 0 [pid 1040] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1038] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1040] ioctl(7, LOOP_CLR_FD [pid 1036] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1040] <... ioctl resumed>) = 0 [pid 1038] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1036] <... futex resumed>) = 0 [pid 1038] mknod(0x20000000, 000 [pid 1036] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1038] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1038] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1036] <... futex resumed>) = 0 [pid 1038] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1043] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1036] exit_group(0 [pid 1043] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1038] <... futex resumed>) = ? [pid 1036] <... exit_group resumed>) = ? [pid 1043] <... futex resumed>) = 1 [pid 1039] <... futex resumed>) = 0 [pid 1039] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1039] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1043] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1038] +++ exited with 0 +++ [pid 1036] +++ exited with 0 +++ [pid 303] <... restart_syscall resumed>) = 0 [pid 1043] <... open resumed>) = 5 [pid 1040] ioctl(7, LOOP_SET_FD, 6 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1036, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1043] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1040] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 1043] <... futex resumed>) = 1 [pid 1040] close(7 [pid 1039] <... futex resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1043] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1040] <... close resumed>) = 0 [pid 1039] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... openat resumed>) = 3 [pid 1043] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1040] close(6 [pid 1039] <... futex resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 303] ioctl(3, LOOP_CLR_FD [pid 1043] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1040] <... close resumed>) = 0 [pid 1039] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... ioctl resumed>) = 0 [pid 1043] <... mmap resumed>) = 0x20000000 [pid 1040] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] close(3 [pid 1043] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1040] <... futex resumed>) = 1 [pid 1037] <... futex resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 303] <... close resumed>) = 0 [pid 1043] <... futex resumed>) = 1 [pid 1040] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1039] <... futex resumed>) = 0 [pid 1037] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... openat resumed>) = 3 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1043] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1040] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1039] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1037] <... futex resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 1044 attached [pid 1043] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1040] mknod(0x20000000, 000 [pid 1039] <... futex resumed>) = 0 [pid 1037] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... ioctl resumed>) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1045 [pid 1044] set_robust_list(0x5555636e06a0, 24 [pid 1043] memfd_create("syzkaller", 0 [pid 1040] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1039] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 304] close(3 [pid 1044] <... set_robust_list resumed>) = 0 [pid 1043] <... memfd_create resumed>) = 6 [pid 1040] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1044] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1043] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1040] <... futex resumed>) = 1 [pid 1037] <... futex resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 1044] <... prctl resumed>) = 0 [pid 1043] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1040] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1037] exit_group(0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1045 attached [pid 1045] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1045] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1043] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1040] <... futex resumed>) = ? [pid 1037] <... exit_group resumed>) = ? [pid 1045] setpgid(0, 0) = 0 [pid 1045] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1040] +++ exited with 0 +++ [pid 1037] +++ exited with 0 +++ [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1046 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1037, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 1043] <... write resumed>) = 131072 [pid 1044] setpgid(0, 0 [pid 1043] munmap(0x7fe6f03b1000, 138412032 [pid 1045] <... openat resumed>) = 3 [pid 1044] <... setpgid resumed>) = 0 [pid 1043] <... munmap resumed>) = 0 [pid 1043] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1044] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1043] <... openat resumed>) = 7 [pid 1044] <... openat resumed>) = 3 [pid 1043] ioctl(7, LOOP_SET_FD, 6 [pid 1044] write(3, "1000", 4 [pid 1043] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1044] <... write resumed>) = 4 [pid 1043] ioctl(7, LOOP_CLR_FD [pid 1044] close(3 [pid 1043] <... ioctl resumed>) = 0 [pid 1044] <... close resumed>) = 0 [pid 1044] write(1, "executing program\n", 18 [pid 1045] write(3, "1000", 4) = 4 [pid 1045] close(3) = 0 executing program [pid 1044] <... write resumed>) = 18 [pid 1043] ioctl(7, LOOP_SET_FD, 6 [pid 1044] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1043] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 302] <... restart_syscall resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 302] ioctl(3, LOOP_CLR_FD) = 0 [pid 302] close(3) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 1047 [pid 1045] write(1, "executing program\n", 18executing program ) = 18 [pid 1045] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1043] close(7) = 0 [pid 1043] close(6 [pid 1045] <... futex resumed>) = 0 [pid 1045] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1043] <... close resumed>) = 0 [pid 1043] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1039] <... futex resumed>) = 0 [pid 1043] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1039] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1043] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1039] <... futex resumed>) = 0 [pid 1043] mknod(0x20000000, 000 [pid 1039] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1043] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1043] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1045] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1044] <... futex resumed>) = 0 [pid 1043] <... futex resumed>) = 1 [pid 1039] <... futex resumed>) = 0 [pid 1044] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1043] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1039] exit_group(0 [pid 1044] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1043] <... futex resumed>) = ? [pid 1039] <... exit_group resumed>) = ? [pid 1045] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1044] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1043] +++ exited with 0 +++ [pid 1039] +++ exited with 0 +++ [pid 1044] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1044] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1039, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1044] <... mmap resumed>) = 0x7fe6f87b1000 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 1044] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1045] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1044] <... mprotect resumed>) = 0 [pid 1045] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1044] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1045] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1044] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1045] <... mprotect resumed>) = 0 [pid 1044] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1045] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1044] <... clone3 resumed> => {parent_tid=[1048]}, 88) = 1048 [pid 1045] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1044] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1045] <... clone3 resumed> => {parent_tid=[1049]}, 88) = 1049 [pid 1044] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1045] rt_sigprocmask(SIG_SETMASK, [], [pid 1044] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1047 attached [pid 1045] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1044] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1047] set_robust_list(0x5555636e06a0, 24 [pid 1045] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1045] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1046 attached [pid 1046] set_robust_list(0x5555636e06a0, 24 [pid 1047] <... set_robust_list resumed>) = 0 [pid 1046] <... set_robust_list resumed>) = 0 [pid 1047] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1046] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1047] <... prctl resumed>) = 0 [pid 1046] <... prctl resumed>) = 0 [pid 1047] setpgid(0, 0 [pid 1046] setpgid(0, 0 [pid 1047] <... setpgid resumed>) = 0 [pid 1046] <... setpgid resumed>) = 0 [pid 1046] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECexecuting program ) = 3 [pid 1046] write(3, "1000", 4) = 4 [pid 1046] close(3) = 0 [pid 1046] write(1, "executing program\n", 18) = 18 [pid 1046] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1046] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1046] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1046] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1046] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1046] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1046] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[1050]}, 88) = 1050 [pid 1046] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1046] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1046] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1049 attached [pid 1049] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1049] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1049] memfd_create("syzkaller", 0) = 3 [pid 306] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 1050 attached ./strace-static-x86_64: Process 1048 attached [pid 1047] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1050] set_robust_list(0x7fe6f87d19a0, 24 [pid 1048] set_robust_list(0x7fe6f87d19a0, 24 [pid 1047] <... openat resumed>) = 3 [pid 1048] <... set_robust_list resumed>) = 0 [pid 1047] write(3, "1000", 4 [pid 1050] <... set_robust_list resumed>) = 0 [pid 1048] rt_sigprocmask(SIG_SETMASK, [], [pid 1047] <... write resumed>) = 4 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1050] rt_sigprocmask(SIG_SETMASK, [], [pid 1048] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1047] close(3 [pid 306] <... openat resumed>) = 3 executing program [pid 1050] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1049] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1048] memfd_create("syzkaller", 0 [pid 1047] <... close resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 1049] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1048] <... memfd_create resumed>) = 3 [pid 1047] write(1, "executing program\n", 18 [pid 306] <... ioctl resumed>) = 0 [pid 1050] memfd_create("syzkaller", 0 [pid 1048] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1047] <... write resumed>) = 18 [pid 306] close(3 [pid 1048] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1047] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... close resumed>) = 0 [pid 1047] <... futex resumed>) = 0 [pid 1047] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1047] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1047] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1051 [pid 1047] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1047] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1050] <... memfd_create resumed>) = 3 [pid 1049] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1048] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1047] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1047] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1050] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1049] <... write resumed>) = 262144 [pid 1048] <... write resumed>) = 262144 [pid 1050] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1048] munmap(0x7fe6f03b1000, 138412032 [pid 1047] <... clone3 resumed> => {parent_tid=[1052]}, 88) = 1052 [pid 1047] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1047] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1048] <... munmap resumed>) = 0 [pid 1047] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1048] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1049] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1049] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 1049] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1050] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1048] <... openat resumed>) = 4 [pid 1048] ioctl(4, LOOP_SET_FD, 3 [pid 1049] ioctl(4, LOOP_CLR_FD) = 0 [pid 1050] <... write resumed>) = 262144 [pid 1048] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1050] munmap(0x7fe6f03b1000, 138412032 [pid 1048] ioctl(4, LOOP_CLR_FD) = 0 [pid 1050] <... munmap resumed>) = 0 [pid 1050] openat(AT_FDCWD, "/dev/loop2", O_RDWR./strace-static-x86_64: Process 1052 attached [pid 1052] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1052] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ./strace-static-x86_64: Process 1051 attached [pid 1050] <... openat resumed>) = 4 [pid 1048] ioctl(4, LOOP_SET_FD, 3 [pid 1051] set_robust_list(0x5555636e06a0, 24 [pid 1050] ioctl(4, LOOP_SET_FD, 3 [pid 1048] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1051] <... set_robust_list resumed>) = 0 [pid 1050] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1048] close(4) = 0 [pid 1050] ioctl(4, LOOP_CLR_FD [pid 1048] close(3 [pid 1049] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1049] close(4) = 0 [pid 1049] close(3 [pid 1051] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1050] <... ioctl resumed>) = 0 [pid 1049] <... close resumed>) = 0 [pid 1048] <... close resumed>) = 0 [pid 1051] <... prctl resumed>) = 0 [pid 1048] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1049] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1051] setpgid(0, 0 [pid 1048] <... futex resumed>) = 1 [pid 1044] <... futex resumed>) = 0 [pid 1051] <... setpgid resumed>) = 0 [pid 1049] <... futex resumed>) = 1 [pid 1048] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1045] <... futex resumed>) = 0 [pid 1044] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1051] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1049] chdir("./file0" [pid 1048] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1045] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1044] <... futex resumed>) = 0 [pid 1051] <... openat resumed>) = 3 [pid 1049] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1048] chdir("./file0" [pid 1045] <... futex resumed>) = 0 [pid 1044] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1051] write(3, "1000", 4 [pid 1049] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1048] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1045] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1052] memfd_create("syzkaller", 0 [pid 1051] <... write resumed>) = 4 [pid 1050] ioctl(4, LOOP_SET_FD, 3 [pid 1049] <... futex resumed>) = 0 [pid 1048] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1045] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1052] <... memfd_create resumed>) = 3 [pid 1051] close(3 [pid 1050] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1049] creat("./bus", 000 [pid 1048] <... futex resumed>) = 1 [pid 1045] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1044] <... futex resumed>) = 0 [pid 1052] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1051] <... close resumed>) = 0 [pid 1050] close(4 [pid 1049] <... creat resumed>) = 3 [pid 1048] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1045] <... futex resumed>) = 0 [pid 1044] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 1052] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1051] write(1, "executing program\n", 18 [pid 1050] <... close resumed>) = 0 [pid 1049] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1048] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1045] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1044] <... futex resumed>) = 0 [pid 1051] <... write resumed>) = 18 [pid 1050] close(3 [pid 1049] <... futex resumed>) = 0 [pid 1048] creat("./bus", 000 [pid 1045] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1049] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1045] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1049] <... openat resumed>) = 4 [pid 1045] <... futex resumed>) = 0 [pid 1049] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1045] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1049] <... futex resumed>) = 0 [pid 1045] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1049] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1045] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1052] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1045] <... futex resumed>) = 0 [pid 1045] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1044] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1048] <... creat resumed>) = 3 [pid 1051] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1050] <... close resumed>) = 0 [pid 1049] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1048] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1051] <... futex resumed>) = 0 [pid 1050] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1048] <... futex resumed>) = 1 [pid 1051] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1050] <... futex resumed>) = 1 [pid 1049] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1048] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1046] <... futex resumed>) = 0 [pid 1044] <... futex resumed>) = 0 [pid 1051] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1050] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1049] <... futex resumed>) = 1 [pid 1046] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1045] <... futex resumed>) = 0 [pid 1044] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1051] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1050] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1049] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1046] <... futex resumed>) = 0 [pid 1045] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1044] <... futex resumed>) = 1 [pid 1048] <... futex resumed>) = 0 [pid 1052] <... write resumed>) = 262144 [pid 1051] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1050] chdir("./file0" [pid 1049] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1048] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1046] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1045] <... futex resumed>) = 0 [pid 1044] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1052] munmap(0x7fe6f03b1000, 138412032 [pid 1051] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1050] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1049] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1048] <... openat resumed>) = 4 [pid 1045] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1052] <... munmap resumed>) = 0 [pid 1051] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1050] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1049] <... open resumed>) = 5 [pid 1048] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1052] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1051] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1050] <... futex resumed>) = 1 [pid 1049] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1046] <... futex resumed>) = 0 [pid 1052] <... openat resumed>) = 4 [pid 1051] <... mprotect resumed>) = 0 [pid 1050] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1049] <... futex resumed>) = 1 [pid 1048] <... futex resumed>) = 1 [pid 1046] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1045] <... futex resumed>) = 0 [pid 1044] <... futex resumed>) = 0 [pid 1052] ioctl(4, LOOP_SET_FD, 3 [pid 1051] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1050] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1049] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1048] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1046] <... futex resumed>) = 0 [pid 1045] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1044] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1052] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1051] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1050] creat("./bus", 000 [pid 1049] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1048] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1046] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1045] <... futex resumed>) = 0 [pid 1044] <... futex resumed>) = 0 [pid 1052] ioctl(4, LOOP_CLR_FD [pid 1051] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1050] <... creat resumed>) = 3 [pid 1049] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1048] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1045] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1044] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1052] <... ioctl resumed>) = 0 [pid 1050] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1049] <... mmap resumed>) = 0x20000000 [pid 1048] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1051] <... clone3 resumed> => {parent_tid=[1053]}, 88) = 1053 [pid 1050] <... futex resumed>) = 1 [pid 1049] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1048] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1046] <... futex resumed>) = 0 [pid 1051] rt_sigprocmask(SIG_SETMASK, [], [pid 1050] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1049] <... futex resumed>) = 1 [pid 1048] <... futex resumed>) = 1 [pid 1046] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1045] <... futex resumed>) = 0 [pid 1044] <... futex resumed>) = 0 [pid 1051] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1050] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1049] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1048] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1046] <... futex resumed>) = 0 [pid 1045] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1049] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1046] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1045] <... futex resumed>) = 0 [pid 1052] ioctl(4, LOOP_SET_FD, 3 [pid 1049] memfd_create("syzkaller", 0 [pid 1045] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1052] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1049] <... memfd_create resumed>) = 6 [pid 1052] close(4 [pid 1049] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1052] <... close resumed>) = 0 [pid 1049] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1052] close(3 [pid 1051] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1050] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1049] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1048] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1044] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1052] <... close resumed>) = 0 [pid 1051] <... futex resumed>) = 0 [pid 1050] <... openat resumed>) = 4 [pid 1049] <... write resumed>) = 131072 [pid 1048] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1044] <... futex resumed>) = 0 [pid 1052] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1051] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1050] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1049] munmap(0x7fe6f03b1000, 138412032 [pid 1048] <... open resumed>) = 5 [pid 1044] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1052] <... futex resumed>) = 1 [pid 1050] <... futex resumed>) = 1 [pid 1049] <... munmap resumed>) = 0 [pid 1048] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1047] <... futex resumed>) = 0 [pid 1046] <... futex resumed>) = 0 [pid 1044] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1052] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1050] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1049] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1048] <... futex resumed>) = 0 [pid 1047] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1046] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1044] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1052] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1050] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1049] <... openat resumed>) = 7 [pid 1048] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1047] <... futex resumed>) = 0 [pid 1046] <... futex resumed>) = 0 [pid 1044] <... futex resumed>) = 0 [pid 1052] chdir("./file0" [pid 1050] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1049] ioctl(7, LOOP_SET_FD, 6 [pid 1046] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1052] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1050] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1049] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1048] <... mmap resumed>) = 0x20000000 [pid 1047] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1044] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1052] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1050] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1049] ioctl(7, LOOP_CLR_FD [pid 1052] <... futex resumed>) = 0 [pid 1049] <... ioctl resumed>) = 0 [pid 1052] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1049] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1049] close(7) = 0 [pid 1049] close(6) = 0 [pid 1049] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1045] <... futex resumed>) = 0 [pid 1049] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1045] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1049] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1045] <... futex resumed>) = 0 [pid 1050] <... futex resumed>) = 1 [pid 1049] mknod(0x20000000, 000 [pid 1048] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1047] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1046] <... futex resumed>) = 0 [pid 1045] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1050] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1049] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1048] <... futex resumed>) = 1 [pid 1047] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1046] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1044] <... futex resumed>) = 0 [pid 1052] <... futex resumed>) = 0 [pid 1050] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1049] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1048] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1047] <... futex resumed>) = 1 [pid 1046] <... futex resumed>) = 0 [pid 1044] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1052] creat("./bus", 000 [pid 1050] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1049] <... futex resumed>) = 1 [pid 1048] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1047] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1046] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1045] <... futex resumed>) = 0 [pid 1044] <... futex resumed>) = 0 [pid 1052] <... creat resumed>) = 3 [pid 1050] <... open resumed>) = 5 [pid 1049] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1048] memfd_create("syzkaller", 0 [pid 1045] exit_group(0 [pid 1044] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1052] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1050] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1049] <... futex resumed>) = ? [pid 1048] <... memfd_create resumed>) = 6 [pid 1045] <... exit_group resumed>) = ? [pid 1052] <... futex resumed>) = 1 [pid 1050] <... futex resumed>) = 1 [pid 1049] +++ exited with 0 +++ [pid 1048] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1047] <... futex resumed>) = 0 [pid 1046] <... futex resumed>) = 0 [pid 1045] +++ exited with 0 +++ [pid 1052] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1050] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1048] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1047] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1046] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1045, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 1052] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1050] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1047] <... futex resumed>) = 0 [pid 1046] <... futex resumed>) = 0 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1052] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1047] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1046] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1052] <... openat resumed>) = 4 [pid 1052] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1050] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1048] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1047] <... futex resumed>) = 0 [pid 1052] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1050] <... mmap resumed>) = 0x20000000 [pid 1047] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1052] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1047] <... futex resumed>) = 0 [pid 1052] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1047] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1052] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1050] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1048] <... write resumed>) = 131072 [pid 1052] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1050] <... futex resumed>) = 1 [pid 1048] munmap(0x7fe6f03b1000, 138412032 [pid 1046] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1053 attached [pid 1052] <... futex resumed>) = 1 [pid 1050] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1047] <... futex resumed>) = 0 [pid 1046] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1053] set_robust_list(0x7fe6f87d19a0, 24 [pid 1052] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1050] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1048] <... munmap resumed>) = 0 [pid 1047] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1046] <... futex resumed>) = 0 [pid 1053] <... set_robust_list resumed>) = 0 [pid 1052] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1050] memfd_create("syzkaller", 0 [pid 1048] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1047] <... futex resumed>) = 0 [pid 1046] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1053] rt_sigprocmask(SIG_SETMASK, [], [pid 1052] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1050] <... memfd_create resumed>) = 6 [pid 1048] <... openat resumed>) = 7 [pid 1047] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1053] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1052] <... open resumed>) = 5 [pid 1050] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1048] ioctl(7, LOOP_SET_FD, 6 [pid 1052] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1050] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1052] <... futex resumed>) = 1 [pid 1048] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1047] <... futex resumed>) = 0 [pid 1052] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1047] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1052] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1047] <... futex resumed>) = 0 [pid 1052] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1047] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1052] <... mmap resumed>) = 0x20000000 [pid 1052] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1047] <... futex resumed>) = 0 [pid 1052] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1050] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1048] ioctl(7, LOOP_CLR_FD [pid 1047] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1052] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1047] <... futex resumed>) = 0 [pid 1052] memfd_create("syzkaller", 0 [pid 1050] <... write resumed>) = 131072 [pid 1048] <... ioctl resumed>) = 0 [pid 1047] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1052] <... memfd_create resumed>) = 6 [pid 1050] munmap(0x7fe6f03b1000, 138412032 [pid 1052] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1053] memfd_create("syzkaller", 0 [pid 1052] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1050] <... munmap resumed>) = 0 [pid 1053] <... memfd_create resumed>) = 3 [pid 1052] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1050] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1052] <... write resumed>) = 131072 [pid 1050] <... openat resumed>) = 7 [pid 1053] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1052] munmap(0x7fe6f03b1000, 138412032 [pid 1050] ioctl(7, LOOP_SET_FD, 6 [pid 1048] ioctl(7, LOOP_SET_FD, 6 [pid 1052] <... munmap resumed>) = 0 [pid 1050] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1048] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] <... restart_syscall resumed>) = 0 [pid 1052] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1050] ioctl(7, LOOP_CLR_FD [pid 1048] close(7 [pid 1053] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1052] <... openat resumed>) = 7 [pid 1050] <... ioctl resumed>) = 0 [pid 1048] <... close resumed>) = 0 [pid 1052] ioctl(7, LOOP_SET_FD, 6 [pid 1048] close(6 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1052] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] <... openat resumed>) = 3 [pid 1052] ioctl(7, LOOP_CLR_FD [pid 303] ioctl(3, LOOP_CLR_FD [pid 1052] <... ioctl resumed>) = 0 [pid 1048] <... close resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 1048] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] close(3 [pid 1048] <... futex resumed>) = 1 [pid 1044] <... futex resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 1048] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1044] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1048] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1044] <... futex resumed>) = 0 [pid 1050] ioctl(7, LOOP_SET_FD, 6 [pid 1048] mknod(0x20000000, 000 [pid 1044] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1054 [pid 1050] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1048] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1052] ioctl(7, LOOP_SET_FD, 6 [pid 1050] close(7 [pid 1048] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1052] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1050] <... close resumed>) = 0 [pid 1048] <... futex resumed>) = 1 [pid 1044] <... futex resumed>) = 0 [pid 1052] close(7 [pid 1050] close(6 [pid 1052] <... close resumed>) = 0 [pid 1050] <... close resumed>) = 0 [pid 1052] close(6 [pid 1050] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1052] <... close resumed>) = 0 [pid 1050] <... futex resumed>) = 1 [pid 1046] <... futex resumed>) = 0 [pid 1052] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1050] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1046] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1052] <... futex resumed>) = 1 [pid 1050] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1047] <... futex resumed>) = 0 [pid 1046] <... futex resumed>) = 0 [pid 1052] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1050] mknod(0x20000000, 000 [pid 1047] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1046] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1044] exit_group(0 [pid 1048] ????( [pid 1052] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1050] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1047] <... futex resumed>) = 0 [pid 1048] <... ???? resumed>) = ? [pid 1044] <... exit_group resumed>) = ? [pid 1053] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1052] mknod(0x20000000, 000 [pid 1050] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1048] +++ exited with 0 +++ [pid 1047] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1052] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1050] <... futex resumed>) = 1 [pid 1046] <... futex resumed>) = 0 [pid 1052] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1050] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1046] exit_group(0 [pid 1044] +++ exited with 0 +++ [pid 1052] <... futex resumed>) = 1 [pid 1050] <... futex resumed>) = ? [pid 1047] <... futex resumed>) = 0 [pid 1046] <... exit_group resumed>) = ? [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1044, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1053] <... write resumed>) = 262144 [pid 1052] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1050] +++ exited with 0 +++ [pid 1047] exit_group(0 [pid 1046] +++ exited with 0 +++ [pid 1052] <... futex resumed>) = ? [pid 1047] <... exit_group resumed>) = ? [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1046, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1053] munmap(0x7fe6f03b1000, 138412032 [pid 1052] +++ exited with 0 +++ [pid 1047] +++ exited with 0 +++ [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 304] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 1054 attached [pid 305] <... openat resumed>) = 3 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1047, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1054] set_robust_list(0x5555636e06a0, 24 [pid 1053] <... munmap resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 1054] <... set_robust_list resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 1054] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 305] close(3 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1054] <... prctl resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 1054] setpgid(0, 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 302] ioctl(3, LOOP_CLR_FD [pid 1054] <... setpgid resumed>) = 0 [pid 1053] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 302] <... ioctl resumed>) = 0 [pid 1054] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1055 [pid 302] close(3 [pid 1054] <... openat resumed>) = 3 [pid 302] <... close resumed>) = 0 [pid 1054] write(3, "1000", 4 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program [pid 1054] <... write resumed>) = 4 [pid 1054] close(3 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1056 [pid 1054] <... close resumed>) = 0 [pid 1054] write(1, "executing program\n", 18) = 18 [pid 1054] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1054] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1054] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1054] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1054] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1054] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1054] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1053] <... openat resumed>) = 4 [pid 1054] <... clone3 resumed> => {parent_tid=[1057]}, 88) = 1057 [pid 1053] ioctl(4, LOOP_SET_FD, 3 [pid 1054] rt_sigprocmask(SIG_SETMASK, [], [pid 1053] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1054] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1053] ioctl(4, LOOP_CLR_FD [pid 1054] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1053] <... ioctl resumed>) = 0 [pid 1054] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1056 attached [pid 1054] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1055 attached [pid 1055] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1056] set_robust_list(0x5555636e06a0, 24 [pid 304] <... restart_syscall resumed>) = 0 [pid 1056] <... set_robust_list resumed>) = 0 [pid 1056] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1055] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1056] <... prctl resumed>) = 0 [pid 1053] ioctl(4, LOOP_SET_FD, 3 [pid 304] <... openat resumed>) = 3 [pid 1056] setpgid(0, 0 [pid 1053] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] ioctl(3, LOOP_CLR_FD [pid 1056] <... setpgid resumed>) = 0 [pid 1053] close(4 [pid 304] <... ioctl resumed>) = 0 [pid 1056] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1053] <... close resumed>) = 0 [pid 304] close(3 [pid 1053] close(3 [pid 304] <... close resumed>) = 0 [pid 1055] <... prctl resumed>) = 0 [pid 1055] setpgid(0, 0) = 0 [pid 1055] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1053] <... close resumed>) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1053] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1055] <... openat resumed>) = 3 [pid 1056] <... openat resumed>) = 3 [pid 1053] <... futex resumed>) = 1 [pid 1051] <... futex resumed>) = 0 [pid 1056] write(3, "1000", 4 [pid 1053] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1051] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1058 [pid 1056] <... write resumed>) = 4 [pid 1053] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1051] <... futex resumed>) = 0 [pid 1056] close(3 [pid 1053] chdir("./file0" [pid 1051] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1053] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1056] <... close resumed>) = 0 [pid 1053] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 1056] write(1, "executing program\n", 18 [pid 1055] write(3, "1000", 4 [pid 1053] <... futex resumed>) = 1 [pid 1051] <... futex resumed>) = 0 [pid 1053] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1051] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1056] <... write resumed>) = 18 [pid 1053] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1051] <... futex resumed>) = 0 [pid 1053] creat("./bus", 000 [pid 1051] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1056] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1055] <... write resumed>) = 4 [pid 1053] <... creat resumed>) = 3 [pid 1056] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1055] close(3 [pid 1053] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1056] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1055] <... close resumed>) = 0 [pid 1053] <... futex resumed>) = 1 [pid 1051] <... futex resumed>) = 0 [pid 1056] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1053] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1051] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1056] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1053] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1051] <... futex resumed>) = 0 [pid 1056] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1053] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1051] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}executing program ./strace-static-x86_64: Process 1057 attached [pid 1056] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1055] write(1, "executing program\n", 18 [pid 1053] <... openat resumed>) = 4 [pid 1053] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1057] set_robust_list(0x7fe6f87d19a0, 24 [pid 1056] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1055] <... write resumed>) = 18 [pid 1053] <... futex resumed>) = 1 [pid 1057] <... set_robust_list resumed>) = 0 [pid 1055] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1053] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1051] <... futex resumed>) = 0 [pid 1057] rt_sigprocmask(SIG_SETMASK, [], [pid 1056] <... mprotect resumed>) = 0 [pid 1055] <... futex resumed>) = 0 [pid 1051] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1057] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1056] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1055] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1053] <... futex resumed>) = 0 [pid 1051] <... futex resumed>) = 1 [pid 1056] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1053] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1051] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1057] memfd_create("syzkaller", 0 [pid 1056] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1055] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1053] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1057] <... memfd_create resumed>) = 3 [pid 1055] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1053] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1057] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1056] <... clone3 resumed> => {parent_tid=[1059]}, 88) = 1059 [pid 1055] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1053] <... futex resumed>) = 1 [pid 1051] <... futex resumed>) = 0 [pid 1057] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1056] rt_sigprocmask(SIG_SETMASK, [], [pid 1055] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1053] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1051] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1055] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1057] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1055] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1057] <... write resumed>) = 262144 [pid 1055] <... mprotect resumed>) = 0 [pid 1055] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1055] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1051] <... futex resumed>) = 0 [pid 1055] <... clone3 resumed> => {parent_tid=[1060]}, 88) = 1060 [pid 1051] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1056] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1055] rt_sigprocmask(SIG_SETMASK, [], [pid 1053] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1055] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1053] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1056] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1055] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1056] <... futex resumed>) = 0 [pid 1055] <... futex resumed>) = 0 [pid 1053] <... open resumed>) = 5 [pid 1056] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1055] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1053] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1058 attached [pid 1057] munmap(0x7fe6f03b1000, 138412032 [pid 1053] <... futex resumed>) = 1 [pid 1051] <... futex resumed>) = 0 [pid 1053] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1051] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1058] set_robust_list(0x5555636e06a0, 24 [pid 1053] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1051] <... futex resumed>) = 0 [pid 1058] <... set_robust_list resumed>) = 0 [pid 1053] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1051] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1058] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1057] <... munmap resumed>) = 0 [pid 1053] <... mmap resumed>) = 0x20000000 [pid 1053] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1058] <... prctl resumed>) = 0 [pid 1053] <... futex resumed>) = 1 [pid 1051] <... futex resumed>) = 0 [pid 1053] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1058] setpgid(0, 0 [pid 1053] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1051] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1058] <... setpgid resumed>) = 0 [pid 1057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1053] memfd_create("syzkaller", 0 [pid 1051] <... futex resumed>) = 0 [pid 1058] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1057] <... openat resumed>) = 4 [pid 1053] <... memfd_create resumed>) = 6 [pid 1051] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1053] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1058] <... openat resumed>) = 3 [pid 1057] ioctl(4, LOOP_SET_FD, 3 [pid 1053] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1057] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1057] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1060 attached [pid 1060] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1060] rt_sigprocmask(SIG_SETMASK, [], [pid 1058] write(3, "1000", 4 [pid 1053] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1057] ioctl(4, LOOP_SET_FD, 3 [pid 1053] <... write resumed>) = 131072 [pid 1058] <... write resumed>) = 4 [pid 1058] close(3 [pid 1057] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1053] munmap(0x7fe6f03b1000, 138412032 [pid 1057] close(4 [pid 1053] <... munmap resumed>) = 0 [pid 1058] <... close resumed>) = 0 [pid 1053] openat(AT_FDCWD, "/dev/loop4", O_RDWRexecuting program [pid 1058] write(1, "executing program\n", 18 [pid 1057] <... close resumed>) = 0 [pid 1053] <... openat resumed>) = 7 [pid 1058] <... write resumed>) = 18 [pid 1057] close(3 [pid 1053] ioctl(7, LOOP_SET_FD, 6 [pid 1060] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1058] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1057] <... close resumed>) = 0 [pid 1053] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1060] memfd_create("syzkaller", 0 [pid 1058] <... futex resumed>) = 0 [pid 1057] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1053] ioctl(7, LOOP_CLR_FD./strace-static-x86_64: Process 1059 attached [pid 1060] <... memfd_create resumed>) = 3 [pid 1058] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1057] <... futex resumed>) = 1 [pid 1054] <... futex resumed>) = 0 [pid 1053] <... ioctl resumed>) = 0 [pid 1060] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1057] chdir("./file0" [pid 1054] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1060] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1059] set_robust_list(0x7fe6f87d19a0, 24 [pid 1058] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1057] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1054] <... futex resumed>) = 0 [pid 1060] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1059] <... set_robust_list resumed>) = 0 [pid 1058] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1057] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1054] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1059] rt_sigprocmask(SIG_SETMASK, [], [pid 1058] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1057] <... futex resumed>) = 0 [pid 1054] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1053] ioctl(7, LOOP_SET_FD, 6 [pid 1059] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1058] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1057] creat("./bus", 000 [pid 1054] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1053] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1059] memfd_create("syzkaller", 0 [pid 1058] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1057] <... creat resumed>) = 3 [pid 1054] <... futex resumed>) = 0 [pid 1053] close(7 [pid 1059] <... memfd_create resumed>) = 3 [pid 1058] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1057] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1054] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1053] <... close resumed>) = 0 [pid 1059] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1058] <... mprotect resumed>) = 0 [pid 1057] <... futex resumed>) = 0 [pid 1054] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1053] close(6 [pid 1059] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1058] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1057] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1054] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1060] <... write resumed>) = 262144 [pid 1058] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1057] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1054] <... futex resumed>) = 0 [pid 1053] <... close resumed>) = 0 [pid 1057] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1054] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1053] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1058] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1059] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1057] <... openat resumed>) = 4 [pid 1053] <... futex resumed>) = 1 [pid 1051] <... futex resumed>) = 0 [pid 1060] munmap(0x7fe6f03b1000, 138412032 [pid 1057] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1053] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1051] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1060] <... munmap resumed>) = 0 [pid 1059] <... write resumed>) = 262144 [pid 1058] <... clone3 resumed> => {parent_tid=[1061]}, 88) = 1061 [pid 1057] <... futex resumed>) = 1 [pid 1054] <... futex resumed>) = 0 [pid 1053] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1051] <... futex resumed>) = 0 [pid 1060] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1059] munmap(0x7fe6f03b1000, 138412032 [pid 1058] rt_sigprocmask(SIG_SETMASK, [], [pid 1057] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1054] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1053] mknod(0x20000000, 000 [pid 1051] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1060] <... openat resumed>) = 4 [pid 1059] <... munmap resumed>) = 0 [pid 1058] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1057] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1054] <... futex resumed>) = 0 [pid 1053] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1060] ioctl(4, LOOP_SET_FD, 3 [pid 1059] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1058] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1057] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1054] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1060] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1059] <... openat resumed>) = 4 [pid 1058] <... futex resumed>) = 0 [pid 1057] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1053] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1060] ioctl(4, LOOP_CLR_FD [pid 1059] ioctl(4, LOOP_SET_FD, 3 [pid 1058] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1057] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1053] <... futex resumed>) = 1 [pid 1060] <... ioctl resumed>) = 0 [pid 1059] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1057] <... futex resumed>) = 1 [pid 1054] <... futex resumed>) = 0 [pid 1053] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1051] <... futex resumed>) = 0 [pid 1059] ioctl(4, LOOP_CLR_FD [pid 1057] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1054] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1057] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1054] <... futex resumed>) = 0 [pid 1051] exit_group(0 [pid 1057] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1054] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1059] <... ioctl resumed>) = 0 [pid 1057] <... open resumed>) = 5 [pid 1053] <... futex resumed>) = ? [pid 1051] <... exit_group resumed>) = ? [pid 1060] ioctl(4, LOOP_SET_FD, 3 [pid 1057] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1060] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1057] <... futex resumed>) = 1 [pid 1054] <... futex resumed>) = 0 [pid 1053] +++ exited with 0 +++ [pid 1060] close(4 [pid 1057] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1054] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1060] <... close resumed>) = 0 [pid 1057] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1054] <... futex resumed>) = 0 [pid 1051] +++ exited with 0 +++ ./strace-static-x86_64: Process 1061 attached [pid 1060] close(3 [pid 1057] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1054] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1051, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1061] set_robust_list(0x7fe6f87d19a0, 24 [pid 1060] <... close resumed>) = 0 [pid 1057] <... mmap resumed>) = 0x20000000 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 1061] <... set_robust_list resumed>) = 0 [pid 1060] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1059] ioctl(4, LOOP_SET_FD, 3 [pid 1057] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1061] rt_sigprocmask(SIG_SETMASK, [], [pid 1060] <... futex resumed>) = 1 [pid 1059] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1057] <... futex resumed>) = 1 [pid 1055] <... futex resumed>) = 0 [pid 1054] <... futex resumed>) = 0 [pid 1061] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1060] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1059] close(4 [pid 1057] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1055] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1054] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1061] memfd_create("syzkaller", 0 [pid 1060] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1059] <... close resumed>) = 0 [pid 1057] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1055] <... futex resumed>) = 0 [pid 1054] <... futex resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 1061] <... memfd_create resumed>) = 3 [pid 1060] chdir("./file0" [pid 1059] close(3 [pid 1057] memfd_create("syzkaller", 0 [pid 1055] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1054] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1060] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1057] <... memfd_create resumed>) = 6 [pid 1060] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1059] <... close resumed>) = 0 [pid 1061] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1057] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1060] <... futex resumed>) = 1 [pid 1059] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1057] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1055] <... futex resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1061] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1060] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1059] <... futex resumed>) = 1 [pid 1057] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1056] <... futex resumed>) = 0 [pid 1055] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... openat resumed>) = 3 [pid 1060] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1059] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1057] <... write resumed>) = 131072 [pid 1056] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1055] <... futex resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 1060] creat("./bus", 000 [pid 1059] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1057] munmap(0x7fe6f03b1000, 138412032 [pid 1056] <... futex resumed>) = 0 [pid 1055] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... ioctl resumed>) = 0 [pid 1061] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1060] <... creat resumed>) = 3 [pid 1059] chdir("./file0" [pid 1057] <... munmap resumed>) = 0 [pid 1056] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] close(3 [pid 1060] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1059] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1057] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1060] <... futex resumed>) = 1 [pid 1059] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1057] <... openat resumed>) = 7 [pid 1055] <... futex resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 1060] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1059] <... futex resumed>) = 1 [pid 1057] ioctl(7, LOOP_SET_FD, 6 [pid 1056] <... futex resumed>) = 0 [pid 1055] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1061] <... write resumed>) = 262144 [pid 1060] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1059] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1057] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1056] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1055] <... futex resumed>) = 0 [pid 1061] munmap(0x7fe6f03b1000, 138412032 [pid 1060] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1059] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1057] ioctl(7, LOOP_CLR_FD [pid 1056] <... futex resumed>) = 0 [pid 1055] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1061] <... munmap resumed>) = 0 [pid 1060] <... openat resumed>) = 4 [pid 1059] creat("./bus", 000 [pid 1057] <... ioctl resumed>) = 0 [pid 1056] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1062 [pid 1061] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1060] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1059] <... creat resumed>) = 3 [pid 1061] <... openat resumed>) = 4 [pid 1060] <... futex resumed>) = 1 [pid 1059] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1055] <... futex resumed>) = 0 [pid 1060] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1059] <... futex resumed>) = 1 [pid 1056] <... futex resumed>) = 0 [pid 1055] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1061] ioctl(4, LOOP_SET_FD, 3 [pid 1060] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1059] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1056] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1055] <... futex resumed>) = 0 [pid 1061] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1060] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1059] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1056] <... futex resumed>) = 0 [pid 1055] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1061] ioctl(4, LOOP_CLR_FD [pid 1059] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1056] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1061] <... ioctl resumed>) = 0 [pid 1059] <... openat resumed>) = 4 [pid 1057] ioctl(7, LOOP_SET_FD, 6 [pid 1059] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1057] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1059] <... futex resumed>) = 1 [pid 1057] close(7 [pid 1056] <... futex resumed>) = 0 [pid 1059] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1060] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1057] <... close resumed>) = 0 [pid 1056] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1060] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1059] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1057] close(6 [pid 1056] <... futex resumed>) = 0 [pid 1060] <... futex resumed>) = 1 [pid 1059] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1057] <... close resumed>) = 0 [pid 1056] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1055] <... futex resumed>) = 0 [pid 1061] ioctl(4, LOOP_SET_FD, 3 [pid 1060] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1057] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1055] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1060] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1057] <... futex resumed>) = 1 [pid 1055] <... futex resumed>) = 0 [pid 1054] <... futex resumed>) = 0 [pid 1061] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1060] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1059] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1057] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1055] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1054] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1061] close(4 [pid 1060] <... open resumed>) = 5 [pid 1059] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1057] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1054] <... futex resumed>) = 0 [pid 1061] <... close resumed>) = 0 [pid 1060] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1059] <... futex resumed>) = 1 [pid 1057] mknod(0x20000000, 000 [pid 1056] <... futex resumed>) = 0 [pid 1054] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1061] close(3 [pid 1060] <... futex resumed>) = 1 [pid 1059] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1057] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1056] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1055] <... futex resumed>) = 0 [pid 1060] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1059] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1057] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1056] <... futex resumed>) = 0 [pid 1055] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1060] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1059] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1057] <... futex resumed>) = 1 [pid 1056] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1055] <... futex resumed>) = 0 [pid 1054] <... futex resumed>) = 0 [pid 1061] <... close resumed>) = 0 [pid 1060] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1059] <... open resumed>) = 5 [pid 1057] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1055] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1054] exit_group(0./strace-static-x86_64: Process 1062 attached [pid 1061] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1060] <... mmap resumed>) = 0x20000000 [pid 1059] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1057] <... futex resumed>) = ? [pid 1054] <... exit_group resumed>) = ? [pid 1062] set_robust_list(0x5555636e06a0, 24 [pid 1061] <... futex resumed>) = 1 [pid 1060] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1059] <... futex resumed>) = 1 [pid 1058] <... futex resumed>) = 0 [pid 1057] +++ exited with 0 +++ [pid 1056] <... futex resumed>) = 0 [pid 1054] +++ exited with 0 +++ [pid 1062] <... set_robust_list resumed>) = 0 [pid 1061] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1060] <... futex resumed>) = 1 [pid 1059] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1058] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1056] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1055] <... futex resumed>) = 0 [pid 1062] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1061] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1060] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1059] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1058] <... futex resumed>) = 0 [pid 1056] <... futex resumed>) = 0 [pid 1055] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1054, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1061] chdir("./file0" [pid 1060] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1059] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1058] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1056] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1055] <... futex resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1062] <... prctl resumed>) = 0 [pid 1061] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1060] memfd_create("syzkaller", 0 [pid 1059] <... mmap resumed>) = 0x20000000 [pid 1055] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 303] <... openat resumed>) = 3 [pid 1062] setpgid(0, 0 [pid 1061] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1060] <... memfd_create resumed>) = 6 [pid 1059] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] ioctl(3, LOOP_CLR_FD [pid 1062] <... setpgid resumed>) = 0 [pid 1061] <... futex resumed>) = 1 [pid 1060] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1059] <... futex resumed>) = 1 [pid 1058] <... futex resumed>) = 0 [pid 1056] <... futex resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 1062] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1061] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1060] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1059] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1058] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1056] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] close(3 [pid 1062] <... openat resumed>) = 3 [pid 1061] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1060] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1059] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1058] <... futex resumed>) = 0 [pid 1056] <... futex resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 1062] write(3, "1000", 4 [pid 1061] creat("./bus", 000 [pid 1060] <... write resumed>) = 131072 [pid 1059] memfd_create("syzkaller", 0 [pid 1058] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1056] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1062] <... write resumed>) = 4 [pid 1061] <... creat resumed>) = 3 [pid 1060] munmap(0x7fe6f03b1000, 138412032 [pid 1059] <... memfd_create resumed>) = 6 [pid 1062] close(3 [pid 1061] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1060] <... munmap resumed>) = 0 [pid 1059] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1063 [pid 1062] <... close resumed>) = 0 [pid 1061] <... futex resumed>) = 1 [pid 1060] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1059] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1058] <... futex resumed>) = 0 [pid 1062] write(1, "executing program\n", 18 [pid 1061] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1060] <... openat resumed>) = 7 [pid 1060] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1060] ioctl(7, LOOP_CLR_FDexecuting program ) = 0 [pid 1061] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1059] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1058] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1062] <... write resumed>) = 18 [pid 1061] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1059] <... write resumed>) = 131072 [pid 1058] <... futex resumed>) = 0 [pid 1061] <... openat resumed>) = 4 [pid 1059] munmap(0x7fe6f03b1000, 138412032 [pid 1058] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1062] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1061] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1062] <... futex resumed>) = 0 [pid 1061] <... futex resumed>) = 0 [pid 1059] <... munmap resumed>) = 0 [pid 1058] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1062] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1061] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1060] ioctl(7, LOOP_SET_FD, 6 [pid 1059] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1058] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1062] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1061] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1060] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1062] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1061] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1060] close(7 [pid 1059] <... openat resumed>) = 7 [pid 1058] <... futex resumed>) = 0 [pid 1062] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1061] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1060] <... close resumed>) = 0 [pid 1059] ioctl(7, LOOP_SET_FD, 6 [pid 1058] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1062] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1061] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1060] close(6 [pid 1059] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1058] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1062] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1061] <... futex resumed>) = 0 [pid 1060] <... close resumed>) = 0 [pid 1059] ioctl(7, LOOP_CLR_FD [pid 1058] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1062] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1061] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1060] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1059] <... ioctl resumed>) = 0 [pid 1058] <... futex resumed>) = 0 [pid 1062] <... mprotect resumed>) = 0 [pid 1061] <... open resumed>) = 5 [pid 1060] <... futex resumed>) = 1 [pid 1058] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1055] <... futex resumed>) = 0 [pid 1062] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1061] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1060] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1058] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1055] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1062] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1061] <... futex resumed>) = 0 [pid 1060] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1058] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1055] <... futex resumed>) = 0 [pid 1062] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1061] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1060] mknod(0x20000000, 000 [pid 1058] <... futex resumed>) = 0 [pid 1055] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1060] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1060] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1055] <... futex resumed>) = 0 [pid 1061] <... mmap resumed>) = 0x20000000 [pid 1060] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1058] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1055] exit_group(0 [pid 1062] <... clone3 resumed> => {parent_tid=[1064]}, 88) = 1064 [pid 1061] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1060] <... futex resumed>) = ? [pid 1058] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1055] <... exit_group resumed>) = ? [pid 1062] rt_sigprocmask(SIG_SETMASK, [], [pid 1061] <... futex resumed>) = 0 [pid 1060] +++ exited with 0 +++ [pid 1059] ioctl(7, LOOP_SET_FD, 6 [pid 1058] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1055] +++ exited with 0 +++ [pid 1062] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1061] memfd_create("syzkaller", 0 [pid 1059] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1058] <... futex resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1055, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1062] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1061] <... memfd_create resumed>) = 6 [pid 1059] close(7 [pid 1058] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1062] <... futex resumed>) = 0 [pid 1061] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1059] <... close resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 305] ioctl(3, LOOP_CLR_FD) = 0 [pid 305] close(3) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 1065 ./strace-static-x86_64: Process 1064 attached [pid 1064] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1064] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1061] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1059] close(6 [pid 1062] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1064] memfd_create("syzkaller", 0) = 3 [pid 1064] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1064] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1061] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1059] <... close resumed>) = 0 [pid 1064] <... write resumed>) = 262144 [pid 1061] <... write resumed>) = 131072 [pid 1059] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1061] munmap(0x7fe6f03b1000, 138412032 [pid 1059] <... futex resumed>) = 1 [pid 1056] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1065 attached [pid 1061] <... munmap resumed>) = 0 [pid 1059] mknod(0x20000000, 000 [pid 1056] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1061] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1059] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1056] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1063 attached [pid 1061] <... openat resumed>) = 7 [pid 1059] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1056] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1063] set_robust_list(0x5555636e06a0, 24 [pid 1061] ioctl(7, LOOP_SET_FD, 6 [pid 1059] <... futex resumed>) = 0 [pid 1056] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1063] <... set_robust_list resumed>) = 0 [pid 1061] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1059] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1061] ioctl(7, LOOP_CLR_FD [pid 1056] exit_group(0 [pid 1061] <... ioctl resumed>) = 0 [pid 1056] <... exit_group resumed>) = ? [pid 1059] <... futex resumed>) = ? [pid 1065] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1065] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1064] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1063] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1059] +++ exited with 0 +++ [pid 1056] +++ exited with 0 +++ [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1056, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 1065] <... prctl resumed>) = 0 [pid 1065] setpgid(0, 0) = 0 [pid 1064] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1065] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1063] <... prctl resumed>) = 0 [pid 1063] setpgid(0, 0 [pid 1061] ioctl(7, LOOP_SET_FD, 6 [pid 1063] <... setpgid resumed>) = 0 [pid 1061] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1061] close(7) = 0 [pid 1063] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1061] close(6 [pid 1064] <... openat resumed>) = 4 [pid 1061] <... close resumed>) = 0 [pid 1061] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1063] <... openat resumed>) = 3 [pid 1061] <... futex resumed>) = 1 [pid 1058] <... futex resumed>) = 0 [pid 1063] write(3, "1000", 4 [pid 1061] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1058] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1063] <... write resumed>) = 4 [pid 1061] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1058] <... futex resumed>) = 0 [pid 1063] close(3 [pid 1061] mknod(0x20000000, 000 [pid 1058] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1061] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1063] <... close resumed>) = 0 [pid 1061] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 1064] ioctl(4, LOOP_SET_FD, 3 [pid 1063] write(1, "executing program\n", 18 [pid 1061] <... futex resumed>) = 1 [pid 1058] <... futex resumed>) = 0 [pid 1063] <... write resumed>) = 18 [pid 1061] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1058] exit_group(0 [pid 1063] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1061] <... futex resumed>) = ? [pid 1058] <... exit_group resumed>) = ? [pid 1065] <... openat resumed>) = 3 [pid 1064] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1061] +++ exited with 0 +++ [pid 1065] write(3, "1000", 4 [pid 1064] ioctl(4, LOOP_CLR_FD [pid 1065] <... write resumed>) = 4 [pid 1064] <... ioctl resumed>) = 0 [pid 1058] +++ exited with 0 +++ [pid 1065] close(3 [pid 1063] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 302] <... restart_syscall resumed>) = 0 [pid 1065] <... close resumed>) = 0 [pid 1063] <... rt_sigaction resumed>NULL, 8) = 0 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1058, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- executing program [pid 1065] write(1, "executing program\n", 18 [pid 1063] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 1065] <... write resumed>) = 18 [pid 1063] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1065] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1063] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 302] <... openat resumed>) = 3 [pid 1065] <... futex resumed>) = 0 [pid 1064] ioctl(4, LOOP_SET_FD, 3 [pid 1063] <... mmap resumed>) = 0x7fe6f87b1000 [pid 302] ioctl(3, LOOP_CLR_FD [pid 1065] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1064] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1063] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 302] <... ioctl resumed>) = 0 [pid 1065] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1064] close(4 [pid 1063] <... mprotect resumed>) = 0 [pid 302] close(3 [pid 1065] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1064] <... close resumed>) = 0 [pid 1063] rt_sigprocmask(SIG_BLOCK, ~[], [pid 302] <... close resumed>) = 0 [pid 1065] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1064] close(3 [pid 1063] <... rt_sigprocmask resumed>[], 8) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1065] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1064] <... close resumed>) = 0 [pid 1063] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1065] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1064] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1066 [pid 1065] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1064] <... futex resumed>) = 1 [pid 1065] <... mprotect resumed>) = 0 [pid 1064] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1065] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1065] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1062] <... futex resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 1063] <... clone3 resumed> => {parent_tid=[1067]}, 88) = 1067 [pid 1062] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1064] <... futex resumed>) = 0 [pid 1063] rt_sigprocmask(SIG_SETMASK, [], [pid 1062] <... futex resumed>) = 1 [pid 1063] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1062] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1063] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1065] <... clone3 resumed> => {parent_tid=[1068]}, 88) = 1068 [pid 1064] chdir("./file0" [pid 1063] <... futex resumed>) = 0 [pid 304] <... openat resumed>) = 3 [pid 1065] rt_sigprocmask(SIG_SETMASK, [], [pid 1064] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1063] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 304] ioctl(3, LOOP_CLR_FD [pid 1065] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1064] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1065] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1064] <... futex resumed>) = 1 [pid 1062] <... futex resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 1065] <... futex resumed>) = 0 [pid 1064] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1062] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] close(3 [pid 1065] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1064] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1062] <... futex resumed>) = 0 [pid 1064] creat("./bus", 000 [pid 1062] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... close resumed>) = 0 [pid 1064] <... creat resumed>) = 3 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1064] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1062] <... futex resumed>) = 0 [pid 1064] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1062] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1069 [pid 1064] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1062] <... futex resumed>) = 0 [pid 1064] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1062] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1066 attached ./strace-static-x86_64: Process 1067 attached [pid 1064] <... openat resumed>) = 4 [pid 1064] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1062] <... futex resumed>) = 0 [pid 1064] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1062] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1064] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1062] <... futex resumed>) = 0 [pid 1064] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1062] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1067] set_robust_list(0x7fe6f87d19a0, 24 [pid 1066] set_robust_list(0x5555636e06a0, 24 [pid 1064] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1064] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1062] <... futex resumed>) = 0 [pid 1064] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1062] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1064] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1062] <... futex resumed>) = 0 [pid 1064] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1062] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1064] <... open resumed>) = 5 [pid 1064] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1062] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1068 attached [pid 1064] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1062] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1068] set_robust_list(0x7fe6f87d19a0, 24 [pid 1064] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1062] <... futex resumed>) = 0 [pid 1068] <... set_robust_list resumed>) = 0 [pid 1064] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1062] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1068] rt_sigprocmask(SIG_SETMASK, [], [pid 1064] <... mmap resumed>) = 0x20000000 [pid 1068] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1064] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1068] memfd_create("syzkaller", 0 [pid 1064] <... futex resumed>) = 1 [pid 1062] <... futex resumed>) = 0 [pid 1068] <... memfd_create resumed>) = 3 [pid 1064] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1062] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1068] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1064] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1062] <... futex resumed>) = 0 [pid 1068] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1064] memfd_create("syzkaller", 0 [pid 1062] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1069 attached [pid 1067] <... set_robust_list resumed>) = 0 [pid 1066] <... set_robust_list resumed>) = 0 [pid 1064] <... memfd_create resumed>) = 6 [pid 1064] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1064] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1069] set_robust_list(0x5555636e06a0, 24 [pid 1068] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1067] rt_sigprocmask(SIG_SETMASK, [], [pid 1066] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1064] <... write resumed>) = 131072 [pid 1069] <... set_robust_list resumed>) = 0 [pid 1067] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1066] <... prctl resumed>) = 0 [pid 1064] munmap(0x7fe6f03b1000, 138412032 [pid 1069] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1067] memfd_create("syzkaller", 0 [pid 1066] setpgid(0, 0 [pid 1064] <... munmap resumed>) = 0 [pid 1069] <... prctl resumed>) = 0 [pid 1067] <... memfd_create resumed>) = 3 [pid 1066] <... setpgid resumed>) = 0 [pid 1064] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1069] setpgid(0, 0 [pid 1067] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1066] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1064] <... openat resumed>) = 7 [pid 1069] <... setpgid resumed>) = 0 [pid 1068] <... write resumed>) = 262144 [pid 1067] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1066] <... openat resumed>) = 3 [pid 1064] ioctl(7, LOOP_SET_FD, 6 [pid 1069] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1064] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1064] ioctl(7, LOOP_CLR_FD) = 0 [pid 1068] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1068] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 1067] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1066] write(3, "1000", 4 [pid 1069] <... openat resumed>) = 3 [pid 1064] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1064] close(7) = 0 [pid 1064] close(6 [pid 1069] write(3, "1000", 4 [pid 1067] <... write resumed>) = 262144 [pid 1066] <... write resumed>) = 4 [pid 1064] <... close resumed>) = 0 [pid 1069] <... write resumed>) = 4 [pid 1068] ioctl(4, LOOP_SET_FD, 3 [pid 1067] munmap(0x7fe6f03b1000, 138412032 [pid 1066] close(3 [pid 1064] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1068] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1064] <... futex resumed>) = 1 [pid 1062] <... futex resumed>) = 0 [pid 1068] ioctl(4, LOOP_CLR_FD [pid 1064] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1062] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1068] <... ioctl resumed>) = 0 [pid 1064] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1062] <... futex resumed>) = 0 [pid 1064] mknod(0x20000000, 000 [pid 1062] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1064] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1064] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1062] <... futex resumed>) = 0 [pid 1064] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1062] exit_group(0 [pid 1069] close(3 [pid 1066] <... close resumed>) = 0 [pid 1064] <... futex resumed>) = ? executing program executing program [pid 1062] <... exit_group resumed>) = ? [pid 1069] <... close resumed>) = 0 [pid 1067] <... munmap resumed>) = 0 [pid 1066] write(1, "executing program\n", 18 [pid 1064] +++ exited with 0 +++ [pid 1062] +++ exited with 0 +++ [pid 1069] write(1, "executing program\n", 18 [pid 1066] <... write resumed>) = 18 [pid 1067] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1069] <... write resumed>) = 18 [pid 1066] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1067] <... openat resumed>) = 4 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1062, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1066] <... futex resumed>) = 0 [pid 1069] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1067] ioctl(4, LOOP_SET_FD, 3 [pid 1066] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 1069] <... futex resumed>) = 0 [pid 1067] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1066] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1069] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1066] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1069] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1067] ioctl(4, LOOP_CLR_FD [pid 1066] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1069] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1067] <... ioctl resumed>) = 0 [pid 1069] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1066] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1069] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1068] ioctl(4, LOOP_SET_FD, 3 [pid 1066] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1069] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1069] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1068] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1066] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1069] <... mprotect resumed>) = 0 [pid 1068] close(4 [pid 1066] <... mprotect resumed>) = 0 [pid 1069] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1068] <... close resumed>) = 0 [pid 1066] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1069] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1068] close(3 [pid 1066] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1069] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1066] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1068] <... close resumed>) = 0 [pid 1069] <... clone3 resumed> => {parent_tid=[1070]}, 88) = 1070 [pid 1067] ioctl(4, LOOP_SET_FD, 3 [pid 1066] <... clone3 resumed> => {parent_tid=[1071]}, 88) = 1071 [pid 1069] rt_sigprocmask(SIG_SETMASK, [], [pid 1067] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1066] rt_sigprocmask(SIG_SETMASK, [], [pid 1069] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1067] close(4 [pid 1066] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1069] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1067] <... close resumed>) = 0 [pid 1069] <... futex resumed>) = 0 [pid 1067] close(3 [pid 1066] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1069] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1068] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1065] <... futex resumed>) = 0 [pid 1068] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1065] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1068] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1067] <... close resumed>) = 0 [pid 1066] <... futex resumed>) = 0 [pid 1065] <... futex resumed>) = 0 [pid 1068] chdir("./file0" [pid 1067] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1066] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1065] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1068] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1067] <... futex resumed>) = 1 [pid 1063] <... futex resumed>) = 0 [pid 1068] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1067] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 306] <... restart_syscall resumed>) = 0 [pid 1063] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1068] <... futex resumed>) = 1 [pid 1067] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1065] <... futex resumed>) = 0 [pid 1063] <... futex resumed>) = 0 [pid 1068] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1067] chdir("./file0" [pid 1065] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1063] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1068] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1067] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1065] <... futex resumed>) = 0 [pid 1068] creat("./bus", 000 [pid 1067] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1065] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1071 attached [pid 1068] <... creat resumed>) = 3 [pid 1067] <... futex resumed>) = 1 [pid 1063] <... futex resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1071] set_robust_list(0x7fe6f87d19a0, 24 [pid 1068] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1067] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1063] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... openat resumed>) = 3 ./strace-static-x86_64: Process 1070 attached [pid 1071] <... set_robust_list resumed>) = 0 [pid 1068] <... futex resumed>) = 1 [pid 1067] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1065] <... futex resumed>) = 0 [pid 1063] <... futex resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 1071] rt_sigprocmask(SIG_SETMASK, [], [pid 1070] set_robust_list(0x7fe6f87d19a0, 24 [pid 1068] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1067] creat("./bus", 000 [pid 1065] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1063] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... ioctl resumed>) = 0 [pid 1070] <... set_robust_list resumed>) = 0 [pid 1068] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1065] <... futex resumed>) = 0 [pid 1070] rt_sigprocmask(SIG_SETMASK, [], [pid 1068] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1065] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1070] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1068] <... openat resumed>) = 4 [pid 1070] memfd_create("syzkaller", 0 [pid 1068] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1070] <... memfd_create resumed>) = 3 [pid 1068] <... futex resumed>) = 1 [pid 1065] <... futex resumed>) = 0 [pid 1070] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1068] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1065] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1070] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1068] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1065] <... futex resumed>) = 0 [pid 1071] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1070] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1068] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1067] <... creat resumed>) = 3 [pid 1065] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] close(3 [pid 1071] memfd_create("syzkaller", 0 [pid 1068] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1067] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... close resumed>) = 0 [pid 1071] <... memfd_create resumed>) = 3 [pid 1068] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1067] <... futex resumed>) = 1 [pid 1063] <... futex resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1071] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1068] <... futex resumed>) = 1 [pid 1067] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1065] <... futex resumed>) = 0 [pid 1063] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1071] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1070] <... write resumed>) = 262144 [pid 1068] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1067] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1065] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1063] <... futex resumed>) = 0 [pid 1068] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1067] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1065] <... futex resumed>) = 0 [pid 1063] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1072 [pid 1068] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1067] <... openat resumed>) = 4 [pid 1065] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1068] <... open resumed>) = 5 [pid 1067] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1068] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1067] <... futex resumed>) = 1 [pid 1068] <... futex resumed>) = 1 [pid 1067] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1065] <... futex resumed>) = 0 [pid 1063] <... futex resumed>) = 0 [pid 1070] munmap(0x7fe6f03b1000, 138412032 [pid 1068] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1065] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1063] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1070] <... munmap resumed>) = 0 [pid 1068] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1065] <... futex resumed>) = 0 [pid 1063] <... futex resumed>) = 1 [pid 1070] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1068] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1067] <... futex resumed>) = 0 [pid 1065] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1063] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1070] <... openat resumed>) = 4 [pid 1068] <... mmap resumed>) = 0x20000000 [pid 1067] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1071] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1070] ioctl(4, LOOP_SET_FD, 3 [pid 1068] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1070] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1068] <... futex resumed>) = 1 [pid 1065] <... futex resumed>) = 0 [pid 1070] ioctl(4, LOOP_CLR_FD [pid 1068] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1065] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1070] <... ioctl resumed>) = 0 [pid 1068] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1065] <... futex resumed>) = 0 [pid 1071] <... write resumed>) = 262144 [pid 1068] memfd_create("syzkaller", 0 [pid 1065] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1068] <... memfd_create resumed>) = 6 [pid 1068] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1068] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1071] munmap(0x7fe6f03b1000, 138412032 [pid 1070] ioctl(4, LOOP_SET_FD, 3 [pid 1068] <... write resumed>) = 131072 [pid 1067] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1070] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1068] munmap(0x7fe6f03b1000, 138412032 [pid 1070] close(4 [pid 1068] <... munmap resumed>) = 0 [pid 1070] <... close resumed>) = 0 [pid 1068] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1070] close(3 [pid 1068] <... openat resumed>) = 7 [pid 1070] <... close resumed>) = 0 [pid 1068] ioctl(7, LOOP_SET_FD, 6 [pid 1070] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1068] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1070] <... futex resumed>) = 1 [pid 1068] ioctl(7, LOOP_CLR_FD [pid 1070] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1068] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 1072 attached [pid 1072] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1072] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1072] setpgid(0, 0) = 0 [pid 1072] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1069] <... futex resumed>) = 0 [pid 1067] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1069] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1067] <... futex resumed>) = 1 [pid 1063] <... futex resumed>) = 0 [pid 1069] <... futex resumed>) = 1 [pid 1067] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1072] write(3, "1000", 4 [pid 1071] <... munmap resumed>) = 0 [pid 1070] <... futex resumed>) = 0 [pid 1063] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1072] <... write resumed>) = 4 [pid 1071] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1070] chdir("./file0" [pid 1069] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1068] ioctl(7, LOOP_SET_FD, 6 [pid 1067] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1063] <... futex resumed>) = 0 [pid 1072] close(3 [pid 1071] <... openat resumed>) = 4 [pid 1070] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1068] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1067] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1063] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1072] <... close resumed>) = 0 [pid 1070] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1068] close(7 [pid 1067] <... open resumed>) = 5 executing program [pid 1072] write(1, "executing program\n", 18 [pid 1070] <... futex resumed>) = 1 [pid 1069] <... futex resumed>) = 0 [pid 1068] <... close resumed>) = 0 [pid 1067] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1072] <... write resumed>) = 18 [pid 1070] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1069] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1068] close(6 [pid 1067] <... futex resumed>) = 1 [pid 1063] <... futex resumed>) = 0 [pid 1072] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1071] ioctl(4, LOOP_SET_FD, 3 [pid 1070] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1069] <... futex resumed>) = 0 [pid 1068] <... close resumed>) = 0 [pid 1067] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1063] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1072] <... futex resumed>) = 0 [pid 1070] creat("./bus", 000 [pid 1068] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1072] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1071] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1070] <... creat resumed>) = 3 [pid 1069] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1068] <... futex resumed>) = 1 [pid 1067] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1065] <... futex resumed>) = 0 [pid 1063] <... futex resumed>) = 0 [pid 1072] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1071] ioctl(4, LOOP_CLR_FD [pid 1070] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1069] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1068] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1067] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1065] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1063] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1072] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1071] <... ioctl resumed>) = 0 [pid 1070] <... futex resumed>) = 0 [pid 1069] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1068] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1067] <... mmap resumed>) = 0x20000000 [pid 1065] <... futex resumed>) = 0 [pid 1072] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1070] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1069] <... futex resumed>) = 0 [pid 1068] mknod(0x20000000, 000 [pid 1067] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1065] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1072] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1070] <... openat resumed>) = 4 [pid 1069] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1068] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1067] <... futex resumed>) = 1 [pid 1063] <... futex resumed>) = 0 [pid 1072] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1070] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1069] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1068] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1067] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1063] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1072] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1071] ioctl(4, LOOP_SET_FD, 3 [pid 1070] <... futex resumed>) = 0 [pid 1069] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1068] <... futex resumed>) = 1 [pid 1067] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1065] <... futex resumed>) = 0 [pid 1063] <... futex resumed>) = 0 [pid 1072] <... mprotect resumed>) = 0 [pid 1071] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1070] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1069] <... futex resumed>) = 0 [pid 1068] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1067] memfd_create("syzkaller", 0 [pid 1065] exit_group(0 [pid 1063] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1072] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1071] close(4 [pid 1070] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1069] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1068] <... futex resumed>) = ? [pid 1067] <... memfd_create resumed>) = 6 [pid 1065] <... exit_group resumed>) = ? [pid 1072] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1071] <... close resumed>) = 0 [pid 1070] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1069] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1068] +++ exited with 0 +++ [pid 1067] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1065] +++ exited with 0 +++ [pid 1072] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1071] close(3 [pid 1070] <... futex resumed>) = 0 [pid 1069] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1067] <... mmap resumed>) = 0x7fe6f03b1000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1065, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1070] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1069] <... futex resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1072] <... clone3 resumed> => {parent_tid=[1073]}, 88) = 1073 [pid 1070] <... open resumed>) = 5 [pid 1072] rt_sigprocmask(SIG_SETMASK, [], [pid 1070] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1072] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1070] <... futex resumed>) = 0 [pid 1072] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1070] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1072] <... futex resumed>) = 0 [pid 1072] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1069] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1067] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1069] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1069] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1073 attached [pid 1070] <... futex resumed>) = 0 [pid 1069] <... futex resumed>) = 1 [pid 1067] <... write resumed>) = 131072 [pid 1070] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1069] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1071] <... close resumed>) = 0 [pid 1070] <... mmap resumed>) = 0x20000000 [pid 1067] munmap(0x7fe6f03b1000, 138412032 [pid 1071] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1070] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1071] <... futex resumed>) = 1 [pid 1070] <... futex resumed>) = 1 [pid 1069] <... futex resumed>) = 0 [pid 1067] <... munmap resumed>) = 0 [pid 1066] <... futex resumed>) = 0 [pid 1071] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1070] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1069] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1067] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1066] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1071] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1070] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1069] <... futex resumed>) = 0 [pid 1067] <... openat resumed>) = 7 [pid 1066] <... futex resumed>) = 0 [pid 1071] chdir("./file0" [pid 1070] memfd_create("syzkaller", 0 [pid 1069] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1067] ioctl(7, LOOP_SET_FD, 6 [pid 1066] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1071] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1070] <... memfd_create resumed>) = 6 [pid 1067] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1071] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1070] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1067] ioctl(7, LOOP_CLR_FD [pid 1071] <... futex resumed>) = 1 [pid 1070] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1066] <... futex resumed>) = 0 [pid 1067] <... ioctl resumed>) = 0 [pid 1071] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1070] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1066] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1071] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1070] <... write resumed>) = 131072 [pid 1066] <... futex resumed>) = 0 [pid 1071] creat("./bus", 000 [pid 1070] munmap(0x7fe6f03b1000, 138412032 [pid 1066] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1071] <... creat resumed>) = 3 [pid 1070] <... munmap resumed>) = 0 [pid 1071] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1070] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1071] <... futex resumed>) = 1 [pid 1070] <... openat resumed>) = 7 [pid 1066] <... futex resumed>) = 0 [pid 1071] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1070] ioctl(7, LOOP_SET_FD, 6 [pid 1067] ioctl(7, LOOP_SET_FD, 6 [pid 1066] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1071] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1070] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1067] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1066] <... futex resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 1071] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1070] ioctl(7, LOOP_CLR_FD [pid 1067] close(7 [pid 1066] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1071] <... openat resumed>) = 4 [pid 1070] <... ioctl resumed>) = 0 [pid 1067] <... close resumed>) = 0 [pid 1071] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1067] close(6 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1071] <... futex resumed>) = 1 [pid 1066] <... futex resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 1073] set_robust_list(0x7fe6f87d19a0, 24 [pid 1071] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1067] <... close resumed>) = 0 [pid 1066] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] ioctl(3, LOOP_CLR_FD [pid 1073] <... set_robust_list resumed>) = 0 [pid 1071] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1067] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1066] <... futex resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 1073] rt_sigprocmask(SIG_SETMASK, [], [pid 1071] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1067] <... futex resumed>) = 1 [pid 1066] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1063] <... futex resumed>) = 0 [pid 305] close(3 [pid 1073] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1071] <... futex resumed>) = 0 [pid 1067] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1066] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1063] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... close resumed>) = 0 [pid 1073] memfd_create("syzkaller", 0 [pid 1071] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1070] ioctl(7, LOOP_SET_FD, 6 [pid 1067] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1066] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1063] <... futex resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1073] <... memfd_create resumed>) = 3 [pid 1071] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1070] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1067] mknod(0x20000000, 000 [pid 1066] <... futex resumed>) = 0 [pid 1063] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1073] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1071] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1070] close(7 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1074 [pid 1073] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1071] <... open resumed>) = 5 [pid 1070] <... close resumed>) = 0 [pid 1067] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1066] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1073] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1071] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1070] close(6 [pid 1067] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1066] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1073] <... write resumed>) = 262144 [pid 1071] <... futex resumed>) = 0 [pid 1070] <... close resumed>) = 0 [pid 1067] <... futex resumed>) = 1 [pid 1066] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1063] <... futex resumed>) = 0 [pid 1071] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1070] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1067] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1066] <... futex resumed>) = 0 [pid 1071] <... mmap resumed>) = 0x20000000 [pid 1070] <... futex resumed>) = 1 [pid 1069] <... futex resumed>) = 0 [pid 1066] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1063] exit_group(0 [pid 1071] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1070] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1069] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1066] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1063] <... exit_group resumed>) = ? [pid 1071] <... futex resumed>) = 0 [pid 1070] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1069] <... futex resumed>) = 0 [pid 1067] <... futex resumed>) = ? [pid 1066] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1073] munmap(0x7fe6f03b1000, 138412032 [pid 1071] memfd_create("syzkaller", 0 [pid 1070] mknod(0x20000000, 000 [pid 1069] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1073] <... munmap resumed>) = 0 [pid 1071] <... memfd_create resumed>) = 6 [pid 1070] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1067] +++ exited with 0 +++ [pid 1066] <... futex resumed>) = 0 [pid 1063] +++ exited with 0 +++ [pid 1073] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1071] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1070] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1066] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1063, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1073] <... openat resumed>) = 4 [pid 1071] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1070] <... futex resumed>) = 1 [pid 1069] <... futex resumed>) = 0 [pid 1073] ioctl(4, LOOP_SET_FD, 3 [pid 1070] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1073] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1073] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1074 attached [pid 1074] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1071] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1069] exit_group(0 [pid 1074] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1074] setpgid(0, 0 [pid 1071] <... write resumed>) = 131072 [pid 1070] <... futex resumed>) = ? [pid 1069] <... exit_group resumed>) = ? [pid 1071] munmap(0x7fe6f03b1000, 138412032 [pid 1070] +++ exited with 0 +++ [pid 1074] <... setpgid resumed>) = 0 [pid 1074] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1073] ioctl(4, LOOP_SET_FD, 3 [pid 1069] +++ exited with 0 +++ [pid 1074] write(3, "1000", 4 [pid 1073] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1071] <... munmap resumed>) = 0 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1069, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1071] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 1074] <... write resumed>) = 4 [pid 1073] close(4 [pid 1071] <... openat resumed>) = 7 [pid 1074] close(3 [pid 1073] <... close resumed>) = 0 [pid 1071] ioctl(7, LOOP_SET_FD, 6 [pid 1074] <... close resumed>) = 0 [pid 1073] close(3 [pid 1071] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) executing program [pid 1074] write(1, "executing program\n", 18 [pid 1073] <... close resumed>) = 0 [pid 1071] ioctl(7, LOOP_CLR_FD [pid 1074] <... write resumed>) = 18 [pid 1073] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1071] <... ioctl resumed>) = 0 [pid 1074] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1073] <... futex resumed>) = 1 [pid 1072] <... futex resumed>) = 0 [pid 1074] <... futex resumed>) = 0 [pid 1073] chdir("./file0" [pid 1072] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1074] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1073] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1072] <... futex resumed>) = 0 [pid 1074] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1073] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1072] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1074] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1073] <... futex resumed>) = 0 [pid 1072] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1074] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1073] creat("./bus", 000 [pid 1072] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1074] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1073] <... creat resumed>) = 3 [pid 1072] <... futex resumed>) = 0 [pid 1074] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1073] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1072] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1074] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1073] <... futex resumed>) = 0 [pid 1072] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1074] <... mprotect resumed>) = 0 [pid 1073] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1072] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1074] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1073] <... openat resumed>) = 4 [pid 1072] <... futex resumed>) = 0 [pid 1074] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1073] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1072] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1074] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1073] <... futex resumed>) = 0 [pid 1072] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1073] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1072] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... restart_syscall resumed>) = 0 [pid 1074] <... clone3 resumed> => {parent_tid=[1075]}, 88) = 1075 [pid 1072] <... futex resumed>) = 0 [pid 1071] ioctl(7, LOOP_SET_FD, 6 [pid 1074] rt_sigprocmask(SIG_SETMASK, [], [pid 1072] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1071] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1074] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1071] close(7 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1071] <... close resumed>) = 0 [pid 304] <... openat resumed>) = 3 [pid 1071] close(6 [pid 304] ioctl(3, LOOP_CLR_FD [pid 1074] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1071] <... close resumed>) = 0 [pid 1071] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... ioctl resumed>) = 0 [pid 1071] <... futex resumed>) = 1 [pid 1066] <... futex resumed>) = 0 [pid 304] close(3 [pid 1071] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1066] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1071] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1066] <... futex resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 1071] mknod(0x20000000, 000 [pid 1066] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1071] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1074] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1071] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1066] <... futex resumed>) = 0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1076 [pid 1071] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1066] exit_group(0 [pid 1071] <... futex resumed>) = ? [pid 1066] <... exit_group resumed>) = ? [pid 1071] +++ exited with 0 +++ [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 303] ioctl(3, LOOP_CLR_FD [pid 1066] +++ exited with 0 +++ [pid 303] <... ioctl resumed>) = 0 [pid 1073] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 303] close(3 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1066, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1073] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... close resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 1073] <... futex resumed>) = 1 [pid 1072] <... futex resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1073] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1072] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1073] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1072] <... futex resumed>) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1077 [pid 1073] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1072] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1073] <... open resumed>) = 5 [pid 1073] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1072] <... futex resumed>) = 0 [pid 1073] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1072] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1073] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1072] <... futex resumed>) = 0 [pid 1073] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1072] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1073] <... mmap resumed>) = 0x20000000 [pid 1073] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1072] <... futex resumed>) = 0 [pid 1073] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1072] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1073] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1072] <... futex resumed>) = 0 [pid 1073] memfd_create("syzkaller", 0 [pid 1072] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1073] <... memfd_create resumed>) = 6 [pid 1073] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1073] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 1073] munmap(0x7fe6f03b1000, 138412032 [pid 302] <... restart_syscall resumed>) = 0 [pid 1073] <... munmap resumed>) = 0 [pid 1073] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 7 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1073] ioctl(7, LOOP_SET_FD, 6 [pid 302] <... openat resumed>) = 3 ./strace-static-x86_64: Process 1076 attached [pid 1073] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 302] ioctl(3, LOOP_CLR_FD [pid 1076] set_robust_list(0x5555636e06a0, 24 [pid 1073] ioctl(7, LOOP_CLR_FD [pid 302] <... ioctl resumed>) = 0 [pid 1076] <... set_robust_list resumed>) = 0 [pid 1073] <... ioctl resumed>) = 0 [pid 302] close(3 [pid 1076] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 302] <... close resumed>) = 0 [pid 1076] <... prctl resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1077 attached ./strace-static-x86_64: Process 1075 attached [pid 1076] setpgid(0, 0 [pid 1077] set_robust_list(0x5555636e06a0, 24 [pid 1076] <... setpgid resumed>) = 0 [pid 1075] set_robust_list(0x7fe6f87d19a0, 24 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1078 [pid 1076] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1073] ioctl(7, LOOP_SET_FD, 6 [pid 1076] write(3, "1000", 4 [pid 1073] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1076] <... write resumed>) = 4 [pid 1073] close(7 [pid 1076] close(3 [pid 1073] <... close resumed>) = 0 [pid 1076] <... close resumed>) = 0 [pid 1073] close(6executing program [pid 1076] write(1, "executing program\n", 18 [pid 1073] <... close resumed>) = 0 [pid 1076] <... write resumed>) = 18 [pid 1073] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1076] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1073] <... futex resumed>) = 1 [pid 1072] <... futex resumed>) = 0 [pid 1076] <... futex resumed>) = 0 [pid 1073] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1072] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1076] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1073] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1072] <... futex resumed>) = 0 [pid 1077] <... set_robust_list resumed>) = 0 [pid 1076] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1075] <... set_robust_list resumed>) = 0 [pid 1073] mknod(0x20000000, 000 [pid 1072] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1076] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1073] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1077] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1076] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1075] rt_sigprocmask(SIG_SETMASK, [], [pid 1073] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1076] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1073] <... futex resumed>) = 1 [pid 1072] <... futex resumed>) = 0 [pid 1077] <... prctl resumed>) = 0 [pid 1076] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1075] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1073] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1072] exit_group(0 [pid 1077] setpgid(0, 0 [pid 1076] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1075] memfd_create("syzkaller", 0 [pid 1073] <... futex resumed>) = ? [pid 1072] <... exit_group resumed>) = ? [pid 1077] <... setpgid resumed>) = 0 [pid 1076] <... mprotect resumed>) = 0 [pid 1075] <... memfd_create resumed>) = 3 [pid 1073] +++ exited with 0 +++ [pid 1072] +++ exited with 0 +++ [pid 1077] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1076] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1075] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1077] <... openat resumed>) = 3 [pid 1076] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1075] <... mmap resumed>) = 0x7fe6f03b1000 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1072, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1077] write(3, "1000", 4 [pid 1076] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[1079]}, 88) = 1079 [pid 1076] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1076] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1076] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1079 attached [pid 1079] set_robust_list(0x7fe6f87d19a0, 24 [pid 1075] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 1077] <... write resumed>) = 4 [pid 1079] <... set_robust_list resumed>) = 0 [pid 1079] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1075] <... write resumed>) = 262144 [pid 1077] close(3 [pid 1075] munmap(0x7fe6f03b1000, 138412032 [pid 1077] <... close resumed>) = 0 executing program [pid 1077] write(1, "executing program\n", 18 [pid 1075] <... munmap resumed>) = 0 [pid 1077] <... write resumed>) = 18 [pid 1075] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1077] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1075] <... openat resumed>) = 4 [pid 1077] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1075] ioctl(4, LOOP_SET_FD, 3 [pid 1077] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1075] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1077] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1075] ioctl(4, LOOP_CLR_FD [pid 1077] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1075] <... ioctl resumed>) = 0 [pid 1077] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0./strace-static-x86_64: Process 1078 attached ) = 0x7fe6f87b1000 [pid 1078] set_robust_list(0x5555636e06a0, 24 [pid 1077] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1078] <... set_robust_list resumed>) = 0 [pid 1077] <... mprotect resumed>) = 0 [pid 1077] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1078] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1077] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1078] <... prctl resumed>) = 0 [pid 1077] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1078] setpgid(0, 0) = 0 [pid 1077] <... clone3 resumed> => {parent_tid=[1080]}, 88) = 1080 [pid 1077] rt_sigprocmask(SIG_SETMASK, [], [pid 1078] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1077] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1075] ioctl(4, LOOP_SET_FD, 3 [pid 1077] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1075] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1077] <... futex resumed>) = 0 [pid 1075] close(4 [pid 1077] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1075] <... close resumed>) = 0 [pid 1078] <... openat resumed>) = 3 [pid 1075] close(3 [pid 1079] memfd_create("syzkaller", 0) = 3 [pid 1079] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1075] <... close resumed>) = 0 [pid 1078] write(3, "1000", 4 [pid 1075] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1078] <... write resumed>) = 4 [pid 1075] <... futex resumed>) = 1 [pid 1074] <... futex resumed>) = 0 [pid 1078] close(3 [pid 1075] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1074] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1078] <... close resumed>) = 0 [pid 1075] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1074] <... futex resumed>) = 0 executing program [pid 1078] write(1, "executing program\n", 18 [pid 1075] chdir("./file0" [pid 1074] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1078] <... write resumed>) = 18 [pid 1075] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1075] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1078] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1075] <... futex resumed>) = 1 [pid 1074] <... futex resumed>) = 0 [pid 1078] <... futex resumed>) = 0 [pid 1075] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1074] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1078] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1075] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1074] <... futex resumed>) = 0 [pid 1078] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1075] creat("./bus", 000 [pid 1074] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... restart_syscall resumed>) = 0 [pid 1078] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1075] <... creat resumed>) = 3 [pid 1075] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1078] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1075] <... futex resumed>) = 1 [pid 1074] <... futex resumed>) = 0 [pid 1078] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1075] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1074] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1078] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1075] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1074] <... futex resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1078] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1075] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1074] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1075] <... openat resumed>) = 4 [pid 306] <... openat resumed>) = 3 [pid 1078] <... mprotect resumed>) = 0 [pid 1075] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] ioctl(3, LOOP_CLR_FD [pid 1078] rt_sigprocmask(SIG_BLOCK, ~[], ./strace-static-x86_64: Process 1080 attached [], 8) = 0 [pid 1075] <... futex resumed>) = 1 [pid 1074] <... futex resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 1078] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1075] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1074] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1080] set_robust_list(0x7fe6f87d19a0, 24 [pid 306] close(3 [pid 1075] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1080] <... set_robust_list resumed>) = 0 [pid 1074] <... futex resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 1079] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1078] <... clone3 resumed> => {parent_tid=[1081]}, 88) = 1081 [pid 1075] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1074] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1079] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 1079] munmap(0x7fe6f03b1000, 138412032 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1079] <... munmap resumed>) = 0 [pid 1079] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 1080] rt_sigprocmask(SIG_SETMASK, [], [pid 1078] rt_sigprocmask(SIG_SETMASK, [], [pid 1075] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1080] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1078] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1075] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1082 [pid 1080] memfd_create("syzkaller", 0 [pid 1078] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1075] <... futex resumed>) = 1 [pid 1074] <... futex resumed>) = 0 [pid 1078] <... futex resumed>) = 0 [pid 1075] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1074] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1078] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1075] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1074] <... futex resumed>) = 0 [pid 1080] <... memfd_create resumed>) = 3 [pid 1075] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1074] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1080] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1075] <... open resumed>) = 5 [pid 1080] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1075] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1074] <... futex resumed>) = 0 [pid 1075] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1074] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1075] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1074] <... futex resumed>) = 0 [pid 1075] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1074] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1079] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1075] <... mmap resumed>) = 0x20000000 [pid 1079] ioctl(4, LOOP_CLR_FD) = 0 [pid 1075] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1074] <... futex resumed>) = 0 [pid 1075] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1074] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1075] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1074] <... futex resumed>) = 0 [pid 1075] memfd_create("syzkaller", 0 [pid 1074] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1075] <... memfd_create resumed>) = 6 [pid 1075] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1080] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1075] <... mmap resumed>) = 0x7fe6f03b1000 ./strace-static-x86_64: Process 1081 attached [pid 1081] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1081] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1081] memfd_create("syzkaller", 0 [pid 1075] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1079] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1079] close(4) = 0 [pid 1075] <... write resumed>) = 131072 [pid 1075] munmap(0x7fe6f03b1000, 138412032 [pid 1079] close(3) = 0 [pid 1075] <... munmap resumed>) = 0 [pid 1075] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 7 [pid 1075] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 1082 attached [pid 1075] ioctl(7, LOOP_CLR_FD [pid 1079] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1075] <... ioctl resumed>) = 0 [pid 1082] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1079] <... futex resumed>) = 1 [pid 1076] <... futex resumed>) = 0 [pid 1079] chdir("./file0" [pid 1076] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1079] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1076] <... futex resumed>) = 0 [pid 1079] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1076] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1079] <... futex resumed>) = 0 [pid 1076] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1079] creat("./bus", 000 [pid 1076] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1082] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1079] <... creat resumed>) = 3 [pid 1076] <... futex resumed>) = 0 [pid 1080] <... write resumed>) = 262144 [pid 1082] <... prctl resumed>) = 0 [pid 1079] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1076] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1075] ioctl(7, LOOP_SET_FD, 6 [pid 1082] setpgid(0, 0 [pid 1080] munmap(0x7fe6f03b1000, 138412032 [pid 1079] <... futex resumed>) = 0 [pid 1076] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1075] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1079] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1076] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1075] close(7 [pid 1082] <... setpgid resumed>) = 0 [pid 1080] <... munmap resumed>) = 0 [pid 1079] <... openat resumed>) = 4 [pid 1076] <... futex resumed>) = 0 [pid 1082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1080] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1079] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1076] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1075] <... close resumed>) = 0 [pid 1082] <... openat resumed>) = 3 [pid 1081] <... memfd_create resumed>) = 3 [pid 1080] <... openat resumed>) = 4 [pid 1079] <... futex resumed>) = 0 [pid 1076] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1075] close(6 [pid 1081] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1079] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1076] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1081] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1076] <... futex resumed>) = 0 [pid 1076] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1081] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1082] write(3, "1000", 4 [pid 1080] ioctl(4, LOOP_SET_FD, 3 [pid 1079] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1075] <... close resumed>) = 0 [pid 1082] <... write resumed>) = 4 [pid 1080] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1075] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 1082] close(3 [pid 1080] ioctl(4, LOOP_CLR_FD [pid 1082] <... close resumed>) = 0 [pid 1079] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1080] <... ioctl resumed>) = 0 [pid 1075] <... futex resumed>) = 1 [pid 1074] <... futex resumed>) = 0 [pid 1082] write(1, "executing program\n", 18 [pid 1079] <... futex resumed>) = 1 [pid 1076] <... futex resumed>) = 0 [pid 1075] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1074] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1082] <... write resumed>) = 18 [pid 1079] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1076] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1075] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1074] <... futex resumed>) = 0 [pid 1082] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1079] <... open resumed>) = 5 [pid 1076] <... futex resumed>) = 0 [pid 1075] mknod(0x20000000, 000 [pid 1074] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1082] <... futex resumed>) = 0 [pid 1079] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1076] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1075] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1082] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1080] ioctl(4, LOOP_SET_FD, 3 [pid 1079] <... futex resumed>) = 0 [pid 1076] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1075] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1082] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1080] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1079] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1076] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1075] <... futex resumed>) = 1 [pid 1074] <... futex resumed>) = 0 [pid 1079] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1076] <... futex resumed>) = 0 [pid 1074] exit_group(0 [pid 1079] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1076] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1074] <... exit_group resumed>) = ? [pid 1079] <... mmap resumed>) = 0x20000000 [pid 1079] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1076] <... futex resumed>) = 0 [pid 1079] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1076] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1079] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1076] <... futex resumed>) = 0 [pid 1081] <... write resumed>) = 262144 [pid 1079] memfd_create("syzkaller", 0 [pid 1076] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1081] munmap(0x7fe6f03b1000, 138412032 [pid 1079] <... memfd_create resumed>) = 6 [pid 1081] <... munmap resumed>) = 0 [pid 1079] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1081] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1079] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1082] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1081] <... openat resumed>) = 4 [pid 1080] close(4 [pid 1079] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1081] ioctl(4, LOOP_SET_FD, 3 [pid 1079] <... write resumed>) = 131072 [pid 1081] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1079] munmap(0x7fe6f03b1000, 138412032 [pid 1081] ioctl(4, LOOP_CLR_FD [pid 1079] <... munmap resumed>) = 0 [pid 1081] <... ioctl resumed>) = 0 [pid 1079] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 7 [pid 1079] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1079] ioctl(7, LOOP_CLR_FD) = 0 [pid 1081] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1081] close(4) = 0 [pid 1081] close(3 [pid 1082] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1081] <... close resumed>) = 0 [pid 1080] <... close resumed>) = 0 [pid 1075] +++ exited with 0 +++ [pid 1074] +++ exited with 0 +++ [pid 1082] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1081] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1080] close(3 [pid 1079] ioctl(7, LOOP_SET_FD, 6 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1074, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1082] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1081] <... futex resumed>) = 1 [pid 1079] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1081] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1079] close(7 [pid 1082] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1080] <... close resumed>) = 0 [pid 1079] <... close resumed>) = 0 [pid 1078] <... futex resumed>) = 0 [pid 1082] <... mprotect resumed>) = 0 [pid 1080] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1079] close(6 [pid 1078] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1082] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1080] <... futex resumed>) = 1 [pid 1079] <... close resumed>) = 0 [pid 1077] <... futex resumed>) = 0 [pid 1078] <... futex resumed>) = 1 [pid 1082] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1081] <... futex resumed>) = 0 [pid 1080] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1079] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1078] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1077] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1082] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1081] chdir("./file0" [pid 1080] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1079] <... futex resumed>) = 1 [pid 1077] <... futex resumed>) = 0 [pid 1076] <... futex resumed>) = 0 [pid 1081] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1080] chdir("./file0" [pid 1079] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1077] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1076] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1082] <... clone3 resumed> => {parent_tid=[1083]}, 88) = 1083 [pid 1081] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1080] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1079] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1076] <... futex resumed>) = 0 [pid 1081] <... futex resumed>) = 1 [pid 1079] mknod(0x20000000, 000 [pid 1078] <... futex resumed>) = 0 [pid 1076] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1081] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1079] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1078] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1081] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1079] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1078] <... futex resumed>) = 0 [pid 1081] creat("./bus", 000 [pid 1079] <... futex resumed>) = 1 [pid 1078] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1076] <... futex resumed>) = 0 [pid 1081] <... creat resumed>) = 3 [pid 1079] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1076] exit_group(0 [pid 1081] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1079] <... futex resumed>) = ? [pid 1076] <... exit_group resumed>) = ? [pid 1082] rt_sigprocmask(SIG_SETMASK, [], [pid 1081] <... futex resumed>) = 1 [pid 1080] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1079] +++ exited with 0 +++ [pid 1078] <... futex resumed>) = 0 [pid 1076] +++ exited with 0 +++ [pid 1082] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1081] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1080] <... futex resumed>) = 1 [pid 1078] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1077] <... futex resumed>) = 0 [pid 1082] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1081] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1080] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1078] <... futex resumed>) = 0 [pid 1077] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... restart_syscall resumed>) = 0 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1076, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1082] <... futex resumed>) = 0 [pid 1081] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1080] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1078] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1077] <... futex resumed>) = 0 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 1082] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1081] <... openat resumed>) = 4 [pid 1080] creat("./bus", 000 [pid 1077] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1081] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1080] <... creat resumed>) = 3 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1081] <... futex resumed>) = 1 [pid 1080] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1078] <... futex resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 1081] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1080] <... futex resumed>) = 1 [pid 1078] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1077] <... futex resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 1081] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1080] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1078] <... futex resumed>) = 0 [pid 1077] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... ioctl resumed>) = 0 [pid 1081] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1080] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1078] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1077] <... futex resumed>) = 0 [pid 305] close(3./strace-static-x86_64: Process 1083 attached [pid 1081] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1080] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1077] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... close resumed>) = 0 [pid 1081] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1080] <... openat resumed>) = 4 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1083] set_robust_list(0x7fe6f87d19a0, 24 [pid 1081] <... futex resumed>) = 1 [pid 1080] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1078] <... futex resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 1083] <... set_robust_list resumed>) = 0 [pid 1081] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1080] <... futex resumed>) = 1 [pid 1078] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1077] <... futex resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1084 [pid 1083] rt_sigprocmask(SIG_SETMASK, [], [pid 1081] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1080] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1078] <... futex resumed>) = 0 [pid 1077] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1083] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1081] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1080] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1078] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1077] <... futex resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1083] memfd_create("syzkaller", 0 [pid 1081] <... open resumed>) = 5 [pid 1080] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1077] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1083] <... memfd_create resumed>) = 3 [pid 1081] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... openat resumed>) = 3 [pid 1083] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1081] <... futex resumed>) = 1 [pid 1080] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1078] <... futex resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 1083] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1081] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1080] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1078] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... ioctl resumed>) = 0 [pid 1081] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1080] <... futex resumed>) = 1 [pid 1078] <... futex resumed>) = 0 [pid 1077] <... futex resumed>) = 0 [pid 304] close(3 [pid 1081] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1080] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1078] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1077] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1081] <... mmap resumed>) = 0x20000000 [pid 1080] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1077] <... futex resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 1081] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1080] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1077] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1081] <... futex resumed>) = 1 [pid 1078] <... futex resumed>) = 0 [pid 1081] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1080] <... open resumed>) = 5 [pid 1078] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1083] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1081] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1080] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1078] <... futex resumed>) = 0 [pid 1081] memfd_create("syzkaller", 0 [pid 1080] <... futex resumed>) = 1 [pid 1078] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1077] <... futex resumed>) = 0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1085 [pid 1081] <... memfd_create resumed>) = 6 [pid 1080] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1077] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1081] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1080] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1077] <... futex resumed>) = 0 [pid 1083] <... write resumed>) = 262144 [pid 1081] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1080] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1077] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1081] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 1080] <... mmap resumed>) = 0x20000000 [pid 1081] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1080] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1081] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1080] <... futex resumed>) = 1 [pid 1077] <... futex resumed>) = 0 [pid 1081] <... openat resumed>) = 7 [pid 1080] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1077] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1081] ioctl(7, LOOP_SET_FD, 6 [pid 1080] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1077] <... futex resumed>) = 0 [pid 1081] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1080] memfd_create("syzkaller", 0 [pid 1077] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1081] ioctl(7, LOOP_CLR_FD [pid 1080] <... memfd_create resumed>) = 6 [pid 1081] <... ioctl resumed>) = 0 [pid 1080] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1083] munmap(0x7fe6f03b1000, 138412032 [pid 1080] <... mmap resumed>) = 0x7fe6f03b1000 ./strace-static-x86_64: Process 1085 attached [pid 1085] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1085] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1085] setpgid(0, 0 [pid 1081] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1080] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1081] close(7) = 0 [pid 1081] close(6 [pid 1083] <... munmap resumed>) = 0 [pid 1081] <... close resumed>) = 0 [pid 1080] <... write resumed>) = 131072 [pid 1083] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1081] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1080] munmap(0x7fe6f03b1000, 138412032./strace-static-x86_64: Process 1084 attached [pid 1081] <... futex resumed>) = 1 [pid 1078] <... futex resumed>) = 0 [pid 1083] <... openat resumed>) = 4 [pid 1081] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1080] <... munmap resumed>) = 0 [pid 1078] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1084] set_robust_list(0x5555636e06a0, 24 [pid 1083] ioctl(4, LOOP_SET_FD, 3 [pid 1081] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1080] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1078] <... futex resumed>) = 0 [pid 1081] mknod(0x20000000, 000 [pid 1080] <... openat resumed>) = 7 [pid 1078] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1085] <... setpgid resumed>) = 0 [pid 1084] <... set_robust_list resumed>) = 0 [pid 1083] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1081] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1080] ioctl(7, LOOP_SET_FD, 6 [pid 1085] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1084] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1083] ioctl(4, LOOP_CLR_FD [pid 1081] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1080] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1085] <... openat resumed>) = 3 [pid 1084] <... prctl resumed>) = 0 [pid 1083] <... ioctl resumed>) = 0 [pid 1081] <... futex resumed>) = 1 [pid 1080] ioctl(7, LOOP_CLR_FD [pid 1078] <... futex resumed>) = 0 [pid 1085] write(3, "1000", 4 [pid 1084] setpgid(0, 0 [pid 1081] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1080] <... ioctl resumed>) = 0 [pid 1078] exit_group(0 [pid 1085] <... write resumed>) = 4 [pid 1084] <... setpgid resumed>) = 0 [pid 1081] <... futex resumed>) = ? [pid 1078] <... exit_group resumed>) = ? [pid 1085] close(3 [pid 1084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1081] +++ exited with 0 +++ [pid 1078] +++ exited with 0 +++ [pid 1085] <... close resumed>) = 0 [pid 1084] <... openat resumed>) = 3 [pid 1083] ioctl(4, LOOP_SET_FD, 3 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1078, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- executing program [pid 1085] write(1, "executing program\n", 18 [pid 1084] write(3, "1000", 4 [pid 1083] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1080] ioctl(7, LOOP_SET_FD, 6 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 1085] <... write resumed>) = 18 [pid 1085] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1085] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1085] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1085] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1085] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1085] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1085] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[1086]}, 88) = 1086 [pid 1085] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1085] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1085] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1086 attached [pid 1086] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1086] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1080] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1084] <... write resumed>) = 4 [pid 1083] close(4 [pid 1080] close(7 [pid 1084] close(3 [pid 1083] <... close resumed>) = 0 [pid 1084] <... close resumed>) = 0 [pid 1080] <... close resumed>) = 0 [pid 1083] close(3 [pid 1084] write(1, "executing program\n", 18 [pid 1080] close(6executing program [pid 302] <... restart_syscall resumed>) = 0 [pid 1083] <... close resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 1084] <... write resumed>) = 18 [pid 1083] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1080] <... close resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 1084] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1083] <... futex resumed>) = 1 [pid 1082] <... futex resumed>) = 0 [pid 1080] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... ioctl resumed>) = 0 [pid 1084] <... futex resumed>) = 0 [pid 1083] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1082] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1080] <... futex resumed>) = 1 [pid 1077] <... futex resumed>) = 0 [pid 302] close(3 [pid 1084] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1083] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1082] <... futex resumed>) = 0 [pid 1080] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1077] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... close resumed>) = 0 [pid 1084] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1083] chdir("./file0" [pid 1082] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1080] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1077] <... futex resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1084] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1083] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1080] mknod(0x20000000, 000 [pid 1077] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1084] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1083] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1080] <... mknod resumed>) = -1 EEXIST (File exists) [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1087 [pid 1084] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1083] <... futex resumed>) = 1 [pid 1082] <... futex resumed>) = 0 [pid 1080] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1084] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1083] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1082] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1080] <... futex resumed>) = 1 [pid 1077] <... futex resumed>) = 0 [pid 1084] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1083] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1082] <... futex resumed>) = 0 [pid 1080] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1084] <... mprotect resumed>) = 0 [pid 1083] creat("./bus", 000 [pid 1082] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1077] exit_group(0 [pid 1084] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1083] <... creat resumed>) = 3 [pid 1084] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1083] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1080] <... futex resumed>) = ? [pid 1077] <... exit_group resumed>) = ? [pid 1084] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1083] <... futex resumed>) = 1 [pid 1082] <... futex resumed>) = 0 [pid 1080] +++ exited with 0 +++ [pid 1086] memfd_create("syzkaller", 0) = 3 [pid 1083] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1082] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1077] +++ exited with 0 +++ [pid 1084] <... clone3 resumed> => {parent_tid=[1088]}, 88) = 1088 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1077, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1083] <... openat resumed>) = 4 [pid 1082] <... futex resumed>) = 0 [pid 1084] rt_sigprocmask(SIG_SETMASK, [], [pid 1083] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1082] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1084] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1083] <... futex resumed>) = 0 [pid 1082] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1084] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1083] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1082] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1084] <... futex resumed>) = 0 [pid 1083] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1082] <... futex resumed>) = 0 [pid 1084] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1083] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1082] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1086] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1083] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1083] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1082] <... futex resumed>) = 0 [pid 1083] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1082] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1083] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1082] <... futex resumed>) = 0 [pid 1083] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1082] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1083] <... open resumed>) = 5 ./strace-static-x86_64: Process 1087 attached [pid 1083] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1086] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 303] <... restart_syscall resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 303] ioctl(3, LOOP_CLR_FD) = 0 [pid 303] close(3) = 0 [pid 1083] <... futex resumed>) = 1 [pid 1082] <... futex resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1087] set_robust_list(0x5555636e06a0, 24 [pid 1083] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1082] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1087] <... set_robust_list resumed>) = 0 [pid 1083] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1082] <... futex resumed>) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1089 [pid 1087] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1083] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1082] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1087] <... prctl resumed>) = 0 [pid 1083] <... mmap resumed>) = 0x20000000 [pid 1087] setpgid(0, 0 [pid 1083] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1087] <... setpgid resumed>) = 0 [pid 1083] <... futex resumed>) = 1 [pid 1082] <... futex resumed>) = 0 [pid 1083] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1082] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1083] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1082] <... futex resumed>) = 0 [pid 1087] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1083] memfd_create("syzkaller", 0 [pid 1082] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1083] <... memfd_create resumed>) = 6 [pid 1087] <... openat resumed>) = 3 [pid 1083] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1087] write(3, "1000", 4 [pid 1083] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1086] <... write resumed>) = 262144 [pid 1083] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1087] <... write resumed>) = 4 [pid 1086] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1083] <... write resumed>) = 131072 [pid 1087] close(3 [pid 1083] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1087] <... close resumed>) = 0 [pid 1083] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1087] write(1, "executing program\n", 18 [pid 1083] <... openat resumed>) = 7 executing program [pid 1087] <... write resumed>) = 18 [pid 1083] ioctl(7, LOOP_SET_FD, 6./strace-static-x86_64: Process 1089 attached [pid 1087] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1083] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1089] set_robust_list(0x5555636e06a0, 24 [pid 1087] <... futex resumed>) = 0 [pid 1083] ioctl(7, LOOP_CLR_FD [pid 1086] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 1089] <... set_robust_list resumed>) = 0 [pid 1087] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1083] <... ioctl resumed>) = 0 [pid 1087] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1089] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1087] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1089] <... prctl resumed>) = 0 [pid 1087] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1089] setpgid(0, 0 [pid 1087] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1089] <... setpgid resumed>) = 0 [pid 1087] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1086] ioctl(4, LOOP_SET_FD, 3 [pid 1087] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1089] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1087] <... mprotect resumed>) = 0 [pid 1087] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1086] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1089] <... openat resumed>) = 3 [pid 1087] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1089] write(3, "1000", 4 [pid 1087] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1089] <... write resumed>) = 4 [pid 1083] ioctl(7, LOOP_SET_FD, 6executing program [pid 1089] close(3 [pid 1086] ioctl(4, LOOP_CLR_FD [pid 1083] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1089] <... close resumed>) = 0 [pid 1087] <... clone3 resumed> => {parent_tid=[1091]}, 88) = 1091 [pid 1083] close(7 [pid 1089] write(1, "executing program\n", 18 [pid 1087] rt_sigprocmask(SIG_SETMASK, [], [pid 1083] <... close resumed>) = 0 [pid 1087] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1089] <... write resumed>) = 18 [pid 1087] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1083] close(6 [pid 1087] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1088 attached [pid 1086] <... ioctl resumed>) = 0 [pid 1088] set_robust_list(0x7fe6f87d19a0, 24 [pid 1087] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1083] <... close resumed>) = 0 [pid 1089] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1083] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1089] <... futex resumed>) = 0 [pid 1088] <... set_robust_list resumed>) = 0 [pid 1083] <... futex resumed>) = 1 [pid 1082] <... futex resumed>) = 0 [pid 1089] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1083] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1082] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1089] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1083] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1082] <... futex resumed>) = 0 [pid 1089] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1083] mknod(0x20000000, 000 [pid 1082] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1089] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1083] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1089] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1088] rt_sigprocmask(SIG_SETMASK, [], [pid 1083] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1089] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1088] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1083] <... futex resumed>) = 1 [pid 1082] <... futex resumed>) = 0 [pid 1089] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1083] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1082] exit_group(0 [pid 1089] <... mprotect resumed>) = 0 [pid 1083] <... futex resumed>) = ? [pid 1082] <... exit_group resumed>) = ? [pid 1088] memfd_create("syzkaller", 0 [pid 1083] +++ exited with 0 +++ [pid 1088] <... memfd_create resumed>) = 3 [pid 1086] ioctl(4, LOOP_SET_FD, 3 [pid 1082] +++ exited with 0 +++ [pid 1089] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1088] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1086] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1082, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1088] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1086] close(4 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 1089] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1088] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1086] <... close resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 1091 attached [pid 1089] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1086] close(3 [pid 1091] set_robust_list(0x7fe6f87d19a0, 24 [pid 1086] <... close resumed>) = 0 [pid 1091] <... set_robust_list resumed>) = 0 [pid 1089] <... clone3 resumed> => {parent_tid=[1092]}, 88) = 1092 [pid 1086] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1091] rt_sigprocmask(SIG_SETMASK, [], [pid 1089] rt_sigprocmask(SIG_SETMASK, [], [pid 1086] <... futex resumed>) = 1 [pid 1085] <... futex resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 1091] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1089] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1088] <... write resumed>) = 262144 [pid 1086] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1085] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] ioctl(3, LOOP_CLR_FD [pid 1088] munmap(0x7fe6f03b1000, 138412032 [pid 1086] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1085] <... futex resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 1088] <... munmap resumed>) = 0 [pid 1086] chdir("./file0" [pid 1085] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] close(3 [pid 1088] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1086] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 306] <... close resumed>) = 0 [pid 1088] <... openat resumed>) = 4 [pid 1086] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1088] ioctl(4, LOOP_SET_FD, 3 [pid 1086] <... futex resumed>) = 1 [pid 1085] <... futex resumed>) = 0 [pid 1091] memfd_create("syzkaller", 0 [pid 1089] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1088] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1086] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1085] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1093 [pid 1091] <... memfd_create resumed>) = 3 [pid 1089] <... futex resumed>) = 0 [pid 1088] ioctl(4, LOOP_CLR_FD [pid 1086] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1085] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1092 attached [pid 1091] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1089] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1088] <... ioctl resumed>) = 0 [pid 1086] creat("./bus", 000 [pid 1085] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1092] set_robust_list(0x7fe6f87d19a0, 24 [pid 1091] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1086] <... creat resumed>) = 3 [pid 1086] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1085] <... futex resumed>) = 0 [pid 1086] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1085] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1086] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1085] <... futex resumed>) = 0 [pid 1086] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1085] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1092] <... set_robust_list resumed>) = 0 [pid 1091] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1088] ioctl(4, LOOP_SET_FD, 3 [pid 1086] <... openat resumed>) = 4 [pid 1088] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1086] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1088] close(4 [pid 1086] <... futex resumed>) = 1 [pid 1085] <... futex resumed>) = 0 [pid 1088] <... close resumed>) = 0 [pid 1086] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1085] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1092] rt_sigprocmask(SIG_SETMASK, [], [pid 1091] <... write resumed>) = 262144 [pid 1088] close(3 [pid 1086] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1085] <... futex resumed>) = 0 [pid 1092] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1091] munmap(0x7fe6f03b1000, 138412032 [pid 1088] <... close resumed>) = 0 [pid 1086] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1085] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1092] memfd_create("syzkaller", 0 [pid 1091] <... munmap resumed>) = 0 [pid 1088] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1086] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1092] <... memfd_create resumed>) = 3 [pid 1091] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1088] <... futex resumed>) = 1 [pid 1086] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1084] <... futex resumed>) = 0 [pid 1092] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1091] <... openat resumed>) = 4 [pid 1088] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1086] <... futex resumed>) = 1 [pid 1085] <... futex resumed>) = 0 [pid 1084] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1092] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1091] ioctl(4, LOOP_SET_FD, 3 [pid 1088] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1086] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1085] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1084] <... futex resumed>) = 0 [pid 1088] chdir("./file0" [pid 1086] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1085] <... futex resumed>) = 0 [pid 1088] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1086] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1085] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1088] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1086] <... open resumed>) = 5 [pid 1088] <... futex resumed>) = 0 [pid 1086] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1088] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1086] <... futex resumed>) = 1 [pid 1085] <... futex resumed>) = 0 [pid 1086] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1085] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1086] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1085] <... futex resumed>) = 0 [pid 1086] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1085] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1086] <... mmap resumed>) = 0x20000000 [pid 1086] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1093 attached ) = 1 [pid 1085] <... futex resumed>) = 0 [pid 1093] set_robust_list(0x5555636e06a0, 24 [pid 1086] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1085] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1093] <... set_robust_list resumed>) = 0 [pid 1086] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1085] <... futex resumed>) = 0 [pid 1093] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1086] memfd_create("syzkaller", 0 [pid 1085] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1093] <... prctl resumed>) = 0 [pid 1091] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1086] <... memfd_create resumed>) = 6 [pid 1084] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1093] setpgid(0, 0 [pid 1091] ioctl(4, LOOP_CLR_FD [pid 1086] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1084] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1093] <... setpgid resumed>) = 0 [pid 1091] <... ioctl resumed>) = 0 [pid 1086] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1084] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1093] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1092] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1088] <... futex resumed>) = 0 [pid 1086] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1084] <... futex resumed>) = 1 [pid 1093] <... openat resumed>) = 3 [pid 1092] <... write resumed>) = 262144 [pid 1088] creat("./bus", 000 [pid 1086] <... write resumed>) = 131072 [pid 1084] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1093] write(3, "1000", 4 [pid 1092] munmap(0x7fe6f03b1000, 138412032 [pid 1088] <... creat resumed>) = 3 [pid 1086] munmap(0x7fe6f03b1000, 138412032 [pid 1093] <... write resumed>) = 4 [pid 1092] <... munmap resumed>) = 0 [pid 1091] ioctl(4, LOOP_SET_FD, 3 [pid 1088] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1086] <... munmap resumed>) = 0 [pid 1093] close(3 [pid 1092] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1091] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1088] <... futex resumed>) = 1 [pid 1086] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1084] <... futex resumed>) = 0 [pid 1093] <... close resumed>) = 0 [pid 1088] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1086] <... openat resumed>) = 7 executing program [pid 1093] write(1, "executing program\n", 18 [pid 1092] <... openat resumed>) = 4 [pid 1091] close(4 [pid 1086] ioctl(7, LOOP_SET_FD, 6 [pid 1084] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1093] <... write resumed>) = 18 [pid 1086] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1093] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1086] ioctl(7, LOOP_CLR_FD [pid 1093] <... futex resumed>) = 0 [pid 1086] <... ioctl resumed>) = 0 [pid 1093] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1093] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1093] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1093] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1093] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1093] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1086] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1093] <... clone3 resumed> => {parent_tid=[1094]}, 88) = 1094 [pid 1086] close(7 [pid 1093] rt_sigprocmask(SIG_SETMASK, [], [pid 1086] <... close resumed>) = 0 [pid 1093] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1086] close(6 [pid 1093] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1092] ioctl(4, LOOP_SET_FD, 3 [pid 1091] <... close resumed>) = 0 [pid 1088] <... futex resumed>) = 0 [pid 1086] <... close resumed>) = 0 [pid 1084] <... futex resumed>) = 1 [pid 1093] <... futex resumed>) = 0 [pid 1092] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1091] close(3 [pid 1088] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1086] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1084] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1093] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1092] ioctl(4, LOOP_CLR_FD [pid 1091] <... close resumed>) = 0 [pid 1088] <... openat resumed>) = 4 [pid 1086] <... futex resumed>) = 1 [pid 1085] <... futex resumed>) = 0 [pid 1092] <... ioctl resumed>) = 0 [pid 1091] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1088] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1086] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1085] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1091] <... futex resumed>) = 1 [pid 1088] <... futex resumed>) = 1 [pid 1087] <... futex resumed>) = 0 [pid 1086] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1085] <... futex resumed>) = 0 [pid 1084] <... futex resumed>) = 0 [pid 1091] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1088] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1087] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1086] mknod(0x20000000, 000 [pid 1085] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1084] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1091] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1088] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1087] <... futex resumed>) = 0 [pid 1086] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1084] <... futex resumed>) = 0 [pid 1091] chdir("./file0" [pid 1088] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1087] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1086] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1084] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1092] ioctl(4, LOOP_SET_FD, 3 [pid 1091] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1088] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1086] <... futex resumed>) = 1 [pid 1085] <... futex resumed>) = 0 [pid 1092] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1091] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1088] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1086] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1085] exit_group(0 [pid 1092] close(4 [pid 1091] <... futex resumed>) = 1 [pid 1088] <... futex resumed>) = 1 [pid 1087] <... futex resumed>) = 0 [pid 1086] <... futex resumed>) = ? [pid 1085] <... exit_group resumed>) = ? [pid 1084] <... futex resumed>) = 0 [pid 1092] <... close resumed>) = 0 [pid 1091] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1088] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1087] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1086] +++ exited with 0 +++ [pid 1085] +++ exited with 0 +++ [pid 1084] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1092] close(3 [pid 1091] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1088] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1087] <... futex resumed>) = 0 [pid 1084] <... futex resumed>) = 0 [pid 1088] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1092] <... close resumed>) = 0 [pid 1091] creat("./bus", 000 [pid 1088] <... open resumed>) = 5 [pid 1087] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1084] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1085, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1092] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1091] <... creat resumed>) = 3 [pid 1088] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1084] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 304] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 1094 attached [pid 1092] <... futex resumed>) = 1 [pid 1091] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1089] <... futex resumed>) = 0 [pid 1088] <... futex resumed>) = 0 [pid 1084] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1094] set_robust_list(0x7fe6f87d19a0, 24 [pid 1092] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1091] <... futex resumed>) = 1 [pid 1089] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1088] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1087] <... futex resumed>) = 0 [pid 1084] <... futex resumed>) = 0 [pid 1094] <... set_robust_list resumed>) = 0 [pid 1092] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1091] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1089] <... futex resumed>) = 0 [pid 1088] <... mmap resumed>) = 0x20000000 [pid 1087] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1084] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1094] rt_sigprocmask(SIG_SETMASK, [], [pid 1092] chdir("./file0" [pid 1091] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1089] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1088] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1087] <... futex resumed>) = 0 [pid 1084] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1094] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1092] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1091] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1088] <... futex resumed>) = 0 [pid 1087] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1084] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1094] memfd_create("syzkaller", 0 [pid 1092] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1091] <... openat resumed>) = 4 [pid 1088] memfd_create("syzkaller", 0 [pid 1084] <... futex resumed>) = 0 [pid 1094] <... memfd_create resumed>) = 3 [pid 1092] <... futex resumed>) = 1 [pid 1091] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1089] <... futex resumed>) = 0 [pid 1088] <... memfd_create resumed>) = 6 [pid 1084] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1094] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1092] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1091] <... futex resumed>) = 1 [pid 1089] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1088] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1087] <... futex resumed>) = 0 [pid 1094] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1092] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1091] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1089] <... futex resumed>) = 0 [pid 1088] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1087] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1094] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1092] creat("./bus", 000 [pid 1091] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1089] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1088] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1087] <... futex resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 1092] <... creat resumed>) = 3 [pid 1091] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1088] <... write resumed>) = 131072 [pid 1087] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1092] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1088] munmap(0x7fe6f03b1000, 138412032 [pid 1092] <... futex resumed>) = 1 [pid 1089] <... futex resumed>) = 0 [pid 1088] <... munmap resumed>) = 0 [pid 1094] <... write resumed>) = 262144 [pid 1092] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1091] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1089] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1088] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1094] munmap(0x7fe6f03b1000, 138412032 [pid 1092] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1091] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1089] <... futex resumed>) = 0 [pid 1088] <... openat resumed>) = 7 [pid 1094] <... munmap resumed>) = 0 [pid 1092] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1091] <... futex resumed>) = 1 [pid 1089] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1088] ioctl(7, LOOP_SET_FD, 6 [pid 1087] <... futex resumed>) = 0 [pid 304] <... openat resumed>) = 3 [pid 1094] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1092] <... openat resumed>) = 4 [pid 1091] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1088] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1087] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] ioctl(3, LOOP_CLR_FD [pid 1094] <... openat resumed>) = 4 [pid 1092] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1091] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1088] ioctl(7, LOOP_CLR_FD [pid 1087] <... futex resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 1094] ioctl(4, LOOP_SET_FD, 3 [pid 1088] <... ioctl resumed>) = 0 [pid 1094] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1094] ioctl(4, LOOP_CLR_FD) = 0 [pid 1088] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1088] close(7) = 0 [pid 1094] ioctl(4, LOOP_SET_FD, 3 [pid 1088] close(6 [pid 1094] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1088] <... close resumed>) = 0 [pid 1094] close(4 [pid 1092] <... futex resumed>) = 1 [pid 1091] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1089] <... futex resumed>) = 0 [pid 1088] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1087] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] close(3 [pid 1094] <... close resumed>) = 0 [pid 1092] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1091] <... open resumed>) = 5 [pid 1089] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1088] <... futex resumed>) = 1 [pid 1084] <... futex resumed>) = 0 [pid 1094] close(3 [pid 1092] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1091] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1089] <... futex resumed>) = 0 [pid 1088] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1084] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... close resumed>) = 0 [pid 1094] <... close resumed>) = 0 [pid 1092] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1091] <... futex resumed>) = 1 [pid 1089] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1088] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1087] <... futex resumed>) = 0 [pid 1084] <... futex resumed>) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1094] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1091] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1088] mknod(0x20000000, 000 [pid 1087] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1084] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1094] <... futex resumed>) = 1 [pid 1093] <... futex resumed>) = 0 [pid 1091] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1088] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1087] <... futex resumed>) = 0 [pid 1094] chdir("./file0" [pid 1093] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1091] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1088] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1087] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1095 [pid 1094] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1093] <... futex resumed>) = 0 [pid 1091] <... mmap resumed>) = 0x20000000 [pid 1088] <... futex resumed>) = 1 [pid 1084] <... futex resumed>) = 0 [pid 1094] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1093] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1091] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1088] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1084] exit_group(0 [pid 1094] <... futex resumed>) = 0 [pid 1093] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1091] <... futex resumed>) = 1 [pid 1088] <... futex resumed>) = ? [pid 1087] <... futex resumed>) = 0 [pid 1084] <... exit_group resumed>) = ? [pid 1094] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1093] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1092] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1091] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1088] +++ exited with 0 +++ [pid 1087] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1084] +++ exited with 0 +++ [pid 1094] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1093] <... futex resumed>) = 0 [pid 1092] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1091] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1087] <... futex resumed>) = 0 [pid 1094] creat("./bus", 000 [pid 1093] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1092] <... futex resumed>) = 1 [pid 1091] memfd_create("syzkaller", 0 [pid 1089] <... futex resumed>) = 0 [pid 1087] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1084, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1094] <... creat resumed>) = 3 [pid 1092] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1091] <... memfd_create resumed>) = 6 [pid 1089] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR./strace-static-x86_64: Process 1095 attached [pid 1094] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1092] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1091] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1089] <... futex resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 1094] <... futex resumed>) = 1 [pid 1093] <... futex resumed>) = 0 [pid 1092] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1091] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1089] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] ioctl(3, LOOP_CLR_FD [pid 1094] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1093] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1092] <... open resumed>) = 5 [pid 305] <... ioctl resumed>) = 0 [pid 1094] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1093] <... futex resumed>) = 0 [pid 305] close(3 [pid 1094] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1093] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... close resumed>) = 0 [pid 1094] <... openat resumed>) = 4 [pid 1092] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1091] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1094] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1092] <... futex resumed>) = 1 [pid 1091] <... write resumed>) = 131072 [pid 1089] <... futex resumed>) = 0 [pid 1094] <... futex resumed>) = 1 [pid 1093] <... futex resumed>) = 0 [pid 1092] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1091] munmap(0x7fe6f03b1000, 138412032 [pid 1089] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1096 [pid 1094] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1093] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1092] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1091] <... munmap resumed>) = 0 [pid 1089] <... futex resumed>) = 0 [pid 1094] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1093] <... futex resumed>) = 0 [pid 1092] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1091] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1089] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1094] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1093] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1092] <... mmap resumed>) = 0x20000000 [pid 1091] <... openat resumed>) = 7 [pid 1092] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1091] ioctl(7, LOOP_SET_FD, 6 [pid 1092] <... futex resumed>) = 1 [pid 1089] <... futex resumed>) = 0 [pid 1092] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1091] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1089] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1092] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1091] ioctl(7, LOOP_CLR_FD [pid 1089] <... futex resumed>) = 0 [pid 1092] memfd_create("syzkaller", 0 [pid 1091] <... ioctl resumed>) = 0 [pid 1089] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1092] <... memfd_create resumed>) = 6 [pid 1092] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 ./strace-static-x86_64: Process 1096 attached [pid 1096] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1096] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1096] setpgid(0, 0) = 0 [pid 1096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1096] write(3, "1000", 4 [pid 1092] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1096] <... write resumed>) = 4 [pid 1096] close(3 [pid 1092] <... write resumed>) = 131072 [pid 1091] ioctl(7, LOOP_SET_FD, 6 [pid 1092] munmap(0x7fe6f03b1000, 138412032 [pid 1091] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1092] <... munmap resumed>) = 0 [pid 1092] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1091] close(7 [pid 1092] <... openat resumed>) = 7 [pid 1091] <... close resumed>) = 0 [pid 1092] ioctl(7, LOOP_SET_FD, 6 [pid 1091] close(6 [pid 1092] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1096] <... close resumed>) = 0 [pid 1096] write(1, "executing program\n", 18 [pid 1092] ioctl(7, LOOP_CLR_FD [pid 1091] <... close resumed>) = 0 [pid 1095] set_robust_list(0x5555636e06a0, 24 [pid 1092] <... ioctl resumed>) = 0 [pid 1091] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1095] <... set_robust_list resumed>) = 0 [pid 1091] <... futex resumed>) = 1 [pid 1087] <... futex resumed>) = 0 [pid 1091] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1087] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1091] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1087] <... futex resumed>) = 0 [pid 1091] mknod(0x20000000, 000 [pid 1087] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1091] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1095] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1091] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1095] <... prctl resumed>) = 0 [pid 1091] <... futex resumed>) = 1 [pid 1087] <... futex resumed>) = 0 [pid 1091] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1087] exit_group(0 [pid 1095] setpgid(0, 0 [pid 1094] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1091] <... futex resumed>) = ? [pid 1087] <... exit_group resumed>) = ? [pid 1094] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1093] <... futex resumed>) = 0 [pid 1094] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1093] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1094] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1093] <... futex resumed>) = 0 [pid 1092] ioctl(7, LOOP_SET_FD, 6 [pid 1091] +++ exited with 0 +++ [pid 1087] +++ exited with 0 +++ [pid 1095] <... setpgid resumed>) = 0 [pid 1094] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1093] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1092] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1087, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1095] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1094] <... open resumed>) = 5 [pid 1092] close(7executing program [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 1095] <... openat resumed>) = 3 [pid 1094] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1092] <... close resumed>) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 1096] <... write resumed>) = 18 [pid 1095] write(3, "1000", 4 [pid 1094] <... futex resumed>) = 1 [pid 1093] <... futex resumed>) = 0 [pid 1092] close(6 [pid 1096] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1094] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1093] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1096] <... futex resumed>) = 0 [pid 1095] <... write resumed>) = 4 [pid 1094] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1093] <... futex resumed>) = 0 [pid 1092] <... close resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1096] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1095] close(3 [pid 1094] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1093] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1092] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... openat resumed>) = 3 [pid 1096] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1095] <... close resumed>) = 0 [pid 1094] <... mmap resumed>) = 0x20000000 [pid 1092] <... futex resumed>) = 1 [pid 1089] <... futex resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 1096] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1095] write(1, "executing program\n", 18 [pid 1094] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 1092] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1089] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... ioctl resumed>) = 0 [pid 1096] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1095] <... write resumed>) = 18 [pid 1094] <... futex resumed>) = 1 [pid 1093] <... futex resumed>) = 0 [pid 1092] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1089] <... futex resumed>) = 0 [pid 302] close(3 [pid 1096] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1095] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1094] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1093] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1092] mknod(0x20000000, 000 [pid 1089] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] <... close resumed>) = 0 [pid 1096] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1095] <... futex resumed>) = 0 [pid 1094] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1093] <... futex resumed>) = 0 [pid 1092] <... mknod resumed>) = -1 EEXIST (File exists) [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1096] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1095] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1094] memfd_create("syzkaller", 0 [pid 1093] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1092] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1096] <... mprotect resumed>) = 0 [pid 1095] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1094] <... memfd_create resumed>) = 6 [pid 1092] <... futex resumed>) = 1 [pid 1089] <... futex resumed>) = 0 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1097 [pid 1096] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1095] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1094] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1092] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1089] exit_group(0 [pid 1096] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1095] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1094] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1092] <... futex resumed>) = ? [pid 1089] <... exit_group resumed>) = ? [pid 1096] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1095] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1094] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1092] +++ exited with 0 +++ [pid 1095] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1094] <... write resumed>) = 131072 [pid 1089] +++ exited with 0 +++ [pid 1096] <... clone3 resumed> => {parent_tid=[1098]}, 88) = 1098 [pid 1095] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1094] munmap(0x7fe6f03b1000, 138412032 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1089, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1096] rt_sigprocmask(SIG_SETMASK, [], [pid 1095] <... mprotect resumed>) = 0 [pid 1094] <... munmap resumed>) = 0 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1096] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1094] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1096] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1095] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1094] <... openat resumed>) = 7 [pid 1096] <... futex resumed>) = 0 [pid 1095] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1094] ioctl(7, LOOP_SET_FD, 6 [pid 303] <... restart_syscall resumed>) = 0 [pid 1096] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1095] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1094] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1094] ioctl(7, LOOP_CLR_FD [pid 1095] <... clone3 resumed> => {parent_tid=[1099]}, 88) = 1099 [pid 1094] <... ioctl resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1095] rt_sigprocmask(SIG_SETMASK, [], [pid 303] <... openat resumed>) = 3 [pid 1095] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 303] ioctl(3, LOOP_CLR_FD [pid 1095] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... ioctl resumed>) = 0 [pid 1095] <... futex resumed>) = 0 [pid 303] close(3 [pid 1095] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 303] <... close resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1094] ioctl(7, LOOP_SET_FD, 6 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1100 [pid 1094] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1094] close(7) = 0 [pid 1094] close(6) = 0 [pid 1094] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1093] <... futex resumed>) = 0 [pid 1094] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1093] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1094] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1093] <... futex resumed>) = 0 [pid 1094] mknod(0x20000000, 000 [pid 1093] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1094] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1094] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1093] <... futex resumed>) = 0 [pid 1094] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1093] exit_group(0 [pid 1094] <... futex resumed>) = ? [pid 1093] <... exit_group resumed>) = ? [pid 1094] +++ exited with 0 +++ [pid 1093] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1093, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 1098 attached [pid 1098] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1098] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1098] memfd_create("syzkaller", 0./strace-static-x86_64: Process 1097 attached ) = 3 [pid 1098] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1098] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 1100 attached [pid 1100] set_robust_list(0x5555636e06a0, 24./strace-static-x86_64: Process 1099 attached [pid 1097] set_robust_list(0x5555636e06a0, 24 [pid 1099] set_robust_list(0x7fe6f87d19a0, 24 [pid 1097] <... set_robust_list resumed>) = 0 [pid 1099] <... set_robust_list resumed>) = 0 [pid 1099] rt_sigprocmask(SIG_SETMASK, [], [pid 1097] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1099] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1097] <... prctl resumed>) = 0 [pid 1100] <... set_robust_list resumed>) = 0 [pid 1100] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1099] memfd_create("syzkaller", 0 [pid 1097] setpgid(0, 0 [pid 1099] <... memfd_create resumed>) = 3 [pid 1097] <... setpgid resumed>) = 0 [pid 1099] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1100] <... prctl resumed>) = 0 [pid 1099] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1097] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1100] setpgid(0, 0) = 0 [pid 1100] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECexecuting program ) = 3 [pid 1100] write(3, "1000", 4) = 4 [pid 1100] close(3) = 0 [pid 1100] write(1, "executing program\n", 18) = 18 [pid 1100] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1100] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1100] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1100] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 1099] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1100] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1097] <... openat resumed>) = 3 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1100] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1097] write(3, "1000", 4 [pid 306] <... openat resumed>) = 3 [pid 1100] <... mprotect resumed>) = 0 [pid 1097] <... write resumed>) = 4 [pid 306] ioctl(3, LOOP_CLR_FD [pid 1100] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1099] <... write resumed>) = 262144 [pid 1097] close(3 [pid 306] <... ioctl resumed>) = 0 [pid 1100] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1099] munmap(0x7fe6f03b1000, 138412032 [pid 1097] <... close resumed>) = 0 [pid 306] close(3executing program [pid 1100] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1099] <... munmap resumed>) = 0 [pid 1097] write(1, "executing program\n", 18 [pid 306] <... close resumed>) = 0 [pid 1099] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1097] <... write resumed>) = 18 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1100] <... clone3 resumed> => {parent_tid=[1101]}, 88) = 1101 [pid 1099] <... openat resumed>) = 4 [pid 1097] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1100] rt_sigprocmask(SIG_SETMASK, [], [pid 1099] ioctl(4, LOOP_SET_FD, 3 [pid 1097] <... futex resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1102 [pid 1100] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1099] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1098] <... write resumed>) = 262144 [pid 1097] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1100] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1099] ioctl(4, LOOP_CLR_FD [pid 1097] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1100] <... futex resumed>) = 0 [pid 1099] <... ioctl resumed>) = 0 [pid 1097] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1100] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1097] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 1101 attached [pid 1098] munmap(0x7fe6f03b1000, 138412032 [pid 1097] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1101] set_robust_list(0x7fe6f87d19a0, 24 [pid 1098] <... munmap resumed>) = 0 [pid 1097] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1098] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 1098] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1098] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1102 attached [pid 1102] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1102] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1102] setpgid(0, 0 [pid 1098] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1098] close(4) = 0 [pid 1098] close(3 [pid 1101] <... set_robust_list resumed>) = 0 [pid 1098] <... close resumed>) = 0 [pid 1097] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1101] rt_sigprocmask(SIG_SETMASK, [], [pid 1099] ioctl(4, LOOP_SET_FD, 3 [pid 1101] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1097] <... mprotect resumed>) = 0 [pid 1099] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1099] close(4 [pid 1098] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1097] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1101] memfd_create("syzkaller", 0 [pid 1099] <... close resumed>) = 0 [pid 1097] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1099] close(3 [pid 1097] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1101] <... memfd_create resumed>) = 3 [pid 1098] <... futex resumed>) = 1 [pid 1096] <... futex resumed>) = 0 [pid 1098] chdir("./file0" [pid 1097] <... clone3 resumed> => {parent_tid=[1103]}, 88) = 1103 [pid 1096] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1098] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1097] rt_sigprocmask(SIG_SETMASK, [], [pid 1096] <... futex resumed>) = 0 [pid 1102] <... setpgid resumed>) = 0 [pid 1101] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1099] <... close resumed>) = 0 [pid 1098] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1097] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1096] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1101] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1099] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1098] <... futex resumed>) = 0 [pid 1097] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1096] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1102] <... openat resumed>) = 3 [pid 1099] <... futex resumed>) = 1 [pid 1098] creat("./bus", 000 [pid 1097] <... futex resumed>) = 0 [pid 1096] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1095] <... futex resumed>) = 0 [pid 1102] write(3, "1000", 4 [pid 1099] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1098] <... creat resumed>) = 3 [pid 1097] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1096] <... futex resumed>) = 0 [pid 1095] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1102] <... write resumed>) = 4 [pid 1099] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1098] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1096] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1095] <... futex resumed>) = 0 [pid 1102] close(3 [pid 1099] chdir("./file0" [pid 1098] <... futex resumed>) = 0 [pid 1096] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1095] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1102] <... close resumed>) = 0 [pid 1099] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1098] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1096] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 1102] write(1, "executing program\n", 18 [pid 1101] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1099] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1098] <... openat resumed>) = 4 [pid 1096] <... futex resumed>) = 0 [pid 1102] <... write resumed>) = 18 [pid 1099] <... futex resumed>) = 1 [pid 1098] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1096] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1095] <... futex resumed>) = 0 [pid 1102] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1099] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1098] <... futex resumed>) = 0 [pid 1096] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1095] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1102] <... futex resumed>) = 0 [pid 1099] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1098] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1096] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1095] <... futex resumed>) = 0 [pid 1102] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1099] creat("./bus", 000 [pid 1098] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1096] <... futex resumed>) = 0 [pid 1095] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1103 attached [pid 1102] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1101] <... write resumed>) = 262144 [pid 1099] <... creat resumed>) = 3 [pid 1098] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1096] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1103] set_robust_list(0x7fe6f87d19a0, 24 [pid 1102] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1101] munmap(0x7fe6f03b1000, 138412032 [pid 1099] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1098] <... futex resumed>) = 0 [pid 1096] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1103] <... set_robust_list resumed>) = 0 [pid 1102] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1101] <... munmap resumed>) = 0 [pid 1099] <... futex resumed>) = 1 [pid 1098] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1096] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1095] <... futex resumed>) = 0 [pid 1103] rt_sigprocmask(SIG_SETMASK, [], [pid 1102] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1101] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1099] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1098] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1096] <... futex resumed>) = 0 [pid 1095] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1103] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1102] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1101] <... openat resumed>) = 4 [pid 1099] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1098] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1096] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1102] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1098] <... open resumed>) = 5 [pid 1102] <... mprotect resumed>) = 0 [pid 1098] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1102] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1098] <... futex resumed>) = 1 [pid 1096] <... futex resumed>) = 0 [pid 1102] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1098] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1096] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1102] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1099] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1098] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1096] <... futex resumed>) = 0 [pid 1095] <... futex resumed>) = 0 [pid 1099] <... openat resumed>) = 4 [pid 1098] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1096] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1095] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1102] <... clone3 resumed> => {parent_tid=[1104]}, 88) = 1104 [pid 1099] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1098] <... mmap resumed>) = 0x20000000 [pid 1095] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1102] rt_sigprocmask(SIG_SETMASK, [], [pid 1101] ioctl(4, LOOP_SET_FD, 3 [pid 1099] <... futex resumed>) = 0 [pid 1098] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1095] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1103] memfd_create("syzkaller", 0 [pid 1102] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1101] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1099] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1098] <... futex resumed>) = 1 [pid 1096] <... futex resumed>) = 0 [pid 1095] <... futex resumed>) = 0 [pid 1103] <... memfd_create resumed>) = 3 [pid 1102] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1101] ioctl(4, LOOP_CLR_FD [pid 1099] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1098] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1096] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1095] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1103] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1102] <... futex resumed>) = 0 [pid 1101] <... ioctl resumed>) = 0 [pid 1099] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1098] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1096] <... futex resumed>) = 0 [pid 1095] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1103] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1102] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1099] <... futex resumed>) = 0 [pid 1098] memfd_create("syzkaller", 0 [pid 1096] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1095] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1099] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1098] <... memfd_create resumed>) = 6 [pid 1095] <... futex resumed>) = 0 [pid 1099] <... open resumed>) = 5 [pid 1098] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1095] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1099] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1098] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1095] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1103] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1099] <... futex resumed>) = 0 [pid 1098] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1095] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1101] ioctl(4, LOOP_SET_FD, 3 [pid 1099] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1098] <... write resumed>) = 131072 [pid 1095] <... futex resumed>) = 0 [pid 1101] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1098] munmap(0x7fe6f03b1000, 138412032 [pid 1103] <... write resumed>) = 262144 [pid 1101] close(4 [pid 1099] <... mmap resumed>) = 0x20000000 [pid 1098] <... munmap resumed>) = 0 [pid 1095] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1103] munmap(0x7fe6f03b1000, 138412032 [pid 1101] <... close resumed>) = 0 [pid 1099] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1098] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1095] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1098] <... openat resumed>) = 7 [pid 1098] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1098] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1104 attached [pid 1104] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1104] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1098] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1098] close(7) = 0 [pid 1098] close(6) = 0 [pid 1098] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1096] <... futex resumed>) = 0 [pid 1098] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1096] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1098] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1096] <... futex resumed>) = 0 [pid 1104] memfd_create("syzkaller", 0 [pid 1103] <... munmap resumed>) = 0 [pid 1101] close(3 [pid 1099] <... futex resumed>) = 0 [pid 1098] mknod(0x20000000, 000 [pid 1096] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1095] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1104] <... memfd_create resumed>) = 3 [pid 1103] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1098] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1104] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1101] <... close resumed>) = 0 [pid 1098] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1104] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1103] <... openat resumed>) = 4 [pid 1101] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1099] memfd_create("syzkaller", 0 [pid 1098] <... futex resumed>) = 1 [pid 1096] <... futex resumed>) = 0 [pid 1095] <... futex resumed>) = 0 [pid 1104] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1103] ioctl(4, LOOP_SET_FD, 3 [pid 1101] <... futex resumed>) = 1 [pid 1100] <... futex resumed>) = 0 [pid 1099] <... memfd_create resumed>) = 6 [pid 1098] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1096] exit_group(0 [pid 1095] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1103] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1101] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1100] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1099] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1098] <... futex resumed>) = ? [pid 1096] <... exit_group resumed>) = ? [pid 1103] ioctl(4, LOOP_CLR_FD [pid 1101] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1100] <... futex resumed>) = 0 [pid 1099] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1098] +++ exited with 0 +++ [pid 1096] +++ exited with 0 +++ [pid 1103] <... ioctl resumed>) = 0 [pid 1101] chdir("./file0" [pid 1100] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1096, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1104] <... write resumed>) = 262144 [pid 1101] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1099] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1101] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1104] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1104] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 1104] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1104] ioctl(4, LOOP_CLR_FD) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 305] ioctl(3, LOOP_CLR_FD) = 0 [pid 305] close(3) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 1105 [pid 1104] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1104] close(4 [pid 1101] <... futex resumed>) = 1 [pid 1100] <... futex resumed>) = 0 [pid 1100] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1100] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1104] <... close resumed>) = 0 [pid 1104] close(3) = 0 [pid 1103] ioctl(4, LOOP_SET_FD, 3 [pid 1101] creat("./bus", 000 [pid 1099] <... write resumed>) = 131072 [pid 1103] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1103] close(4 [pid 1101] <... creat resumed>) = 3 [pid 1099] munmap(0x7fe6f03b1000, 138412032 [pid 1103] <... close resumed>) = 0 [pid 1101] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1104] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1099] <... munmap resumed>) = 0 [pid 1103] close(3 [pid 1101] <... futex resumed>) = 1 [pid 1100] <... futex resumed>) = 0 [pid 1099] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1100] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1104] <... futex resumed>) = 1 [pid 1102] <... futex resumed>) = 0 [pid 1100] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1104] chdir("./file0" [pid 1103] <... close resumed>) = 0 [pid 1102] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1101] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1099] <... openat resumed>) = 7 [pid 1104] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1103] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1102] <... futex resumed>) = 0 [pid 1104] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1103] <... futex resumed>) = 1 [pid 1102] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1101] <... openat resumed>) = 4 [pid 1099] ioctl(7, LOOP_SET_FD, 6 [pid 1097] <... futex resumed>) = 0 [pid 1104] <... futex resumed>) = 0 [pid 1103] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1102] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1101] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1099] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1097] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1104] creat("./bus", 000 [pid 1103] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1102] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1101] <... futex resumed>) = 1 [pid 1100] <... futex resumed>) = 0 [pid 1099] ioctl(7, LOOP_CLR_FD [pid 1097] <... futex resumed>) = 0 [pid 1104] <... creat resumed>) = 3 [pid 1103] chdir("./file0" [pid 1102] <... futex resumed>) = 0 [pid 1101] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1100] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1099] <... ioctl resumed>) = 0 [pid 1097] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1104] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1103] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1102] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1101] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1100] <... futex resumed>) = 0 [pid 1104] <... futex resumed>) = 0 [pid 1103] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1102] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1101] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1100] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1104] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1103] <... futex resumed>) = 1 [pid 1102] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1101] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1097] <... futex resumed>) = 0 [pid 1104] <... openat resumed>) = 4 [pid 1103] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1102] <... futex resumed>) = 0 [pid 1101] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1097] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1104] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1103] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1102] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1101] <... futex resumed>) = 1 [pid 1100] <... futex resumed>) = 0 [pid 1097] <... futex resumed>) = 0 [pid 1104] <... futex resumed>) = 0 [pid 1103] creat("./bus", 000 [pid 1102] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1101] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1100] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1099] ioctl(7, LOOP_SET_FD, 6 [pid 1097] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1105 attached [pid 1104] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1103] <... creat resumed>) = 3 [pid 1102] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1101] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1100] <... futex resumed>) = 0 [pid 1099] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1105] set_robust_list(0x5555636e06a0, 24 [pid 1104] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1103] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1102] <... futex resumed>) = 0 [pid 1101] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1100] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1099] close(7 [pid 1105] <... set_robust_list resumed>) = 0 [pid 1104] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1102] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1105] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1104] <... futex resumed>) = 0 [pid 1102] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1105] <... prctl resumed>) = 0 [pid 1104] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1102] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1105] setpgid(0, 0 [pid 1104] <... open resumed>) = 5 [pid 1102] <... futex resumed>) = 0 [pid 1105] <... setpgid resumed>) = 0 [pid 1104] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1102] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1105] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1104] <... futex resumed>) = 0 [pid 1102] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1105] <... openat resumed>) = 3 [pid 1104] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1102] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1105] write(3, "1000", 4 [pid 1104] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1102] <... futex resumed>) = 0 [pid 1105] <... write resumed>) = 4 [pid 1104] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1102] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1105] close(3 [pid 1104] <... mmap resumed>) = 0x20000000 [pid 1103] <... futex resumed>) = 1 [pid 1101] <... open resumed>) = 5 [pid 1099] <... close resumed>) = 0 [pid 1097] <... futex resumed>) = 0 [pid 1105] <... close resumed>) = 0 [pid 1104] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 1103] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1101] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1099] close(6 [pid 1097] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1105] write(1, "executing program\n", 18 [pid 1104] <... futex resumed>) = 1 [pid 1103] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1102] <... futex resumed>) = 0 [pid 1101] <... futex resumed>) = 1 [pid 1100] <... futex resumed>) = 0 [pid 1105] <... write resumed>) = 18 [pid 1104] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1103] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1102] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1101] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1100] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1099] <... close resumed>) = 0 [pid 1097] <... futex resumed>) = 0 [pid 1105] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1104] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1103] <... openat resumed>) = 4 [pid 1102] <... futex resumed>) = 0 [pid 1101] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1100] <... futex resumed>) = 0 [pid 1099] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1097] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1105] <... futex resumed>) = 0 [pid 1104] memfd_create("syzkaller", 0 [pid 1103] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1102] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1101] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1100] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1099] <... futex resumed>) = 1 [pid 1097] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1095] <... futex resumed>) = 0 [pid 1105] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1104] <... memfd_create resumed>) = 6 [pid 1103] <... futex resumed>) = 0 [pid 1101] <... mmap resumed>) = 0x20000000 [pid 1099] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1097] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1095] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1105] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1104] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1103] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1101] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1099] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1097] <... futex resumed>) = 0 [pid 1095] <... futex resumed>) = 0 [pid 1105] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1104] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1105] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1104] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1103] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1101] <... futex resumed>) = 1 [pid 1100] <... futex resumed>) = 0 [pid 1099] mknod(0x20000000, 000 [pid 1097] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1095] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1105] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1104] <... write resumed>) = 131072 [pid 1100] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1105] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1104] munmap(0x7fe6f03b1000, 138412032 [pid 1100] <... futex resumed>) = 0 [pid 1105] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1104] <... munmap resumed>) = 0 [pid 1100] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1105] <... mprotect resumed>) = 0 [pid 1104] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1105] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1104] <... openat resumed>) = 7 [pid 1105] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1104] ioctl(7, LOOP_SET_FD, 6 [pid 1105] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1104] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1104] ioctl(7, LOOP_CLR_FD [pid 1105] <... clone3 resumed> => {parent_tid=[1106]}, 88) = 1106 [pid 1104] <... ioctl resumed>) = 0 [pid 1105] rt_sigprocmask(SIG_SETMASK, [], [pid 1103] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1105] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1103] <... futex resumed>) = 0 [pid 1101] memfd_create("syzkaller", 0 [pid 1099] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1097] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1105] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1103] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1101] <... memfd_create resumed>) = 6 [pid 1099] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1097] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1105] <... futex resumed>) = 0 [pid 1103] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1101] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1099] <... futex resumed>) = 1 [pid 1097] <... futex resumed>) = 0 [pid 1095] <... futex resumed>) = 0 [pid 1105] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1103] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1101] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1099] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1097] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1095] exit_group(0 [pid 1104] ioctl(7, LOOP_SET_FD, 6 [pid 1103] <... open resumed>) = 5 [pid 1104] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1104] close(7) = 0 [pid 1104] close(6) = 0 [pid 1103] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1101] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1099] <... futex resumed>) = ? [pid 1095] <... exit_group resumed>) = ? [pid 1104] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1103] <... futex resumed>) = 1 [pid 1097] <... futex resumed>) = 0 [pid 1104] <... futex resumed>) = 1 [pid 1102] <... futex resumed>) = 0 [pid 1104] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1102] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1101] <... write resumed>) = 131072 [pid 1099] +++ exited with 0 +++ [pid 1097] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1104] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1102] <... futex resumed>) = 0 [pid 1104] mknod(0x20000000, 000 [pid 1102] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1104] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1103] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1101] munmap(0x7fe6f03b1000, 138412032 [pid 1097] <... futex resumed>) = 0 [pid 1095] +++ exited with 0 +++ [pid 1104] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1103] <... mmap resumed>) = 0x20000000 [pid 1102] <... futex resumed>) = 0 [pid 1101] <... munmap resumed>) = 0 [pid 1097] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1095, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1104] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1103] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1102] exit_group(0 [pid 1101] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1097] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1104] <... futex resumed>) = ? [pid 1103] <... futex resumed>) = 0 [pid 1102] <... exit_group resumed>) = ? [pid 1101] <... openat resumed>) = 7 [pid 1104] +++ exited with 0 +++ [pid 1103] memfd_create("syzkaller", 0 [pid 1102] +++ exited with 0 +++ [pid 1101] ioctl(7, LOOP_SET_FD, 6 [pid 1097] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1103] <... memfd_create resumed>) = 6 [pid 1101] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1097] <... futex resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1102, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1103] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1101] ioctl(7, LOOP_CLR_FD [pid 1097] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 1103] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1101] <... ioctl resumed>) = 0 [pid 304] <... openat resumed>) = 3 [pid 1103] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 304] ioctl(3, LOOP_CLR_FD [pid 1103] <... write resumed>) = 131072 [pid 304] <... ioctl resumed>) = 0 [pid 1103] munmap(0x7fe6f03b1000, 138412032 [pid 304] close(3 [pid 1103] <... munmap resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 1103] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1103] <... openat resumed>) = 7 [pid 1103] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1107 [pid 1103] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1107 attached [pid 1101] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1101] close(7) = 0 [pid 1101] close(6 [pid 1107] set_robust_list(0x5555636e06a0, 24 [pid 1101] <... close resumed>) = 0 [pid 1101] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1103] ioctl(7, LOOP_SET_FD, 6 [pid 1101] <... futex resumed>) = 1 [pid 1100] <... futex resumed>) = 0 [pid 1103] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1101] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1100] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1103] close(7 [pid 1101] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1100] <... futex resumed>) = 0 [pid 1103] <... close resumed>) = 0 [pid 1101] mknod(0x20000000, 000 [pid 1100] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1103] close(6 [pid 1101] <... mknod resumed>) = -1 EEXIST (File exists) [pid 306] <... restart_syscall resumed>) = 0 [pid 1103] <... close resumed>) = 0 [pid 1101] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1103] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1101] <... futex resumed>) = 1 [pid 1100] <... futex resumed>) = 0 [pid 306] <... openat resumed>) = 3 ./strace-static-x86_64: Process 1106 attached [pid 1103] <... futex resumed>) = 1 [pid 1101] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1100] exit_group(0 [pid 1097] <... futex resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 1106] set_robust_list(0x7fe6f87d19a0, 24 [pid 1103] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1101] <... futex resumed>) = ? [pid 1100] <... exit_group resumed>) = ? [pid 1097] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... ioctl resumed>) = 0 [pid 1106] <... set_robust_list resumed>) = 0 [pid 1103] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1101] +++ exited with 0 +++ [pid 1100] +++ exited with 0 +++ [pid 1097] <... futex resumed>) = 0 [pid 306] close(3 [pid 1106] rt_sigprocmask(SIG_SETMASK, [], [pid 1103] mknod(0x20000000, 000 [pid 1097] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... close resumed>) = 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1100, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 1103] <... mknod resumed>) = -1 EEXIST (File exists) [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1103] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1097] <... futex resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1108 [pid 1103] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1097] exit_group(0) = ? [pid 1103] <... futex resumed>) = ? [pid 1107] <... set_robust_list resumed>) = 0 [pid 1107] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1107] setpgid(0, 0 [pid 1103] +++ exited with 0 +++ [pid 1097] +++ exited with 0 +++ [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1097, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 1107] <... setpgid resumed>) = 0 [pid 1107] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1107] write(3, "1000", 4) = 4 [pid 1107] close(3) = 0 executing program [pid 1107] write(1, "executing program\n", 18) = 18 [pid 1107] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1107] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1107] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1107] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1107] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1106] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1107] <... mprotect resumed>) = 0 [pid 1107] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1107] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[1109]}, 88) = 1109 [pid 1107] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1107] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1106] memfd_create("syzkaller", 0 [pid 1107] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1106] <... memfd_create resumed>) = 3 [pid 1106] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 ./strace-static-x86_64: Process 1108 attached [pid 303] <... restart_syscall resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 303] ioctl(3, LOOP_CLR_FD) = 0 [pid 303] close(3) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 1110 [pid 1106] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1108] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1108] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1108] setpgid(0, 0) = 0 [pid 1108] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1108] write(3, "1000", 4) = 4 [pid 1108] close(3) = 0 [pid 1108] write(1, "executing program\n", 18executing program ) = 18 [pid 1108] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1108] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1108] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1108] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1108] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 302] <... restart_syscall resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 302] ioctl(3, LOOP_CLR_FD) = 0 [pid 302] close(3) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 1111 [pid 1108] <... mprotect resumed>) = 0 [pid 1108] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1108] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[1112]}, 88) = 1112 [pid 1108] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1108] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1108] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1111 attached [pid 1111] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1111] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1111] setpgid(0, 0) = 0 [pid 1111] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1111] write(3, "1000", 4) = 4 [pid 1111] close(3) = 0 [pid 1111] write(1, "executing program\n", 18executing program ) = 18 [pid 1111] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1111] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 ./strace-static-x86_64: Process 1109 attached [pid 1106] <... write resumed>) = 262144 ./strace-static-x86_64: Process 1110 attached ./strace-static-x86_64: Process 1112 attached [pid 1109] set_robust_list(0x7fe6f87d19a0, 24 [pid 1106] munmap(0x7fe6f03b1000, 138412032 [pid 1110] set_robust_list(0x5555636e06a0, 24 [pid 1109] <... set_robust_list resumed>) = 0 [pid 1112] set_robust_list(0x7fe6f87d19a0, 24 [pid 1110] <... set_robust_list resumed>) = 0 [pid 1109] rt_sigprocmask(SIG_SETMASK, [], [pid 1106] <... munmap resumed>) = 0 [pid 1112] <... set_robust_list resumed>) = 0 [pid 1110] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1109] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1106] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1112] rt_sigprocmask(SIG_SETMASK, [], [pid 1110] <... prctl resumed>) = 0 [pid 1112] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1110] setpgid(0, 0 [pid 1109] memfd_create("syzkaller", 0 [pid 1106] <... openat resumed>) = 4 [pid 1112] memfd_create("syzkaller", 0 [pid 1110] <... setpgid resumed>) = 0 [pid 1109] <... memfd_create resumed>) = 3 [pid 1106] ioctl(4, LOOP_SET_FD, 3 [pid 1112] <... memfd_create resumed>) = 3 [pid 1110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1106] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1112] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1109] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1112] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1110] <... openat resumed>) = 3 [pid 1109] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1106] ioctl(4, LOOP_CLR_FD [pid 1111] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1111] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1111] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1111] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1112] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1111] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1106] <... ioctl resumed>) = 0 [pid 1111] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[1113]}, 88) = 1113 [pid 1111] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1111] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1111] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1113 attached [pid 1113] set_robust_list(0x7fe6f87d19a0, 24 [pid 1109] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1110] write(3, "1000", 4 [pid 1113] <... set_robust_list resumed>) = 0 [pid 1113] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1109] <... write resumed>) = 262144 [pid 1110] <... write resumed>) = 4 [pid 1113] memfd_create("syzkaller", 0 [pid 1110] close(3 [pid 1109] munmap(0x7fe6f03b1000, 138412032 [pid 1106] ioctl(4, LOOP_SET_FD, 3 [pid 1110] <... close resumed>) = 0 [pid 1106] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1110] write(1, "executing program\n", 18 [pid 1106] close(4executing program [pid 1110] <... write resumed>) = 18 [pid 1109] <... munmap resumed>) = 0 [pid 1106] <... close resumed>) = 0 [pid 1110] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1106] close(3 [pid 1110] <... futex resumed>) = 0 [pid 1109] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1113] <... memfd_create resumed>) = 3 [pid 1113] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1110] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1106] <... close resumed>) = 0 [pid 1110] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1109] <... openat resumed>) = 4 [pid 1106] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1110] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1112] <... write resumed>) = 262144 [pid 1110] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1109] ioctl(4, LOOP_SET_FD, 3 [pid 1106] <... futex resumed>) = 1 [pid 1112] munmap(0x7fe6f03b1000, 138412032 [pid 1110] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1109] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1106] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1110] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1109] ioctl(4, LOOP_CLR_FD [pid 1110] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1112] <... munmap resumed>) = 0 [pid 1110] <... mprotect resumed>) = 0 [pid 1109] <... ioctl resumed>) = 0 [pid 1105] <... futex resumed>) = 0 [pid 1112] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1110] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1112] <... openat resumed>) = 4 [pid 1110] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1112] ioctl(4, LOOP_SET_FD, 3 [pid 1110] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1112] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1112] ioctl(4, LOOP_CLR_FD [pid 1105] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1105] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1113] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1113] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 1113] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1106] <... futex resumed>) = 0 [pid 1110] <... clone3 resumed> => {parent_tid=[1114]}, 88) = 1114 [pid 1112] <... ioctl resumed>) = 0 [pid 1110] rt_sigprocmask(SIG_SETMASK, [], [pid 1106] chdir("./file0" [pid 1110] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1109] ioctl(4, LOOP_SET_FD, 3 [pid 1110] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1106] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1109] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1110] <... futex resumed>) = 0 [pid 1109] close(4 [pid 1106] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1110] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1109] <... close resumed>) = 0 [pid 1106] <... futex resumed>) = 1 [pid 1109] close(3 [pid 1106] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1105] <... futex resumed>) = 0 [pid 1105] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1105] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1113] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 1106] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1106] creat("./bus", 000 [pid 1113] ioctl(4, LOOP_SET_FD, 3 [pid 1106] <... creat resumed>) = 3 [pid 1113] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1113] ioctl(4, LOOP_CLR_FD [pid 1109] <... close resumed>) = 0 [pid 1106] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1109] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1112] ioctl(4, LOOP_SET_FD, 3 [pid 1106] <... futex resumed>) = 1 [pid 1112] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1109] <... futex resumed>) = 1 [pid 1112] close(4 [pid 1109] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1106] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1112] <... close resumed>) = 0 [pid 1112] close(3 [pid 1107] <... futex resumed>) = 0 [pid 1105] <... futex resumed>) = 0 [pid 1107] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1105] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1109] <... futex resumed>) = 0 [pid 1107] <... futex resumed>) = 1 [pid 1106] <... futex resumed>) = 0 [pid 1105] <... futex resumed>) = 1 [pid 1109] chdir("./file0" [pid 1106] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1107] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1105] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1106] <... openat resumed>) = 4 [pid 1109] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1106] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1112] <... close resumed>) = 0 [pid 1109] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1106] <... futex resumed>) = 0 [pid 1105] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1112] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1109] <... futex resumed>) = 1 [pid 1106] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1112] <... futex resumed>) = 1 [pid 1109] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1112] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1108] <... futex resumed>) = 0 [pid 1107] <... futex resumed>) = 0 [pid 1105] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1108] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1107] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1106] <... futex resumed>) = 0 [pid 1105] <... futex resumed>) = 1 [pid 1112] <... futex resumed>) = 0 [pid 1109] <... futex resumed>) = 0 [pid 1108] <... futex resumed>) = 1 [pid 1107] <... futex resumed>) = 1 [pid 1106] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1105] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1112] chdir("./file0" [pid 1109] creat("./bus", 000 [pid 1108] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1107] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1106] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1112] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1109] <... creat resumed>) = 3 [pid 1106] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1112] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1109] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1106] <... futex resumed>) = 1 [pid 1105] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1114 attached [pid 1112] <... futex resumed>) = 1 [pid 1109] <... futex resumed>) = 1 [pid 1108] <... futex resumed>) = 0 [pid 1107] <... futex resumed>) = 0 [pid 1106] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1105] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1114] set_robust_list(0x7fe6f87d19a0, 24 [pid 1112] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1109] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1108] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1107] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1106] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1105] <... futex resumed>) = 0 [pid 1114] <... set_robust_list resumed>) = 0 [pid 1112] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1109] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1108] <... futex resumed>) = 0 [pid 1107] <... futex resumed>) = 0 [pid 1106] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1105] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1114] rt_sigprocmask(SIG_SETMASK, [], [pid 1112] creat("./bus", 000 [pid 1109] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1108] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1107] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1106] <... open resumed>) = 5 [pid 1114] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1112] <... creat resumed>) = 3 [pid 1109] <... openat resumed>) = 4 [pid 1106] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1112] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1109] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1114] memfd_create("syzkaller", 0 [pid 1112] <... futex resumed>) = 1 [pid 1108] <... futex resumed>) = 0 [pid 1106] <... futex resumed>) = 1 [pid 1109] <... futex resumed>) = 1 [pid 1107] <... futex resumed>) = 0 [pid 1105] <... futex resumed>) = 0 [pid 1114] <... memfd_create resumed>) = 3 [pid 1112] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1109] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1108] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1107] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1106] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1105] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1114] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1112] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1109] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1108] <... futex resumed>) = 0 [pid 1107] <... futex resumed>) = 0 [pid 1105] <... futex resumed>) = 0 [pid 1108] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1107] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1105] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1113] <... ioctl resumed>) = 0 [pid 1113] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1112] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1106] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1109] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1114] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1112] <... openat resumed>) = 4 [pid 1106] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1113] close(4 [pid 1106] <... mmap resumed>) = 0x20000000 [pid 1112] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1106] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1112] <... futex resumed>) = 1 [pid 1108] <... futex resumed>) = 0 [pid 1106] <... futex resumed>) = 1 [pid 1105] <... futex resumed>) = 0 [pid 1112] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1108] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1106] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1105] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1112] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1108] <... futex resumed>) = 0 [pid 1106] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1105] <... futex resumed>) = 0 [pid 1112] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1108] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1106] memfd_create("syzkaller", 0 [pid 1105] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1106] <... memfd_create resumed>) = 6 [pid 1106] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1114] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1106] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1109] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1113] <... close resumed>) = 0 [pid 1113] close(3) = 0 [pid 1109] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1106] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1112] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1109] <... futex resumed>) = 1 [pid 1107] <... futex resumed>) = 0 [pid 1107] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1112] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1109] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1107] <... futex resumed>) = 0 [pid 1106] <... write resumed>) = 131072 [pid 1112] <... futex resumed>) = 1 [pid 1109] <... open resumed>) = 5 [pid 1108] <... futex resumed>) = 0 [pid 1107] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1106] munmap(0x7fe6f03b1000, 138412032 [pid 1114] <... write resumed>) = 262144 [pid 1112] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1109] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1108] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1107] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1114] munmap(0x7fe6f03b1000, 138412032 [pid 1112] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1109] <... futex resumed>) = 0 [pid 1108] <... futex resumed>) = 0 [pid 1107] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1106] <... munmap resumed>) = 0 [pid 1114] <... munmap resumed>) = 0 [pid 1113] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1112] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1109] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1108] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1107] <... futex resumed>) = 0 [pid 1106] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1114] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1113] <... futex resumed>) = 1 [pid 1112] <... open resumed>) = 5 [pid 1111] <... futex resumed>) = 0 [pid 1109] <... mmap resumed>) = 0x20000000 [pid 1107] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1106] <... openat resumed>) = 7 [pid 1114] <... openat resumed>) = 4 [pid 1113] chdir("./file0" [pid 1112] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1111] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1109] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1107] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1106] ioctl(7, LOOP_SET_FD, 6 [pid 1114] ioctl(4, LOOP_SET_FD, 3 [pid 1113] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1112] <... futex resumed>) = 1 [pid 1111] <... futex resumed>) = 0 [pid 1109] <... futex resumed>) = 0 [pid 1108] <... futex resumed>) = 0 [pid 1107] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1106] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1114] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1113] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1112] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1111] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1109] memfd_create("syzkaller", 0 [pid 1108] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1107] <... futex resumed>) = 0 [pid 1113] <... futex resumed>) = 0 [pid 1111] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1108] <... futex resumed>) = 0 [pid 1107] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1106] ioctl(7, LOOP_CLR_FD [pid 1114] ioctl(4, LOOP_CLR_FD [pid 1113] creat("./bus", 000 [pid 1112] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1111] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1109] <... memfd_create resumed>) = 6 [pid 1108] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1106] <... ioctl resumed>) = 0 [pid 1114] <... ioctl resumed>) = 0 [pid 1113] <... creat resumed>) = 3 [pid 1112] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1111] <... futex resumed>) = 0 [pid 1109] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1113] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1111] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1113] <... futex resumed>) = 0 [pid 1111] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1112] <... mmap resumed>) = 0x20000000 [pid 1113] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1111] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1112] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1109] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1113] <... openat resumed>) = 4 [pid 1112] <... futex resumed>) = 1 [pid 1111] <... futex resumed>) = 0 [pid 1108] <... futex resumed>) = 0 [pid 1113] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1111] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1108] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1113] <... futex resumed>) = 0 [pid 1111] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1108] <... futex resumed>) = 0 [pid 1113] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1111] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1108] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1113] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1111] <... futex resumed>) = 0 [pid 1113] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1111] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1109] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1113] <... futex resumed>) = 0 [pid 1112] memfd_create("syzkaller", 0 [pid 1111] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1113] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1111] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1114] ioctl(4, LOOP_SET_FD, 3 [pid 1113] <... open resumed>) = 5 [pid 1112] <... memfd_create resumed>) = 6 [pid 1111] <... futex resumed>) = 0 [pid 1109] <... write resumed>) = 131072 [pid 1106] ioctl(7, LOOP_SET_FD, 6 [pid 1114] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1113] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1111] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1113] <... futex resumed>) = 0 [pid 1111] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1113] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1111] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1113] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1111] <... futex resumed>) = 0 [pid 1113] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1111] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1113] <... mmap resumed>) = 0x20000000 [pid 1113] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1111] <... futex resumed>) = 0 [pid 1113] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1111] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1113] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1111] <... futex resumed>) = 0 [pid 1113] memfd_create("syzkaller", 0 [pid 1111] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1113] <... memfd_create resumed>) = 6 [pid 1113] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1114] close(4 [pid 1113] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1112] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1109] munmap(0x7fe6f03b1000, 138412032 [pid 1106] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1114] <... close resumed>) = 0 [pid 1113] <... write resumed>) = 131072 [pid 1112] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1109] <... munmap resumed>) = 0 [pid 1106] close(7 [pid 1114] close(3 [pid 1113] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1113] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 1113] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1113] ioctl(7, LOOP_CLR_FD) = 0 [pid 1112] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1106] <... close resumed>) = 0 [pid 1114] <... close resumed>) = 0 [pid 1109] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1106] close(6 [pid 1112] <... write resumed>) = 131072 [pid 1106] <... close resumed>) = 0 [pid 1114] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1109] <... openat resumed>) = 7 [pid 1114] <... futex resumed>) = 1 [pid 1112] munmap(0x7fe6f03b1000, 138412032 [pid 1110] <... futex resumed>) = 0 [pid 1109] ioctl(7, LOOP_SET_FD, 6 [pid 1106] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1114] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 1112] <... munmap resumed>) = 0 [pid 1110] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1109] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1106] <... futex resumed>) = 1 [pid 1105] <... futex resumed>) = 0 [pid 1114] chdir("./file0" [pid 1113] ioctl(7, LOOP_SET_FD, 6 [pid 1112] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1110] <... futex resumed>) = 0 [pid 1109] ioctl(7, LOOP_CLR_FD [pid 1106] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1105] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1114] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1113] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1112] <... openat resumed>) = 7 [pid 1110] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1109] <... ioctl resumed>) = 0 [pid 1106] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1105] <... futex resumed>) = 0 [pid 1114] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1113] close(7 [pid 1112] ioctl(7, LOOP_SET_FD, 6 [pid 1110] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1106] mknod(0x20000000, 000 [pid 1105] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1113] <... close resumed>) = 0 [pid 1113] close(6) = 0 [pid 1113] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1111] <... futex resumed>) = 0 [pid 1113] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1111] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1113] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1111] <... futex resumed>) = 0 [pid 1113] mknod(0x20000000, 000 [pid 1111] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1113] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1113] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1111] <... futex resumed>) = 0 [pid 1113] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1111] exit_group(0 [pid 1113] <... futex resumed>) = ? [pid 1111] <... exit_group resumed>) = ? [pid 1113] +++ exited with 0 +++ [pid 1111] +++ exited with 0 +++ [pid 1114] <... futex resumed>) = 0 [pid 1112] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1110] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1106] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1114] creat("./bus", 000 [pid 1112] ioctl(7, LOOP_CLR_FD [pid 1110] <... futex resumed>) = 0 [pid 1106] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1111, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1114] <... creat resumed>) = 3 [pid 1112] <... ioctl resumed>) = 0 [pid 1110] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1106] <... futex resumed>) = 1 [pid 1105] <... futex resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 1114] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1110] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1106] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1105] exit_group(0 [pid 1114] <... futex resumed>) = 0 [pid 1110] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1109] ioctl(7, LOOP_SET_FD, 6 [pid 1106] <... futex resumed>) = ? [pid 1105] <... exit_group resumed>) = ? [pid 1114] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1110] <... futex resumed>) = 0 [pid 1109] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1106] +++ exited with 0 +++ [pid 1105] +++ exited with 0 +++ [pid 1114] <... openat resumed>) = 4 [pid 1112] ioctl(7, LOOP_SET_FD, 6 [pid 1110] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1109] close(7 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1105, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1114] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1112] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1110] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1109] <... close resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1114] <... futex resumed>) = 0 [pid 1112] close(7 [pid 1110] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1109] close(6 [pid 1114] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1112] <... close resumed>) = 0 [pid 1110] <... futex resumed>) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 1112] close(6 [pid 1110] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1109] <... close resumed>) = 0 [pid 1114] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1112] <... close resumed>) = 0 [pid 1109] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1114] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1114] <... futex resumed>) = 1 [pid 1112] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1110] <... futex resumed>) = 0 [pid 1109] <... futex resumed>) = 1 [pid 1107] <... futex resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 1114] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1112] <... futex resumed>) = 1 [pid 1110] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1109] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1108] <... futex resumed>) = 0 [pid 1107] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] ioctl(3, LOOP_CLR_FD [pid 1114] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1112] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1110] <... futex resumed>) = 0 [pid 1109] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1108] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1107] <... futex resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 1114] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1112] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1110] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1109] mknod(0x20000000, 000 [pid 1108] <... futex resumed>) = 0 [pid 1107] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] close(3 [pid 1114] <... open resumed>) = 5 [pid 1112] mknod(0x20000000, 000 [pid 1109] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1108] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] <... close resumed>) = 0 [pid 1114] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1112] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1109] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1114] <... futex resumed>) = 1 [pid 1112] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1110] <... futex resumed>) = 0 [pid 1109] <... futex resumed>) = 1 [pid 1107] <... futex resumed>) = 0 [pid 1114] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1112] <... futex resumed>) = 1 [pid 1110] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1109] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1108] <... futex resumed>) = 0 [pid 1107] exit_group(0 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1115 [pid 1114] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1112] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1110] <... futex resumed>) = 0 [pid 1109] <... futex resumed>) = ? [pid 1108] exit_group(0 [pid 1107] <... exit_group resumed>) = ? [pid 1114] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1112] <... futex resumed>) = ? [pid 1110] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1109] +++ exited with 0 +++ [pid 1108] <... exit_group resumed>) = ? [pid 1107] +++ exited with 0 +++ [pid 1114] <... mmap resumed>) = 0x20000000 [pid 1112] +++ exited with 0 +++ [pid 1108] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1108, si_uid=0, si_status=0, si_utime=1, si_stime=0} --- [pid 305] <... restart_syscall resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 305] ioctl(3, LOOP_CLR_FD) = 0 [pid 305] close(3) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 1116 ./strace-static-x86_64: Process 1116 attached [pid 1116] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1116] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1114] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1107, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1114] <... futex resumed>) = 1 [pid 1110] <... futex resumed>) = 0 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 1114] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1110] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1114] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1110] <... futex resumed>) = 0 [pid 1114] memfd_create("syzkaller", 0 [pid 1110] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1114] <... memfd_create resumed>) = 6 [pid 1114] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1116] setpgid(0, 0) = 0 [pid 1116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1116] write(3, "1000", 4 [pid 306] <... restart_syscall resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1114] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 306] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1115 attached [pid 1114] <... write resumed>) = 131072 [pid 304] <... restart_syscall resumed>) = 0 [pid 1115] set_robust_list(0x5555636e06a0, 24 [pid 1114] munmap(0x7fe6f03b1000, 138412032 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1117 [pid 1115] <... set_robust_list resumed>) = 0 [pid 1114] <... munmap resumed>) = 0 [pid 1115] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1114] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1115] <... prctl resumed>) = 0 [pid 1114] <... openat resumed>) = 7 [pid 304] <... openat resumed>) = 3 [pid 1115] setpgid(0, 0 [pid 1114] ioctl(7, LOOP_SET_FD, 6 [pid 304] ioctl(3, LOOP_CLR_FD [pid 1115] <... setpgid resumed>) = 0 [pid 1114] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] <... ioctl resumed>) = 0 [pid 1115] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1114] ioctl(7, LOOP_CLR_FD [pid 304] close(3 [pid 1115] <... openat resumed>) = 3 [pid 1114] <... ioctl resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 1115] write(3, "1000", 4 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1115] <... write resumed>) = 4 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1118 [pid 1116] <... write resumed>) = 4 executing program [pid 1116] close(3 [pid 1115] close(3./strace-static-x86_64: Process 1117 attached [pid 1114] ioctl(7, LOOP_SET_FD, 6 [pid 1115] <... close resumed>) = 0 [pid 1114] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1117] set_robust_list(0x5555636e06a0, 24 [pid 1115] write(1, "executing program\n", 18 [pid 1114] close(7 [pid 1117] <... set_robust_list resumed>) = 0 [pid 1115] <... write resumed>) = 18 [pid 1114] <... close resumed>) = 0 [pid 1115] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1114] close(6 [pid 1116] <... close resumed>) = 0 [pid 1117] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1115] <... futex resumed>) = 0 [pid 1114] <... close resumed>) = 0 [pid 1117] <... prctl resumed>) = 0 [pid 1115] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1114] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1115] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1117] setpgid(0, 0 [pid 1115] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1114] <... futex resumed>) = 1 [pid 1110] <... futex resumed>) = 0 [pid 1117] <... setpgid resumed>) = 0 [pid 1115] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1114] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1110] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1117] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1115] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1114] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1110] <... futex resumed>) = 0 [pid 1117] <... openat resumed>) = 3 [pid 1115] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1114] mknod(0x20000000, 000 [pid 1110] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1117] write(3, "1000", 4 [pid 1115] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1114] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1117] <... write resumed>) = 4 [pid 1115] <... mprotect resumed>) = 0 [pid 1114] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1117] close(3 [pid 1115] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1114] <... futex resumed>) = 1 [pid 1110] <... futex resumed>) = 0 [pid 1117] <... close resumed>) = 0 [pid 1116] write(1, "executing program\n", 18 [pid 1115] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1114] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1110] exit_group(0executing program [pid 1117] write(1, "executing program\n", 18 [pid 1116] <... write resumed>) = 18 [pid 1115] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1114] <... futex resumed>) = ? [pid 1110] <... exit_group resumed>) = ? [pid 1116] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1114] +++ exited with 0 +++ [pid 1116] <... futex resumed>) = 0 [pid 1116] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, executing program [pid 1117] <... write resumed>) = 18 [pid 1116] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1110] +++ exited with 0 +++ [pid 1117] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1116] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1115] <... clone3 resumed> => {parent_tid=[1119]}, 88) = 1119 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1110, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 1117] <... futex resumed>) = 0 [pid 1116] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1115] rt_sigprocmask(SIG_SETMASK, [], [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1117] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1116] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1115] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1117] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1115] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1117] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1115] <... futex resumed>) = 0 [pid 1117] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1115] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1117] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1116] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1117] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1116] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1117] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1116] <... mprotect resumed>) = 0 [pid 1117] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1117] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1116] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1117] <... clone3 resumed> => {parent_tid=[1120]}, 88) = 1120 [pid 1117] rt_sigprocmask(SIG_SETMASK, [], [pid 1116] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1117] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1117] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1117] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1116] <... clone3 resumed> => {parent_tid=[1121]}, 88) = 1121 ./strace-static-x86_64: Process 1119 attached [pid 1116] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1116] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1116] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1118 attached [pid 1118] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1118] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1118] setpgid(0, 0) = 0 [pid 1118] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1118] write(3, "1000", 4) = 4 executing program [pid 1118] close(3) = 0 [pid 1118] write(1, "executing program\n", 18) = 18 [pid 1118] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1118] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1118] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1118] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1118] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1118] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1118] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[1122]}, 88) = 1122 [pid 1118] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1118] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1118] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1121 attached [pid 303] <... restart_syscall resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 303] ioctl(3, LOOP_CLR_FD) = 0 [pid 303] close(3) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 1123 [pid 1121] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1121] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1121] memfd_create("syzkaller", 0) = 3 ./strace-static-x86_64: Process 1123 attached ./strace-static-x86_64: Process 1120 attached [pid 1119] set_robust_list(0x7fe6f87d19a0, 24 [pid 1121] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1119] <... set_robust_list resumed>) = 0 [pid 1123] set_robust_list(0x5555636e06a0, 24 [pid 1120] set_robust_list(0x7fe6f87d19a0, 24 [pid 1119] rt_sigprocmask(SIG_SETMASK, [], [pid 1123] <... set_robust_list resumed>) = 0 [pid 1120] <... set_robust_list resumed>) = 0 [pid 1119] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1121] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1123] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1121] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1120] rt_sigprocmask(SIG_SETMASK, [], [pid 1119] memfd_create("syzkaller", 0 [pid 1123] <... prctl resumed>) = 0 [pid 1120] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1119] <... memfd_create resumed>) = 3 [pid 1123] setpgid(0, 0 [pid 1119] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1123] <... setpgid resumed>) = 0 [pid 1120] memfd_create("syzkaller", 0 [pid 1119] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1123] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 1122 attached [pid 1122] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1122] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1122] memfd_create("syzkaller", 0) = 3 [pid 1123] <... openat resumed>) = 3 [pid 1120] <... memfd_create resumed>) = 3 [pid 1119] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1123] write(3, "1000", 4 [pid 1120] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1122] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1123] <... write resumed>) = 4 [pid 1122] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1120] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1119] <... write resumed>) = 262144 [pid 1123] close(3 [pid 1121] <... write resumed>) = 262144 [pid 1121] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1121] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 1121] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1121] ioctl(4, LOOP_CLR_FD [pid 1123] <... close resumed>) = 0 [pid 1120] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1119] munmap(0x7fe6f03b1000, 138412032 [pid 1123] write(1, "executing program\n", 18 [pid 1121] <... ioctl resumed>) = 0 executing program [pid 1119] <... munmap resumed>) = 0 [pid 1123] <... write resumed>) = 18 [pid 1123] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1120] <... write resumed>) = 262144 [pid 1119] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1123] <... futex resumed>) = 0 [pid 1120] munmap(0x7fe6f03b1000, 138412032 [pid 1123] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1119] <... openat resumed>) = 4 [pid 1123] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1119] ioctl(4, LOOP_SET_FD, 3 [pid 1123] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1119] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1123] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1120] <... munmap resumed>) = 0 [pid 1123] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1119] ioctl(4, LOOP_CLR_FD [pid 1123] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1120] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1119] <... ioctl resumed>) = 0 [pid 1123] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1120] <... openat resumed>) = 4 [pid 1123] <... mprotect resumed>) = 0 [pid 1120] ioctl(4, LOOP_SET_FD, 3 [pid 1123] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1120] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1123] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1120] ioctl(4, LOOP_CLR_FD [pid 1123] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1120] <... ioctl resumed>) = 0 [pid 1121] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1121] close(4) = 0 [pid 1121] close(3) = 0 [pid 1121] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1116] <... futex resumed>) = 0 [pid 1116] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1121] <... futex resumed>) = 1 [pid 1116] <... futex resumed>) = 0 [pid 1121] chdir("./file0" [pid 1116] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1121] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1121] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1116] <... futex resumed>) = 0 [pid 1121] creat("./bus", 000 [pid 1116] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1121] <... creat resumed>) = 3 [pid 1116] <... futex resumed>) = 0 [pid 1122] <... write resumed>) = 262144 [pid 1121] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1116] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1123] <... clone3 resumed> => {parent_tid=[1124]}, 88) = 1124 [pid 1121] <... futex resumed>) = 0 [pid 1116] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1123] rt_sigprocmask(SIG_SETMASK, [], [pid 1121] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1119] ioctl(4, LOOP_SET_FD, 3 [pid 1116] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1123] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1122] munmap(0x7fe6f03b1000, 138412032 [pid 1121] <... openat resumed>) = 4 [pid 1119] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1116] <... futex resumed>) = 0 [pid 1123] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1122] <... munmap resumed>) = 0 [pid 1121] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1119] close(4 [pid 1116] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1123] <... futex resumed>) = 0 [pid 1122] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1121] <... futex resumed>) = 0 [pid 1120] ioctl(4, LOOP_SET_FD, 3 [pid 1119] <... close resumed>) = 0 [pid 1116] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1123] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1122] <... openat resumed>) = 4 [pid 1121] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1120] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1119] close(3 [pid 1116] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1122] ioctl(4, LOOP_SET_FD, 3 [pid 1120] close(4 [pid 1116] <... futex resumed>) = 0 [pid 1122] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1120] <... close resumed>) = 0 [pid 1119] <... close resumed>) = 0 [pid 1116] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1122] ioctl(4, LOOP_CLR_FD [pid 1120] close(3 [pid 1119] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1122] <... ioctl resumed>) = 0 [pid 1120] <... close resumed>) = 0 [pid 1119] <... futex resumed>) = 1 [pid 1115] <... futex resumed>) = 0 [pid 1120] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1119] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1115] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1120] <... futex resumed>) = 1 [pid 1119] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1117] <... futex resumed>) = 0 [pid 1115] <... futex resumed>) = 0 [pid 1120] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1119] chdir("./file0" [pid 1117] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1115] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1120] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1119] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1117] <... futex resumed>) = 0 [pid 1120] chdir("./file0" [pid 1119] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1117] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1120] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1119] <... futex resumed>) = 1 [pid 1115] <... futex resumed>) = 0 [pid 1120] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1119] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1115] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1120] <... futex resumed>) = 1 [pid 1119] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1117] <... futex resumed>) = 0 [pid 1115] <... futex resumed>) = 0 [pid 1120] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1119] creat("./bus", 000 [pid 1117] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1115] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1121] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1120] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1122] ioctl(4, LOOP_SET_FD, 3 [pid 1121] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1120] creat("./bus", 000 [pid 1119] <... creat resumed>) = 3 [pid 1117] <... futex resumed>) = 0 [pid 1122] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1121] <... futex resumed>) = 1 [pid 1120] <... creat resumed>) = 3 [pid 1119] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1117] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1116] <... futex resumed>) = 0 [pid 1122] close(4 [pid 1121] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1120] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1119] <... futex resumed>) = 1 [pid 1117] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1116] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1115] <... futex resumed>) = 0 [pid 1122] <... close resumed>) = 0 [pid 1121] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1120] <... futex resumed>) = 0 [pid 1119] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1117] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1116] <... futex resumed>) = 0 [pid 1115] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1122] close(3 [pid 1121] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1120] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1119] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1117] <... futex resumed>) = 0 [pid 1116] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1115] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1124 attached [pid 1122] <... close resumed>) = 0 [pid 1121] <... open resumed>) = 5 [pid 1120] <... openat resumed>) = 4 [pid 1119] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1117] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1115] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1124] set_robust_list(0x7fe6f87d19a0, 24 [pid 1122] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1121] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1120] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1124] <... set_robust_list resumed>) = 0 [pid 1122] <... futex resumed>) = 1 [pid 1121] <... futex resumed>) = 1 [pid 1120] <... futex resumed>) = 0 [pid 1119] <... openat resumed>) = 4 [pid 1118] <... futex resumed>) = 0 [pid 1117] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1116] <... futex resumed>) = 0 [pid 1124] rt_sigprocmask(SIG_SETMASK, [], [pid 1122] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1121] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1120] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1119] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1118] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1117] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1116] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1124] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1122] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1121] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1120] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1119] <... futex resumed>) = 1 [pid 1118] <... futex resumed>) = 0 [pid 1117] <... futex resumed>) = 0 [pid 1116] <... futex resumed>) = 0 [pid 1115] <... futex resumed>) = 0 [pid 1124] memfd_create("syzkaller", 0 [pid 1122] chdir("./file0" [pid 1121] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1120] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1119] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1118] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1117] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1116] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1122] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1121] <... mmap resumed>) = 0x20000000 [pid 1122] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1121] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1119] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1115] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1122] <... futex resumed>) = 1 [pid 1121] <... futex resumed>) = 1 [pid 1119] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1118] <... futex resumed>) = 0 [pid 1116] <... futex resumed>) = 0 [pid 1115] <... futex resumed>) = 0 [pid 1124] <... memfd_create resumed>) = 3 [pid 1122] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1121] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1118] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1116] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1115] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1124] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1122] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1121] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1118] <... futex resumed>) = 0 [pid 1116] <... futex resumed>) = 0 [pid 1124] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1122] creat("./bus", 000 [pid 1121] memfd_create("syzkaller", 0 [pid 1120] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1119] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1118] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1116] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1122] <... creat resumed>) = 3 [pid 1121] <... memfd_create resumed>) = 6 [pid 1120] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1119] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1122] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1121] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1120] <... futex resumed>) = 1 [pid 1119] <... futex resumed>) = 1 [pid 1117] <... futex resumed>) = 0 [pid 1115] <... futex resumed>) = 0 [pid 1122] <... futex resumed>) = 1 [pid 1121] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1120] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1119] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1118] <... futex resumed>) = 0 [pid 1117] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1115] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1124] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1122] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1121] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1120] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1119] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1118] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1117] <... futex resumed>) = 0 [pid 1115] <... futex resumed>) = 0 [pid 1124] <... write resumed>) = 262144 [pid 1122] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1121] <... write resumed>) = 131072 [pid 1120] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1119] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1118] <... futex resumed>) = 0 [pid 1117] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1115] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1124] munmap(0x7fe6f03b1000, 138412032 [pid 1122] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1121] munmap(0x7fe6f03b1000, 138412032 [pid 1118] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1122] <... openat resumed>) = 4 [pid 1121] <... munmap resumed>) = 0 [pid 1122] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1121] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1122] <... futex resumed>) = 1 [pid 1121] <... openat resumed>) = 7 [pid 1118] <... futex resumed>) = 0 [pid 1122] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1121] ioctl(7, LOOP_SET_FD, 6 [pid 1118] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1122] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1121] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1118] <... futex resumed>) = 0 [pid 1122] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1121] ioctl(7, LOOP_CLR_FD [pid 1118] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1124] <... munmap resumed>) = 0 [pid 1121] <... ioctl resumed>) = 0 [pid 1120] <... open resumed>) = 5 [pid 1119] <... open resumed>) = 5 [pid 1124] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1120] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1119] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1124] <... openat resumed>) = 4 [pid 1120] <... futex resumed>) = 1 [pid 1119] <... futex resumed>) = 1 [pid 1117] <... futex resumed>) = 0 [pid 1115] <... futex resumed>) = 0 [pid 1124] ioctl(4, LOOP_SET_FD, 3 [pid 1120] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1119] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1117] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1115] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1124] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1120] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1119] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1117] <... futex resumed>) = 0 [pid 1115] <... futex resumed>) = 0 [pid 1124] ioctl(4, LOOP_CLR_FD [pid 1120] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1119] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1117] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1115] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1120] <... mmap resumed>) = 0x20000000 [pid 1124] <... ioctl resumed>) = 0 [pid 1120] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1119] <... mmap resumed>) = 0x20000000 [pid 1121] ioctl(7, LOOP_SET_FD, 6 [pid 1120] <... futex resumed>) = 1 [pid 1119] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1117] <... futex resumed>) = 0 [pid 1122] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1121] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1120] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1119] <... futex resumed>) = 1 [pid 1117] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1115] <... futex resumed>) = 0 [pid 1122] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1121] close(7 [pid 1120] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1119] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1117] <... futex resumed>) = 0 [pid 1115] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1122] <... futex resumed>) = 1 [pid 1121] <... close resumed>) = 0 [pid 1120] memfd_create("syzkaller", 0 [pid 1119] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1118] <... futex resumed>) = 0 [pid 1117] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1115] <... futex resumed>) = 0 [pid 1124] ioctl(4, LOOP_SET_FD, 3 [pid 1122] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1121] close(6 [pid 1120] <... memfd_create resumed>) = 6 [pid 1119] memfd_create("syzkaller", 0 [pid 1118] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1115] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1124] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1122] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1121] <... close resumed>) = 0 [pid 1118] <... futex resumed>) = 0 [pid 1122] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1121] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1118] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1122] <... open resumed>) = 5 [pid 1121] <... futex resumed>) = 1 [pid 1116] <... futex resumed>) = 0 [pid 1122] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1121] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1116] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1122] <... futex resumed>) = 1 [pid 1121] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1118] <... futex resumed>) = 0 [pid 1116] <... futex resumed>) = 0 [pid 1122] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1121] mknod(0x20000000, 000 [pid 1118] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1116] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1122] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1121] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1118] <... futex resumed>) = 0 [pid 1122] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1121] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1118] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1122] <... mmap resumed>) = 0x20000000 [pid 1121] <... futex resumed>) = 1 [pid 1116] <... futex resumed>) = 0 [pid 1122] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1121] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1116] exit_group(0 [pid 1122] <... futex resumed>) = 1 [pid 1121] <... futex resumed>) = ? [pid 1118] <... futex resumed>) = 0 [pid 1116] <... exit_group resumed>) = ? [pid 1124] close(4 [pid 1122] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1121] +++ exited with 0 +++ [pid 1120] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1119] <... memfd_create resumed>) = 6 [pid 1118] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1116] +++ exited with 0 +++ [pid 1124] <... close resumed>) = 0 [pid 1122] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1120] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1119] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1118] <... futex resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1116, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1124] close(3 [pid 1122] memfd_create("syzkaller", 0 [pid 1118] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1122] <... memfd_create resumed>) = 6 [pid 305] <... restart_syscall resumed>) = 0 [pid 1122] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1120] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1124] <... close resumed>) = 0 [pid 1122] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1119] <... mmap resumed>) = 0x7fe6f03b1000 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1124] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1122] <... write resumed>) = 131072 [pid 1120] <... write resumed>) = 131072 [pid 305] <... openat resumed>) = 3 [pid 1122] munmap(0x7fe6f03b1000, 138412032 [pid 305] ioctl(3, LOOP_CLR_FD [pid 1122] <... munmap resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 1122] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1120] munmap(0x7fe6f03b1000, 138412032 [pid 1119] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 305] close(3 [pid 1124] <... futex resumed>) = 1 [pid 1123] <... futex resumed>) = 0 [pid 1122] <... openat resumed>) = 7 [pid 305] <... close resumed>) = 0 [pid 1122] ioctl(7, LOOP_SET_FD, 6 [pid 1120] <... munmap resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1124] chdir("./file0" [pid 1123] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1122] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1120] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1119] <... write resumed>) = 131072 [pid 1124] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1123] <... futex resumed>) = 0 [pid 1122] ioctl(7, LOOP_CLR_FD [pid 1120] <... openat resumed>) = 7 [pid 1119] munmap(0x7fe6f03b1000, 138412032 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1125 [pid 1124] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1123] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1122] <... ioctl resumed>) = 0 [pid 1120] ioctl(7, LOOP_SET_FD, 6 [pid 1119] <... munmap resumed>) = 0 [pid 1124] <... futex resumed>) = 0 [pid 1123] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1120] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1119] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1124] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1123] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1120] ioctl(7, LOOP_CLR_FD [pid 1119] <... openat resumed>) = 7 [pid 1124] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1123] <... futex resumed>) = 0 [pid 1120] <... ioctl resumed>) = 0 [pid 1119] ioctl(7, LOOP_SET_FD, 6 [pid 1124] creat("./bus", 000 [pid 1123] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1119] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 1125 attached [pid 1122] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1122] close(7) = 0 [pid 1122] close(6) = 0 [pid 1122] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1118] <... futex resumed>) = 0 [pid 1122] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1118] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1122] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1118] <... futex resumed>) = 0 [pid 1122] mknod(0x20000000, 000 [pid 1118] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1122] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1122] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1118] <... futex resumed>) = 0 [pid 1122] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1118] exit_group(0 [pid 1122] <... futex resumed>) = ? [pid 1118] <... exit_group resumed>) = ? [pid 1122] +++ exited with 0 +++ [pid 1118] +++ exited with 0 +++ [pid 1119] ioctl(7, LOOP_CLR_FD [pid 1124] <... creat resumed>) = 3 [pid 1119] <... ioctl resumed>) = 0 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1118, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1124] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 1124] <... futex resumed>) = 1 [pid 1123] <... futex resumed>) = 0 [pid 1124] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1123] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1124] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1123] <... futex resumed>) = 0 [pid 1124] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1123] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1125] set_robust_list(0x5555636e06a0, 24 [pid 1124] <... openat resumed>) = 4 [pid 1120] ioctl(7, LOOP_SET_FD, 6 [pid 1124] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1120] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1124] <... futex resumed>) = 1 [pid 1123] <... futex resumed>) = 0 [pid 1120] close(7 [pid 1119] ioctl(7, LOOP_SET_FD, 6 [pid 1124] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1123] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1120] <... close resumed>) = 0 [pid 1124] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1123] <... futex resumed>) = 0 [pid 1120] close(6 [pid 1119] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1124] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1123] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1125] <... set_robust_list resumed>) = 0 [pid 1120] <... close resumed>) = 0 [pid 1119] close(7 [pid 1125] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1124] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1120] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1119] <... close resumed>) = 0 [pid 1124] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1120] <... futex resumed>) = 1 [pid 1119] close(6 [pid 1117] <... futex resumed>) = 0 [pid 1124] <... futex resumed>) = 1 [pid 1123] <... futex resumed>) = 0 [pid 1120] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1125] <... prctl resumed>) = 0 [pid 1125] setpgid(0, 0 [pid 1123] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1119] <... close resumed>) = 0 [pid 1120] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1117] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1124] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1123] <... futex resumed>) = 0 [pid 1120] mknod(0x20000000, 000 [pid 1119] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1117] <... futex resumed>) = 0 [pid 1124] <... open resumed>) = 5 [pid 1123] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1120] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1119] <... futex resumed>) = 1 [pid 1117] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1115] <... futex resumed>) = 0 [pid 1124] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1123] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1120] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1119] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1117] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1115] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1125] <... setpgid resumed>) = 0 [pid 1124] <... futex resumed>) = 0 [pid 1123] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1120] <... futex resumed>) = 0 [pid 1119] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1117] exit_group(0 [pid 1115] <... futex resumed>) = 0 [pid 1125] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1124] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1123] <... futex resumed>) = 0 [pid 1119] mknod(0x20000000, 000 [pid 1117] <... exit_group resumed>) = ? [pid 1115] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... restart_syscall resumed>) = 0 [pid 1125] <... openat resumed>) = 3 [pid 1124] <... mmap resumed>) = 0x20000000 [pid 1123] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1119] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1125] write(3, "1000", 4) = 4 [pid 1124] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1120] +++ exited with 0 +++ [pid 1119] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1117] +++ exited with 0 +++ [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1125] close(3 [pid 1124] <... futex resumed>) = 1 [pid 1123] <... futex resumed>) = 0 [pid 1119] <... futex resumed>) = 1 [pid 1115] <... futex resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1117, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 304] <... openat resumed>) = 3 [pid 1125] <... close resumed>) = 0 [pid 1124] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1123] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1119] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1115] exit_group(0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 304] ioctl(3, LOOP_CLR_FDexecuting program [pid 1125] write(1, "executing program\n", 18 [pid 1124] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1123] <... futex resumed>) = 0 [pid 1119] <... futex resumed>) = ? [pid 1115] <... exit_group resumed>) = ? [pid 304] <... ioctl resumed>) = 0 [pid 1125] <... write resumed>) = 18 [pid 1124] memfd_create("syzkaller", 0 [pid 1123] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1119] +++ exited with 0 +++ [pid 304] close(3 [pid 1125] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1124] <... memfd_create resumed>) = 6 [pid 1115] +++ exited with 0 +++ [pid 304] <... close resumed>) = 0 [pid 1125] <... futex resumed>) = 0 [pid 1124] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1125] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1124] <... mmap resumed>) = 0x7fe6f03b1000 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1115, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1125] <... rt_sigaction resumed>NULL, 8) = 0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1126 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1125] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 302] <... openat resumed>) = 3 [pid 1125] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1124] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 302] ioctl(3, LOOP_CLR_FD [pid 1125] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 302] <... ioctl resumed>) = 0 [pid 1125] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1124] <... write resumed>) = 131072 [pid 302] close(3 [pid 1125] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1124] munmap(0x7fe6f03b1000, 138412032 [pid 302] <... close resumed>) = 0 [pid 1125] <... mprotect resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1125] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1124] <... munmap resumed>) = 0 [pid 1125] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1124] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1127 [pid 1125] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1124] <... openat resumed>) = 7 [pid 1124] ioctl(7, LOOP_SET_FD, 6 [pid 1125] <... clone3 resumed> => {parent_tid=[1128]}, 88) = 1128 [pid 1125] rt_sigprocmask(SIG_SETMASK, [], [pid 1124] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1125] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1125] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1124] ioctl(7, LOOP_CLR_FD [pid 1125] <... futex resumed>) = 0 [pid 1125] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1124] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 1126 attached [pid 1126] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1126] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 1124] ioctl(7, LOOP_SET_FD, 6 [pid 306] ioctl(3, LOOP_CLR_FD [pid 1124] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] <... ioctl resumed>) = 0 [pid 1124] close(7 [pid 306] close(3 [pid 1124] <... close resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 1124] close(6 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1124] <... close resumed>) = 0 [pid 1124] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1129 [pid 1124] <... futex resumed>) = 1 [pid 1123] <... futex resumed>) = 0 [pid 1124] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1123] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1124] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1123] <... futex resumed>) = 0 [pid 1124] mknod(0x20000000, 000 [pid 1123] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1124] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1124] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1123] <... futex resumed>) = 0 [pid 1124] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1123] exit_group(0 [pid 1126] setpgid(0, 0 [pid 1124] <... futex resumed>) = ? [pid 1123] <... exit_group resumed>) = ? [pid 1124] +++ exited with 0 +++ [pid 1126] <... setpgid resumed>) = 0 [pid 1126] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1123] +++ exited with 0 +++ [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1123, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 303] restart_syscall(<... resuming interrupted clone ...>executing program [pid 1126] write(3, "1000", 4) = 4 [pid 1126] close(3) = 0 [pid 1126] write(1, "executing program\n", 18) = 18 [pid 1126] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1126] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1126] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1126] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1126] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE./strace-static-x86_64: Process 1128 attached ) = 0 [pid 1128] set_robust_list(0x7fe6f87d19a0, 24 [pid 1126] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1128] <... set_robust_list resumed>) = 0 [pid 1126] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1128] rt_sigprocmask(SIG_SETMASK, [], [pid 1126] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0}./strace-static-x86_64: Process 1129 attached ./strace-static-x86_64: Process 1127 attached [pid 1129] set_robust_list(0x5555636e06a0, 24 [pid 1128] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1127] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1129] <... set_robust_list resumed>) = 0 [pid 1129] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1128] memfd_create("syzkaller", 0 [pid 1127] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1126] <... clone3 resumed> => {parent_tid=[1130]}, 88) = 1130 [pid 1129] <... prctl resumed>) = 0 [pid 1127] <... prctl resumed>) = 0 [pid 1129] setpgid(0, 0 [pid 1128] <... memfd_create resumed>) = 3 [pid 1127] setpgid(0, 0 [pid 1126] rt_sigprocmask(SIG_SETMASK, [], [pid 1129] <... setpgid resumed>) = 0 [pid 1127] <... setpgid resumed>) = 0 [pid 1129] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1128] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1126] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1127] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECexecuting program executing program [pid 1129] <... openat resumed>) = 3 [pid 1128] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1127] <... openat resumed>) = 3 [pid 1126] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1129] write(3, "1000", 4 [pid 1127] write(3, "1000", 4 [pid 1129] <... write resumed>) = 4 [pid 1127] <... write resumed>) = 4 [pid 1129] close(3 [pid 1127] close(3 [pid 1129] <... close resumed>) = 0 [pid 1127] <... close resumed>) = 0 [pid 1129] write(1, "executing program\n", 18 [pid 1127] write(1, "executing program\n", 18 [pid 1129] <... write resumed>) = 18 [pid 1127] <... write resumed>) = 18 [pid 1129] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1128] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1127] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1126] <... futex resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 1126] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1128] <... write resumed>) = 262144 [pid 303] <... openat resumed>) = 3 [pid 303] ioctl(3, LOOP_CLR_FD [pid 1129] <... futex resumed>) = 0 [pid 1127] <... futex resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 1129] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1127] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 303] close(3 [pid 1129] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1127] <... rt_sigaction resumed>NULL, 8) = 0 [pid 303] <... close resumed>) = 0 [pid 1129] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1127] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1130 attached [pid 1129] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1127] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1130] set_robust_list(0x7fe6f87d19a0, 24 [pid 1129] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1127] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1131 [pid 1130] <... set_robust_list resumed>) = 0 [pid 1129] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1128] munmap(0x7fe6f03b1000, 138412032 [pid 1127] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1130] rt_sigprocmask(SIG_SETMASK, [], [pid 1129] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1128] <... munmap resumed>) = 0 [pid 1127] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1130] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1129] <... mprotect resumed>) = 0 [pid 1128] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1127] <... mprotect resumed>) = 0 [pid 1129] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1128] <... openat resumed>) = 4 [pid 1127] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1130] memfd_create("syzkaller", 0 [pid 1129] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1128] ioctl(4, LOOP_SET_FD, 3 [pid 1127] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1130] <... memfd_create resumed>) = 3 [pid 1129] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1128] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1127] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1130] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1128] ioctl(4, LOOP_CLR_FD [pid 1130] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1129] <... clone3 resumed> => {parent_tid=[1132]}, 88) = 1132 [pid 1127] <... clone3 resumed> => {parent_tid=[1133]}, 88) = 1133 [pid 1129] rt_sigprocmask(SIG_SETMASK, [], [pid 1127] rt_sigprocmask(SIG_SETMASK, [], [pid 1129] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1127] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1129] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1127] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1129] <... futex resumed>) = 0 [pid 1127] <... futex resumed>) = 0 [pid 1129] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1127] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1128] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 1132 attached [pid 1132] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1132] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1132] memfd_create("syzkaller", 0) = 3 [pid 1132] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1130] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1128] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1128] close(4) = 0 [pid 1128] close(3) = 0 [pid 1128] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1125] <... futex resumed>) = 0 [pid 1128] chdir("./file0" [pid 1125] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1128] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1125] <... futex resumed>) = 0 [pid 1128] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1125] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1128] <... futex resumed>) = 0 [pid 1125] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1128] creat("./bus", 000 [pid 1125] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1128] <... creat resumed>) = 3 [pid 1125] <... futex resumed>) = 0 [pid 1128] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1125] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1128] <... futex resumed>) = 0 [pid 1125] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1128] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1125] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1128] <... openat resumed>) = 4 [pid 1125] <... futex resumed>) = 0 [pid 1128] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1125] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1128] <... futex resumed>) = 0 [pid 1125] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1128] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1125] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1125] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1131 attached [pid 1130] <... write resumed>) = 262144 [pid 1128] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1130] munmap(0x7fe6f03b1000, 138412032 [pid 1131] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1130] <... munmap resumed>) = 0 [pid 1128] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1130] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1131] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1130] <... openat resumed>) = 4 [pid 1128] <... futex resumed>) = 1 [pid 1125] <... futex resumed>) = 0 [pid 1131] <... prctl resumed>) = 0 [pid 1130] ioctl(4, LOOP_SET_FD, 3 [pid 1128] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1125] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1133 attached [pid 1131] setpgid(0, 0 [pid 1130] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1128] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1125] <... futex resumed>) = 0 [pid 1133] set_robust_list(0x7fe6f87d19a0, 24 [pid 1131] <... setpgid resumed>) = 0 [pid 1130] ioctl(4, LOOP_CLR_FD [pid 1128] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1125] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1133] <... set_robust_list resumed>) = 0 [pid 1131] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1130] <... ioctl resumed>) = 0 [pid 1128] <... open resumed>) = 5 [pid 1133] rt_sigprocmask(SIG_SETMASK, [], [pid 1131] <... openat resumed>) = 3 [pid 1128] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1133] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1131] write(3, "1000", 4 [pid 1128] <... futex resumed>) = 1 [pid 1125] <... futex resumed>) = 0 [pid 1133] memfd_create("syzkaller", 0 [pid 1131] <... write resumed>) = 4 [pid 1128] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1125] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1128] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1125] <... futex resumed>) = 0 [pid 1128] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1125] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1128] <... mmap resumed>) = 0x20000000 [pid 1128] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1125] <... futex resumed>) = 0 [pid 1128] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1125] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1128] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1125] <... futex resumed>) = 0 [pid 1128] memfd_create("syzkaller", 0 [pid 1125] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1128] <... memfd_create resumed>) = 6 [pid 1128] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1133] <... memfd_create resumed>) = 3 [pid 1132] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1131] close(3 [pid 1128] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1131] <... close resumed>) = 0 [pid 1130] ioctl(4, LOOP_SET_FD, 3 [pid 1128] <... write resumed>) = 131072 executing program [pid 1131] write(1, "executing program\n", 18 [pid 1130] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1128] munmap(0x7fe6f03b1000, 138412032 [pid 1133] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1131] <... write resumed>) = 18 [pid 1130] close(4 [pid 1128] <... munmap resumed>) = 0 [pid 1133] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1131] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1130] <... close resumed>) = 0 [pid 1128] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1132] <... write resumed>) = 262144 [pid 1131] <... futex resumed>) = 0 [pid 1130] close(3 [pid 1128] <... openat resumed>) = 7 [pid 1131] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1128] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1131] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1130] <... close resumed>) = 0 [pid 1128] ioctl(7, LOOP_CLR_FD [pid 1131] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1130] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1128] <... ioctl resumed>) = 0 [pid 1131] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1130] <... futex resumed>) = 1 [pid 1126] <... futex resumed>) = 0 [pid 1132] munmap(0x7fe6f03b1000, 138412032 [pid 1131] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1130] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1126] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1131] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1130] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1126] <... futex resumed>) = 0 [pid 1133] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1132] <... munmap resumed>) = 0 [pid 1131] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1130] chdir("./file0" [pid 1126] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1132] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1131] <... mprotect resumed>) = 0 [pid 1130] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1132] <... openat resumed>) = 4 [pid 1131] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1130] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1128] ioctl(7, LOOP_SET_FD, 6 [pid 1132] ioctl(4, LOOP_SET_FD, 3 [pid 1131] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1130] <... futex resumed>) = 1 [pid 1128] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1126] <... futex resumed>) = 0 [pid 1132] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1131] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1130] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1128] close(7 [pid 1126] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1133] <... write resumed>) = 262144 [pid 1132] ioctl(4, LOOP_CLR_FD [pid 1130] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1128] <... close resumed>) = 0 [pid 1126] <... futex resumed>) = 0 [pid 1133] munmap(0x7fe6f03b1000, 138412032 [pid 1132] <... ioctl resumed>) = 0 [pid 1131] <... clone3 resumed> => {parent_tid=[1134]}, 88) = 1134 [pid 1130] creat("./bus", 000 [pid 1128] close(6 [pid 1126] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1133] <... munmap resumed>) = 0 [pid 1131] rt_sigprocmask(SIG_SETMASK, [], [pid 1130] <... creat resumed>) = 3 [pid 1128] <... close resumed>) = 0 [pid 1133] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1131] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1130] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1128] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1133] <... openat resumed>) = 4 [pid 1131] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1130] <... futex resumed>) = 1 [pid 1128] <... futex resumed>) = 1 [pid 1126] <... futex resumed>) = 0 [pid 1125] <... futex resumed>) = 0 [pid 1133] ioctl(4, LOOP_SET_FD, 3 [pid 1131] <... futex resumed>) = 0 [pid 1130] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1128] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1126] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1125] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1134 attached [pid 1133] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1131] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1130] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1128] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1126] <... futex resumed>) = 0 [pid 1125] <... futex resumed>) = 0 [pid 1134] set_robust_list(0x7fe6f87d19a0, 24 [pid 1133] ioctl(4, LOOP_CLR_FD [pid 1132] ioctl(4, LOOP_SET_FD, 3 [pid 1130] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1128] mknod(0x20000000, 000 [pid 1126] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1125] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1134] <... set_robust_list resumed>) = 0 [pid 1133] <... ioctl resumed>) = 0 [pid 1132] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1130] <... openat resumed>) = 4 [pid 1128] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1134] rt_sigprocmask(SIG_SETMASK, [], [pid 1132] close(4 [pid 1130] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1128] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1134] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1132] <... close resumed>) = 0 [pid 1130] <... futex resumed>) = 1 [pid 1128] <... futex resumed>) = 1 [pid 1126] <... futex resumed>) = 0 [pid 1125] <... futex resumed>) = 0 [pid 1132] close(3 [pid 1130] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1128] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1126] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1125] exit_group(0 [pid 1132] <... close resumed>) = 0 [pid 1130] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1128] <... futex resumed>) = ? [pid 1126] <... futex resumed>) = 0 [pid 1125] <... exit_group resumed>) = ? [pid 1133] ioctl(4, LOOP_SET_FD, 3 [pid 1132] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1130] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1128] +++ exited with 0 +++ [pid 1126] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1125] +++ exited with 0 +++ [pid 1134] memfd_create("syzkaller", 0 [pid 1133] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1132] <... futex resumed>) = 1 [pid 1129] <... futex resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1125, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1134] <... memfd_create resumed>) = 3 [pid 1133] close(4 [pid 1132] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1129] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1134] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1133] <... close resumed>) = 0 [pid 1132] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1130] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1129] <... futex resumed>) = 0 [pid 1134] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1133] close(3 [pid 1132] chdir("./file0" [pid 1130] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1129] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1132] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1130] <... futex resumed>) = 1 [pid 1126] <... futex resumed>) = 0 [pid 1132] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1130] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1126] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1133] <... close resumed>) = 0 [pid 1132] <... futex resumed>) = 1 [pid 1130] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1129] <... futex resumed>) = 0 [pid 1126] <... futex resumed>) = 0 [pid 1133] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1132] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1130] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1129] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1126] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1133] <... futex resumed>) = 1 [pid 1132] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1130] <... open resumed>) = 5 [pid 1129] <... futex resumed>) = 0 [pid 1127] <... futex resumed>) = 0 [pid 1133] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1132] creat("./bus", 000 [pid 1130] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1129] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1127] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1134] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1133] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1132] <... creat resumed>) = 3 [pid 1130] <... futex resumed>) = 1 [pid 1127] <... futex resumed>) = 0 [pid 1126] <... futex resumed>) = 0 [pid 1133] chdir("./file0" [pid 1132] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1130] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1127] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1126] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... restart_syscall resumed>) = 0 [pid 1133] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1132] <... futex resumed>) = 1 [pid 1130] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1129] <... futex resumed>) = 0 [pid 1126] <... futex resumed>) = 0 [pid 1134] <... write resumed>) = 262144 [pid 1133] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1132] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1130] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1129] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1126] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1134] munmap(0x7fe6f03b1000, 138412032 [pid 1133] <... futex resumed>) = 1 [pid 1132] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1130] <... mmap resumed>) = 0x20000000 [pid 1129] <... futex resumed>) = 0 [pid 1127] <... futex resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1134] <... munmap resumed>) = 0 [pid 1133] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1132] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1130] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1129] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1127] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... openat resumed>) = 3 [pid 1134] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1133] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1132] <... openat resumed>) = 4 [pid 1130] <... futex resumed>) = 1 [pid 1127] <... futex resumed>) = 0 [pid 1126] <... futex resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 1134] <... openat resumed>) = 4 [pid 1133] creat("./bus", 000 [pid 1132] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1130] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1127] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1126] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... ioctl resumed>) = 0 [pid 1134] ioctl(4, LOOP_SET_FD, 3 [pid 1133] <... creat resumed>) = 3 [pid 1132] <... futex resumed>) = 1 [pid 1130] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1129] <... futex resumed>) = 0 [pid 1126] <... futex resumed>) = 0 [pid 305] close(3 [pid 1134] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1133] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1132] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1130] memfd_create("syzkaller", 0 [pid 1129] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1126] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 305] <... close resumed>) = 0 [pid 1134] ioctl(4, LOOP_CLR_FD [pid 1133] <... futex resumed>) = 1 [pid 1132] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1130] <... memfd_create resumed>) = 6 [pid 1129] <... futex resumed>) = 0 [pid 1127] <... futex resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1134] <... ioctl resumed>) = 0 [pid 1133] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1132] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1130] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1129] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1127] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1133] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1132] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1135 [pid 1132] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1129] <... futex resumed>) = 0 [pid 1132] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1133] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1130] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1129] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1127] <... futex resumed>) = 0 [pid 1133] <... openat resumed>) = 4 [pid 1132] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1129] <... futex resumed>) = 0 [pid 1132] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1129] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1132] <... open resumed>) = 5 [pid 1132] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1129] <... futex resumed>) = 0 [pid 1133] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1132] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1130] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1129] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1127] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1134] ioctl(4, LOOP_SET_FD, 3 [pid 1133] <... futex resumed>) = 0 [pid 1132] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1129] <... futex resumed>) = 0 [pid 1134] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1133] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1132] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1130] <... write resumed>) = 131072 [pid 1129] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1127] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1134] close(4 [pid 1132] <... mmap resumed>) = 0x20000000 [pid 1130] munmap(0x7fe6f03b1000, 138412032 [pid 1127] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1134] <... close resumed>) = 0 [pid 1132] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1134] close(3 [pid 1133] <... futex resumed>) = 0 [pid 1132] <... futex resumed>) = 1 [pid 1130] <... munmap resumed>) = 0 [pid 1129] <... futex resumed>) = 0 [pid 1127] <... futex resumed>) = 1 [pid 1132] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1129] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1132] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1129] <... futex resumed>) = 0 [pid 1134] <... close resumed>) = 0 [pid 1133] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1132] memfd_create("syzkaller", 0 [pid 1130] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1129] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1127] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1134] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1133] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1132] <... memfd_create resumed>) = 6 [pid 1130] <... openat resumed>) = 7 [pid 1132] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1132] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 1132] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1132] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 7 [pid 1132] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1132] ioctl(7, LOOP_CLR_FD) = 0 [pid 1134] <... futex resumed>) = 1 [pid 1133] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1131] <... futex resumed>) = 0 [pid 1130] ioctl(7, LOOP_SET_FD, 6 [pid 1134] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1133] <... futex resumed>) = 1 [pid 1131] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1130] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1127] <... futex resumed>) = 0 [pid 1134] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1133] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1131] <... futex resumed>) = 0 [pid 1130] ioctl(7, LOOP_CLR_FD [pid 1127] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1134] chdir("./file0" [pid 1133] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1131] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1130] <... ioctl resumed>) = 0 [pid 1127] <... futex resumed>) = 0 [pid 1134] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1133] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1127] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1134] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1133] <... open resumed>) = 5 [pid 1134] <... futex resumed>) = 1 [pid 1133] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1131] <... futex resumed>) = 0 [pid 1134] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1133] <... futex resumed>) = 1 [pid 1131] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1127] <... futex resumed>) = 0 [pid 1134] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1133] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1131] <... futex resumed>) = 0 [pid 1127] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1134] creat("./bus", 000 [pid 1133] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1132] ioctl(7, LOOP_SET_FD, 6 [pid 1131] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1127] <... futex resumed>) = 0 [pid 1134] <... creat resumed>) = 3 [pid 1133] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1132] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1134] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1132] close(7 [pid 1127] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1134] <... futex resumed>) = 1 [pid 1133] <... mmap resumed>) = 0x20000000 [pid 1132] <... close resumed>) = 0 [pid 1131] <... futex resumed>) = 0 [pid 1130] ioctl(7, LOOP_SET_FD, 6./strace-static-x86_64: Process 1135 attached [pid 1134] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1133] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1132] close(6 [pid 1131] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1130] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1135] set_robust_list(0x5555636e06a0, 24 [pid 1134] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1133] <... futex resumed>) = 1 [pid 1132] <... close resumed>) = 0 [pid 1131] <... futex resumed>) = 0 [pid 1130] close(7 [pid 1127] <... futex resumed>) = 0 [pid 1135] <... set_robust_list resumed>) = 0 [pid 1134] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1133] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1132] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1129] <... futex resumed>) = 0 [pid 1132] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1129] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1132] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1129] <... futex resumed>) = 0 [pid 1132] mknod(0x20000000, 000 [pid 1129] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1132] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1132] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1129] <... futex resumed>) = 0 [pid 1132] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1129] exit_group(0 [pid 1132] <... futex resumed>) = ? [pid 1131] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1130] <... close resumed>) = 0 [pid 1129] <... exit_group resumed>) = ? [pid 1127] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1135] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1134] <... openat resumed>) = 4 [pid 1133] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1132] +++ exited with 0 +++ [pid 1130] close(6 [pid 1129] +++ exited with 0 +++ [pid 1127] <... futex resumed>) = 0 [pid 1135] <... prctl resumed>) = 0 [pid 1134] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1133] memfd_create("syzkaller", 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1129, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1134] <... futex resumed>) = 1 [pid 1131] <... futex resumed>) = 0 [pid 1130] <... close resumed>) = 0 [pid 1133] <... memfd_create resumed>) = 6 [pid 1127] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 1135] setpgid(0, 0 [pid 1134] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1133] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1131] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1130] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1135] <... setpgid resumed>) = 0 [pid 1134] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1133] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1131] <... futex resumed>) = 0 [pid 1130] <... futex resumed>) = 1 [pid 1126] <... futex resumed>) = 0 [pid 1134] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1126] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1126] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1133] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1131] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1130] mknod(0x20000000, 000 [pid 1134] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1130] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1134] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1133] <... write resumed>) = 131072 [pid 1130] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1134] <... futex resumed>) = 1 [pid 1133] munmap(0x7fe6f03b1000, 138412032 [pid 1131] <... futex resumed>) = 0 [pid 1135] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1130] <... futex resumed>) = 1 [pid 1126] <... futex resumed>) = 0 [pid 1134] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1133] <... munmap resumed>) = 0 [pid 1131] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1130] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1126] exit_group(0 [pid 1135] <... openat resumed>) = 3 [pid 1134] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1133] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1135] write(3, "1000", 4 [pid 1131] <... futex resumed>) = 0 [pid 1130] <... futex resumed>) = ? [pid 1126] <... exit_group resumed>) = ? [pid 1135] <... write resumed>) = 4 [pid 1134] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1133] <... openat resumed>) = 7 [pid 1131] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1130] +++ exited with 0 +++ [pid 1126] +++ exited with 0 +++ [pid 1135] close(3 [pid 1134] <... open resumed>) = 5 [pid 1133] ioctl(7, LOOP_SET_FD, 6 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1126, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1135] <... close resumed>) = 0 [pid 1134] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1133] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] restart_syscall(<... resuming interrupted clone ...>executing program [pid 1135] write(1, "executing program\n", 18 [pid 1134] <... futex resumed>) = 1 [pid 1133] ioctl(7, LOOP_CLR_FD [pid 1131] <... futex resumed>) = 0 [pid 1135] <... write resumed>) = 18 [pid 1134] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1133] <... ioctl resumed>) = 0 [pid 1131] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1135] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1134] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1131] <... futex resumed>) = 0 [pid 1135] <... futex resumed>) = 0 [pid 1134] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1131] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1135] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1134] <... mmap resumed>) = 0x20000000 [pid 1135] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1134] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1135] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1134] <... futex resumed>) = 1 [pid 1135] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1131] <... futex resumed>) = 0 [pid 1135] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1134] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1131] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1135] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1134] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1131] <... futex resumed>) = 0 [pid 1135] <... mprotect resumed>) = 0 [pid 1134] memfd_create("syzkaller", 0 [pid 1131] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1135] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1134] <... memfd_create resumed>) = 6 [pid 1135] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1134] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1135] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1134] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1134] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1133] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 306] <... restart_syscall resumed>) = 0 [pid 1134] <... write resumed>) = 131072 [pid 1133] close(7 [pid 1134] munmap(0x7fe6f03b1000, 138412032 [pid 1133] <... close resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1135] <... clone3 resumed> => {parent_tid=[1136]}, 88) = 1136 [pid 1134] <... munmap resumed>) = 0 [pid 1133] close(6 [pid 306] <... openat resumed>) = 3 [pid 1135] rt_sigprocmask(SIG_SETMASK, [], [pid 1134] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 306] ioctl(3, LOOP_CLR_FD [pid 1135] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1134] <... openat resumed>) = 7 [pid 1133] <... close resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 1135] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1134] ioctl(7, LOOP_SET_FD, 6 [pid 1133] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 1137 ./strace-static-x86_64: Process 1137 attached ./strace-static-x86_64: Process 1136 attached [pid 1136] set_robust_list(0x7fe6f87d19a0, 24 [pid 1137] set_robust_list(0x5555636e06a0, 24 [pid 1136] <... set_robust_list resumed>) = 0 [pid 1136] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1136] memfd_create("syzkaller", 0 [pid 1137] <... set_robust_list resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 304] ioctl(3, LOOP_CLR_FD [pid 1135] <... futex resumed>) = 0 [pid 1134] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1133] <... futex resumed>) = 1 [pid 1127] <... futex resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 1135] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1134] ioctl(7, LOOP_CLR_FD [pid 1133] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1127] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] close(3 [pid 1134] <... ioctl resumed>) = 0 [pid 1133] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1127] <... futex resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 1133] mknod(0x20000000, 000 [pid 1127] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1133] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1133] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1138 [pid 1133] <... futex resumed>) = 1 [pid 1127] <... futex resumed>) = 0 [pid 1133] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1127] exit_group(0 [pid 1134] ioctl(7, LOOP_SET_FD, 6 [pid 1133] <... futex resumed>) = ? [pid 1127] <... exit_group resumed>) = ? [pid 1134] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1133] +++ exited with 0 +++ [pid 1137] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1136] <... memfd_create resumed>) = 3 [pid 1134] close(7 [pid 1127] +++ exited with 0 +++ [pid 1134] <... close resumed>) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1127, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 1134] close(6 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 1137] <... prctl resumed>) = 0 [pid 1134] <... close resumed>) = 0 [pid 1134] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1131] <... futex resumed>) = 0 [pid 1134] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1131] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1134] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1131] <... futex resumed>) = 0 [pid 1134] mknod(0x20000000, 000 [pid 1131] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1134] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1134] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1131] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1138 attached [pid 1134] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1131] exit_group(0 [pid 1138] set_robust_list(0x5555636e06a0, 24 [pid 1134] <... futex resumed>) = ? [pid 1131] <... exit_group resumed>) = ? [pid 1134] +++ exited with 0 +++ [pid 1137] setpgid(0, 0 [pid 1136] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1131] +++ exited with 0 +++ [pid 1137] <... setpgid resumed>) = 0 [pid 1136] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1138] <... set_robust_list resumed>) = 0 [pid 1137] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1131, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] <... restart_syscall resumed>) = 0 [pid 1137] <... openat resumed>) = 3 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1137] write(3, "1000", 4) = 4 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1137] close(3 [pid 302] <... openat resumed>) = 3 [pid 1137] <... close resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FDexecuting program [pid 1137] write(1, "executing program\n", 18 [pid 302] <... ioctl resumed>) = 0 [pid 1137] <... write resumed>) = 18 [pid 302] close(3 [pid 1137] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... close resumed>) = 0 [pid 1137] <... futex resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1138] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1137] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1139 [pid 1138] <... prctl resumed>) = 0 [pid 1137] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1137] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 303] <... openat resumed>) = 3 [pid 1137] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 303] ioctl(3, LOOP_CLR_FD [pid 1137] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1136] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 303] <... ioctl resumed>) = 0 [pid 1137] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 303] close(3 [pid 1137] <... mprotect resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 1137] rt_sigprocmask(SIG_BLOCK, ~[], [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1137] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1136] <... write resumed>) = 262144 [pid 1137] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1140 [pid 1137] <... clone3 resumed> => {parent_tid=[1141]}, 88) = 1141 [pid 1137] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1137] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1137] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1136] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1136] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 1136] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1136] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1140 attached [pid 1140] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1140] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1138] setpgid(0, 0./strace-static-x86_64: Process 1141 attached ./strace-static-x86_64: Process 1139 attached ) = 0 [pid 1138] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1139] set_robust_list(0x5555636e06a0, 24 [pid 1141] set_robust_list(0x7fe6f87d19a0, 24 [pid 1136] ioctl(4, LOOP_SET_FD, 3 [pid 1139] <... set_robust_list resumed>) = 0 [pid 1138] <... openat resumed>) = 3 [pid 1141] <... set_robust_list resumed>) = 0 [pid 1138] write(3, "1000", 4) = 4 [pid 1136] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1138] close(3executing program [pid 1139] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1141] rt_sigprocmask(SIG_SETMASK, [], [pid 1140] setpgid(0, 0 [pid 1138] <... close resumed>) = 0 [pid 1136] close(4 [pid 1138] write(1, "executing program\n", 18 [pid 1141] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1139] <... prctl resumed>) = 0 [pid 1138] <... write resumed>) = 18 [pid 1141] memfd_create("syzkaller", 0 [pid 1139] setpgid(0, 0 [pid 1138] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1136] <... close resumed>) = 0 [pid 1141] <... memfd_create resumed>) = 3 [pid 1139] <... setpgid resumed>) = 0 [pid 1138] <... futex resumed>) = 0 [pid 1141] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1138] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1141] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1139] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1138] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1136] close(3 [pid 1139] <... openat resumed>) = 3 [pid 1138] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1136] <... close resumed>) = 0 [pid 1139] write(3, "1000", 4 [pid 1138] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1136] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1138] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1139] <... write resumed>) = 4 [pid 1136] <... futex resumed>) = 1 [pid 1136] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1139] close(3 [pid 1138] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1135] <... futex resumed>) = 0 [pid 1138] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1135] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1139] <... close resumed>) = 0 [pid 1138] <... mprotect resumed>) = 0 [pid 1135] <... futex resumed>) = 1 executing program [pid 1139] write(1, "executing program\n", 18 [pid 1138] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1136] <... futex resumed>) = 0 [pid 1135] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1139] <... write resumed>) = 18 [pid 1138] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1139] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1138] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1136] chdir("./file0" [pid 1139] <... futex resumed>) = 0 [pid 1136] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1139] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1138] <... clone3 resumed> => {parent_tid=[1142]}, 88) = 1142 [pid 1141] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1139] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1138] rt_sigprocmask(SIG_SETMASK, [], [pid 1139] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1138] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1140] <... setpgid resumed>) = 0 [pid 1139] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1138] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1136] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1139] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1138] <... futex resumed>) = 0 [pid 1140] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1139] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1138] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1136] <... futex resumed>) = 1 [pid 1135] <... futex resumed>) = 0 [pid 1141] <... write resumed>) = 262144 [pid 1140] <... openat resumed>) = 3 [pid 1139] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1136] creat("./bus", 000 [pid 1135] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1141] munmap(0x7fe6f03b1000, 138412032 [pid 1140] write(3, "1000", 4 [pid 1139] <... mprotect resumed>) = 0 [pid 1136] <... creat resumed>) = 3 [pid 1135] <... futex resumed>) = 0 [pid 1141] <... munmap resumed>) = 0 [pid 1140] <... write resumed>) = 4 [pid 1139] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1136] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1135] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1141] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1140] close(3 [pid 1139] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1136] <... futex resumed>) = 0 [pid 1135] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1141] <... openat resumed>) = 4 [pid 1140] <... close resumed>) = 0 [pid 1139] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1136] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1135] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 1141] ioctl(4, LOOP_SET_FD, 3 [pid 1140] write(1, "executing program\n", 18 [pid 1136] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1135] <... futex resumed>) = 0 [pid 1141] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1140] <... write resumed>) = 18 [pid 1139] <... clone3 resumed> => {parent_tid=[1143]}, 88) = 1143 [pid 1136] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1135] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1141] ioctl(4, LOOP_CLR_FD [pid 1140] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1139] rt_sigprocmask(SIG_SETMASK, [], [pid 1136] <... openat resumed>) = 4 [pid 1141] <... ioctl resumed>) = 0 [pid 1140] <... futex resumed>) = 0 [pid 1139] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1136] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1140] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1139] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1136] <... futex resumed>) = 1 [pid 1135] <... futex resumed>) = 0 [pid 1140] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1139] <... futex resumed>) = 0 [pid 1136] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1135] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1140] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1139] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1136] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1135] <... futex resumed>) = 0 [pid 1140] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1136] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1135] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1140] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1140] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1140] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1140] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1141] ioctl(4, LOOP_SET_FD, 3 [pid 1140] <... clone3 resumed> => {parent_tid=[1144]}, 88) = 1144 [pid 1141] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1140] rt_sigprocmask(SIG_SETMASK, [], [pid 1141] close(4 [pid 1140] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1136] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1141] <... close resumed>) = 0 [pid 1140] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1136] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1141] close(3 [pid 1140] <... futex resumed>) = 0 [pid 1136] <... futex resumed>) = 1 [pid 1135] <... futex resumed>) = 0 [pid 1140] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1136] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1135] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1136] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1135] <... futex resumed>) = 0 [pid 1141] <... close resumed>) = 0 [pid 1136] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1135] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1136] <... open resumed>) = 5 [pid 1136] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1135] <... futex resumed>) = 0 [pid 1141] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1136] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1135] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1141] <... futex resumed>) = 1 [pid 1137] <... futex resumed>) = 0 [pid 1136] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1135] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1142 attached [pid 1141] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1137] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1136] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1135] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1142] set_robust_list(0x7fe6f87d19a0, 24 [pid 1141] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1137] <... futex resumed>) = 0 [pid 1136] <... mmap resumed>) = 0x20000000 [pid 1142] <... set_robust_list resumed>) = 0 [pid 1141] chdir("./file0" [pid 1137] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1136] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1142] rt_sigprocmask(SIG_SETMASK, [], [pid 1141] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1136] <... futex resumed>) = 1 [pid 1135] <... futex resumed>) = 0 [pid 1142] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1141] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1136] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1135] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1144 attached ./strace-static-x86_64: Process 1143 attached [pid 1142] memfd_create("syzkaller", 0 [pid 1141] <... futex resumed>) = 1 [pid 1137] <... futex resumed>) = 0 [pid 1136] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1135] <... futex resumed>) = 0 [pid 1144] set_robust_list(0x7fe6f87d19a0, 24 [pid 1143] set_robust_list(0x7fe6f87d19a0, 24 [pid 1142] <... memfd_create resumed>) = 3 [pid 1141] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1137] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1136] memfd_create("syzkaller", 0 [pid 1135] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1144] <... set_robust_list resumed>) = 0 [pid 1143] <... set_robust_list resumed>) = 0 [pid 1142] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1141] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1137] <... futex resumed>) = 0 [pid 1136] <... memfd_create resumed>) = 6 [pid 1144] rt_sigprocmask(SIG_SETMASK, [], [pid 1143] rt_sigprocmask(SIG_SETMASK, [], [pid 1142] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1141] creat("./bus", 000 [pid 1137] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1136] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1144] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1141] <... creat resumed>) = 3 [pid 1136] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1144] memfd_create("syzkaller", 0 [pid 1143] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1142] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1141] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1136] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1144] <... memfd_create resumed>) = 3 [pid 1143] memfd_create("syzkaller", 0 [pid 1141] <... futex resumed>) = 1 [pid 1137] <... futex resumed>) = 0 [pid 1136] <... write resumed>) = 131072 [pid 1144] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1143] <... memfd_create resumed>) = 3 [pid 1141] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1137] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1136] munmap(0x7fe6f03b1000, 138412032 [pid 1144] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1143] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1141] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1137] <... futex resumed>) = 0 [pid 1136] <... munmap resumed>) = 0 [pid 1144] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1143] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1141] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1137] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1136] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1143] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1141] <... openat resumed>) = 4 [pid 1136] <... openat resumed>) = 7 [pid 1144] <... write resumed>) = 262144 [pid 1141] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1136] ioctl(7, LOOP_SET_FD, 6 [pid 1143] <... write resumed>) = 262144 [pid 1142] <... write resumed>) = 262144 [pid 1141] <... futex resumed>) = 1 [pid 1137] <... futex resumed>) = 0 [pid 1136] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1142] munmap(0x7fe6f03b1000, 138412032 [pid 1141] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1137] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1136] ioctl(7, LOOP_CLR_FD [pid 1144] munmap(0x7fe6f03b1000, 138412032 [pid 1142] <... munmap resumed>) = 0 [pid 1141] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1137] <... futex resumed>) = 0 [pid 1136] <... ioctl resumed>) = 0 [pid 1144] <... munmap resumed>) = 0 [pid 1142] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1141] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1137] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1144] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1142] <... openat resumed>) = 4 [pid 1143] munmap(0x7fe6f03b1000, 138412032 [pid 1141] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1144] <... openat resumed>) = 4 [pid 1143] <... munmap resumed>) = 0 [pid 1142] ioctl(4, LOOP_SET_FD, 3 [pid 1141] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1144] ioctl(4, LOOP_SET_FD, 3 [pid 1143] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1142] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1141] <... futex resumed>) = 1 [pid 1137] <... futex resumed>) = 0 [pid 1144] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1143] <... openat resumed>) = 4 [pid 1142] ioctl(4, LOOP_CLR_FD [pid 1141] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1137] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1144] ioctl(4, LOOP_CLR_FD [pid 1143] ioctl(4, LOOP_SET_FD, 3 [pid 1142] <... ioctl resumed>) = 0 [pid 1141] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1137] <... futex resumed>) = 0 [pid 1136] ioctl(7, LOOP_SET_FD, 6 [pid 1144] <... ioctl resumed>) = 0 [pid 1143] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1141] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1137] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1136] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1143] ioctl(4, LOOP_CLR_FD [pid 1141] <... open resumed>) = 5 [pid 1136] close(7 [pid 1143] <... ioctl resumed>) = 0 [pid 1141] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1136] <... close resumed>) = 0 [pid 1141] <... futex resumed>) = 1 [pid 1137] <... futex resumed>) = 0 [pid 1136] close(6 [pid 1141] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1137] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1136] <... close resumed>) = 0 [pid 1142] ioctl(4, LOOP_SET_FD, 3 [pid 1141] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1137] <... futex resumed>) = 0 [pid 1136] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1144] ioctl(4, LOOP_SET_FD, 3 [pid 1142] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1141] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1137] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1136] <... futex resumed>) = 1 [pid 1135] <... futex resumed>) = 0 [pid 1144] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1143] ioctl(4, LOOP_SET_FD, 3 [pid 1142] close(4 [pid 1141] <... mmap resumed>) = 0x20000000 [pid 1136] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1135] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1144] close(4 [pid 1143] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1142] <... close resumed>) = 0 [pid 1141] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1136] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1135] <... futex resumed>) = 0 [pid 1144] <... close resumed>) = 0 [pid 1143] close(4 [pid 1142] close(3 [pid 1141] <... futex resumed>) = 1 [pid 1137] <... futex resumed>) = 0 [pid 1136] mknod(0x20000000, 000 [pid 1135] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1144] close(3 [pid 1143] <... close resumed>) = 0 [pid 1142] <... close resumed>) = 0 [pid 1141] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1137] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1136] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1144] <... close resumed>) = 0 [pid 1143] close(3 [pid 1142] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1141] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1137] <... futex resumed>) = 0 [pid 1136] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1144] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1143] <... close resumed>) = 0 [pid 1142] <... futex resumed>) = 1 [pid 1141] memfd_create("syzkaller", 0 [pid 1138] <... futex resumed>) = 0 [pid 1137] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1136] <... futex resumed>) = 1 [pid 1135] <... futex resumed>) = 0 [pid 1144] <... futex resumed>) = 1 [pid 1143] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1142] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1141] <... memfd_create resumed>) = 6 [pid 1140] <... futex resumed>) = 0 [pid 1138] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1136] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1135] exit_group(0 [pid 1144] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1143] <... futex resumed>) = 1 [pid 1142] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1141] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1140] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1139] <... futex resumed>) = 0 [pid 1138] <... futex resumed>) = 0 [pid 1136] <... futex resumed>) = ? [pid 1135] <... exit_group resumed>) = ? [pid 1144] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1143] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1142] chdir("./file0" [pid 1141] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1140] <... futex resumed>) = 0 [pid 1139] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1138] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1136] +++ exited with 0 +++ [pid 1135] +++ exited with 0 +++ [pid 1144] chdir("./file0" [pid 1143] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1142] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1140] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1135, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1144] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1144] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1140] <... futex resumed>) = 0 [pid 1144] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1140] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1144] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1143] chdir("./file0" [pid 1142] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1141] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1140] <... futex resumed>) = 0 [pid 1139] <... futex resumed>) = 0 [pid 1144] creat("./bus", 000 [pid 1143] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1142] <... futex resumed>) = 1 [pid 1140] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1138] <... futex resumed>) = 0 [pid 1144] <... creat resumed>) = 3 [pid 1143] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1142] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1141] <... write resumed>) = 131072 [pid 1139] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1138] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1144] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1143] <... futex resumed>) = 0 [pid 1142] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1141] munmap(0x7fe6f03b1000, 138412032 [pid 1139] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1138] <... futex resumed>) = 0 [pid 1144] <... futex resumed>) = 1 [pid 1143] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1142] creat("./bus", 000 [pid 1140] <... futex resumed>) = 0 [pid 1144] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1143] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1142] <... creat resumed>) = 3 [pid 1141] <... munmap resumed>) = 0 [pid 1140] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1139] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1138] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1144] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1143] creat("./bus", 000 [pid 1142] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1141] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1140] <... futex resumed>) = 0 [pid 1139] <... futex resumed>) = 0 [pid 1138] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1144] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1143] <... creat resumed>) = 3 [pid 1142] <... futex resumed>) = 0 [pid 1141] <... openat resumed>) = 7 [pid 1140] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1139] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1138] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1144] <... openat resumed>) = 4 [pid 1143] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1142] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1141] ioctl(7, LOOP_SET_FD, 6 [pid 1139] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1138] <... futex resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 1144] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1143] <... futex resumed>) = 0 [pid 1142] <... openat resumed>) = 4 [pid 1141] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1139] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1138] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1144] <... futex resumed>) = 1 [pid 1143] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1142] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1141] ioctl(7, LOOP_CLR_FD [pid 1140] <... futex resumed>) = 0 [pid 1139] <... futex resumed>) = 0 [pid 1138] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1144] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1143] <... openat resumed>) = 4 [pid 1142] <... futex resumed>) = 0 [pid 1141] <... ioctl resumed>) = 0 [pid 1140] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1139] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1138] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1144] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1143] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1142] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1140] <... futex resumed>) = 0 [pid 1139] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1138] <... futex resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 1144] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1143] <... futex resumed>) = 0 [pid 1142] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1140] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1139] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1138] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] ioctl(3, LOOP_CLR_FD [pid 1144] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1143] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1142] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1139] <... futex resumed>) = 0 [pid 1138] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 305] <... ioctl resumed>) = 0 [pid 1144] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1143] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1142] <... futex resumed>) = 0 [pid 1139] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1138] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] close(3 [pid 1144] <... futex resumed>) = 1 [pid 1143] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1142] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1141] ioctl(7, LOOP_SET_FD, 6 [pid 1140] <... futex resumed>) = 0 [pid 1139] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1138] <... futex resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 1144] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1143] <... futex resumed>) = 0 [pid 1142] <... open resumed>) = 5 [pid 1141] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1140] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1139] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1138] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1144] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1143] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1142] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1141] close(7 [pid 1140] <... futex resumed>) = 0 [pid 1139] <... futex resumed>) = 0 [pid 1138] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1144] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1143] <... open resumed>) = 5 [pid 1142] <... futex resumed>) = 0 [pid 1141] <... close resumed>) = 0 [pid 1140] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1139] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1138] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1145 [pid 1144] <... open resumed>) = 5 [pid 1143] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1142] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1141] close(6 [pid 1139] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1138] <... futex resumed>) = 0 [pid 1144] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1143] <... futex resumed>) = 0 [pid 1144] <... futex resumed>) = 1 [pid 1142] <... mmap resumed>) = 0x20000000 [pid 1140] <... futex resumed>) = 0 [pid 1144] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1143] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1142] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1141] <... close resumed>) = 0 [pid 1140] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1139] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1138] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1144] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1143] <... mmap resumed>) = 0x20000000 [pid 1142] <... futex resumed>) = 0 [pid 1141] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1140] <... futex resumed>) = 0 [pid 1139] <... futex resumed>) = 0 [pid 1138] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1144] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1143] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1142] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1141] <... futex resumed>) = 1 [pid 1140] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1139] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1138] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1137] <... futex resumed>) = 0 [pid 1144] <... mmap resumed>) = 0x20000000 [pid 1143] <... futex resumed>) = 0 [pid 1142] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1141] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1139] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1138] <... futex resumed>) = 0 [pid 1137] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1144] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1143] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1142] memfd_create("syzkaller", 0 [pid 1141] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1139] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1138] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1137] <... futex resumed>) = 0 [pid 1144] <... futex resumed>) = 1 [pid 1143] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1142] <... memfd_create resumed>) = 6 [pid 1141] mknod(0x20000000, 000 [pid 1140] <... futex resumed>) = 0 [pid 1139] <... futex resumed>) = 0 [pid 1137] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1144] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1143] memfd_create("syzkaller", 0 [pid 1142] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1141] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1140] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1139] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1145 attached [pid 1144] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1143] <... memfd_create resumed>) = 6 [pid 1142] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1141] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1140] <... futex resumed>) = 0 [pid 1145] set_robust_list(0x5555636e06a0, 24 [pid 1144] memfd_create("syzkaller", 0 [pid 1143] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1140] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1145] <... set_robust_list resumed>) = 0 [pid 1144] <... memfd_create resumed>) = 6 [pid 1145] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1144] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1142] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1141] <... futex resumed>) = 1 [pid 1137] <... futex resumed>) = 0 [pid 1145] <... prctl resumed>) = 0 [pid 1144] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1137] exit_group(0 [pid 1145] setpgid(0, 0 [pid 1144] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1143] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1142] <... write resumed>) = 131072 [pid 1137] <... exit_group resumed>) = ? [pid 1145] <... setpgid resumed>) = 0 [pid 1144] <... write resumed>) = 131072 [pid 1141] +++ exited with 0 +++ [pid 1137] +++ exited with 0 +++ [pid 1145] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1144] munmap(0x7fe6f03b1000, 138412032 [pid 1143] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1142] munmap(0x7fe6f03b1000, 138412032 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1137, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1145] <... openat resumed>) = 3 [pid 1144] <... munmap resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 1145] write(3, "1000", 4 [pid 1144] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1143] <... write resumed>) = 131072 [pid 1145] <... write resumed>) = 4 [pid 1144] <... openat resumed>) = 7 [pid 1143] munmap(0x7fe6f03b1000, 138412032 [pid 1142] <... munmap resumed>) = 0 [pid 1145] close(3 [pid 1144] ioctl(7, LOOP_SET_FD, 6 [pid 1145] <... close resumed>) = 0 [pid 1144] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) executing program [pid 1143] <... munmap resumed>) = 0 [pid 1142] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1145] write(1, "executing program\n", 18 [pid 1144] ioctl(7, LOOP_CLR_FD [pid 1143] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1145] <... write resumed>) = 18 [pid 1144] <... ioctl resumed>) = 0 [pid 1142] <... openat resumed>) = 7 [pid 1145] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1143] <... openat resumed>) = 7 [pid 1142] ioctl(7, LOOP_SET_FD, 6 [pid 1145] <... futex resumed>) = 0 [pid 1143] ioctl(7, LOOP_SET_FD, 6 [pid 1142] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1143] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1142] ioctl(7, LOOP_CLR_FD [pid 1143] ioctl(7, LOOP_CLR_FD [pid 1142] <... ioctl resumed>) = 0 [pid 1143] <... ioctl resumed>) = 0 [pid 1145] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1145] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 306] <... restart_syscall resumed>) = 0 [pid 1145] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1145] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1144] ioctl(7, LOOP_SET_FD, 6 [pid 1145] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1144] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1143] ioctl(7, LOOP_SET_FD, 6 [pid 1142] ioctl(7, LOOP_SET_FD, 6 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1145] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1144] close(7 [pid 1143] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1142] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] <... openat resumed>) = 3 [pid 1145] <... mprotect resumed>) = 0 [pid 1144] <... close resumed>) = 0 [pid 1143] close(7 [pid 1142] close(7 [pid 306] ioctl(3, LOOP_CLR_FD [pid 1145] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1144] close(6 [pid 1143] <... close resumed>) = 0 [pid 1142] <... close resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 1145] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1144] <... close resumed>) = 0 [pid 1143] close(6 [pid 1142] close(6 [pid 306] close(3 [pid 1145] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1144] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... close resumed>) = 0 [pid 1144] <... futex resumed>) = 1 [pid 1143] <... close resumed>) = 0 [pid 1142] <... close resumed>) = 0 [pid 1140] <... futex resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1145] <... clone3 resumed> => {parent_tid=[1146]}, 88) = 1146 [pid 1144] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1143] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1142] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1140] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1145] rt_sigprocmask(SIG_SETMASK, [], [pid 1144] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1143] <... futex resumed>) = 1 [pid 1142] <... futex resumed>) = 1 [pid 1140] <... futex resumed>) = 0 [pid 1139] <... futex resumed>) = 0 [pid 1138] <... futex resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1147 [pid 1145] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1144] mknod(0x20000000, 000 [pid 1143] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1142] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1140] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1139] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1138] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1145] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1144] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1143] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1142] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1139] <... futex resumed>) = 0 [pid 1138] <... futex resumed>) = 0 [pid 1145] <... futex resumed>) = 0 [pid 1144] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1143] mknod(0x20000000, 000 [pid 1142] mknod(0x20000000, 000 [pid 1139] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1138] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1145] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1144] <... futex resumed>) = 1 [pid 1143] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1142] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1140] <... futex resumed>) = 0 [pid 1144] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1140] exit_group(0 [pid 1144] <... futex resumed>) = ? [pid 1143] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1142] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1140] <... exit_group resumed>) = ? [pid 1144] +++ exited with 0 +++ [pid 1143] <... futex resumed>) = 1 [pid 1142] <... futex resumed>) = 1 [pid 1140] +++ exited with 0 +++ [pid 1139] <... futex resumed>) = 0 [pid 1138] <... futex resumed>) = 0 [pid 1143] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1142] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1139] exit_group(0 [pid 1138] exit_group(0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1140, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1143] <... futex resumed>) = ? [pid 1142] <... futex resumed>) = ? [pid 1139] <... exit_group resumed>) = ? [pid 1138] <... exit_group resumed>) = ? [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1143] +++ exited with 0 +++ [pid 1142] +++ exited with 0 +++ [pid 303] <... restart_syscall resumed>) = 0 [pid 1138] +++ exited with 0 +++ [pid 1139] +++ exited with 0 +++ [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1138, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 303] <... openat resumed>) = 3 [pid 304] <... openat resumed>) = 3 [pid 303] ioctl(3, LOOP_CLR_FD [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1139, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 1146 attached [pid 304] ioctl(3, LOOP_CLR_FD [pid 303] <... ioctl resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 1146] set_robust_list(0x7fe6f87d19a0, 24 [pid 304] <... ioctl resumed>) = 0 [pid 303] close(3 [pid 1146] <... set_robust_list resumed>) = 0 [pid 304] close(3 [pid 303] <... close resumed>) = 0 [pid 1146] rt_sigprocmask(SIG_SETMASK, [], [pid 304] <... close resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1146] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1146] memfd_create("syzkaller", 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1148 [pid 1146] <... memfd_create resumed>) = 3 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1149 [pid 1146] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1146] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 1147 attached ) = 262144 [pid 1146] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 302] ioctl(3, LOOP_CLR_FD) = 0 [pid 302] close(3) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 1150 [pid 1146] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 1146] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1146] ioctl(4, LOOP_CLR_FD) = 0 [pid 1147] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1146] ioctl(4, LOOP_SET_FD, 3 [pid 1147] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1146] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1146] close(4) = 0 [pid 1146] close(3) = 0 [pid 1146] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1145] <... futex resumed>) = 0 [pid 1145] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1145] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1146] <... futex resumed>) = 1 [pid 1146] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 1146] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1145] <... futex resumed>) = 0 [pid 1145] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1145] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1146] <... futex resumed>) = 1 [pid 1146] creat("./bus", 000) = 3 ./strace-static-x86_64: Process 1148 attached [pid 1148] set_robust_list(0x5555636e06a0, 24 [pid 1146] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1145] <... futex resumed>) = 0 [pid 1145] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1145] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1146] <... futex resumed>) = 1 [pid 1146] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1148] <... set_robust_list resumed>) = 0 [pid 1146] <... openat resumed>) = 4 [pid 1148] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1148] setpgid(0, 0) = 0 [pid 1146] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1145] <... futex resumed>) = 0 [pid 1145] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1145] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1148] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1147] <... prctl resumed>) = 0 ./strace-static-x86_64: Process 1149 attached [pid 1146] <... futex resumed>) = 1 [pid 1146] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL) = -1 ENOSPC (No space left on device) [pid 1148] <... openat resumed>) = 3 [pid 1146] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1145] <... futex resumed>) = 0 [pid 1145] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1145] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1146] <... futex resumed>) = 1 [pid 1146] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 1148] write(3, "1000", 4) = 4 [pid 1146] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1148] close(3 [pid 1146] <... futex resumed>) = 1 [pid 1145] <... futex resumed>) = 0 [pid 1148] <... close resumed>) = 0 [pid 1146] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1145] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 1148] write(1, "executing program\n", 18 [pid 1146] <... mmap resumed>) = 0x20000000 [pid 1145] <... futex resumed>) = 0 [pid 1148] <... write resumed>) = 18 [pid 1146] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1145] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1150 attached [pid 1148] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1146] <... futex resumed>) = 0 [pid 1145] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1150] set_robust_list(0x5555636e06a0, 24 [pid 1148] <... futex resumed>) = 0 [pid 1146] memfd_create("syzkaller", 0 [pid 1145] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1150] <... set_robust_list resumed>) = 0 [pid 1148] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1146] <... memfd_create resumed>) = 6 [pid 1145] <... futex resumed>) = 0 [pid 1150] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1149] set_robust_list(0x5555636e06a0, 24 [pid 1148] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1147] setpgid(0, 0 [pid 1146] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1145] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1150] <... prctl resumed>) = 0 [pid 1149] <... set_robust_list resumed>) = 0 [pid 1148] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1146] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1150] setpgid(0, 0 [pid 1148] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1146] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1150] <... setpgid resumed>) = 0 [pid 1149] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1148] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1147] <... setpgid resumed>) = 0 [pid 1150] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1149] <... prctl resumed>) = 0 [pid 1148] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1147] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1150] <... openat resumed>) = 3 [pid 1149] setpgid(0, 0 [pid 1148] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1147] <... openat resumed>) = 3 [pid 1150] write(3, "1000", 4 [pid 1149] <... setpgid resumed>) = 0 [pid 1148] <... mprotect resumed>) = 0 [pid 1147] write(3, "1000", 4 [pid 1146] <... write resumed>) = 131072 [pid 1150] <... write resumed>) = 4 [pid 1149] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1148] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1147] <... write resumed>) = 4 [pid 1150] close(3 [pid 1149] <... openat resumed>) = 3 [pid 1148] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1147] close(3 [pid 1146] munmap(0x7fe6f03b1000, 138412032 [pid 1150] <... close resumed>) = 0 [pid 1149] write(3, "1000", 4 [pid 1148] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1147] <... close resumed>) = 0 [pid 1146] <... munmap resumed>) = 0 executing program executing program executing program [pid 1150] write(1, "executing program\n", 18 [pid 1149] <... write resumed>) = 4 [pid 1147] write(1, "executing program\n", 18 [pid 1146] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1149] close(3 [pid 1147] <... write resumed>) = 18 [pid 1149] <... close resumed>) = 0 [pid 1147] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1149] write(1, "executing program\n", 18 [pid 1147] <... futex resumed>) = 0 [pid 1149] <... write resumed>) = 18 [pid 1147] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1149] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1147] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1149] <... futex resumed>) = 0 [pid 1147] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1149] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1147] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1149] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1147] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1149] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1147] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1149] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1147] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1149] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1147] <... mprotect resumed>) = 0 [pid 1149] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1150] <... write resumed>) = 18 [pid 1149] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1148] <... clone3 resumed> => {parent_tid=[1151]}, 88) = 1151 [pid 1147] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1146] <... openat resumed>) = 7 [pid 1150] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1149] <... mprotect resumed>) = 0 [pid 1148] rt_sigprocmask(SIG_SETMASK, [], [pid 1147] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1146] ioctl(7, LOOP_SET_FD, 6 [pid 1150] <... futex resumed>) = 0 [pid 1149] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1148] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1147] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1146] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1150] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1149] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1148] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1146] ioctl(7, LOOP_CLR_FD [pid 1150] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1148] <... futex resumed>) = 0 [pid 1146] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 1151 attached [pid 1150] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1149] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1148] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1147] <... clone3 resumed> => {parent_tid=[1152]}, 88) = 1152 [pid 1151] set_robust_list(0x7fe6f87d19a0, 24 [pid 1150] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1147] rt_sigprocmask(SIG_SETMASK, [], [pid 1151] <... set_robust_list resumed>) = 0 [pid 1150] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1149] <... clone3 resumed> => {parent_tid=[1153]}, 88) = 1153 [pid 1147] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1151] rt_sigprocmask(SIG_SETMASK, [], [pid 1150] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1149] rt_sigprocmask(SIG_SETMASK, [], [pid 1147] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1151] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1150] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1149] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1147] <... futex resumed>) = 0 [pid 1151] memfd_create("syzkaller", 0 [pid 1150] <... mprotect resumed>) = 0 [pid 1149] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1147] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1151] <... memfd_create resumed>) = 3 [pid 1150] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1149] <... futex resumed>) = 0 [pid 1146] ioctl(7, LOOP_SET_FD, 6 [pid 1151] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1150] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1149] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1146] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1151] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1150] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1146] close(7 [pid 1151] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1146] <... close resumed>) = 0 [pid 1151] <... write resumed>) = 262144 [pid 1150] <... clone3 resumed> => {parent_tid=[1154]}, 88) = 1154 [pid 1146] close(6 [pid 1150] rt_sigprocmask(SIG_SETMASK, [], [pid 1146] <... close resumed>) = 0 [pid 1150] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1146] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1150] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1146] <... futex resumed>) = 1 [pid 1145] <... futex resumed>) = 0 [pid 1150] <... futex resumed>) = 0 [pid 1146] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1145] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1150] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1146] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1145] <... futex resumed>) = 0 [pid 1146] mknod(0x20000000, 000 [pid 1145] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1146] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1151] munmap(0x7fe6f03b1000, 138412032 [pid 1146] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1151] <... munmap resumed>) = 0 [pid 1146] <... futex resumed>) = 1 [pid 1145] <... futex resumed>) = 0 [pid 1151] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1146] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1145] exit_group(0 [pid 1151] <... openat resumed>) = 4 [pid 1146] <... futex resumed>) = ? [pid 1145] <... exit_group resumed>) = ? [pid 1151] ioctl(4, LOOP_SET_FD, 3 [pid 1146] +++ exited with 0 +++ [pid 1145] +++ exited with 0 +++ ./strace-static-x86_64: Process 1153 attached ./strace-static-x86_64: Process 1152 attached [pid 1151] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1145, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1153] set_robust_list(0x7fe6f87d19a0, 24 [pid 1152] set_robust_list(0x7fe6f87d19a0, 24 [pid 1151] ioctl(4, LOOP_CLR_FD [pid 305] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 1154 attached [pid 1153] <... set_robust_list resumed>) = 0 [pid 1152] <... set_robust_list resumed>) = 0 [pid 1151] <... ioctl resumed>) = 0 [pid 1153] rt_sigprocmask(SIG_SETMASK, [], [pid 1152] rt_sigprocmask(SIG_SETMASK, [], [pid 1153] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 305] ioctl(3, LOOP_CLR_FD [pid 1151] ioctl(4, LOOP_SET_FD, 3 [pid 305] <... ioctl resumed>) = 0 [pid 1151] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] close(3 [pid 1151] close(4 [pid 305] <... close resumed>) = 0 [pid 1153] memfd_create("syzkaller", 0 [pid 1152] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1151] <... close resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1153] <... memfd_create resumed>) = 3 [pid 1152] memfd_create("syzkaller", 0 [pid 1151] close(3 [pid 1153] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1152] <... memfd_create resumed>) = 3 [pid 1151] <... close resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1155 [pid 1151] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1148] <... futex resumed>) = 0 [pid 1151] chdir("./file0" [pid 1148] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1151] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1148] <... futex resumed>) = 0 [pid 1151] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1148] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1151] <... futex resumed>) = 0 [pid 1148] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1151] creat("./bus", 000 [pid 1148] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1151] <... creat resumed>) = 3 [pid 1148] <... futex resumed>) = 0 [pid 1151] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1148] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1151] <... futex resumed>) = 0 [pid 1148] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1151] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1148] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1151] <... openat resumed>) = 4 [pid 1148] <... futex resumed>) = 0 [pid 1151] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1148] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1153] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1152] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1151] <... futex resumed>) = 0 [pid 1148] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1151] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1148] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1148] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1155 attached [pid 1155] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1155] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1154] set_robust_list(0x7fe6f87d19a0, 24 [pid 1153] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1152] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1155] setpgid(0, 0) = 0 [pid 1155] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1155] write(3, "1000", 4) = 4 [pid 1155] close(3 [pid 1152] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144executing program [pid 1155] <... close resumed>) = 0 [pid 1155] write(1, "executing program\n", 18 [pid 1153] <... write resumed>) = 262144 [pid 1155] <... write resumed>) = 18 [pid 1155] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1155] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1155] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1153] munmap(0x7fe6f03b1000, 138412032 [pid 1152] <... write resumed>) = 262144 [pid 1154] <... set_robust_list resumed>) = 0 [pid 1155] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1155] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1155] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1155] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1155] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[1156]}, 88) = 1156 [pid 1155] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1155] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1155] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1156 attached [pid 1156] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1152] munmap(0x7fe6f03b1000, 138412032 [pid 1153] <... munmap resumed>) = 0 [pid 1154] rt_sigprocmask(SIG_SETMASK, [], [pid 1153] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1152] <... munmap resumed>) = 0 [pid 1151] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1151] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1148] <... futex resumed>) = 0 [pid 1151] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1148] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1151] <... open resumed>) = 5 [pid 1148] <... futex resumed>) = 0 [pid 1151] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1148] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1151] <... futex resumed>) = 0 [pid 1148] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1151] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1148] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1151] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1148] <... futex resumed>) = 0 [pid 1151] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1148] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1151] <... mmap resumed>) = 0x20000000 [pid 1151] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1148] <... futex resumed>) = 0 [pid 1151] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1148] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1151] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1148] <... futex resumed>) = 0 [pid 1151] memfd_create("syzkaller", 0 [pid 1148] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1151] <... memfd_create resumed>) = 6 [pid 1151] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1154] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1153] <... openat resumed>) = 4 [pid 1152] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1151] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1154] memfd_create("syzkaller", 0 [pid 1153] ioctl(4, LOOP_SET_FD, 3 [pid 1152] <... openat resumed>) = 4 [pid 1151] <... write resumed>) = 131072 [pid 1154] <... memfd_create resumed>) = 3 [pid 1153] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1152] ioctl(4, LOOP_SET_FD, 3 [pid 1151] munmap(0x7fe6f03b1000, 138412032 [pid 1154] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1153] ioctl(4, LOOP_CLR_FD [pid 1152] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1151] <... munmap resumed>) = 0 [pid 1154] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1153] <... ioctl resumed>) = 0 [pid 1152] ioctl(4, LOOP_CLR_FD [pid 1151] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 7 [pid 1151] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1151] ioctl(7, LOOP_CLR_FD) = 0 [pid 1156] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1156] memfd_create("syzkaller", 0 [pid 1154] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1152] <... ioctl resumed>) = 0 [pid 1156] <... memfd_create resumed>) = 3 [pid 1156] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1151] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1154] <... write resumed>) = 262144 [pid 1151] close(7) = 0 [pid 1153] ioctl(4, LOOP_SET_FD, 3 [pid 1151] close(6 [pid 1153] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1151] <... close resumed>) = 0 [pid 1154] munmap(0x7fe6f03b1000, 138412032 [pid 1153] close(4 [pid 1152] ioctl(4, LOOP_SET_FD, 3 [pid 1151] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1153] <... close resumed>) = 0 [pid 1152] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1154] <... munmap resumed>) = 0 [pid 1153] close(3 [pid 1152] close(4 [pid 1151] <... futex resumed>) = 1 [pid 1148] <... futex resumed>) = 0 [pid 1151] mknod(0x20000000, 000 [pid 1148] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1151] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1153] <... close resumed>) = 0 [pid 1148] <... futex resumed>) = 0 [pid 1154] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1153] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1152] <... close resumed>) = 0 [pid 1151] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1148] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1154] <... openat resumed>) = 4 [pid 1153] <... futex resumed>) = 1 [pid 1152] close(3 [pid 1151] <... futex resumed>) = 0 [pid 1149] <... futex resumed>) = 0 [pid 1148] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1154] ioctl(4, LOOP_SET_FD, 3 [pid 1153] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1151] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1149] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1148] exit_group(0 [pid 1154] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1153] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1152] <... close resumed>) = 0 [pid 1151] <... futex resumed>) = ? [pid 1149] <... futex resumed>) = 0 [pid 1148] <... exit_group resumed>) = ? [pid 1154] ioctl(4, LOOP_CLR_FD [pid 1153] chdir("./file0" [pid 1152] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1151] +++ exited with 0 +++ [pid 1149] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1148] +++ exited with 0 +++ [pid 1154] <... ioctl resumed>) = 0 [pid 1153] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1152] <... futex resumed>) = 1 [pid 1147] <... futex resumed>) = 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1148, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1153] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1152] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1147] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1153] <... futex resumed>) = 1 [pid 1152] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1149] <... futex resumed>) = 0 [pid 1147] <... futex resumed>) = 0 [pid 1153] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1152] chdir("./file0" [pid 1149] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1147] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1153] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1152] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1149] <... futex resumed>) = 0 [pid 1153] creat("./bus", 000 [pid 1152] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1149] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1156] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1153] <... creat resumed>) = 3 [pid 1152] <... futex resumed>) = 1 [pid 1147] <... futex resumed>) = 0 [pid 1154] ioctl(4, LOOP_SET_FD, 3 [pid 1153] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1152] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1147] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1154] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1153] <... futex resumed>) = 1 [pid 1152] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1149] <... futex resumed>) = 0 [pid 1147] <... futex resumed>) = 0 [pid 1154] close(4 [pid 1153] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1152] creat("./bus", 000 [pid 1149] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1147] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1154] <... close resumed>) = 0 [pid 1153] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1149] <... futex resumed>) = 0 [pid 1154] close(3 [pid 1153] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1152] <... creat resumed>) = 3 [pid 1149] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1156] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1154] <... close resumed>) = 0 [pid 1153] <... openat resumed>) = 4 [pid 1152] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1154] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1153] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1152] <... futex resumed>) = 1 [pid 1147] <... futex resumed>) = 0 [pid 1154] <... futex resumed>) = 1 [pid 1153] <... futex resumed>) = 1 [pid 1152] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1150] <... futex resumed>) = 0 [pid 1149] <... futex resumed>) = 0 [pid 1147] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1154] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1153] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1152] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1150] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1149] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1147] <... futex resumed>) = 0 [pid 1154] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1153] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1152] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1150] <... futex resumed>) = 0 [pid 1149] <... futex resumed>) = 0 [pid 1147] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1154] chdir("./file0" [pid 1153] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1152] <... openat resumed>) = 4 [pid 1150] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1149] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1154] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1153] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1152] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... restart_syscall resumed>) = 0 [pid 1154] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1153] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1152] <... futex resumed>) = 1 [pid 1147] <... futex resumed>) = 0 [pid 1149] <... futex resumed>) = 0 [pid 1147] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1156] <... write resumed>) = 262144 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1154] <... futex resumed>) = 1 [pid 1153] <... futex resumed>) = 1 [pid 1152] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1150] <... futex resumed>) = 0 [pid 1149] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1147] <... futex resumed>) = 0 [pid 303] <... openat resumed>) = 3 [pid 1156] munmap(0x7fe6f03b1000, 138412032 [pid 1154] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1153] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1152] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1150] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1149] <... futex resumed>) = 0 [pid 1147] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] ioctl(3, LOOP_CLR_FD [pid 1156] <... munmap resumed>) = 0 [pid 1154] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1153] <... open resumed>) = 5 [pid 1152] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1150] <... futex resumed>) = 0 [pid 1149] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1147] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 303] <... ioctl resumed>) = 0 [pid 1156] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1154] creat("./bus", 000 [pid 1153] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1152] <... futex resumed>) = 0 [pid 1150] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1149] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1147] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] close(3 [pid 1156] <... openat resumed>) = 4 [pid 1154] <... creat resumed>) = 3 [pid 1153] <... futex resumed>) = 0 [pid 1152] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1149] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1147] <... futex resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 1156] ioctl(4, LOOP_SET_FD, 3 [pid 1154] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1153] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1152] <... open resumed>) = 5 [pid 1149] <... futex resumed>) = 0 [pid 1147] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1156] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1154] <... futex resumed>) = 1 [pid 1153] <... mmap resumed>) = 0x20000000 [pid 1152] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1150] <... futex resumed>) = 0 [pid 1149] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1156] ioctl(4, LOOP_CLR_FD [pid 1154] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1153] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1152] <... futex resumed>) = 1 [pid 1150] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1149] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1147] <... futex resumed>) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1157 [pid 1156] <... ioctl resumed>) = 0 [pid 1154] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1153] <... futex resumed>) = 0 [pid 1152] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1150] <... futex resumed>) = 0 [pid 1149] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1147] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1154] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1153] memfd_create("syzkaller", 0 [pid 1152] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1150] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1149] <... futex resumed>) = 0 [pid 1147] <... futex resumed>) = 0 [pid 1154] <... openat resumed>) = 4 [pid 1153] <... memfd_create resumed>) = 6 [pid 1152] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1149] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1147] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1154] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1153] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1154] <... futex resumed>) = 1 [pid 1153] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1152] <... mmap resumed>) = 0x20000000 [pid 1150] <... futex resumed>) = 0 [pid 1154] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1150] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1150] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1156] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1156] close(4) = 0 [pid 1154] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1153] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1152] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1156] close(3 [pid 1154] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1156] <... close resumed>) = 0 [pid 1153] <... write resumed>) = 131072 [pid 1152] <... futex resumed>) = 1 [pid 1147] <... futex resumed>) = 0 [pid 1156] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1154] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1153] munmap(0x7fe6f03b1000, 138412032 [pid 1152] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1147] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1156] <... futex resumed>) = 1 [pid 1155] <... futex resumed>) = 0 [pid 1154] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1156] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1155] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1153] <... munmap resumed>) = 0 [pid 1152] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1154] <... futex resumed>) = 1 [pid 1150] <... futex resumed>) = 0 [pid 1147] <... futex resumed>) = 0 [pid 1156] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1155] <... futex resumed>) = 0 [pid 1154] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1153] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1152] memfd_create("syzkaller", 0 [pid 1150] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1147] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1156] chdir("./file0" [pid 1155] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1154] <... open resumed>) = 5 [pid 1153] <... openat resumed>) = 7 [pid 1152] <... memfd_create resumed>) = 6 [pid 1150] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1157 attached [pid 1156] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1154] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1153] ioctl(7, LOOP_SET_FD, 6 [pid 1152] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1150] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1157] set_robust_list(0x5555636e06a0, 24 [pid 1156] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1154] <... futex resumed>) = 0 [pid 1153] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1152] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1150] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1157] <... set_robust_list resumed>) = 0 [pid 1156] <... futex resumed>) = 1 [pid 1155] <... futex resumed>) = 0 [pid 1154] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1153] ioctl(7, LOOP_CLR_FD [pid 1150] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1157] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1156] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1155] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1150] <... futex resumed>) = 0 [pid 1157] <... prctl resumed>) = 0 [pid 1156] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1155] <... futex resumed>) = 0 [pid 1154] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1153] <... ioctl resumed>) = 0 [pid 1152] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1150] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1157] setpgid(0, 0 [pid 1156] creat("./bus", 000 [pid 1155] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1154] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1157] <... setpgid resumed>) = 0 [pid 1156] <... creat resumed>) = 3 [pid 1154] <... mmap resumed>) = 0x20000000 [pid 1152] <... write resumed>) = 131072 [pid 1157] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1156] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1154] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1152] munmap(0x7fe6f03b1000, 138412032 [pid 1157] <... openat resumed>) = 3 [pid 1156] <... futex resumed>) = 1 [pid 1155] <... futex resumed>) = 0 [pid 1154] <... futex resumed>) = 1 [pid 1150] <... futex resumed>) = 0 [pid 1157] write(3, "1000", 4 [pid 1156] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1155] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1154] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1152] <... munmap resumed>) = 0 [pid 1150] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1157] <... write resumed>) = 4 [pid 1156] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1155] <... futex resumed>) = 0 [pid 1154] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1153] ioctl(7, LOOP_SET_FD, 6 [pid 1152] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1150] <... futex resumed>) = 0 [pid 1157] close(3 [pid 1156] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1155] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1154] memfd_create("syzkaller", 0 [pid 1153] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1152] <... openat resumed>) = 7 [pid 1150] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1157] <... close resumed>) = 0 [pid 1156] <... openat resumed>) = 4 [pid 1154] <... memfd_create resumed>) = 6 [pid 1153] close(7 [pid 1152] ioctl(7, LOOP_SET_FD, 6executing program [pid 1157] write(1, "executing program\n", 18 [pid 1156] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1154] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1153] <... close resumed>) = 0 [pid 1152] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1157] <... write resumed>) = 18 [pid 1156] <... futex resumed>) = 1 [pid 1155] <... futex resumed>) = 0 [pid 1154] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1153] close(6 [pid 1152] ioctl(7, LOOP_CLR_FD [pid 1157] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1156] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1155] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1157] <... futex resumed>) = 0 [pid 1156] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1155] <... futex resumed>) = 0 [pid 1157] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1156] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1155] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1157] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1154] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1157] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1157] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1153] <... close resumed>) = 0 [pid 1152] <... ioctl resumed>) = 0 [pid 1157] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1153] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1157] <... mprotect resumed>) = 0 [pid 1154] <... write resumed>) = 131072 [pid 1157] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1153] <... futex resumed>) = 1 [pid 1149] <... futex resumed>) = 0 [pid 1157] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1154] munmap(0x7fe6f03b1000, 138412032 [pid 1153] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1149] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1157] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1153] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1149] <... futex resumed>) = 0 [pid 1154] <... munmap resumed>) = 0 [pid 1153] mknod(0x20000000, 000 [pid 1149] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1157] <... clone3 resumed> => {parent_tid=[1158]}, 88) = 1158 [pid 1154] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1153] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1157] rt_sigprocmask(SIG_SETMASK, [], [pid 1153] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1157] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1154] <... openat resumed>) = 7 [pid 1153] <... futex resumed>) = 1 [pid 1157] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1154] ioctl(7, LOOP_SET_FD, 6 [pid 1153] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1152] ioctl(7, LOOP_SET_FD, 6 [pid 1149] <... futex resumed>) = 0 [pid 1157] <... futex resumed>) = 0 [pid 1156] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1154] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1152] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1149] exit_group(0 [pid 1157] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1156] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1154] ioctl(7, LOOP_CLR_FD [pid 1153] <... futex resumed>) = ? [pid 1152] close(7 [pid 1149] <... exit_group resumed>) = ? [pid 1156] <... futex resumed>) = 1 [pid 1155] <... futex resumed>) = 0 [pid 1154] <... ioctl resumed>) = 0 [pid 1153] +++ exited with 0 +++ [pid 1156] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1155] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1152] <... close resumed>) = 0 [pid 1149] +++ exited with 0 +++ [pid 1156] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1155] <... futex resumed>) = 0 [pid 1152] close(6 [pid 1156] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1155] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1149, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1156] <... open resumed>) = 5 [pid 1152] <... close resumed>) = 0 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 1156] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1152] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1156] <... futex resumed>) = 1 [pid 1155] <... futex resumed>) = 0 [pid 1156] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1155] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1152] <... futex resumed>) = 1 [pid 1147] <... futex resumed>) = 0 [pid 1156] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1155] <... futex resumed>) = 0 [pid 1152] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1147] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1156] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1155] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1154] ioctl(7, LOOP_SET_FD, 6 [pid 1152] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1147] <... futex resumed>) = 0 [pid 1156] <... mmap resumed>) = 0x20000000 [pid 1154] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1152] mknod(0x20000000, 000 [pid 1147] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1156] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1154] close(7 [pid 1152] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1156] <... futex resumed>) = 1 [pid 1155] <... futex resumed>) = 0 [pid 1154] <... close resumed>) = 0 [pid 1152] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1156] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1155] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1154] close(6 [pid 1152] <... futex resumed>) = 1 [pid 1147] <... futex resumed>) = 0 [pid 1156] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1155] <... futex resumed>) = 0 [pid 1156] memfd_create("syzkaller", 0 [pid 1155] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1154] <... close resumed>) = 0 [pid 1156] <... memfd_create resumed>) = 6 [pid 1152] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1154] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1147] exit_group(0 [pid 1156] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1154] <... futex resumed>) = 1 [pid 1150] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1158 attached [pid 1156] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1154] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1152] <... futex resumed>) = ? [pid 1150] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1147] <... exit_group resumed>) = ? [pid 1158] set_robust_list(0x7fe6f87d19a0, 24 [pid 1156] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1154] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1152] +++ exited with 0 +++ [pid 1150] <... futex resumed>) = 0 [pid 1158] <... set_robust_list resumed>) = 0 [pid 1156] <... write resumed>) = 131072 [pid 1154] mknod(0x20000000, 000 [pid 1150] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1147] +++ exited with 0 +++ [pid 1158] rt_sigprocmask(SIG_SETMASK, [], [pid 1156] munmap(0x7fe6f03b1000, 138412032 [pid 1154] <... mknod resumed>) = -1 EEXIST (File exists) [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1147, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1158] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1156] <... munmap resumed>) = 0 [pid 1154] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 1158] memfd_create("syzkaller", 0 [pid 1156] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1154] <... futex resumed>) = 1 [pid 1150] <... futex resumed>) = 0 [pid 1158] <... memfd_create resumed>) = 3 [pid 1156] <... openat resumed>) = 7 [pid 1154] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1158] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1156] ioctl(7, LOOP_SET_FD, 6 [pid 1150] exit_group(0 [pid 1158] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1156] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] <... restart_syscall resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 1150] <... exit_group resumed>) = ? [pid 1158] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1156] ioctl(7, LOOP_CLR_FD [pid 1154] <... futex resumed>) = ? [pid 1156] <... ioctl resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1154] +++ exited with 0 +++ [pid 1150] +++ exited with 0 +++ [pid 306] <... openat resumed>) = 3 [pid 304] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 304] ioctl(3, LOOP_CLR_FD [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1150, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1156] ioctl(7, LOOP_SET_FD, 6 [pid 306] <... ioctl resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 1156] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] close(3 [pid 304] close(3 [pid 1156] close(7 [pid 306] <... close resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 1156] <... close resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1156] close(6 [pid 302] <... restart_syscall resumed>) = 0 [pid 1156] <... close resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1159 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1160 [pid 1158] <... write resumed>) = 262144 [pid 1156] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1158] munmap(0x7fe6f03b1000, 138412032 [pid 1156] <... futex resumed>) = 1 [pid 1155] <... futex resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1158] <... munmap resumed>) = 0 [pid 1156] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1155] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... openat resumed>) = 3 [pid 1158] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1156] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1155] <... futex resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 1158] <... openat resumed>) = 4 [pid 1156] mknod(0x20000000, 000 [pid 1155] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] <... ioctl resumed>) = 0 [pid 1158] ioctl(4, LOOP_SET_FD, 3 [pid 1156] <... mknod resumed>) = -1 EEXIST (File exists) [pid 302] close(3 [pid 1158] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1156] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... close resumed>) = 0 [pid 1158] ioctl(4, LOOP_CLR_FD [pid 1156] <... futex resumed>) = 1 [pid 1155] <... futex resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1158] <... ioctl resumed>) = 0 [pid 1156] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1155] exit_group(0 [pid 1156] <... futex resumed>) = ? [pid 1155] <... exit_group resumed>) = ? [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1161 [pid 1156] +++ exited with 0 +++ [pid 1155] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1155, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1158] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1158] close(4) = 0 [pid 1158] close(3) = 0 [pid 1158] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1157] <... futex resumed>) = 0 [pid 1158] chdir("./file0" [pid 1157] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1158] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1157] <... futex resumed>) = 0 [pid 1158] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1157] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1158] <... futex resumed>) = 0 [pid 1157] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1158] creat("./bus", 000 [pid 1157] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1158] <... creat resumed>) = 3 [pid 1157] <... futex resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 1158] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1157] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1158] <... futex resumed>) = 0 [pid 1157] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1158] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1157] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1158] <... openat resumed>) = 4 [pid 1157] <... futex resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 1158] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1157] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] ioctl(3, LOOP_CLR_FD [pid 1158] <... futex resumed>) = 0 [pid 1157] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 305] <... ioctl resumed>) = 0 [pid 1158] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1157] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] close(3 [pid 1158] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1157] <... futex resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 1158] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1157] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1158] <... futex resumed>) = 0 [pid 1157] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1158] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1157] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1162 [pid 1158] <... open resumed>) = 5 [pid 1157] <... futex resumed>) = 0 [pid 1158] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1157] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1158] <... futex resumed>) = 0 [pid 1157] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1158] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1157] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1158] <... mmap resumed>) = 0x20000000 [pid 1157] <... futex resumed>) = 0 [pid 1158] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1157] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1158] <... futex resumed>) = 0 [pid 1157] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1158] memfd_create("syzkaller", 0 [pid 1157] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1158] <... memfd_create resumed>) = 6 [pid 1157] <... futex resumed>) = 0 [pid 1158] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1157] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1158] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1158] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 1158] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1158] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 7 [pid 1158] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1158] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1161 attached [pid 1161] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1161] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1161] setpgid(0, 0) = 0 [pid 1161] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 ./strace-static-x86_64: Process 1159 attached ./strace-static-x86_64: Process 1160 attached [pid 1158] ioctl(7, LOOP_SET_FD, 6 [pid 1159] set_robust_list(0x5555636e06a0, 24 [pid 1160] set_robust_list(0x5555636e06a0, 24 [pid 1159] <... set_robust_list resumed>) = 0 [pid 1160] <... set_robust_list resumed>) = 0 [pid 1161] write(3, "1000", 4 [pid 1160] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1159] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1158] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1160] <... prctl resumed>) = 0 [pid 1159] <... prctl resumed>) = 0 [pid 1161] <... write resumed>) = 4 [pid 1160] setpgid(0, 0 [pid 1159] setpgid(0, 0 [pid 1158] close(7 [pid 1160] <... setpgid resumed>) = 0 [pid 1159] <... setpgid resumed>) = 0 [pid 1161] close(3 [pid 1160] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1158] <... close resumed>) = 0 [pid 1159] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1161] <... close resumed>) = 0 [pid 1160] <... openat resumed>) = 3 [pid 1158] close(6executing program executing program executing program [pid 1161] write(1, "executing program\n", 18 [pid 1160] write(3, "1000", 4 [pid 1159] <... openat resumed>) = 3 [pid 1158] <... close resumed>) = 0 [pid 1160] <... write resumed>) = 4 [pid 1159] write(3, "1000", 4 [pid 1160] close(3 [pid 1159] <... write resumed>) = 4 [pid 1160] <... close resumed>) = 0 [pid 1159] close(3 [pid 1160] write(1, "executing program\n", 18 [pid 1159] <... close resumed>) = 0 [pid 1160] <... write resumed>) = 18 [pid 1159] write(1, "executing program\n", 18 [pid 1160] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1159] <... write resumed>) = 18 [pid 1160] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1162 attached [pid 1161] <... write resumed>) = 18 [pid 1160] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1159] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1158] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1162] set_robust_list(0x5555636e06a0, 24 [pid 1160] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1159] <... futex resumed>) = 0 [pid 1162] <... set_robust_list resumed>) = 0 [pid 1161] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1160] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1159] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1158] <... futex resumed>) = 1 [pid 1157] <... futex resumed>) = 0 [pid 1162] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1161] <... futex resumed>) = 0 [pid 1160] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1159] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1158] mknod(0x20000000, 000 [pid 1157] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1162] <... prctl resumed>) = 0 [pid 1161] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1158] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1157] <... futex resumed>) = 0 [pid 1162] setpgid(0, 0 [pid 1161] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1160] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1158] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1157] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1162] <... setpgid resumed>) = 0 [pid 1161] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1158] <... futex resumed>) = 0 [pid 1157] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1162] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1161] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1158] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1157] exit_group(0 [pid 1162] <... openat resumed>) = 3 [pid 1161] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1158] <... futex resumed>) = ? [pid 1157] <... exit_group resumed>) = ? [pid 1162] write(3, "1000", 4 [pid 1161] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1160] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1159] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1158] +++ exited with 0 +++ [pid 1157] +++ exited with 0 +++ [pid 1162] <... write resumed>) = 4 [pid 1161] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1157, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1162] close(3 [pid 1161] <... mprotect resumed>) = 0 [pid 1160] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1159] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1162] <... close resumed>) = 0 [pid 1161] rt_sigprocmask(SIG_BLOCK, ~[], executing program [pid 1162] write(1, "executing program\n", 18 [pid 1161] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1162] <... write resumed>) = 18 [pid 1161] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1162] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1161] <... clone3 resumed> => {parent_tid=[1163]}, 88) = 1163 [pid 1162] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1161] rt_sigprocmask(SIG_SETMASK, [], [pid 1162] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1161] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1160] <... mprotect resumed>) = 0 [pid 1159] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1162] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1161] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1162] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1161] <... futex resumed>) = 0 [pid 1160] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1159] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1162] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1161] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1160] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1159] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1162] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1160] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1162] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1159] <... mprotect resumed>) = 0 [pid 1162] <... mprotect resumed>) = 0 [pid 1162] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1159] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1160] <... clone3 resumed> => {parent_tid=[1164]}, 88) = 1164 [pid 1162] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1160] rt_sigprocmask(SIG_SETMASK, [], [pid 1159] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1162] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1160] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1159] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1160] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1162] <... clone3 resumed> => {parent_tid=[1165]}, 88) = 1165 [pid 1162] rt_sigprocmask(SIG_SETMASK, [], [pid 1160] <... futex resumed>) = 0 [pid 1159] <... clone3 resumed> => {parent_tid=[1166]}, 88) = 1166 [pid 1162] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1160] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1159] rt_sigprocmask(SIG_SETMASK, [], [pid 1162] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1159] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1162] <... futex resumed>) = 0 [pid 1162] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1159] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 1159] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 303] ioctl(3, LOOP_CLR_FD) = 0 [pid 303] close(3) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 1167 ./strace-static-x86_64: Process 1163 attached [pid 1163] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1163] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1163] memfd_create("syzkaller", 0) = 3 [pid 1163] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 ./strace-static-x86_64: Process 1165 attached [pid 1165] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1165] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1165] memfd_create("syzkaller", 0) = 3 [pid 1163] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1165] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1165] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 1167 attached [pid 1167] set_robust_list(0x5555636e06a0, 24 [pid 1163] <... write resumed>) = 262144 [pid 1167] <... set_robust_list resumed>) = 0 [pid 1167] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1167] setpgid(0, 0) = 0 [pid 1167] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1167] write(3, "1000", 4) = 4 executing program [pid 1167] close(3) = 0 [pid 1167] write(1, "executing program\n", 18) = 18 [pid 1167] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1167] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1167] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1167] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1167] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1167] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1163] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1167] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1167] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0}./strace-static-x86_64: Process 1166 attached ./strace-static-x86_64: Process 1164 attached [pid 1166] set_robust_list(0x7fe6f87d19a0, 24 [pid 1164] set_robust_list(0x7fe6f87d19a0, 24 [pid 1163] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 1163] ioctl(4, LOOP_SET_FD, 3 [pid 1167] <... clone3 resumed> => {parent_tid=[1168]}, 88) = 1168 [pid 1163] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1167] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1163] ioctl(4, LOOP_CLR_FD [pid 1167] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1163] <... ioctl resumed>) = 0 [pid 1167] <... futex resumed>) = 0 [pid 1166] <... set_robust_list resumed>) = 0 [pid 1164] <... set_robust_list resumed>) = 0 [pid 1167] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1166] rt_sigprocmask(SIG_SETMASK, [], [pid 1164] rt_sigprocmask(SIG_SETMASK, [], [pid 1165] <... write resumed>) = 262144 [pid 1165] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1163] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1163] close(4) = 0 [pid 1163] close(3) = 0 [pid 1163] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1161] <... futex resumed>) = 0 [pid 1163] <... futex resumed>) = 1 [pid 1161] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1163] chdir("./file0" [pid 1161] <... futex resumed>) = 0 [pid 1163] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1161] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1163] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1161] <... futex resumed>) = 0 [pid 1163] creat("./bus", 000 [pid 1161] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1165] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1163] <... creat resumed>) = 3 [pid 1161] <... futex resumed>) = 0 [pid 1166] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1165] <... openat resumed>) = 4 [pid 1164] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1163] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1161] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1165] ioctl(4, LOOP_SET_FD, 3 [pid 1164] memfd_create("syzkaller", 0 [pid 1163] <... futex resumed>) = 0 [pid 1161] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1166] memfd_create("syzkaller", 0 [pid 1165] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1163] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1161] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1165] ioctl(4, LOOP_CLR_FD [pid 1163] <... openat resumed>) = 4 [pid 1161] <... futex resumed>) = 0 [pid 1165] <... ioctl resumed>) = 0 [pid 1163] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1161] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1163] <... futex resumed>) = 0 [pid 1161] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1163] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1161] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1163] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1161] <... futex resumed>) = 0 [pid 1163] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1161] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1163] <... futex resumed>) = 0 [pid 1161] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1163] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1161] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1163] <... open resumed>) = 5 [pid 1161] <... futex resumed>) = 0 [pid 1165] ioctl(4, LOOP_SET_FD, 3 [pid 1163] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1161] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1165] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1163] <... futex resumed>) = 0 [pid 1161] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1165] close(4 [pid 1163] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1161] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1166] <... memfd_create resumed>) = 3 [pid 1165] <... close resumed>) = 0 [pid 1164] <... memfd_create resumed>) = 3 [pid 1163] <... mmap resumed>) = 0x20000000 [pid 1161] <... futex resumed>) = 0 [pid 1165] close(3 [pid 1163] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1161] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1166] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1165] <... close resumed>) = 0 [pid 1164] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1163] <... futex resumed>) = 0 [pid 1161] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1166] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1165] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1164] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1163] memfd_create("syzkaller", 0 [pid 1161] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1165] <... futex resumed>) = 1 [pid 1163] <... memfd_create resumed>) = 6 [pid 1162] <... futex resumed>) = 0 [pid 1161] <... futex resumed>) = 0 [pid 1165] chdir("./file0" [pid 1163] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1162] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1161] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1165] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1163] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1162] <... futex resumed>) = 0 [pid 1166] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1165] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1163] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1162] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1165] <... futex resumed>) = 0 [pid 1164] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1163] <... write resumed>) = 131072 [pid 1162] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1166] <... write resumed>) = 262144 [pid 1165] creat("./bus", 000 [pid 1163] munmap(0x7fe6f03b1000, 138412032 [pid 1162] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1165] <... creat resumed>) = 3 [pid 1163] <... munmap resumed>) = 0 [pid 1162] <... futex resumed>) = 0 [pid 1165] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1163] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1162] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1166] munmap(0x7fe6f03b1000, 138412032 [pid 1165] <... futex resumed>) = 0 [pid 1164] <... write resumed>) = 262144 [pid 1163] <... openat resumed>) = 7 [pid 1162] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1165] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1163] ioctl(7, LOOP_SET_FD, 6 [pid 1162] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1165] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1163] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1162] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1168 attached [pid 1166] <... munmap resumed>) = 0 [pid 1165] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1164] munmap(0x7fe6f03b1000, 138412032 [pid 1163] ioctl(7, LOOP_CLR_FD [pid 1162] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1165] <... openat resumed>) = 4 [pid 1163] <... ioctl resumed>) = 0 [pid 1165] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1168] set_robust_list(0x7fe6f87d19a0, 24 [pid 1166] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1165] <... futex resumed>) = 1 [pid 1164] <... munmap resumed>) = 0 [pid 1162] <... futex resumed>) = 0 [pid 1168] <... set_robust_list resumed>) = 0 [pid 1166] <... openat resumed>) = 4 [pid 1165] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1162] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1168] rt_sigprocmask(SIG_SETMASK, [], [pid 1166] ioctl(4, LOOP_SET_FD, 3 [pid 1165] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1164] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1162] <... futex resumed>) = 0 [pid 1168] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1166] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1165] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1164] <... openat resumed>) = 4 [pid 1162] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1165] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1165] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1163] ioctl(7, LOOP_SET_FD, 6 [pid 1165] <... futex resumed>) = 1 [pid 1163] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1162] <... futex resumed>) = 0 [pid 1165] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1163] close(7 [pid 1162] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1165] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1163] <... close resumed>) = 0 [pid 1162] <... futex resumed>) = 0 [pid 1166] ioctl(4, LOOP_CLR_FD [pid 1165] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1164] ioctl(4, LOOP_SET_FD, 3 [pid 1163] close(6 [pid 1162] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1168] memfd_create("syzkaller", 0 [pid 1166] <... ioctl resumed>) = 0 [pid 1165] <... open resumed>) = 5 [pid 1164] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1163] <... close resumed>) = 0 [pid 1165] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1164] ioctl(4, LOOP_CLR_FD [pid 1168] <... memfd_create resumed>) = 3 [pid 1165] <... futex resumed>) = 1 [pid 1163] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1164] <... ioctl resumed>) = 0 [pid 1162] <... futex resumed>) = 0 [pid 1168] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1165] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1163] <... futex resumed>) = 1 [pid 1162] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1161] <... futex resumed>) = 0 [pid 1168] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1165] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1163] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1162] <... futex resumed>) = 0 [pid 1161] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1165] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1163] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1162] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1161] <... futex resumed>) = 0 [pid 1165] <... mmap resumed>) = 0x20000000 [pid 1163] mknod(0x20000000, 000 [pid 1161] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1165] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1163] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1165] <... futex resumed>) = 1 [pid 1163] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1162] <... futex resumed>) = 0 [pid 1165] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1163] <... futex resumed>) = 1 [pid 1162] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1161] <... futex resumed>) = 0 [pid 1168] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1166] ioctl(4, LOOP_SET_FD, 3 [pid 1165] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1163] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1162] <... futex resumed>) = 0 [pid 1161] exit_group(0 [pid 1166] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1165] memfd_create("syzkaller", 0 [pid 1164] ioctl(4, LOOP_SET_FD, 3 [pid 1163] <... futex resumed>) = ? [pid 1162] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1161] <... exit_group resumed>) = ? [pid 1168] <... write resumed>) = 262144 [pid 1166] close(4 [pid 1165] <... memfd_create resumed>) = 6 [pid 1164] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1163] +++ exited with 0 +++ [pid 1161] +++ exited with 0 +++ [pid 1168] munmap(0x7fe6f03b1000, 138412032 [pid 1166] <... close resumed>) = 0 [pid 1165] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1164] close(4 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1161, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1168] <... munmap resumed>) = 0 [pid 1166] close(3 [pid 1165] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1164] <... close resumed>) = 0 [pid 1168] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1166] <... close resumed>) = 0 [pid 1165] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1164] close(3 [pid 1168] <... openat resumed>) = 4 [pid 1166] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1165] <... write resumed>) = 131072 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1168] ioctl(4, LOOP_SET_FD, 3 [pid 1166] <... futex resumed>) = 1 [pid 1165] munmap(0x7fe6f03b1000, 138412032 [pid 1164] <... close resumed>) = 0 [pid 1159] <... futex resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 1168] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1166] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1165] <... munmap resumed>) = 0 [pid 1164] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1159] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] ioctl(3, LOOP_CLR_FD [pid 1168] ioctl(4, LOOP_CLR_FD [pid 1166] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1165] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1164] <... futex resumed>) = 1 [pid 1160] <... futex resumed>) = 0 [pid 1159] <... futex resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 1168] <... ioctl resumed>) = 0 [pid 1166] chdir("./file0" [pid 1165] <... openat resumed>) = 7 [pid 1164] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1160] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1159] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] close(3 [pid 1166] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1165] ioctl(7, LOOP_SET_FD, 6 [pid 1164] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1160] <... futex resumed>) = 0 [pid 302] <... close resumed>) = 0 [pid 1166] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1165] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1164] chdir("./file0" [pid 1160] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1166] <... futex resumed>) = 1 [pid 1165] ioctl(7, LOOP_CLR_FD [pid 1164] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1159] <... futex resumed>) = 0 [pid 1168] ioctl(4, LOOP_SET_FD, 3 [pid 1166] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1165] <... ioctl resumed>) = 0 [pid 1164] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1159] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1169 [pid 1168] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1166] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1164] <... futex resumed>) = 1 [pid 1160] <... futex resumed>) = 0 [pid 1159] <... futex resumed>) = 0 [pid 1168] close(4 [pid 1166] creat("./bus", 000 [pid 1164] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1160] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1159] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1168] <... close resumed>) = 0 [pid 1166] <... creat resumed>) = 3 [pid 1168] close(3 [pid 1166] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1164] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1160] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1169 attached [pid 1168] <... close resumed>) = 0 [pid 1165] ioctl(7, LOOP_SET_FD, 6 [pid 1160] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1168] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1166] <... futex resumed>) = 1 [pid 1165] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1164] creat("./bus", 000 [pid 1159] <... futex resumed>) = 0 [pid 1168] <... futex resumed>) = 1 [pid 1167] <... futex resumed>) = 0 [pid 1166] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1165] close(7 [pid 1168] chdir("./file0" [pid 1167] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1166] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1165] <... close resumed>) = 0 [pid 1164] <... creat resumed>) = 3 [pid 1159] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1168] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1167] <... futex resumed>) = 0 [pid 1166] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1165] close(6 [pid 1164] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1159] <... futex resumed>) = 0 [pid 1168] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1167] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1166] <... openat resumed>) = 4 [pid 1165] <... close resumed>) = 0 [pid 1164] <... futex resumed>) = 1 [pid 1160] <... futex resumed>) = 0 [pid 1159] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1168] <... futex resumed>) = 0 [pid 1167] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1166] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1165] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1164] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1160] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1159] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1168] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1167] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1166] <... futex resumed>) = 0 [pid 1165] <... futex resumed>) = 1 [pid 1164] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1162] <... futex resumed>) = 0 [pid 1160] <... futex resumed>) = 0 [pid 1159] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1168] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1167] <... futex resumed>) = 0 [pid 1166] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1165] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1164] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1162] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1160] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1159] <... futex resumed>) = 0 [pid 1168] creat("./bus", 000 [pid 1167] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1165] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1164] <... openat resumed>) = 4 [pid 1162] <... futex resumed>) = 0 [pid 1159] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1168] <... creat resumed>) = 3 [pid 1166] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1165] mknod(0x20000000, 000 [pid 1164] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1162] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1168] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1166] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1165] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1164] <... futex resumed>) = 1 [pid 1160] <... futex resumed>) = 0 [pid 1169] set_robust_list(0x5555636e06a0, 24 [pid 1168] <... futex resumed>) = 1 [pid 1167] <... futex resumed>) = 0 [pid 1166] <... futex resumed>) = 1 [pid 1165] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1164] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1160] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1159] <... futex resumed>) = 0 [pid 1169] <... set_robust_list resumed>) = 0 [pid 1168] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1167] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1166] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1165] <... futex resumed>) = 1 [pid 1164] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1162] <... futex resumed>) = 0 [pid 1160] <... futex resumed>) = 0 [pid 1159] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1169] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1168] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1167] <... futex resumed>) = 0 [pid 1166] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1165] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1164] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1162] exit_group(0 [pid 1160] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1159] <... futex resumed>) = 0 [pid 1169] <... prctl resumed>) = 0 [pid 1168] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1167] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1166] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1165] <... futex resumed>) = ? [pid 1164] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1162] <... exit_group resumed>) = ? [pid 1159] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1169] setpgid(0, 0 [pid 1168] <... openat resumed>) = 4 [pid 1166] <... open resumed>) = 5 [pid 1165] +++ exited with 0 +++ [pid 1164] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1162] +++ exited with 0 +++ [pid 1169] <... setpgid resumed>) = 0 [pid 1168] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1166] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1164] <... futex resumed>) = 1 [pid 1160] <... futex resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1162, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1169] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1168] <... futex resumed>) = 1 [pid 1167] <... futex resumed>) = 0 [pid 1166] <... futex resumed>) = 1 [pid 1164] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1160] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1159] <... futex resumed>) = 0 [pid 1169] write(3, "1000", 4 [pid 1168] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1167] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1166] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1164] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1160] <... futex resumed>) = 0 [pid 1159] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1169] <... write resumed>) = 4 [pid 1168] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1167] <... futex resumed>) = 0 [pid 1166] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1164] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1160] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1159] <... futex resumed>) = 0 [pid 1169] close(3 [pid 1168] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1167] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}executing program [pid 1166] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1164] <... open resumed>) = 5 [pid 1159] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1169] <... close resumed>) = 0 [pid 1169] write(1, "executing program\n", 18 [pid 1166] <... mmap resumed>) = 0x20000000 [pid 1169] <... write resumed>) = 18 [pid 1164] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1166] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1169] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1164] <... futex resumed>) = 1 [pid 1166] <... futex resumed>) = 1 [pid 1160] <... futex resumed>) = 0 [pid 1159] <... futex resumed>) = 0 [pid 1169] <... futex resumed>) = 0 [pid 1166] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1164] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1160] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1159] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1169] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1166] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1164] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1160] <... futex resumed>) = 0 [pid 1159] <... futex resumed>) = 0 [pid 1169] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1169] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1166] memfd_create("syzkaller", 0 [pid 1164] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1160] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1159] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1169] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1166] <... memfd_create resumed>) = 6 [pid 1169] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1166] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1164] <... mmap resumed>) = 0x20000000 [pid 1169] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1166] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1169] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1164] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1169] <... mprotect resumed>) = 0 [pid 1169] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1169] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1166] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1169] <... clone3 resumed> => {parent_tid=[1170]}, 88) = 1170 [pid 1164] <... futex resumed>) = 1 [pid 1160] <... futex resumed>) = 0 [pid 1169] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1166] <... write resumed>) = 131072 [pid 1164] memfd_create("syzkaller", 0 [pid 1160] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1169] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1166] munmap(0x7fe6f03b1000, 138412032 [pid 1164] <... memfd_create resumed>) = 6 [pid 1160] <... futex resumed>) = 0 [pid 1169] <... futex resumed>) = 0 [pid 1166] <... munmap resumed>) = 0 [pid 1164] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1160] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1169] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1168] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1166] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1164] <... mmap resumed>) = 0x7fe6f03b1000 ./strace-static-x86_64: Process 1170 attached [pid 1170] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1170] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1170] memfd_create("syzkaller", 0) = 3 [pid 1170] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1168] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 305] ioctl(3, LOOP_CLR_FD) = 0 [pid 305] close(3) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1168] <... futex resumed>) = 1 [pid 1167] <... futex resumed>) = 0 [pid 1164] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1171 [pid 1168] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1167] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1166] <... openat resumed>) = 7 [pid 1164] <... write resumed>) = 131072 [pid 1168] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1167] <... futex resumed>) = 0 [pid 1166] ioctl(7, LOOP_SET_FD, 6 [pid 1164] munmap(0x7fe6f03b1000, 138412032 [pid 1168] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1167] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1166] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1168] <... open resumed>) = 5 [pid 1166] ioctl(7, LOOP_CLR_FD [pid 1164] <... munmap resumed>) = 0 [pid 1168] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1166] <... ioctl resumed>) = 0 [pid 1164] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1168] <... futex resumed>) = 1 [pid 1167] <... futex resumed>) = 0 [pid 1168] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1167] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1164] <... openat resumed>) = 7 [pid 1168] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1167] <... futex resumed>) = 0 [pid 1164] ioctl(7, LOOP_SET_FD, 6 [pid 1168] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1167] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1164] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1168] <... mmap resumed>) = 0x20000000 [pid 1164] ioctl(7, LOOP_CLR_FD [pid 1168] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1164] <... ioctl resumed>) = 0 [pid 1168] <... futex resumed>) = 1 [pid 1167] <... futex resumed>) = 0 [pid 1168] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1167] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1168] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1167] <... futex resumed>) = 0 [pid 1168] memfd_create("syzkaller", 0 [pid 1167] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1168] <... memfd_create resumed>) = 6 [pid 1168] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1166] ioctl(7, LOOP_SET_FD, 6 [pid 1170] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 1168] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1166] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1170] munmap(0x7fe6f03b1000, 138412032 [pid 1168] <... write resumed>) = 131072 [pid 1166] close(7 [pid 1168] munmap(0x7fe6f03b1000, 138412032 [pid 1164] ioctl(7, LOOP_SET_FD, 6 [pid 1166] <... close resumed>) = 0 [pid 1168] <... munmap resumed>) = 0 [pid 1166] close(6 [pid 1164] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1168] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1170] <... munmap resumed>) = 0 [pid 1166] <... close resumed>) = 0 [pid 1164] close(7 [pid 1168] <... openat resumed>) = 7 [pid 1166] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1168] ioctl(7, LOOP_SET_FD, 6 [pid 1164] <... close resumed>) = 0 [pid 1166] <... futex resumed>) = 1 [pid 1159] <... futex resumed>) = 0 [pid 1168] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1166] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1164] close(6 [pid 1159] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1168] ioctl(7, LOOP_CLR_FD [pid 1166] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1168] <... ioctl resumed>) = 0 [pid 1166] mknod(0x20000000, 000 [pid 1164] <... close resumed>) = 0 [pid 1159] <... futex resumed>) = 0 [pid 1166] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1164] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1159] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1166] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1164] <... futex resumed>) = 1 [pid 1160] <... futex resumed>) = 0 [pid 1159] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1166] <... futex resumed>) = 0 [pid 1164] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1160] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1166] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1164] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1160] <... futex resumed>) = 0 [pid 1159] exit_group(0 [pid 1164] mknod(0x20000000, 000 [pid 1160] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1166] <... futex resumed>) = ? [pid 1164] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1159] <... exit_group resumed>) = ? [pid 1166] +++ exited with 0 +++ [pid 1164] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1170] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 1170] ioctl(4, LOOP_SET_FD, 3 [pid 1159] +++ exited with 0 +++ [pid 1164] <... futex resumed>) = 1 [pid 1164] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1160] <... futex resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1159, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1168] ioctl(7, LOOP_SET_FD, 6 [pid 1160] exit_group(0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 1168] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1164] <... futex resumed>) = ? [pid 1160] <... exit_group resumed>) = ? [pid 1168] close(7 [pid 1164] +++ exited with 0 +++ [pid 1160] +++ exited with 0 +++ [pid 1168] <... close resumed>) = 0 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1160, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1168] close(6 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 1170] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1168] <... close resumed>) = 0 [pid 1168] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1167] <... futex resumed>) = 0 [pid 1168] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1167] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1168] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1167] <... futex resumed>) = 0 [pid 1168] mknod(0x20000000, 000 [pid 1167] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1168] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1170] ioctl(4, LOOP_CLR_FD [pid 1168] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... restart_syscall resumed>) = 0 [pid 1170] <... ioctl resumed>) = 0 [pid 1168] <... futex resumed>) = 1 [pid 1167] <... futex resumed>) = 0 [pid 1168] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1167] exit_group(0 [pid 1168] <... futex resumed>) = ? [pid 1167] <... exit_group resumed>) = ? [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1168] +++ exited with 0 +++ [pid 306] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 1167] +++ exited with 0 +++ [pid 306] <... ioctl resumed>) = 0 [pid 306] close(3 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1167, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] <... close resumed>) = 0 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1170] ioctl(4, LOOP_SET_FD, 3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1170] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1170] close(4 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1172 [pid 1170] <... close resumed>) = 0 [pid 1170] close(3) = 0 [pid 1170] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1171 attached ) = 1 [pid 1169] <... futex resumed>) = 0 [pid 1171] set_robust_list(0x5555636e06a0, 24 [pid 1170] chdir("./file0" [pid 1169] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1171] <... set_robust_list resumed>) = 0 [pid 1170] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1169] <... futex resumed>) = 0 [pid 1171] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1170] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1169] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1171] <... prctl resumed>) = 0 [pid 1170] <... futex resumed>) = 0 [pid 1169] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1171] setpgid(0, 0 [pid 1170] creat("./bus", 000 [pid 1169] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1171] <... setpgid resumed>) = 0 [pid 1170] <... creat resumed>) = 3 [pid 1169] <... futex resumed>) = 0 [pid 1171] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1170] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1169] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... restart_syscall resumed>) = 0 [pid 1171] <... openat resumed>) = 3 [pid 1170] <... futex resumed>) = 0 [pid 1169] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1171] write(3, "1000", 4 [pid 1170] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1169] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1171] <... write resumed>) = 4 [pid 1170] <... openat resumed>) = 4 [pid 1169] <... futex resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR./strace-static-x86_64: Process 1172 attached [pid 1171] close(3 [pid 1170] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1169] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... openat resumed>) = 3 [pid 1172] set_robust_list(0x5555636e06a0, 24 [pid 1171] <... close resumed>) = 0 [pid 1170] <... futex resumed>) = 0 [pid 1169] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) executing program [pid 304] ioctl(3, LOOP_CLR_FD [pid 1172] <... set_robust_list resumed>) = 0 [pid 1171] write(1, "executing program\n", 18 [pid 1170] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1169] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... ioctl resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 1172] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1171] <... write resumed>) = 18 [pid 1170] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1169] <... futex resumed>) = 0 [pid 304] close(3 [pid 1172] <... prctl resumed>) = 0 [pid 1171] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1170] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1169] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... close resumed>) = 0 [pid 1172] setpgid(0, 0 [pid 1171] <... futex resumed>) = 0 [pid 1170] <... futex resumed>) = 0 [pid 1169] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1172] <... setpgid resumed>) = 0 [pid 1171] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1170] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1169] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... openat resumed>) = 3 [pid 1172] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1171] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1170] <... open resumed>) = 5 [pid 1169] <... futex resumed>) = 0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1173 [pid 303] ioctl(3, LOOP_CLR_FD [pid 1172] <... openat resumed>) = 3 [pid 1171] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1170] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1169] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... ioctl resumed>) = 0 [pid 1172] write(3, "1000", 4 [pid 1171] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1170] <... futex resumed>) = 0 [pid 1169] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 303] close(3 [pid 1171] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1170] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1169] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... close resumed>) = 0 [pid 1171] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1170] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1169] <... futex resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1171] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1170] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1169] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1171] <... mprotect resumed>) = 0 [pid 1170] <... mmap resumed>) = 0x20000000 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1174 [pid 1171] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1170] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1171] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1170] <... futex resumed>) = 1 [pid 1169] <... futex resumed>) = 0 [pid 1171] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1170] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1169] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1170] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1169] <... futex resumed>) = 0 [pid 1172] <... write resumed>) = 4 [pid 1171] <... clone3 resumed> => {parent_tid=[1175]}, 88) = 1175 [pid 1170] memfd_create("syzkaller", 0 [pid 1169] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1172] close(3 [pid 1171] rt_sigprocmask(SIG_SETMASK, [], [pid 1170] <... memfd_create resumed>) = 6 executing program [pid 1172] <... close resumed>) = 0 [pid 1171] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1170] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1172] write(1, "executing program\n", 18 [pid 1171] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1170] <... mmap resumed>) = 0x7fe6f03b1000 ./strace-static-x86_64: Process 1173 attached [pid 1172] <... write resumed>) = 18 [pid 1171] <... futex resumed>) = 0 [pid 1170] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1173] set_robust_list(0x5555636e06a0, 24 [pid 1172] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1171] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1170] <... write resumed>) = 131072 [pid 1173] <... set_robust_list resumed>) = 0 [pid 1172] <... futex resumed>) = 0 [pid 1170] munmap(0x7fe6f03b1000, 138412032 [pid 1173] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1172] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1170] <... munmap resumed>) = 0 [pid 1173] <... prctl resumed>) = 0 [pid 1172] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1170] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 1174 attached [pid 1173] setpgid(0, 0 [pid 1172] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1170] <... openat resumed>) = 7 [pid 1174] set_robust_list(0x5555636e06a0, 24 [pid 1173] <... setpgid resumed>) = 0 [pid 1172] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1170] ioctl(7, LOOP_SET_FD, 6 [pid 1172] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1170] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1174] <... set_robust_list resumed>) = 0 [pid 1173] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1172] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1170] ioctl(7, LOOP_CLR_FD [pid 1174] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1173] <... openat resumed>) = 3 [pid 1172] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1170] <... ioctl resumed>) = 0 [pid 1174] <... prctl resumed>) = 0 [pid 1173] write(3, "1000", 4 [pid 1172] <... mprotect resumed>) = 0 [pid 1174] setpgid(0, 0 [pid 1173] <... write resumed>) = 4 [pid 1172] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1174] <... setpgid resumed>) = 0 [pid 1173] close(3 [pid 1172] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1173] <... close resumed>) = 0 [pid 1172] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0}executing program [pid 1173] write(1, "executing program\n", 18 [pid 1174] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1172] <... clone3 resumed> => {parent_tid=[1176]}, 88) = 1176 [pid 1173] <... write resumed>) = 18 [pid 1172] rt_sigprocmask(SIG_SETMASK, [], [pid 1174] <... openat resumed>) = 3 [pid 1173] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1172] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1174] write(3, "1000", 4 [pid 1173] <... futex resumed>) = 0 [pid 1172] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1173] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1172] <... futex resumed>) = 0 [pid 1174] <... write resumed>) = 4 [pid 1173] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1172] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1174] close(3 [pid 1173] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1170] ioctl(7, LOOP_SET_FD, 6 [pid 1174] <... close resumed>) = 0 [pid 1173] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1170] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) executing program [pid 1174] write(1, "executing program\n", 18 [pid 1173] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1170] close(7 [pid 1174] <... write resumed>) = 18 [pid 1173] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1170] <... close resumed>) = 0 [pid 1174] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1173] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1170] close(6 [pid 1174] <... futex resumed>) = 0 [pid 1173] <... mprotect resumed>) = 0 [pid 1170] <... close resumed>) = 0 ./strace-static-x86_64: Process 1175 attached [pid 1170] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1175] set_robust_list(0x7fe6f87d19a0, 24 [pid 1170] <... futex resumed>) = 1 [pid 1169] <... futex resumed>) = 0 [pid 1175] <... set_robust_list resumed>) = 0 [pid 1170] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1169] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1175] rt_sigprocmask(SIG_SETMASK, [], [pid 1170] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1169] <... futex resumed>) = 0 [pid 1175] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1170] mknod(0x20000000, 000 [pid 1169] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1175] memfd_create("syzkaller", 0 [pid 1170] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1175] <... memfd_create resumed>) = 3 [pid 1170] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1175] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1170] <... futex resumed>) = 1 [pid 1169] <... futex resumed>) = 0 [pid 1175] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1174] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1173] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1170] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1169] exit_group(0 [pid 1175] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1174] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1173] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1170] <... futex resumed>) = ? [pid 1169] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 1176 attached [pid 1174] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1173] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1170] +++ exited with 0 +++ [pid 1169] +++ exited with 0 +++ [pid 1174] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1169, si_uid=0, si_status=0, si_utime=1, si_stime=0} --- [pid 1174] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1173] <... clone3 resumed> => {parent_tid=[1177]}, 88) = 1177 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 1174] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1173] rt_sigprocmask(SIG_SETMASK, [], [pid 1174] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1173] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1174] <... mprotect resumed>) = 0 [pid 1173] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1175] <... write resumed>) = 262144 [pid 1174] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1173] <... futex resumed>) = 0 [pid 1174] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1173] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1174] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1175] munmap(0x7fe6f03b1000, 138412032 [pid 1174] <... clone3 resumed> => {parent_tid=[1178]}, 88) = 1178 [pid 1174] rt_sigprocmask(SIG_SETMASK, [], [pid 1176] set_robust_list(0x7fe6f87d19a0, 24 [pid 1174] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1176] <... set_robust_list resumed>) = 0 [pid 1174] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1176] rt_sigprocmask(SIG_SETMASK, [], [pid 1174] <... futex resumed>) = 0 [pid 1176] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1174] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1176] memfd_create("syzkaller", 0 [pid 1175] <... munmap resumed>) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 1175] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1175] ioctl(4, LOOP_SET_FD, 3 [pid 302] <... openat resumed>) = 3 [pid 1175] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 302] ioctl(3, LOOP_CLR_FD [pid 1175] ioctl(4, LOOP_CLR_FD [pid 302] <... ioctl resumed>) = 0 [pid 1175] <... ioctl resumed>) = 0 [pid 302] close(3) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 1179 ./strace-static-x86_64: Process 1177 attached [pid 1175] ioctl(4, LOOP_SET_FD, 3 [pid 1176] <... memfd_create resumed>) = 3 [pid 1175] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1176] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1177] set_robust_list(0x7fe6f87d19a0, 24 [pid 1176] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1175] close(4 [pid 1177] <... set_robust_list resumed>) = 0 [pid 1175] <... close resumed>) = 0 [pid 1177] rt_sigprocmask(SIG_SETMASK, [], [pid 1175] close(3 [pid 1177] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1175] <... close resumed>) = 0 [pid 1177] memfd_create("syzkaller", 0 [pid 1175] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1177] <... memfd_create resumed>) = 3 [pid 1176] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1175] <... futex resumed>) = 1 [pid 1171] <... futex resumed>) = 0 [pid 1177] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1175] chdir("./file0" [pid 1171] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1177] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1175] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1171] <... futex resumed>) = 0 [pid 1175] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1171] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1175] <... futex resumed>) = 0 [pid 1171] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1175] creat("./bus", 000 [pid 1171] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1175] <... creat resumed>) = 3 [pid 1171] <... futex resumed>) = 0 [pid 1175] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1171] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1175] <... futex resumed>) = 0 [pid 1171] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1175] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1171] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1175] <... openat resumed>) = 4 [pid 1171] <... futex resumed>) = 0 [pid 1175] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1171] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1175] <... futex resumed>) = 0 [pid 1171] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1175] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1171] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1171] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1177] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 1176] <... write resumed>) = 262144 [pid 1175] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1175] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1171] <... futex resumed>) = 0 [pid 1175] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1171] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1175] <... open resumed>) = 5 [pid 1171] <... futex resumed>) = 0 [pid 1175] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1171] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1175] <... futex resumed>) = 0 [pid 1171] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1175] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1171] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1175] <... mmap resumed>) = 0x20000000 [pid 1171] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1179 attached [pid 1175] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1171] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1179] set_robust_list(0x5555636e06a0, 24 [pid 1175] <... futex resumed>) = 0 [pid 1171] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1179] <... set_robust_list resumed>) = 0 [pid 1175] memfd_create("syzkaller", 0 [pid 1171] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1178 attached [pid 1179] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1177] munmap(0x7fe6f03b1000, 138412032 [pid 1176] munmap(0x7fe6f03b1000, 138412032 [pid 1175] <... memfd_create resumed>) = 6 [pid 1171] <... futex resumed>) = 0 [pid 1179] <... prctl resumed>) = 0 [pid 1178] set_robust_list(0x7fe6f87d19a0, 24 [pid 1177] <... munmap resumed>) = 0 [pid 1176] <... munmap resumed>) = 0 [pid 1175] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1171] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1179] setpgid(0, 0 [pid 1178] <... set_robust_list resumed>) = 0 [pid 1177] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1176] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1175] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1179] <... setpgid resumed>) = 0 [pid 1178] rt_sigprocmask(SIG_SETMASK, [], [pid 1177] <... openat resumed>) = 4 [pid 1176] <... openat resumed>) = 4 [pid 1175] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1179] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1177] ioctl(4, LOOP_SET_FD, 3 [pid 1175] <... write resumed>) = 131072 [pid 1179] <... openat resumed>) = 3 [pid 1177] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1175] munmap(0x7fe6f03b1000, 138412032 [pid 1179] write(3, "1000", 4 [pid 1177] ioctl(4, LOOP_CLR_FD [pid 1175] <... munmap resumed>) = 0 [pid 1179] <... write resumed>) = 4 [pid 1177] <... ioctl resumed>) = 0 [pid 1175] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1179] close(3 [pid 1175] <... openat resumed>) = 7 [pid 1179] <... close resumed>) = 0 [pid 1175] ioctl(7, LOOP_SET_FD, 6executing program [pid 1179] write(1, "executing program\n", 18 [pid 1175] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1179] <... write resumed>) = 18 [pid 1175] ioctl(7, LOOP_CLR_FD [pid 1179] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1178] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1176] ioctl(4, LOOP_SET_FD, 3 [pid 1175] <... ioctl resumed>) = 0 [pid 1179] <... futex resumed>) = 0 [pid 1178] memfd_create("syzkaller", 0 [pid 1176] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1178] <... memfd_create resumed>) = 3 [pid 1176] ioctl(4, LOOP_CLR_FD [pid 1178] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1176] <... ioctl resumed>) = 0 [pid 1178] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1179] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1177] ioctl(4, LOOP_SET_FD, 3 [pid 1179] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1177] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1179] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1177] close(4 [pid 1179] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1177] <... close resumed>) = 0 [pid 1179] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1178] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1177] close(3 [pid 1175] ioctl(7, LOOP_SET_FD, 6 [pid 1179] <... mprotect resumed>) = 0 [pid 1177] <... close resumed>) = 0 [pid 1175] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1179] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1177] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1176] ioctl(4, LOOP_SET_FD, 3 [pid 1175] close(7 [pid 1179] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1178] <... write resumed>) = 262144 [pid 1177] <... futex resumed>) = 1 [pid 1176] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1175] <... close resumed>) = 0 [pid 1173] <... futex resumed>) = 0 [pid 1179] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1178] munmap(0x7fe6f03b1000, 138412032 [pid 1177] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1176] close(4 [pid 1175] close(6 [pid 1173] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1178] <... munmap resumed>) = 0 [pid 1177] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1176] <... close resumed>) = 0 [pid 1175] <... close resumed>) = 0 [pid 1173] <... futex resumed>) = 0 [pid 1179] <... clone3 resumed> => {parent_tid=[1180]}, 88) = 1180 [pid 1178] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1177] chdir("./file0" [pid 1176] close(3 [pid 1175] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1173] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1179] rt_sigprocmask(SIG_SETMASK, [], [pid 1178] <... openat resumed>) = 4 [pid 1177] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1176] <... close resumed>) = 0 [pid 1175] <... futex resumed>) = 1 [pid 1171] <... futex resumed>) = 0 [pid 1179] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1178] ioctl(4, LOOP_SET_FD, 3 [pid 1177] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1176] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1175] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1171] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1179] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1178] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1177] <... futex resumed>) = 1 [pid 1176] <... futex resumed>) = 1 [pid 1175] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1173] <... futex resumed>) = 0 [pid 1172] <... futex resumed>) = 0 [pid 1171] <... futex resumed>) = 0 [pid 1179] <... futex resumed>) = 0 [pid 1178] ioctl(4, LOOP_CLR_FD [pid 1177] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1176] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1175] mknod(0x20000000, 000 [pid 1173] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1172] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1171] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1179] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1178] <... ioctl resumed>) = 0 [pid 1177] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1176] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1175] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1173] <... futex resumed>) = 0 [pid 1172] <... futex resumed>) = 0 [pid 1177] creat("./bus", 000 [pid 1176] chdir("./file0" [pid 1175] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1173] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1172] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1177] <... creat resumed>) = 3 [pid 1176] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1175] <... futex resumed>) = 1 [pid 1171] <... futex resumed>) = 0 [pid 1177] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1176] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1175] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1171] exit_group(0 [pid 1178] ioctl(4, LOOP_SET_FD, 3 [pid 1177] <... futex resumed>) = 1 [pid 1176] <... futex resumed>) = 1 [pid 1175] <... futex resumed>) = ? [pid 1173] <... futex resumed>) = 0 [pid 1172] <... futex resumed>) = 0 [pid 1171] <... exit_group resumed>) = ? [pid 1178] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1177] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1176] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1175] +++ exited with 0 +++ [pid 1173] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1172] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1171] +++ exited with 0 +++ ./strace-static-x86_64: Process 1180 attached [pid 1178] close(4 [pid 1177] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1176] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1173] <... futex resumed>) = 0 [pid 1172] <... futex resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1171, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1180] set_robust_list(0x7fe6f87d19a0, 24 [pid 1178] <... close resumed>) = 0 [pid 1177] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1176] creat("./bus", 000 [pid 1173] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1172] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1180] <... set_robust_list resumed>) = 0 [pid 1178] close(3 [pid 1177] <... openat resumed>) = 4 [pid 1176] <... creat resumed>) = 3 [pid 1180] rt_sigprocmask(SIG_SETMASK, [], [pid 1177] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... restart_syscall resumed>) = 0 [pid 1180] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1178] <... close resumed>) = 0 [pid 1177] <... futex resumed>) = 1 [pid 1176] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1173] <... futex resumed>) = 0 [pid 1180] memfd_create("syzkaller", 0 [pid 1178] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1177] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1176] <... futex resumed>) = 1 [pid 1173] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1172] <... futex resumed>) = 0 [pid 1180] <... memfd_create resumed>) = 3 [pid 1178] <... futex resumed>) = 1 [pid 1177] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1176] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1174] <... futex resumed>) = 0 [pid 1173] <... futex resumed>) = 0 [pid 1172] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1180] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1178] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1177] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1176] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1174] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1173] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1172] <... futex resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 1180] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1178] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1177] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1176] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1174] <... futex resumed>) = 0 [pid 1172] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] ioctl(3, LOOP_CLR_FD [pid 1180] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1178] chdir("./file0" [pid 1177] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... ioctl resumed>) = 0 [pid 1180] <... write resumed>) = 262144 [pid 1177] <... futex resumed>) = 1 [pid 305] close(3 [pid 1177] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 305] <... close resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1178] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1176] <... openat resumed>) = 4 [pid 1174] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1173] <... futex resumed>) = 0 [pid 1178] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1176] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1174] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1173] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1181 [pid 1180] munmap(0x7fe6f03b1000, 138412032 [pid 1178] <... futex resumed>) = 0 [pid 1177] <... futex resumed>) = 0 [pid 1176] <... futex resumed>) = 1 [pid 1174] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1173] <... futex resumed>) = 1 [pid 1172] <... futex resumed>) = 0 [pid 1180] <... munmap resumed>) = 0 [pid 1178] creat("./bus", 000 [pid 1177] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1176] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1174] <... futex resumed>) = 0 [pid 1173] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1172] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1178] <... creat resumed>) = 3 [pid 1177] <... open resumed>) = 5 [pid 1176] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1174] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1178] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1177] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1176] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1174] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1172] <... futex resumed>) = 0 [pid 1178] <... futex resumed>) = 0 [pid 1177] <... futex resumed>) = 1 [pid 1173] <... futex resumed>) = 0 [pid 1177] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1174] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1173] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1172] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1178] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1177] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1176] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1174] <... futex resumed>) = 0 [pid 1173] <... futex resumed>) = 0 [pid 1180] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1178] <... openat resumed>) = 4 [pid 1177] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1176] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1174] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1173] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1178] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1180] <... openat resumed>) = 4 [pid 1178] <... futex resumed>) = 0 [pid 1177] <... mmap resumed>) = 0x20000000 [pid 1176] <... futex resumed>) = 1 [pid 1174] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1172] <... futex resumed>) = 0 [pid 1180] ioctl(4, LOOP_SET_FD, 3 [pid 1178] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1177] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1176] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1174] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1172] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1180] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1178] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1177] <... futex resumed>) = 1 [pid 1176] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1174] <... futex resumed>) = 0 [pid 1173] <... futex resumed>) = 0 [pid 1172] <... futex resumed>) = 0 [pid 1180] ioctl(4, LOOP_CLR_FD [pid 1178] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1177] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1176] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1174] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1173] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1172] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1180] <... ioctl resumed>) = 0 [pid 1177] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1176] <... open resumed>) = 5 [pid 1173] <... futex resumed>) = 0 [pid 1178] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1177] memfd_create("syzkaller", 0 [pid 1176] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1173] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1178] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1177] <... memfd_create resumed>) = 6 [pid 1176] <... futex resumed>) = 1 [pid 1178] <... futex resumed>) = 1 [pid 1177] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1176] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1174] <... futex resumed>) = 0 [pid 1172] <... futex resumed>) = 0 [pid 1178] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1177] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1174] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1172] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1178] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ./strace-static-x86_64: Process 1181 attached [pid 1181] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1181] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1181] setpgid(0, 0 [pid 1178] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1177] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1176] <... futex resumed>) = 0 [pid 1174] <... futex resumed>) = 0 [pid 1172] <... futex resumed>) = 1 [pid 1178] <... open resumed>) = 5 [pid 1181] <... setpgid resumed>) = 0 [pid 1180] ioctl(4, LOOP_SET_FD, 3 [pid 1181] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1180] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1178] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1177] <... write resumed>) = 131072 [pid 1176] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1174] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1172] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1181] <... openat resumed>) = 3 [pid 1180] close(4 [pid 1178] <... futex resumed>) = 0 [pid 1177] munmap(0x7fe6f03b1000, 138412032 [pid 1181] write(3, "1000", 4 [pid 1180] <... close resumed>) = 0 [pid 1178] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1176] <... mmap resumed>) = 0x20000000 [pid 1174] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1181] <... write resumed>) = 4 [pid 1180] close(3 [pid 1177] <... munmap resumed>) = 0 [pid 1176] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1174] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1181] close(3 [pid 1180] <... close resumed>) = 0 [pid 1177] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1176] <... futex resumed>) = 1 [pid 1178] <... futex resumed>) = 0 [pid 1174] <... futex resumed>) = 1 [pid 1172] <... futex resumed>) = 0 [pid 1181] <... close resumed>) = 0 [pid 1180] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1178] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1177] <... openat resumed>) = 7 [pid 1176] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1174] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1172] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1181] write(1, "executing program\n", 18 [pid 1180] <... futex resumed>) = 1 executing program [pid 1179] <... futex resumed>) = 0 [pid 1178] <... mmap resumed>) = 0x20000000 [pid 1181] <... write resumed>) = 18 [pid 1180] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1179] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1178] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1177] ioctl(7, LOOP_SET_FD, 6 [pid 1176] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1172] <... futex resumed>) = 0 [pid 1181] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1180] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1179] <... futex resumed>) = 0 [pid 1178] <... futex resumed>) = 1 [pid 1177] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1174] <... futex resumed>) = 0 [pid 1181] <... futex resumed>) = 0 [pid 1180] chdir("./file0" [pid 1179] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1178] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1177] ioctl(7, LOOP_CLR_FD [pid 1176] memfd_create("syzkaller", 0 [pid 1174] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1172] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1181] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1180] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1178] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1177] <... ioctl resumed>) = 0 [pid 1176] <... memfd_create resumed>) = 6 [pid 1174] <... futex resumed>) = 0 [pid 1181] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1180] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1178] memfd_create("syzkaller", 0 [pid 1176] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1174] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1181] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1180] <... futex resumed>) = 1 [pid 1179] <... futex resumed>) = 0 [pid 1178] <... memfd_create resumed>) = 6 [pid 1176] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1181] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1180] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1179] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1178] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1181] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1180] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1179] <... futex resumed>) = 0 [pid 1181] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1180] creat("./bus", 000 [pid 1179] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1178] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1176] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1181] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1180] <... creat resumed>) = 3 [pid 1181] <... mprotect resumed>) = 0 [pid 1180] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1181] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1180] <... futex resumed>) = 1 [pid 1179] <... futex resumed>) = 0 [pid 1181] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1180] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1179] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1178] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1177] ioctl(7, LOOP_SET_FD, 6 [pid 1181] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1180] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1179] <... futex resumed>) = 0 [pid 1176] <... write resumed>) = 131072 [pid 1180] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1179] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1181] <... clone3 resumed> => {parent_tid=[1182]}, 88) = 1182 [pid 1180] <... openat resumed>) = 4 [pid 1181] rt_sigprocmask(SIG_SETMASK, [], [pid 1180] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1181] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1180] <... futex resumed>) = 1 [pid 1179] <... futex resumed>) = 0 [pid 1181] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1180] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1179] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1181] <... futex resumed>) = 0 [pid 1180] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1179] <... futex resumed>) = 0 [pid 1181] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1180] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1179] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1182 attached [pid 1182] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1182] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1182] memfd_create("syzkaller", 0 [pid 1177] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1182] <... memfd_create resumed>) = 3 [pid 1182] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1177] close(7 [pid 1182] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1178] <... write resumed>) = 131072 [pid 1177] <... close resumed>) = 0 [pid 1178] munmap(0x7fe6f03b1000, 138412032 [pid 1176] munmap(0x7fe6f03b1000, 138412032 [pid 1177] close(6 [pid 1178] <... munmap resumed>) = 0 [pid 1177] <... close resumed>) = 0 [pid 1176] <... munmap resumed>) = 0 [pid 1177] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1180] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1178] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1176] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1177] <... futex resumed>) = 1 [pid 1180] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1178] <... openat resumed>) = 7 [pid 1173] <... futex resumed>) = 0 [pid 1180] <... futex resumed>) = 1 [pid 1179] <... futex resumed>) = 0 [pid 1178] ioctl(7, LOOP_SET_FD, 6 [pid 1177] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1176] <... openat resumed>) = 7 [pid 1173] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1180] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1179] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1178] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1177] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1176] ioctl(7, LOOP_SET_FD, 6 [pid 1173] <... futex resumed>) = 0 [pid 1180] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1179] <... futex resumed>) = 0 [pid 1178] ioctl(7, LOOP_CLR_FD [pid 1177] mknod(0x20000000, 000 [pid 1176] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1173] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1180] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1179] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1178] <... ioctl resumed>) = 0 [pid 1177] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1176] ioctl(7, LOOP_CLR_FD [pid 1180] <... open resumed>) = 5 [pid 1177] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1176] <... ioctl resumed>) = 0 [pid 1180] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1177] <... futex resumed>) = 1 [pid 1173] <... futex resumed>) = 0 [pid 1180] <... futex resumed>) = 1 [pid 1179] <... futex resumed>) = 0 [pid 1177] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1173] exit_group(0 [pid 1180] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1179] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1177] <... futex resumed>) = ? [pid 1173] <... exit_group resumed>) = ? [pid 1180] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1179] <... futex resumed>) = 0 [pid 1180] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1179] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1180] <... mmap resumed>) = 0x20000000 [pid 1180] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1179] <... futex resumed>) = 0 [pid 1180] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1179] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1180] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1179] <... futex resumed>) = 0 [pid 1180] memfd_create("syzkaller", 0 [pid 1179] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1180] <... memfd_create resumed>) = 6 [pid 1180] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1182] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1180] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1178] ioctl(7, LOOP_SET_FD, 6 [pid 1177] +++ exited with 0 +++ [pid 1173] +++ exited with 0 +++ [pid 1180] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1178] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1176] ioctl(7, LOOP_SET_FD, 6 [pid 1180] <... write resumed>) = 131072 [pid 1178] close(7 [pid 1176] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1173, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1180] munmap(0x7fe6f03b1000, 138412032 [pid 1178] <... close resumed>) = 0 [pid 1176] close(7 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 1180] <... munmap resumed>) = 0 [pid 1178] close(6 [pid 1176] <... close resumed>) = 0 [pid 1180] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 1180] ioctl(7, LOOP_SET_FD, 6 [pid 1178] <... close resumed>) = 0 [pid 1180] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1176] close(6 [pid 1178] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1180] ioctl(7, LOOP_CLR_FD) = 0 [pid 1176] <... close resumed>) = 0 [pid 1178] <... futex resumed>) = 1 [pid 1176] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1178] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1174] <... futex resumed>) = 0 [pid 1176] <... futex resumed>) = 1 [pid 1174] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1172] <... futex resumed>) = 0 [pid 1178] <... futex resumed>) = 0 [pid 1176] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1174] <... futex resumed>) = 1 [pid 1172] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1178] mknod(0x20000000, 000 [pid 1176] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1174] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1172] <... futex resumed>) = 0 [pid 1178] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1176] mknod(0x20000000, 000 [pid 1172] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1178] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1176] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1178] <... futex resumed>) = 1 [pid 1176] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1174] <... futex resumed>) = 0 [pid 1178] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1176] <... futex resumed>) = 1 [pid 1172] <... futex resumed>) = 0 [pid 1176] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1174] exit_group(0 [pid 1172] exit_group(0 [pid 1178] <... futex resumed>) = ? [pid 1174] <... exit_group resumed>) = ? [pid 1172] <... exit_group resumed>) = ? [pid 1178] +++ exited with 0 +++ [pid 1176] <... futex resumed>) = ? [pid 1174] +++ exited with 0 +++ [pid 1182] <... write resumed>) = 262144 [pid 1180] ioctl(7, LOOP_SET_FD, 6 [pid 1176] +++ exited with 0 +++ [pid 1172] +++ exited with 0 +++ [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1174, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1180] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1182] munmap(0x7fe6f03b1000, 138412032 [pid 1180] close(7 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1172, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] <... restart_syscall resumed>) = 0 [pid 1182] <... munmap resumed>) = 0 [pid 1180] <... close resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1182] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1180] close(6 [pid 306] <... openat resumed>) = 3 [pid 1182] <... openat resumed>) = 4 [pid 1180] <... close resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1182] ioctl(4, LOOP_SET_FD, 3 [pid 1180] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... ioctl resumed>) = 0 [pid 303] <... openat resumed>) = 3 [pid 1182] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1180] <... futex resumed>) = 1 [pid 1179] <... futex resumed>) = 0 [pid 306] close(3 [pid 303] ioctl(3, LOOP_CLR_FD [pid 1182] ioctl(4, LOOP_CLR_FD [pid 1180] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1179] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... close resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 1182] <... ioctl resumed>) = 0 [pid 1180] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1179] <... futex resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] close(3 [pid 1180] mknod(0x20000000, 000 [pid 1179] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... restart_syscall resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 1180] <... mknod resumed>) = -1 EEXIST (File exists) [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1183 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1180] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1179] <... futex resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1184 [pid 1182] ioctl(4, LOOP_SET_FD, 3 [pid 1180] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1179] exit_group(0 [pid 304] <... openat resumed>) = 3 [pid 1182] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1180] <... futex resumed>) = ? [pid 1179] <... exit_group resumed>) = ? [pid 304] ioctl(3, LOOP_CLR_FD [pid 1182] close(4 [pid 1180] +++ exited with 0 +++ [pid 1179] +++ exited with 0 +++ [pid 304] <... ioctl resumed>) = 0 [pid 1182] <... close resumed>) = 0 [pid 304] close(3 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1179, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 1182] close(3 [pid 304] <... close resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 1182] <... close resumed>) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1183 attached [pid 1182] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1181] <... futex resumed>) = 0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1185 [pid 1182] chdir("./file0" [pid 1181] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1182] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1181] <... futex resumed>) = 0 [pid 1182] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1181] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1182] <... futex resumed>) = 0 [pid 1181] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1182] creat("./bus", 000 [pid 1181] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1182] <... creat resumed>) = 3 [pid 1181] <... futex resumed>) = 0 [pid 1182] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1181] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1182] <... futex resumed>) = 0 [pid 1181] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1182] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1181] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1182] <... openat resumed>) = 4 [pid 1181] <... futex resumed>) = 0 [pid 1182] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1181] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1182] <... futex resumed>) = 0 [pid 1181] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1182] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1181] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1182] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1181] <... futex resumed>) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 1182] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1181] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1182] <... futex resumed>) = 0 [pid 1181] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1182] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1181] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1182] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1181] <... futex resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 1182] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1181] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] ioctl(3, LOOP_CLR_FD [pid 1182] <... open resumed>) = 5 [pid 302] <... ioctl resumed>) = 0 [pid 1182] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] close(3 [pid 1182] <... futex resumed>) = 1 [pid 1181] <... futex resumed>) = 0 [pid 302] <... close resumed>) = 0 [pid 1182] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1181] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1183] set_robust_list(0x5555636e06a0, 24 [pid 1182] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1181] <... futex resumed>) = 0 [pid 1182] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1181] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1186 [pid 1182] <... mmap resumed>) = 0x20000000 [pid 1182] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1181] <... futex resumed>) = 0 [pid 1182] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1181] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1182] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1181] <... futex resumed>) = 0 [pid 1182] memfd_create("syzkaller", 0 [pid 1181] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1182] <... memfd_create resumed>) = 6 [pid 1182] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 1185 attached ) = 0x7fe6f03b1000 ./strace-static-x86_64: Process 1186 attached ./strace-static-x86_64: Process 1184 attached [pid 1185] set_robust_list(0x5555636e06a0, 24 [pid 1183] <... set_robust_list resumed>) = 0 [pid 1182] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1186] set_robust_list(0x5555636e06a0, 24 [pid 1185] <... set_robust_list resumed>) = 0 [pid 1184] set_robust_list(0x5555636e06a0, 24 [pid 1183] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1182] <... write resumed>) = 131072 [pid 1186] <... set_robust_list resumed>) = 0 [pid 1184] <... set_robust_list resumed>) = 0 [pid 1183] <... prctl resumed>) = 0 [pid 1186] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1185] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1184] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1183] setpgid(0, 0 [pid 1182] munmap(0x7fe6f03b1000, 138412032 [pid 1186] <... prctl resumed>) = 0 [pid 1184] <... prctl resumed>) = 0 [pid 1183] <... setpgid resumed>) = 0 [pid 1186] setpgid(0, 0 [pid 1185] <... prctl resumed>) = 0 [pid 1182] <... munmap resumed>) = 0 [pid 1184] setpgid(0, 0 [pid 1186] <... setpgid resumed>) = 0 [pid 1185] setpgid(0, 0 [pid 1184] <... setpgid resumed>) = 0 [pid 1183] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1182] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1185] <... setpgid resumed>) = 0 [pid 1184] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1183] <... openat resumed>) = 3 [pid 1182] <... openat resumed>) = 7 [pid 1186] <... openat resumed>) = 3 [pid 1185] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1184] <... openat resumed>) = 3 [pid 1183] write(3, "1000", 4 [pid 1182] ioctl(7, LOOP_SET_FD, 6 [pid 1186] write(3, "1000", 4 [pid 1185] <... openat resumed>) = 3 [pid 1184] write(3, "1000", 4 [pid 1183] <... write resumed>) = 4 [pid 1182] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1186] <... write resumed>) = 4 [pid 1185] write(3, "1000", 4 [pid 1184] <... write resumed>) = 4 [pid 1183] close(3 [pid 1182] ioctl(7, LOOP_CLR_FD [pid 1186] close(3 [pid 1185] <... write resumed>) = 4 [pid 1184] close(3 [pid 1183] <... close resumed>) = 0 [pid 1182] <... ioctl resumed>) = 0 executing program [pid 1186] <... close resumed>) = 0 [pid 1185] close(3 [pid 1184] <... close resumed>) = 0 [pid 1183] write(1, "executing program\n", 18executing program executing program [pid 1186] write(1, "executing program\n", 18 [pid 1185] <... close resumed>) = 0 [pid 1184] write(1, "executing program\n", 18 executing program [pid 1183] <... write resumed>) = 18 [pid 1186] <... write resumed>) = 18 [pid 1185] write(1, "executing program\n", 18 [pid 1184] <... write resumed>) = 18 [pid 1186] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1185] <... write resumed>) = 18 [pid 1184] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1183] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1186] <... futex resumed>) = 0 [pid 1185] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1184] <... futex resumed>) = 0 [pid 1183] <... futex resumed>) = 0 [pid 1186] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1185] <... futex resumed>) = 0 [pid 1184] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1183] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1186] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1185] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1184] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1183] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1182] ioctl(7, LOOP_SET_FD, 6 [pid 1186] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1185] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1184] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1183] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1182] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1186] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1185] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1184] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1183] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1182] close(7 [pid 1186] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1185] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1184] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1183] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1182] <... close resumed>) = 0 [pid 1186] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1185] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1182] close(6 [pid 1185] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1182] <... close resumed>) = 0 [pid 1185] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1182] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1185] <... mprotect resumed>) = 0 [pid 1182] <... futex resumed>) = 1 [pid 1181] <... futex resumed>) = 0 [pid 1185] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1182] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1181] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1185] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1182] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1181] <... futex resumed>) = 0 [pid 1185] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1182] mknod(0x20000000, 000 [pid 1181] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1186] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1184] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1183] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1182] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1186] <... mprotect resumed>) = 0 [pid 1185] <... clone3 resumed> => {parent_tid=[1187]}, 88) = 1187 [pid 1184] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1183] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1182] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1186] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1185] rt_sigprocmask(SIG_SETMASK, [], [pid 1184] <... mprotect resumed>) = 0 [pid 1183] <... mprotect resumed>) = 0 [pid 1182] <... futex resumed>) = 1 [pid 1181] <... futex resumed>) = 0 [pid 1186] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1185] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1184] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1183] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1182] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1181] exit_group(0 [pid 1186] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1185] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1184] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1183] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1182] <... futex resumed>) = ? [pid 1181] <... exit_group resumed>) = ? [pid 1185] <... futex resumed>) = 0 [pid 1184] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1183] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1182] +++ exited with 0 +++ [pid 1181] +++ exited with 0 +++ [pid 1186] <... clone3 resumed> => {parent_tid=[1188]}, 88) = 1188 [pid 1185] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1181, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1186] rt_sigprocmask(SIG_SETMASK, [], [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1186] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1184] <... clone3 resumed> => {parent_tid=[1189]}, 88) = 1189 [pid 1183] <... clone3 resumed> => {parent_tid=[1190]}, 88) = 1190 [pid 1186] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1188 attached [pid 1188] set_robust_list(0x7fe6f87d19a0, 24 [pid 305] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 1190 attached ./strace-static-x86_64: Process 1189 attached ./strace-static-x86_64: Process 1187 attached [pid 1186] <... futex resumed>) = 0 [pid 1184] rt_sigprocmask(SIG_SETMASK, [], [pid 1183] rt_sigprocmask(SIG_SETMASK, [], [pid 1186] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1184] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1183] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1184] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1183] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1184] <... futex resumed>) = 0 [pid 1183] <... futex resumed>) = 0 [pid 1184] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1183] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1189] set_robust_list(0x7fe6f87d19a0, 24 [pid 1188] <... set_robust_list resumed>) = 0 [pid 1189] <... set_robust_list resumed>) = 0 [pid 1188] rt_sigprocmask(SIG_SETMASK, [], [pid 1189] rt_sigprocmask(SIG_SETMASK, [], [pid 1188] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1189] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1188] memfd_create("syzkaller", 0 [pid 305] <... openat resumed>) = 3 [pid 1189] memfd_create("syzkaller", 0 [pid 1188] <... memfd_create resumed>) = 3 [pid 1187] set_robust_list(0x7fe6f87d19a0, 24 [pid 305] ioctl(3, LOOP_CLR_FD [pid 1189] <... memfd_create resumed>) = 3 [pid 1188] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1187] <... set_robust_list resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 1189] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1188] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1187] rt_sigprocmask(SIG_SETMASK, [], [pid 305] close(3 [pid 1189] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1188] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1187] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 305] <... close resumed>) = 0 [pid 1189] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1187] memfd_create("syzkaller", 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1187] <... memfd_create resumed>) = 3 [pid 1188] <... write resumed>) = 262144 [pid 1187] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1191 ./strace-static-x86_64: Process 1191 attached [pid 1189] <... write resumed>) = 262144 [pid 1187] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1191] set_robust_list(0x5555636e06a0, 24 [pid 1187] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1188] munmap(0x7fe6f03b1000, 138412032 [pid 1189] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1188] <... munmap resumed>) = 0 [pid 1188] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 1189] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1191] <... set_robust_list resumed>) = 0 [pid 1191] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1191] setpgid(0, 0) = 0 [pid 1191] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1189] <... openat resumed>) = 4 [pid 1191] <... openat resumed>) = 3 [pid 1189] ioctl(4, LOOP_SET_FD, 3 [pid 1188] ioctl(4, LOOP_SET_FD, 3 [pid 1191] write(3, "1000", 4) = 4 [pid 1190] set_robust_list(0x7fe6f87d19a0, 24 [pid 1189] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1188] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1187] <... write resumed>) = 262144 [pid 1191] close(3) = 0 [pid 1191] write(1, "executing program\n", 18executing program ) = 18 [pid 1191] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1191] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1191] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1191] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1191] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1190] <... set_robust_list resumed>) = 0 [pid 1191] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1190] rt_sigprocmask(SIG_SETMASK, [], [pid 1191] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1190] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1189] ioctl(4, LOOP_CLR_FD [pid 1188] ioctl(4, LOOP_CLR_FD./strace-static-x86_64: Process 1192 attached [pid 1191] <... clone3 resumed> => {parent_tid=[1192]}, 88) = 1192 [pid 1187] munmap(0x7fe6f03b1000, 138412032 [pid 1192] set_robust_list(0x7fe6f87d19a0, 24 [pid 1191] rt_sigprocmask(SIG_SETMASK, [], [pid 1190] memfd_create("syzkaller", 0 [pid 1189] <... ioctl resumed>) = 0 [pid 1188] <... ioctl resumed>) = 0 [pid 1191] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1191] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1190] <... memfd_create resumed>) = 3 [pid 1191] <... futex resumed>) = 0 [pid 1191] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1190] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1192] <... set_robust_list resumed>) = 0 [pid 1187] <... munmap resumed>) = 0 [pid 1187] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 1187] ioctl(4, LOOP_SET_FD, 3 [pid 1192] rt_sigprocmask(SIG_SETMASK, [], [pid 1190] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1187] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1187] ioctl(4, LOOP_CLR_FD [pid 1189] ioctl(4, LOOP_SET_FD, 3 [pid 1188] ioctl(4, LOOP_SET_FD, 3 [pid 1187] <... ioctl resumed>) = 0 [pid 1189] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1188] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1189] close(4 [pid 1188] close(4 [pid 1189] <... close resumed>) = 0 [pid 1188] <... close resumed>) = 0 [pid 1189] close(3 [pid 1188] close(3 [pid 1189] <... close resumed>) = 0 [pid 1188] <... close resumed>) = 0 [pid 1189] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1188] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1187] ioctl(4, LOOP_SET_FD, 3 [pid 1189] <... futex resumed>) = 1 [pid 1188] <... futex resumed>) = 1 [pid 1187] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1186] <... futex resumed>) = 0 [pid 1184] <... futex resumed>) = 0 [pid 1189] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1188] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1187] close(4 [pid 1186] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1184] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1189] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1188] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1187] <... close resumed>) = 0 [pid 1186] <... futex resumed>) = 0 [pid 1184] <... futex resumed>) = 0 [pid 1189] chdir("./file0" [pid 1188] chdir("./file0" [pid 1187] close(3 [pid 1186] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1184] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1189] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1188] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1187] <... close resumed>) = 0 [pid 1189] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1188] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1187] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1189] <... futex resumed>) = 1 [pid 1188] <... futex resumed>) = 1 [pid 1187] <... futex resumed>) = 1 [pid 1186] <... futex resumed>) = 0 [pid 1185] <... futex resumed>) = 0 [pid 1184] <... futex resumed>) = 0 [pid 1189] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1188] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1187] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1186] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1185] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1184] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1189] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1188] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1187] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1186] <... futex resumed>) = 0 [pid 1185] <... futex resumed>) = 0 [pid 1184] <... futex resumed>) = 0 [pid 1189] creat("./bus", 000 [pid 1188] creat("./bus", 000 [pid 1187] chdir("./file0" [pid 1186] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1185] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1184] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1189] <... creat resumed>) = 3 [pid 1188] <... creat resumed>) = 3 [pid 1187] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1189] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1188] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1187] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1189] <... futex resumed>) = 1 [pid 1188] <... futex resumed>) = 1 [pid 1187] <... futex resumed>) = 1 [pid 1186] <... futex resumed>) = 0 [pid 1185] <... futex resumed>) = 0 [pid 1184] <... futex resumed>) = 0 [pid 1189] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1188] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1187] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1186] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1185] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1184] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1189] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1188] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1187] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1186] <... futex resumed>) = 0 [pid 1185] <... futex resumed>) = 0 [pid 1184] <... futex resumed>) = 0 [pid 1189] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1188] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1187] creat("./bus", 000 [pid 1186] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1185] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1184] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1189] <... openat resumed>) = 4 [pid 1188] <... openat resumed>) = 4 [pid 1187] <... creat resumed>) = 3 [pid 1189] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1188] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1187] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1189] <... futex resumed>) = 1 [pid 1188] <... futex resumed>) = 1 [pid 1187] <... futex resumed>) = 1 [pid 1186] <... futex resumed>) = 0 [pid 1185] <... futex resumed>) = 0 [pid 1184] <... futex resumed>) = 0 [pid 1189] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1188] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1187] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1186] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1185] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1184] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1189] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1188] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1187] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1186] <... futex resumed>) = 0 [pid 1185] <... futex resumed>) = 0 [pid 1184] <... futex resumed>) = 0 [pid 1189] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1188] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1187] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1186] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1185] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1184] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1187] <... openat resumed>) = 4 [pid 1187] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1185] <... futex resumed>) = 0 [pid 1187] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1185] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1187] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1185] <... futex resumed>) = 0 [pid 1187] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1185] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1192] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1192] memfd_create("syzkaller", 0) = 3 [pid 1192] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1192] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 1190] <... write resumed>) = 262144 [pid 1192] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1190] munmap(0x7fe6f03b1000, 138412032 [pid 1192] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 1192] ioctl(4, LOOP_SET_FD, 3 [pid 1190] <... munmap resumed>) = 0 [pid 1192] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1192] ioctl(4, LOOP_CLR_FD) = 0 [pid 1190] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1189] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1188] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1187] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1189] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1188] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1187] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1189] <... futex resumed>) = 1 [pid 1188] <... futex resumed>) = 1 [pid 1187] <... futex resumed>) = 1 [pid 1186] <... futex resumed>) = 0 [pid 1185] <... futex resumed>) = 0 [pid 1184] <... futex resumed>) = 0 [pid 1189] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1188] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1187] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1190] <... openat resumed>) = 4 [pid 1186] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1185] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1184] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1189] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1188] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1187] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1186] <... futex resumed>) = 0 [pid 1185] <... futex resumed>) = 0 [pid 1184] <... futex resumed>) = 0 [pid 1189] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1188] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1187] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1186] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1185] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1184] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1190] ioctl(4, LOOP_SET_FD, 3 [pid 1189] <... open resumed>) = 5 [pid 1188] <... open resumed>) = 5 [pid 1187] <... open resumed>) = 5 [pid 1189] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1188] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1187] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1189] <... futex resumed>) = 1 [pid 1188] <... futex resumed>) = 1 [pid 1187] <... futex resumed>) = 1 [pid 1186] <... futex resumed>) = 0 [pid 1185] <... futex resumed>) = 0 [pid 1184] <... futex resumed>) = 0 [pid 1189] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1188] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1187] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1186] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1185] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1184] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1189] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1188] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1187] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1186] <... futex resumed>) = 0 [pid 1185] <... futex resumed>) = 0 [pid 1184] <... futex resumed>) = 0 [pid 1189] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1188] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1187] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1186] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1185] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1184] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1189] <... mmap resumed>) = 0x20000000 [pid 1188] <... mmap resumed>) = 0x20000000 [pid 1187] <... mmap resumed>) = 0x20000000 [pid 1192] ioctl(4, LOOP_SET_FD, 3 [pid 1189] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1188] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1187] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1192] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1189] <... futex resumed>) = 1 [pid 1188] <... futex resumed>) = 1 [pid 1187] <... futex resumed>) = 1 [pid 1186] <... futex resumed>) = 0 [pid 1185] <... futex resumed>) = 0 [pid 1184] <... futex resumed>) = 0 [pid 1192] close(4 [pid 1189] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1188] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1187] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1186] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1185] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1184] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1192] <... close resumed>) = 0 [pid 1190] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1189] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1188] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1187] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1186] <... futex resumed>) = 0 [pid 1185] <... futex resumed>) = 0 [pid 1184] <... futex resumed>) = 0 [pid 1192] close(3 [pid 1190] ioctl(4, LOOP_CLR_FD) = 0 [pid 1189] memfd_create("syzkaller", 0) = 6 [pid 1189] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1192] <... close resumed>) = 0 [pid 1189] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1188] memfd_create("syzkaller", 0 [pid 1187] memfd_create("syzkaller", 0 [pid 1186] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1185] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1184] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1192] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1190] ioctl(4, LOOP_SET_FD, 3 [pid 1189] <... write resumed>) = 131072 [pid 1188] <... memfd_create resumed>) = 6 [pid 1187] <... memfd_create resumed>) = 6 [pid 1190] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1189] munmap(0x7fe6f03b1000, 138412032 [pid 1188] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1187] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1192] <... futex resumed>) = 1 [pid 1191] <... futex resumed>) = 0 [pid 1190] close(4 [pid 1189] <... munmap resumed>) = 0 [pid 1191] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1190] <... close resumed>) = 0 [pid 1189] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1188] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1187] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1192] chdir("./file0" [pid 1191] <... futex resumed>) = 0 [pid 1190] close(3 [pid 1189] <... openat resumed>) = 7 [pid 1188] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1191] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1190] <... close resumed>) = 0 [pid 1189] ioctl(7, LOOP_SET_FD, 6 [pid 1190] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1189] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1190] <... futex resumed>) = 1 [pid 1189] ioctl(7, LOOP_CLR_FD [pid 1183] <... futex resumed>) = 0 [pid 1190] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1189] <... ioctl resumed>) = 0 [pid 1183] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1190] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1187] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1183] <... futex resumed>) = 0 [pid 1190] chdir("./file0" [pid 1183] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1190] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1190] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1183] <... futex resumed>) = 0 [pid 1190] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1183] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1190] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1188] <... write resumed>) = 131072 [pid 1183] <... futex resumed>) = 0 [pid 1190] creat("./bus", 000 [pid 1183] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1190] <... creat resumed>) = 3 [pid 1190] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1183] <... futex resumed>) = 0 [pid 1190] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1188] munmap(0x7fe6f03b1000, 138412032 [pid 1187] <... write resumed>) = 131072 [pid 1183] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1190] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1183] <... futex resumed>) = 0 [pid 1190] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1183] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1190] <... openat resumed>) = 4 [pid 1187] munmap(0x7fe6f03b1000, 138412032 [pid 1190] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1189] ioctl(7, LOOP_SET_FD, 6 [pid 1190] <... futex resumed>) = 1 [pid 1189] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1183] <... futex resumed>) = 0 [pid 1190] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1189] close(7 [pid 1188] <... munmap resumed>) = 0 [pid 1183] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1190] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1189] <... close resumed>) = 0 [pid 1187] <... munmap resumed>) = 0 [pid 1183] <... futex resumed>) = 0 [pid 1190] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1189] close(6 [pid 1183] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1190] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1189] <... close resumed>) = 0 [pid 1188] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1187] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1190] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1189] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1190] <... futex resumed>) = 1 [pid 1189] <... futex resumed>) = 1 [pid 1188] <... openat resumed>) = 7 [pid 1187] <... openat resumed>) = 7 [pid 1184] <... futex resumed>) = 0 [pid 1183] <... futex resumed>) = 0 [pid 1192] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1190] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1189] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1188] ioctl(7, LOOP_SET_FD, 6 [pid 1184] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1183] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1190] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1189] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1184] <... futex resumed>) = 0 [pid 1183] <... futex resumed>) = 0 [pid 1190] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1189] mknod(0x20000000, 000 [pid 1184] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1183] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1190] <... open resumed>) = 5 [pid 1189] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1190] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1189] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1190] <... futex resumed>) = 1 [pid 1189] <... futex resumed>) = 1 [pid 1184] <... futex resumed>) = 0 [pid 1183] <... futex resumed>) = 0 [pid 1190] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1189] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1184] exit_group(0 [pid 1183] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1190] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1189] <... futex resumed>) = ? [pid 1184] <... exit_group resumed>) = ? [pid 1183] <... futex resumed>) = 0 [pid 1192] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1190] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1189] +++ exited with 0 +++ [pid 1188] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1187] ioctl(7, LOOP_SET_FD, 6 [pid 1184] +++ exited with 0 +++ [pid 1183] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1192] <... futex resumed>) = 1 [pid 1191] <... futex resumed>) = 0 [pid 1190] <... mmap resumed>) = 0x20000000 [pid 1188] ioctl(7, LOOP_CLR_FD [pid 1187] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1192] creat("./bus", 000 [pid 1191] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1190] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1188] <... ioctl resumed>) = 0 [pid 1187] ioctl(7, LOOP_CLR_FD [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1184, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1191] <... futex resumed>) = 0 [pid 1190] <... futex resumed>) = 1 [pid 1183] <... futex resumed>) = 0 [pid 1187] <... ioctl resumed>) = 0 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1191] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1190] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1183] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... restart_syscall resumed>) = 0 [pid 1192] <... creat resumed>) = 3 [pid 1190] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1183] <... futex resumed>) = 0 [pid 1192] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1190] memfd_create("syzkaller", 0 [pid 1183] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1190] <... memfd_create resumed>) = 6 [pid 1192] <... futex resumed>) = 1 [pid 1191] <... futex resumed>) = 0 [pid 1190] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1192] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1191] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1190] <... mmap resumed>) = 0x7fe6f03b1000 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1192] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1191] <... futex resumed>) = 0 [pid 303] <... openat resumed>) = 3 [pid 1192] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1191] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1190] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1188] ioctl(7, LOOP_SET_FD, 6 [pid 1187] ioctl(7, LOOP_SET_FD, 6 [pid 303] ioctl(3, LOOP_CLR_FD [pid 1192] <... openat resumed>) = 4 [pid 1190] <... write resumed>) = 131072 [pid 1188] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1187] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] <... ioctl resumed>) = 0 [pid 1192] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1190] munmap(0x7fe6f03b1000, 138412032 [pid 1188] close(7 [pid 1187] close(7 [pid 1190] <... munmap resumed>) = 0 [pid 303] close(3 [pid 1192] <... futex resumed>) = 1 [pid 1191] <... futex resumed>) = 0 [pid 1190] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1188] <... close resumed>) = 0 [pid 1187] <... close resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 1192] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1191] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1190] <... openat resumed>) = 7 [pid 1188] close(6 [pid 1187] close(6 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1192] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1191] <... futex resumed>) = 0 [pid 1190] ioctl(7, LOOP_SET_FD, 6 [pid 1188] <... close resumed>) = 0 [pid 1187] <... close resumed>) = 0 [pid 1192] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1191] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1190] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1188] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1187] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1194 [pid 1192] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1190] ioctl(7, LOOP_CLR_FD [pid 1188] <... futex resumed>) = 1 [pid 1187] <... futex resumed>) = 1 [pid 1186] <... futex resumed>) = 0 [pid 1185] <... futex resumed>) = 0 [pid 1192] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1190] <... ioctl resumed>) = 0 [pid 1188] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1187] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1186] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1185] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1192] <... futex resumed>) = 1 [pid 1191] <... futex resumed>) = 0 [pid 1188] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1187] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1186] <... futex resumed>) = 0 [pid 1185] <... futex resumed>) = 0 [pid 1192] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1191] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1188] mknod(0x20000000, 000 [pid 1187] mknod(0x20000000, 000 [pid 1186] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1185] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1192] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1191] <... futex resumed>) = 0 [pid 1188] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1187] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1192] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1191] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1188] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1187] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1192] <... open resumed>) = 5 [pid 1188] <... futex resumed>) = 1 [pid 1190] ioctl(7, LOOP_SET_FD, 6 [pid 1187] <... futex resumed>) = 1 [pid 1186] <... futex resumed>) = 0 [pid 1185] <... futex resumed>) = 0 [pid 1192] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1190] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1188] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1187] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1186] exit_group(0 [pid 1185] exit_group(0 [pid 1192] <... futex resumed>) = 1 [pid 1191] <... futex resumed>) = 0 [pid 1190] close(7 [pid 1188] <... futex resumed>) = ? [pid 1187] <... futex resumed>) = ? [pid 1186] <... exit_group resumed>) = ? [pid 1185] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 1194 attached [pid 1192] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1191] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1190] <... close resumed>) = 0 [pid 1188] +++ exited with 0 +++ [pid 1187] +++ exited with 0 +++ [pid 1186] +++ exited with 0 +++ [pid 1185] +++ exited with 0 +++ [pid 1192] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1192] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1185, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1192] <... mmap resumed>) = 0x20000000 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 1192] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1192] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL) = 0 [pid 1191] <... futex resumed>) = 1 [pid 1190] close(6 [pid 1194] set_robust_list(0x5555636e06a0, 24 [pid 1192] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1191] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1194] <... set_robust_list resumed>) = 0 [pid 1191] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1190] <... close resumed>) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1186, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1194] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1191] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1190] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 1194] <... prctl resumed>) = 0 [pid 1192] <... futex resumed>) = 0 [pid 1191] <... futex resumed>) = 1 [pid 1190] <... futex resumed>) = 1 [pid 1183] <... futex resumed>) = 0 [pid 1192] memfd_create("syzkaller", 0 [pid 1191] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1190] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1183] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1194] setpgid(0, 0 [pid 1192] <... memfd_create resumed>) = 6 [pid 1190] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1183] <... futex resumed>) = 0 [pid 1194] <... setpgid resumed>) = 0 [pid 1192] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1190] mknod(0x20000000, 000 [pid 1183] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1192] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1190] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1194] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1192] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1190] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... restart_syscall resumed>) = 0 [pid 1194] <... openat resumed>) = 3 [pid 1192] <... write resumed>) = 131072 [pid 1190] <... futex resumed>) = 1 [pid 1183] <... futex resumed>) = 0 [pid 1194] write(3, "1000", 4 [pid 1192] munmap(0x7fe6f03b1000, 138412032 [pid 1190] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1183] exit_group(0 [pid 1194] <... write resumed>) = 4 [pid 1192] <... munmap resumed>) = 0 [pid 1190] <... futex resumed>) = ? [pid 1183] <... exit_group resumed>) = ? [pid 1194] close(3 [pid 1192] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1190] +++ exited with 0 +++ [pid 1192] <... openat resumed>) = 7 [pid 1192] ioctl(7, LOOP_SET_FD, 6 [pid 1183] +++ exited with 0 +++ [pid 1194] <... close resumed>) = 0 [pid 1192] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) executing program [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1183, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1194] write(1, "executing program\n", 18 [pid 1192] ioctl(7, LOOP_CLR_FD [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 1194] <... write resumed>) = 18 [pid 1192] <... ioctl resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 1194] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] ioctl(3, LOOP_CLR_FD [pid 1194] <... futex resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 1194] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 302] close(3 [pid 1194] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1194] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 302] <... close resumed>) = 0 [pid 1194] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1194] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0./strace-static-x86_64: Process 1195 attached ) = 0x7fe6f87b1000 [pid 1195] set_robust_list(0x5555636e06a0, 24 [pid 1194] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1195 [pid 1195] <... set_robust_list resumed>) = 0 [pid 1194] <... mprotect resumed>) = 0 [pid 1195] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1194] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1195] <... prctl resumed>) = 0 [pid 1194] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1195] setpgid(0, 0 [pid 1194] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1192] ioctl(7, LOOP_SET_FD, 6 [pid 306] <... restart_syscall resumed>) = 0 [pid 1195] <... setpgid resumed>) = 0 [pid 1192] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] <... restart_syscall resumed>) = 0 [pid 1195] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1194] <... clone3 resumed> => {parent_tid=[1196]}, 88) = 1196 [pid 1195] <... openat resumed>) = 3 [pid 1194] rt_sigprocmask(SIG_SETMASK, [], [pid 1192] close(7 [pid 1195] write(3, "1000", 4 [pid 1194] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1195] <... write resumed>) = 4 [pid 1194] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1192] <... close resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1195] close(3 [pid 1194] <... futex resumed>) = 0 [pid 1192] close(6 [pid 1195] <... close resumed>) = 0 [pid 1194] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 306] <... openat resumed>) = 3 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1195] write(1, "executing program\n", 18) = 18 [pid 1195] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1192] <... close resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD executing program [pid 1195] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 304] <... openat resumed>) = 3 [pid 306] <... ioctl resumed>) = 0 [pid 1192] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] ioctl(3, LOOP_CLR_FD [pid 306] close(3 [pid 1195] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1192] <... futex resumed>) = 1 [pid 1191] <... futex resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 1195] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1192] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1191] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... close resumed>) = 0 [pid 304] close(3 [pid 1195] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1192] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1191] <... futex resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1195] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1192] mknod(0x20000000, 000 [pid 1191] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... close resumed>) = 0 [pid 1195] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1195] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1195] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1192] <... mknod resumed>) = -1 EEXIST (File exists) [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1192] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1197 [pid 1195] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1195] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1192] <... futex resumed>) = 1 [pid 1191] <... futex resumed>) = 0 [pid 1195] <... clone3 resumed> => {parent_tid=[1199]}, 88) = 1199 [pid 1192] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1191] exit_group(0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1198 [pid 1195] rt_sigprocmask(SIG_SETMASK, [], [pid 1192] <... futex resumed>) = ? [pid 1191] <... exit_group resumed>) = ? [pid 1195] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1192] +++ exited with 0 +++ [pid 1191] +++ exited with 0 +++ [pid 1195] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1191, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1195] <... futex resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1195] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1196 attached [pid 1196] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1196] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1196] memfd_create("syzkaller", 0) = 3 [pid 1196] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1196] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 ./strace-static-x86_64: Process 1199 attached [pid 1199] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1199] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1199] memfd_create("syzkaller", 0) = 3 [pid 1199] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1199] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1196] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1196] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 1196] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1196] ioctl(4, LOOP_CLR_FD) = 0 [pid 1199] <... write resumed>) = 262144 [pid 1199] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1199] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1196] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1196] close(4) = 0 [pid 1196] close(3) = 0 [pid 1196] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1194] <... futex resumed>) = 0 [pid 1194] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1194] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1196] <... futex resumed>) = 1 [pid 1196] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 1196] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1194] <... futex resumed>) = 0 [pid 1194] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1194] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... restart_syscall resumed>) = 0 [pid 1196] <... futex resumed>) = 1 [pid 1196] creat("./bus", 000 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 1196] <... creat resumed>) = 3 [pid 1196] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] ioctl(3, LOOP_CLR_FD [pid 1194] <... futex resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 1194] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 305] close(3 [pid 1194] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... close resumed>) = 0 [pid 1196] <... futex resumed>) = 1 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1196] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 1196] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1194] <... futex resumed>) = 0 [pid 1194] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1200 ./strace-static-x86_64: Process 1200 attached ./strace-static-x86_64: Process 1198 attached ./strace-static-x86_64: Process 1197 attached [pid 1194] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1196] <... futex resumed>) = 1 [pid 1196] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL) = -1 ENOSPC (No space left on device) [pid 1196] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1194] <... futex resumed>) = 0 [pid 1194] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1194] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1196] <... futex resumed>) = 1 [pid 1196] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1198] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1196] <... open resumed>) = 5 [pid 1196] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1194] <... futex resumed>) = 0 [pid 1194] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1194] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1196] <... futex resumed>) = 1 [pid 1196] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 1196] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1194] <... futex resumed>) = 0 [pid 1198] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1194] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1194] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1196] <... futex resumed>) = 1 [pid 1198] <... prctl resumed>) = 0 [pid 1196] memfd_create("syzkaller", 0 [pid 1197] set_robust_list(0x5555636e06a0, 24 [pid 1198] setpgid(0, 0 [pid 1196] <... memfd_create resumed>) = 6 [pid 1196] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1200] set_robust_list(0x5555636e06a0, 24 [pid 1198] <... setpgid resumed>) = 0 [pid 1197] <... set_robust_list resumed>) = 0 [pid 1196] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1199] <... openat resumed>) = 4 [pid 1199] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1199] ioctl(4, LOOP_CLR_FD) = 0 [pid 1196] <... write resumed>) = 131072 [pid 1198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1196] munmap(0x7fe6f03b1000, 138412032 [pid 1198] <... openat resumed>) = 3 [pid 1197] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1196] <... munmap resumed>) = 0 [pid 1196] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 7 [pid 1196] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1196] ioctl(7, LOOP_CLR_FD) = 0 [pid 1198] write(3, "1000", 4 [pid 1197] <... prctl resumed>) = 0 executing program [pid 1197] setpgid(0, 0 [pid 1200] <... set_robust_list resumed>) = 0 [pid 1198] <... write resumed>) = 4 [pid 1197] <... setpgid resumed>) = 0 [pid 1198] close(3 [pid 1199] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1197] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1198] <... close resumed>) = 0 [pid 1199] close(4) = 0 [pid 1198] write(1, "executing program\n", 18 [pid 1197] <... openat resumed>) = 3 [pid 1199] close(3 [pid 1200] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1198] <... write resumed>) = 18 [pid 1197] write(3, "1000", 4 [pid 1200] <... prctl resumed>) = 0 [pid 1199] <... close resumed>) = 0 [pid 1198] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1197] <... write resumed>) = 4 [pid 1199] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1195] <... futex resumed>) = 0 [pid 1195] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1195] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1199] <... futex resumed>) = 1 [pid 1199] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 1199] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1195] <... futex resumed>) = 0 [pid 1195] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1195] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1199] <... futex resumed>) = 1 [pid 1199] creat("./bus", 000) = 3 [pid 1199] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1198] <... futex resumed>) = 0 [pid 1197] close(3 [pid 1200] setpgid(0, 0 [pid 1198] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1197] <... close resumed>) = 0 [pid 1199] <... futex resumed>) = 1 [pid 1195] <... futex resumed>) = 0 [pid 1199] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1195] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 1199] <... openat resumed>) = 4 [pid 1195] <... futex resumed>) = 0 [pid 1200] <... setpgid resumed>) = 0 [pid 1199] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1198] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1197] write(1, "executing program\n", 18 [pid 1195] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1199] <... futex resumed>) = 0 [pid 1198] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1197] <... write resumed>) = 18 [pid 1195] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1200] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1199] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1198] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1197] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1195] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1200] <... openat resumed>) = 3 [pid 1199] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1198] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1197] <... futex resumed>) = 0 [pid 1195] <... futex resumed>) = 0 [pid 1200] write(3, "1000", 4 [pid 1199] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1198] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1197] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1195] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1200] <... write resumed>) = 4 [pid 1199] <... futex resumed>) = 0 [pid 1198] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1197] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1196] ioctl(7, LOOP_SET_FD, 6 [pid 1195] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1199] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1196] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1198] <... mprotect resumed>) = 0 [pid 1195] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1200] close(3 [pid 1199] <... open resumed>) = 5 [pid 1197] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1196] close(7 [pid 1195] <... futex resumed>) = 0 [pid 1200] <... close resumed>) = 0 [pid 1199] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1198] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1197] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1196] <... close resumed>) = 0 [pid 1195] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1200] write(1, "executing program\n", 18 [pid 1199] <... futex resumed>) = 0 [pid 1198] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1197] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1196] close(6 [pid 1195] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) executing program [pid 1200] <... write resumed>) = 18 [pid 1199] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1198] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1197] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1196] <... close resumed>) = 0 [pid 1195] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1200] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1199] <... mmap resumed>) = 0x20000000 [pid 1197] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1196] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1195] <... futex resumed>) = 0 [pid 1200] <... futex resumed>) = 0 [pid 1199] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1198] <... clone3 resumed> => {parent_tid=[1201]}, 88) = 1201 [pid 1197] <... mprotect resumed>) = 0 [pid 1196] <... futex resumed>) = 1 [pid 1195] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1194] <... futex resumed>) = 0 [pid 1200] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1199] <... futex resumed>) = 0 [pid 1196] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1195] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1194] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1200] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1199] memfd_create("syzkaller", 0 [pid 1198] rt_sigprocmask(SIG_SETMASK, [], [pid 1197] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1196] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1195] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1194] <... futex resumed>) = 0 [pid 1200] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1199] <... memfd_create resumed>) = 6 [pid 1198] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1197] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1196] mknod(0x20000000, 000 [pid 1195] <... futex resumed>) = 0 [pid 1194] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1200] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1199] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1198] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1197] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1196] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1195] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1200] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1199] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1198] <... futex resumed>) = 0 [pid 1196] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1200] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1199] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1198] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1200] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1197] <... clone3 resumed> => {parent_tid=[1202]}, 88) = 1202 [pid 1200] <... mprotect resumed>) = 0 [pid 1197] rt_sigprocmask(SIG_SETMASK, [], [pid 1200] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1199] <... write resumed>) = 131072 [pid 1197] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1196] <... futex resumed>) = 1 [pid 1194] <... futex resumed>) = 0 [pid 1200] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1199] munmap(0x7fe6f03b1000, 138412032 [pid 1197] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1196] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1194] exit_group(0 [pid 1200] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1199] <... munmap resumed>) = 0 [pid 1197] <... futex resumed>) = 0 [pid 1196] <... futex resumed>) = ? [pid 1194] <... exit_group resumed>) = ? [pid 1199] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1197] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1196] +++ exited with 0 +++ [pid 1194] +++ exited with 0 +++ [pid 1200] <... clone3 resumed> => {parent_tid=[1203]}, 88) = 1203 [pid 1200] rt_sigprocmask(SIG_SETMASK, [], [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1194, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1200] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1200] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1199] <... openat resumed>) = 7 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1200] <... futex resumed>) = 0 [pid 1200] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1199] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1199] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1201 attached [pid 1201] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1201] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1201] memfd_create("syzkaller", 0) = 3 [pid 1201] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 303] <... restart_syscall resumed>) = 0 [pid 1199] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1199] close(7) = 0 [pid 1199] close(6) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1199] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... openat resumed>) = 3 [pid 1199] <... futex resumed>) = 1 [pid 1195] <... futex resumed>) = 0 [pid 303] ioctl(3, LOOP_CLR_FD [pid 1199] mknod(0x20000000, 000 [pid 1195] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... ioctl resumed>) = 0 [pid 1199] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1195] <... futex resumed>) = 0 [pid 303] close(3 [pid 1199] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1195] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1201] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1199] <... futex resumed>) = 0 [pid 1195] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 303] <... close resumed>) = 0 [pid 1199] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1195] exit_group(0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1199] <... futex resumed>) = ? [pid 1195] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 1202 attached [pid 1199] +++ exited with 0 +++ [pid 1195] +++ exited with 0 +++ [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1204 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1195, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 1202] set_robust_list(0x7fe6f87d19a0, 24 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 302] ioctl(3, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1203 attached [pid 302] close(3 [pid 1203] set_robust_list(0x7fe6f87d19a0, 24 [pid 302] <... close resumed>) = 0 [pid 1203] <... set_robust_list resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1203] rt_sigprocmask(SIG_SETMASK, [], [pid 1202] <... set_robust_list resumed>) = 0 [pid 1203] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1205 ./strace-static-x86_64: Process 1205 attached ./strace-static-x86_64: Process 1204 attached [pid 1203] memfd_create("syzkaller", 0 [pid 1202] rt_sigprocmask(SIG_SETMASK, [], [pid 1201] <... write resumed>) = 262144 [pid 1205] set_robust_list(0x5555636e06a0, 24 [pid 1204] set_robust_list(0x5555636e06a0, 24 [pid 1203] <... memfd_create resumed>) = 3 [pid 1202] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1201] munmap(0x7fe6f03b1000, 138412032 [pid 1205] <... set_robust_list resumed>) = 0 [pid 1204] <... set_robust_list resumed>) = 0 [pid 1203] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1202] memfd_create("syzkaller", 0 [pid 1201] <... munmap resumed>) = 0 [pid 1205] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1204] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1203] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1202] <... memfd_create resumed>) = 3 [pid 1201] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1205] <... prctl resumed>) = 0 [pid 1204] <... prctl resumed>) = 0 [pid 1202] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1201] <... openat resumed>) = 4 [pid 1205] setpgid(0, 0 [pid 1204] setpgid(0, 0 [pid 1203] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1202] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1201] ioctl(4, LOOP_SET_FD, 3 [pid 1205] <... setpgid resumed>) = 0 [pid 1204] <... setpgid resumed>) = 0 [pid 1203] <... write resumed>) = 262144 [pid 1202] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1201] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1205] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1204] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1203] munmap(0x7fe6f03b1000, 138412032 [pid 1202] <... write resumed>) = 262144 [pid 1201] ioctl(4, LOOP_CLR_FD [pid 1205] <... openat resumed>) = 3 [pid 1204] <... openat resumed>) = 3 [pid 1203] <... munmap resumed>) = 0 [pid 1202] munmap(0x7fe6f03b1000, 138412032 [pid 1201] <... ioctl resumed>) = 0 [pid 1205] write(3, "1000", 4 [pid 1204] write(3, "1000", 4 [pid 1202] <... munmap resumed>) = 0 [pid 1205] <... write resumed>) = 4 [pid 1204] <... write resumed>) = 4 [pid 1202] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1205] close(3 [pid 1204] close(3 [pid 1202] <... openat resumed>) = 4 [pid 1205] <... close resumed>) = 0 [pid 1204] <... close resumed>) = 0 [pid 1202] ioctl(4, LOOP_SET_FD, 3executing program [pid 1205] write(1, "executing program\n", 18executing program [pid 1204] write(1, "executing program\n", 18 [pid 1202] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1205] <... write resumed>) = 18 [pid 1204] <... write resumed>) = 18 [pid 1202] ioctl(4, LOOP_CLR_FD [pid 1205] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1204] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1203] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1202] <... ioctl resumed>) = 0 [pid 1201] ioctl(4, LOOP_SET_FD, 3 [pid 1205] <... futex resumed>) = 0 [pid 1204] <... futex resumed>) = 0 [pid 1203] <... openat resumed>) = 4 [pid 1201] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1205] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1204] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1203] ioctl(4, LOOP_SET_FD, 3 [pid 1201] close(4 [pid 1205] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1204] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1203] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1201] <... close resumed>) = 0 [pid 1205] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1204] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1203] ioctl(4, LOOP_CLR_FD [pid 1201] close(3 [pid 1205] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1204] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1203] <... ioctl resumed>) = 0 [pid 1202] ioctl(4, LOOP_SET_FD, 3 [pid 1201] <... close resumed>) = 0 [pid 1205] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1204] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1202] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1201] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1205] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1204] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1202] close(4 [pid 1201] <... futex resumed>) = 1 [pid 1198] <... futex resumed>) = 0 [pid 1205] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1204] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1202] <... close resumed>) = 0 [pid 1201] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1198] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1205] <... mprotect resumed>) = 0 [pid 1204] <... mprotect resumed>) = 0 [pid 1202] close(3 [pid 1201] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1198] <... futex resumed>) = 0 [pid 1205] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1204] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1202] <... close resumed>) = 0 [pid 1201] chdir("./file0" [pid 1198] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1205] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1204] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1202] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1201] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1205] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1204] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1202] <... futex resumed>) = 1 [pid 1201] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1197] <... futex resumed>) = 0 [pid 1202] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1201] <... futex resumed>) = 1 [pid 1198] <... futex resumed>) = 0 [pid 1197] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1205] <... clone3 resumed> => {parent_tid=[1206]}, 88) = 1206 [pid 1204] <... clone3 resumed> => {parent_tid=[1207]}, 88) = 1207 [pid 1203] ioctl(4, LOOP_SET_FD, 3 [pid 1202] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1201] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1198] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1197] <... futex resumed>) = 0 [pid 1205] rt_sigprocmask(SIG_SETMASK, [], [pid 1204] rt_sigprocmask(SIG_SETMASK, [], [pid 1203] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1202] chdir("./file0" [pid 1201] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1198] <... futex resumed>) = 0 [pid 1197] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1205] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1204] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1203] close(4 [pid 1202] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1201] creat("./bus", 000 [pid 1198] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1205] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1204] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1203] <... close resumed>) = 0 [pid 1202] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1201] <... creat resumed>) = 3 [pid 1205] <... futex resumed>) = 0 [pid 1204] <... futex resumed>) = 0 [pid 1203] close(3 [pid 1202] <... futex resumed>) = 1 [pid 1201] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1197] <... futex resumed>) = 0 [pid 1205] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1204] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1202] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1201] <... futex resumed>) = 1 [pid 1198] <... futex resumed>) = 0 [pid 1197] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1202] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1201] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1198] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1197] <... futex resumed>) = 0 [pid 1202] creat("./bus", 000 [pid 1201] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1198] <... futex resumed>) = 0 [pid 1197] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1203] <... close resumed>) = 0 [pid 1202] <... creat resumed>) = 3 [pid 1201] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1198] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1203] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1202] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1201] <... openat resumed>) = 4 [pid 1203] <... futex resumed>) = 1 [pid 1202] <... futex resumed>) = 1 [pid 1201] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1200] <... futex resumed>) = 0 [pid 1197] <... futex resumed>) = 0 [pid 1203] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1202] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1201] <... futex resumed>) = 1 [pid 1200] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1198] <... futex resumed>) = 0 [pid 1197] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1203] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1202] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1201] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1200] <... futex resumed>) = 0 [pid 1198] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1197] <... futex resumed>) = 0 [pid 1203] chdir("./file0" [pid 1202] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1201] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1200] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1198] <... futex resumed>) = 0 [pid 1197] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1203] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1202] <... openat resumed>) = 4 [pid 1201] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1198] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1203] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1202] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1203] <... futex resumed>) = 1 [pid 1202] <... futex resumed>) = 1 [pid 1200] <... futex resumed>) = 0 [pid 1197] <... futex resumed>) = 0 [pid 1203] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1202] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1200] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1197] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1203] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1202] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1200] <... futex resumed>) = 0 [pid 1197] <... futex resumed>) = 0 [pid 1203] creat("./bus", 000 [pid 1202] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1200] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1197] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1203] <... creat resumed>) = 3 [pid 1203] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1200] <... futex resumed>) = 0 [pid 1203] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1200] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1203] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1200] <... futex resumed>) = 0 [pid 1203] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1200] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1203] <... openat resumed>) = 4 [pid 1203] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1200] <... futex resumed>) = 0 [pid 1203] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1200] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1203] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1200] <... futex resumed>) = 0 [pid 1203] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1200] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1202] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1201] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1203] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1202] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1201] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1203] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1202] <... futex resumed>) = 1 [pid 1201] <... futex resumed>) = 1 [pid 1198] <... futex resumed>) = 0 [pid 1197] <... futex resumed>) = 0 [pid 1203] <... futex resumed>) = 1 [pid 1202] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1201] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1200] <... futex resumed>) = 0 [pid 1198] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1197] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1203] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1202] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1201] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1200] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1198] <... futex resumed>) = 0 [pid 1197] <... futex resumed>) = 0 [pid 1203] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1202] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1201] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1200] <... futex resumed>) = 0 [pid 1198] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1197] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1203] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1202] <... open resumed>) = 5 [pid 1201] <... open resumed>) = 5 [pid 1200] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1203] <... open resumed>) = 5 [pid 1202] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1201] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1203] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1202] <... futex resumed>) = 1 [pid 1201] <... futex resumed>) = 1 [pid 1198] <... futex resumed>) = 0 [pid 1197] <... futex resumed>) = 0 [pid 1203] <... futex resumed>) = 1 [pid 1202] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1201] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1200] <... futex resumed>) = 0 [pid 1198] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1197] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1203] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1202] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1201] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1200] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1198] <... futex resumed>) = 0 [pid 1197] <... futex resumed>) = 0 [pid 1203] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1202] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1201] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1200] <... futex resumed>) = 0 [pid 1198] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1197] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1203] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1202] <... mmap resumed>) = 0x20000000 [pid 1201] <... mmap resumed>) = 0x20000000 [pid 1200] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1202] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1201] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1203] <... mmap resumed>) = 0x20000000 [pid 1202] <... futex resumed>) = 1 [pid 1201] <... futex resumed>) = 1 [pid 1198] <... futex resumed>) = 0 [pid 1197] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1207 attached ./strace-static-x86_64: Process 1206 attached [pid 1203] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1202] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1201] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1198] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1197] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1203] <... futex resumed>) = 1 [pid 1202] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1201] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1200] <... futex resumed>) = 0 [pid 1198] <... futex resumed>) = 0 [pid 1197] <... futex resumed>) = 0 [pid 1203] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1202] memfd_create("syzkaller", 0 [pid 1201] memfd_create("syzkaller", 0 [pid 1200] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1198] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1197] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1203] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1202] <... memfd_create resumed>) = 6 [pid 1201] <... memfd_create resumed>) = 6 [pid 1200] <... futex resumed>) = 0 [pid 1203] memfd_create("syzkaller", 0 [pid 1202] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1201] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1200] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1203] <... memfd_create resumed>) = 6 [pid 1202] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1201] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1207] set_robust_list(0x7fe6f87d19a0, 24 [pid 1206] set_robust_list(0x7fe6f87d19a0, 24 [pid 1203] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1202] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1201] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1207] <... set_robust_list resumed>) = 0 [pid 1206] <... set_robust_list resumed>) = 0 [pid 1203] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1202] <... write resumed>) = 131072 [pid 1201] <... write resumed>) = 131072 [pid 1202] munmap(0x7fe6f03b1000, 138412032 [pid 1201] munmap(0x7fe6f03b1000, 138412032 [pid 1202] <... munmap resumed>) = 0 [pid 1201] <... munmap resumed>) = 0 [pid 1202] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1201] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1207] rt_sigprocmask(SIG_SETMASK, [], [pid 1206] rt_sigprocmask(SIG_SETMASK, [], [pid 1203] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1202] <... openat resumed>) = 7 [pid 1201] <... openat resumed>) = 7 [pid 1202] ioctl(7, LOOP_SET_FD, 6 [pid 1201] ioctl(7, LOOP_SET_FD, 6 [pid 1202] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1201] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1202] ioctl(7, LOOP_CLR_FD [pid 1201] ioctl(7, LOOP_CLR_FD [pid 1202] <... ioctl resumed>) = 0 [pid 1201] <... ioctl resumed>) = 0 [pid 1207] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1206] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1203] <... write resumed>) = 131072 [pid 1202] ioctl(7, LOOP_SET_FD, 6 [pid 1201] ioctl(7, LOOP_SET_FD, 6 [pid 1202] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1201] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1202] close(7 [pid 1201] close(7 [pid 1202] <... close resumed>) = 0 [pid 1201] <... close resumed>) = 0 [pid 1207] memfd_create("syzkaller", 0 [pid 1206] memfd_create("syzkaller", 0 [pid 1203] munmap(0x7fe6f03b1000, 138412032 [pid 1202] close(6 [pid 1201] close(6 [pid 1207] <... memfd_create resumed>) = 3 [pid 1206] <... memfd_create resumed>) = 3 [pid 1203] <... munmap resumed>) = 0 [pid 1202] <... close resumed>) = 0 [pid 1201] <... close resumed>) = 0 [pid 1207] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1202] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1201] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1202] <... futex resumed>) = 1 [pid 1201] <... futex resumed>) = 1 [pid 1198] <... futex resumed>) = 0 [pid 1197] <... futex resumed>) = 0 [pid 1202] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1201] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1198] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1197] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1207] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1206] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1203] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1202] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1201] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1198] <... futex resumed>) = 0 [pid 1197] <... futex resumed>) = 0 [pid 1206] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1203] <... openat resumed>) = 7 [pid 1202] mknod(0x20000000, 000 [pid 1201] mknod(0x20000000, 000 [pid 1198] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1197] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1207] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1203] ioctl(7, LOOP_SET_FD, 6 [pid 1202] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1201] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1202] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1201] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1202] <... futex resumed>) = 1 [pid 1201] <... futex resumed>) = 1 [pid 1198] <... futex resumed>) = 0 [pid 1197] <... futex resumed>) = 0 [pid 1202] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1201] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1198] exit_group(0 [pid 1197] exit_group(0 [pid 1206] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1203] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1202] <... futex resumed>) = ? [pid 1201] <... futex resumed>) = ? [pid 1198] <... exit_group resumed>) = ? [pid 1197] <... exit_group resumed>) = ? [pid 1206] <... write resumed>) = 262144 [pid 1203] ioctl(7, LOOP_CLR_FD [pid 1202] +++ exited with 0 +++ [pid 1201] +++ exited with 0 +++ [pid 1198] +++ exited with 0 +++ [pid 1197] +++ exited with 0 +++ [pid 1206] munmap(0x7fe6f03b1000, 138412032 [pid 1203] <... ioctl resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1197, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1198, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1207] <... write resumed>) = 262144 [pid 1206] <... munmap resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 306] <... openat resumed>) = 3 [pid 304] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 304] ioctl(3, LOOP_CLR_FD [pid 306] <... ioctl resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 306] close(3 [pid 304] close(3 [pid 306] <... close resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1207] munmap(0x7fe6f03b1000, 138412032 [pid 1206] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1203] ioctl(7, LOOP_SET_FD, 6 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1208 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1209 [pid 1203] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1203] close(7 [pid 1207] <... munmap resumed>) = 0 [pid 1206] <... openat resumed>) = 4 [pid 1203] <... close resumed>) = 0 ./strace-static-x86_64: Process 1209 attached [pid 1203] close(6 [pid 1209] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1209] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1209] setpgid(0, 0 [pid 1206] ioctl(4, LOOP_SET_FD, 3 [pid 1203] <... close resumed>) = 0 [pid 1209] <... setpgid resumed>) = 0 [pid 1206] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1203] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1207] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1206] ioctl(4, LOOP_CLR_FD [pid 1203] <... futex resumed>) = 1 [pid 1200] <... futex resumed>) = 0 [pid 1206] <... ioctl resumed>) = 0 [pid 1203] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1200] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1207] <... openat resumed>) = 4 [pid 1203] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1200] <... futex resumed>) = 0 [pid 1203] mknod(0x20000000, 000 [pid 1207] ioctl(4, LOOP_SET_FD, 3 [pid 1200] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1203] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1207] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1203] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1209] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1207] ioctl(4, LOOP_CLR_FD [pid 1203] <... futex resumed>) = 1 [pid 1200] <... futex resumed>) = 0 [pid 1209] <... openat resumed>) = 3 [pid 1207] <... ioctl resumed>) = 0 [pid 1203] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1200] exit_group(0executing program ) = ? [pid 1203] <... futex resumed>) = 230 [pid 1209] write(3, "1000", 4) = 4 [pid 1209] close(3) = 0 [pid 1209] write(1, "executing program\n", 18) = 18 [pid 1209] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1209] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1209] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1209] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 ./strace-static-x86_64: Process 1208 attached [pid 1203] +++ exited with 0 +++ [pid 1200] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1200, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1209] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1208] set_robust_list(0x5555636e06a0, 24 [pid 1209] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1206] ioctl(4, LOOP_SET_FD, 3 [pid 1207] ioctl(4, LOOP_SET_FD, 3 [pid 1208] <... set_robust_list resumed>) = 0 [pid 1208] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1209] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1208] <... prctl resumed>) = 0 [pid 1206] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1207] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1209] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1207] close(4 [pid 1206] close(4 [pid 1207] <... close resumed>) = 0 [pid 1208] setpgid(0, 0) = 0 [pid 1208] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1207] close(3 [pid 1206] <... close resumed>) = 0 [pid 1209] <... clone3 resumed> => {parent_tid=[1210]}, 88) = 1210 [pid 1209] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1209] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1208] <... openat resumed>) = 3 [pid 1209] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1208] write(3, "1000", 4) = 4 [pid 1207] <... close resumed>) = 0 [pid 1206] close(3 [pid 1208] close(3 [pid 305] <... restart_syscall resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 305] ioctl(3, LOOP_CLR_FD) = 0 [pid 305] close(3) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1207] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1206] <... close resumed>) = 0 [pid 1207] <... futex resumed>) = 1 [pid 1206] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1204] <... futex resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1211 [pid 1208] <... close resumed>) = 0 [pid 1204] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 1208] write(1, "executing program\n", 18 [pid 1204] <... futex resumed>) = 0 [pid 1207] chdir("./file0" [pid 1206] <... futex resumed>) = 1 [pid 1205] <... futex resumed>) = 0 [pid 1208] <... write resumed>) = 18 [pid 1207] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1206] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1205] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1204] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1208] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1207] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1206] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1205] <... futex resumed>) = 0 [pid 1204] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1208] <... futex resumed>) = 0 [pid 1207] <... futex resumed>) = 0 [pid 1206] chdir("./file0" [pid 1205] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1204] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1208] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1207] creat("./bus", 000 [pid 1206] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1204] <... futex resumed>) = 0 [pid 1208] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1204] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1208] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1207] <... creat resumed>) = 3 [pid 1206] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1207] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1206] <... futex resumed>) = 1 [pid 1205] <... futex resumed>) = 0 [pid 1207] <... futex resumed>) = 1 [pid 1206] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1205] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1204] <... futex resumed>) = 0 [pid 1207] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1206] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1205] <... futex resumed>) = 0 [pid 1204] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1205] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1204] <... futex resumed>) = 0 [pid 1207] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1206] creat("./bus", 000 [pid 1204] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1207] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1208] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1206] <... creat resumed>) = 3 [pid 1208] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1208] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1207] <... openat resumed>) = 4 [pid 1206] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1207] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1206] <... futex resumed>) = 1 [pid 1205] <... futex resumed>) = 0 [pid 1207] <... futex resumed>) = 1 [pid 1206] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1205] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1204] <... futex resumed>) = 0 [pid 1207] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1206] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1205] <... futex resumed>) = 0 [pid 1204] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1207] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1206] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1205] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1204] <... futex resumed>) = 0 [pid 1207] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1204] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1206] <... openat resumed>) = 4 [pid 1208] <... mprotect resumed>) = 0 [pid 1208] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1207] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1206] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1208] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1207] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1208] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1206] <... futex resumed>) = 1 [pid 1205] <... futex resumed>) = 0 [pid 1204] <... futex resumed>) = 0 [pid 1207] <... futex resumed>) = 1 [pid 1206] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1205] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1204] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1208] <... clone3 resumed> => {parent_tid=[1212]}, 88) = 1212 [pid 1207] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1206] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1205] <... futex resumed>) = 0 [pid 1204] <... futex resumed>) = 0 [pid 1208] rt_sigprocmask(SIG_SETMASK, [], [pid 1206] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1205] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1204] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1208] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1207] <... open resumed>) = 5 [pid 1208] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1206] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1207] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1208] <... futex resumed>) = 0 [pid 1206] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1208] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1207] <... futex resumed>) = 1 [pid 1204] <... futex resumed>) = 0 [pid 1205] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1211 attached [pid 1207] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1206] <... futex resumed>) = 1 [pid 1205] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1204] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1207] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1206] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1205] <... futex resumed>) = 0 [pid 1204] <... futex resumed>) = 0 [pid 1207] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1205] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1204] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1206] <... open resumed>) = 5 [pid 1211] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1211] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1207] <... mmap resumed>) = 0x20000000 [pid 1206] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1207] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1206] <... futex resumed>) = 1 [pid 1205] <... futex resumed>) = 0 [pid 1207] <... futex resumed>) = 1 [pid 1206] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1205] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1204] <... futex resumed>) = 0 [pid 1207] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1206] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1205] <... futex resumed>) = 0 [pid 1204] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1205] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1204] <... futex resumed>) = 0 [pid 1207] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1206] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1204] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1207] memfd_create("syzkaller", 0 [pid 1211] <... prctl resumed>) = 0 [pid 1211] setpgid(0, 0) = 0 [pid 1206] <... mmap resumed>) = 0x20000000 [pid 1211] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1207] <... memfd_create resumed>) = 6 [pid 1206] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1207] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1211] <... openat resumed>) = 3 executing program [pid 1207] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1206] <... futex resumed>) = 1 [pid 1205] <... futex resumed>) = 0 [pid 1211] write(3, "1000", 4 [pid 1205] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1206] memfd_create("syzkaller", 0 [pid 1205] <... futex resumed>) = 0 [pid 1211] <... write resumed>) = 4 [pid 1205] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1206] <... memfd_create resumed>) = 6 [pid 1211] close(3) = 0 [pid 1211] write(1, "executing program\n", 18) = 18 [pid 1211] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1211] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1211] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1211] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1211] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1211] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1211] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1207] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1206] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1211] <... clone3 resumed> => {parent_tid=[1213]}, 88) = 1213 [pid 1206] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1211] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1211] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1211] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1212 attached [pid 1212] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1207] <... write resumed>) = 131072 [pid 1212] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1212] memfd_create("syzkaller", 0) = 3 [pid 1212] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1207] munmap(0x7fe6f03b1000, 138412032 [pid 1206] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1212] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1207] <... munmap resumed>) = 0 [pid 1206] <... write resumed>) = 131072 [pid 1207] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1206] munmap(0x7fe6f03b1000, 138412032 [pid 1212] <... write resumed>) = 262144 [pid 1207] <... openat resumed>) = 7 [pid 1206] <... munmap resumed>) = 0 [pid 1212] munmap(0x7fe6f03b1000, 138412032 [pid 1207] ioctl(7, LOOP_SET_FD, 6 [pid 1206] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1212] <... munmap resumed>) = 0 [pid 1212] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 1207] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1206] <... openat resumed>) = 7 [pid 1207] ioctl(7, LOOP_CLR_FD) = 0 [pid 1206] ioctl(7, LOOP_SET_FD, 6./strace-static-x86_64: Process 1210 attached ) = -1 EBUSY (Device or resource busy) [pid 1212] ioctl(4, LOOP_SET_FD, 3 [pid 1206] ioctl(7, LOOP_CLR_FD [pid 1212] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1206] <... ioctl resumed>) = 0 [pid 1212] ioctl(4, LOOP_CLR_FD) = 0 [pid 1210] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1207] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1207] close(7) = 0 [pid 1210] rt_sigprocmask(SIG_SETMASK, [], [pid 1206] ioctl(7, LOOP_SET_FD, 6 [pid 1210] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1207] close(6 [pid 1206] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1210] memfd_create("syzkaller", 0 [pid 1207] <... close resumed>) = 0 [pid 1206] close(7 [pid 1207] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1206] <... close resumed>) = 0 [pid 1207] <... futex resumed>) = 1 [pid 1206] close(6 [pid 1204] <... futex resumed>) = 0 [pid 1210] <... memfd_create resumed>) = 3 [pid 1204] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1207] mknod(0x20000000, 000 [pid 1204] <... futex resumed>) = 0 [pid 1207] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1204] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1207] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1204] <... futex resumed>) = 0 [pid 1207] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1204] exit_group(0 [pid 1206] <... close resumed>) = 0 [pid 1210] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1206] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1204] <... exit_group resumed>) = ? [pid 1205] <... futex resumed>) = 0 [pid 1207] <... futex resumed>) = ? [pid 1210] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1207] +++ exited with 0 +++ [pid 1206] <... futex resumed>) = 1 [pid 1205] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1204] +++ exited with 0 +++ [pid 1206] mknod(0x20000000, 000 [pid 1205] <... futex resumed>) = 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1204, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1206] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1205] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1212] ioctl(4, LOOP_SET_FD, 3 [pid 1206] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1212] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1206] <... futex resumed>) = 1 [pid 1205] <... futex resumed>) = 0 [pid 1206] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1212] close(4 [pid 1205] exit_group(0 [pid 1212] <... close resumed>) = 0 [pid 1206] <... futex resumed>) = ? [pid 1205] <... exit_group resumed>) = ? [pid 1212] close(3) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 1206] +++ exited with 0 +++ [pid 1205] +++ exited with 0 +++ [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 1212] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] ioctl(3, LOOP_CLR_FD [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1205, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1212] <... futex resumed>) = 1 [pid 1208] <... futex resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 1212] chdir("./file0" [pid 1208] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] close(3 [pid 1212] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1208] <... futex resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 1212] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1208] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1212] <... futex resumed>) = 0 [pid 1208] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1212] creat("./bus", 000 [pid 1208] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1214 [pid 1212] <... creat resumed>) = 3 [pid 1210] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1208] <... futex resumed>) = 0 [pid 1212] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1208] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1212] <... futex resumed>) = 0 [pid 1208] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1212] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1208] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1212] <... openat resumed>) = 4 [pid 1208] <... futex resumed>) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 1212] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1208] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1212] <... futex resumed>) = 0 [pid 1208] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1212] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1208] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1212] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1208] <... futex resumed>) = 0 [pid 1212] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1208] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1212] <... futex resumed>) = 0 [pid 1208] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1212] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1208] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... openat resumed>) = 3 [pid 1212] <... open resumed>) = 5 [pid 1208] <... futex resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 1212] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1208] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1212] <... futex resumed>) = 0 [pid 1208] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 302] <... ioctl resumed>) = 0 [pid 1212] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1208] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] close(3 [pid 1212] <... mmap resumed>) = 0x20000000 [pid 1208] <... futex resumed>) = 0 [pid 1212] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1208] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] <... close resumed>) = 0 [pid 1212] <... futex resumed>) = 0 [pid 1208] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1212] memfd_create("syzkaller", 0 [pid 1208] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1212] <... memfd_create resumed>) = 6 [pid 1208] <... futex resumed>) = 0 [pid 1212] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1208] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1212] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1212] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1210] <... write resumed>) = 262144 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1215 ./strace-static-x86_64: Process 1213 attached [pid 1212] <... write resumed>) = 131072 [pid 1210] munmap(0x7fe6f03b1000, 138412032 [pid 1212] munmap(0x7fe6f03b1000, 138412032executing program ) = 0 [pid 1210] <... munmap resumed>) = 0 [pid 1213] set_robust_list(0x7fe6f87d19a0, 24 [pid 1212] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 7 [pid 1212] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1212] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1215 attached [pid 1215] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1215] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1215] setpgid(0, 0) = 0 [pid 1215] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1215] write(3, "1000", 4) = 4 [pid 1215] close(3) = 0 [pid 1215] write(1, "executing program\n", 18) = 18 [pid 1215] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1212] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1212] close(7) = 0 [pid 1212] close(6) = 0 [pid 1212] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1208] <... futex resumed>) = 0 [pid 1212] mknod(0x20000000, 000 [pid 1208] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1212] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1208] <... futex resumed>) = 0 [pid 1212] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1208] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1212] <... futex resumed>) = 0 [pid 1208] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1212] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1208] exit_group(0 [pid 1212] <... futex resumed>) = ? [pid 1208] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 1214 attached [pid 1213] <... set_robust_list resumed>) = 0 [pid 1212] +++ exited with 0 +++ [pid 1210] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1208] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1208, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 1215] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1215] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1215] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1215] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1214] set_robust_list(0x5555636e06a0, 24 [pid 1213] rt_sigprocmask(SIG_SETMASK, [], [pid 1210] <... openat resumed>) = 4 [pid 1215] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1214] <... set_robust_list resumed>) = 0 [pid 1213] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1210] ioctl(4, LOOP_SET_FD, 3 [pid 1215] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1215] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1210] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1213] memfd_create("syzkaller", 0 [pid 1215] <... clone3 resumed> => {parent_tid=[1216]}, 88) = 1216 [pid 1215] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1215] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1215] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1216 attached [pid 1216] set_robust_list(0x7fe6f87d19a0, 24 [pid 1213] <... memfd_create resumed>) = 3 [pid 1210] ioctl(4, LOOP_CLR_FD [pid 1213] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1210] <... ioctl resumed>) = 0 [pid 1216] <... set_robust_list resumed>) = 0 [pid 1214] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1213] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1216] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1216] memfd_create("syzkaller", 0) = 3 [pid 1216] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 306] <... restart_syscall resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1213] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1210] ioctl(4, LOOP_SET_FD, 3 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1217 [pid 1213] <... write resumed>) = 262144 [pid 1210] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1210] close(4) = 0 [pid 1210] close(3 [pid 1216] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1210] <... close resumed>) = 0 [pid 1210] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1213] munmap(0x7fe6f03b1000, 138412032 [pid 1214] <... prctl resumed>) = 0 [pid 1210] <... futex resumed>) = 1 [pid 1209] <... futex resumed>) = 0 [pid 1209] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1209] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1210] chdir("./file0" [pid 1213] <... munmap resumed>) = 0 [pid 1210] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1213] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1210] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1213] <... openat resumed>) = 4 [pid 1210] <... futex resumed>) = 1 [pid 1209] <... futex resumed>) = 0 [pid 1210] creat("./bus", 000 [pid 1209] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1213] ioctl(4, LOOP_SET_FD, 3 [pid 1209] <... futex resumed>) = 0 [pid 1210] <... creat resumed>) = 3 [pid 1209] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1213] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1210] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1209] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1213] ioctl(4, LOOP_CLR_FD [pid 1210] <... futex resumed>) = 0 [pid 1209] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1213] <... ioctl resumed>) = 0 [pid 1210] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1209] <... futex resumed>) = 0 [pid 1209] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1210] <... openat resumed>) = 4 [pid 1210] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1209] <... futex resumed>) = 0 [pid 1210] <... futex resumed>) = 1 [pid 1209] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1210] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1209] <... futex resumed>) = 0 [pid 1209] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1210] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1210] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1209] <... futex resumed>) = 0 [pid 1210] <... futex resumed>) = 1 [pid 1209] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1210] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1209] <... futex resumed>) = 0 [pid 1209] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1210] <... open resumed>) = 5 [pid 1210] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1209] <... futex resumed>) = 0 [pid 1210] <... futex resumed>) = 1 [pid 1214] setpgid(0, 0 [pid 1209] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1210] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1209] <... futex resumed>) = 0 [pid 1214] <... setpgid resumed>) = 0 [pid 1209] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1210] <... mmap resumed>) = 0x20000000 [pid 1210] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1213] ioctl(4, LOOP_SET_FD, 3 [pid 1209] <... futex resumed>) = 0 [pid 1210] <... futex resumed>) = 1 [pid 1213] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1209] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1214] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1209] <... futex resumed>) = 0 [pid 1213] close(4executing program [pid 1210] memfd_create("syzkaller", 0 [pid 1209] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1210] <... memfd_create resumed>) = 6 [pid 1213] <... close resumed>) = 0 [pid 1210] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1214] <... openat resumed>) = 3 [pid 1213] close(3 [pid 1210] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1216] <... write resumed>) = 262144 [pid 1216] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1216] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 1216] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1216] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1217 attached [pid 1217] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1217] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1217] setpgid(0, 0) = 0 [pid 1217] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1217] write(3, "1000", 4) = 4 [pid 1217] close(3) = 0 [pid 1217] write(1, "executing program\n", 18) = 18 [pid 1217] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1217] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1217] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1216] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1210] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1216] close(4) = 0 [pid 1216] close(3 [pid 1213] <... close resumed>) = 0 [pid 1216] <... close resumed>) = 0 [pid 1210] <... write resumed>) = 131072 [pid 1214] write(3, "1000", 4 [pid 1213] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1216] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1215] <... futex resumed>) = 0 [pid 1215] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1215] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1216] <... futex resumed>) = 1 [pid 1216] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 1216] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1215] <... futex resumed>) = 0 [pid 1215] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1215] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1216] <... futex resumed>) = 1 [pid 1216] creat("./bus", 000) = 3 [pid 1216] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1215] <... futex resumed>) = 0 [pid 1215] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1215] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1216] <... futex resumed>) = 1 [pid 1216] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 1216] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1215] <... futex resumed>) = 0 [pid 1215] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1215] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1216] <... futex resumed>) = 1 [pid 1216] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOSPC (No space left on device) [pid 1216] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1215] <... futex resumed>) = 0 [pid 1215] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1215] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1216] <... futex resumed>) = 1 [pid 1216] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 1216] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1215] <... futex resumed>) = 0 [pid 1215] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1215] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1216] <... futex resumed>) = 1 [pid 1216] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 1216] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1215] <... futex resumed>) = 0 [pid 1215] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1215] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1216] <... futex resumed>) = 1 [pid 1216] memfd_create("syzkaller", 0) = 6 [pid 1216] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1217] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1214] <... write resumed>) = 4 [pid 1213] <... futex resumed>) = 1 [pid 1211] <... futex resumed>) = 0 [pid 1210] munmap(0x7fe6f03b1000, 138412032 [pid 1211] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1211] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1216] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1214] close(3 [pid 1213] chdir("./file0" [pid 1210] <... munmap resumed>) = 0 [pid 1217] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1217] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1214] <... close resumed>) = 0 [pid 1213] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1210] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1217] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1214] write(1, "executing program\n", 18 [pid 1213] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1210] <... openat resumed>) = 7 [pid 1217] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1217] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0}executing program [pid 1214] <... write resumed>) = 18 [pid 1213] <... futex resumed>) = 1 [pid 1211] <... futex resumed>) = 0 [pid 1210] ioctl(7, LOOP_SET_FD, 6 [pid 1211] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1211] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1217] <... clone3 resumed> => {parent_tid=[1218]}, 88) = 1218 [pid 1217] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1214] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1213] creat("./bus", 000 [pid 1210] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1217] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1214] <... futex resumed>) = 0 [pid 1214] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1213] <... creat resumed>) = 3 [pid 1210] ioctl(7, LOOP_CLR_FD [pid 1217] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1210] <... ioctl resumed>) = 0 [pid 1214] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1213] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1216] <... write resumed>) = 131072 [pid 1214] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1213] <... futex resumed>) = 1 [pid 1211] <... futex resumed>) = 0 [pid 1216] munmap(0x7fe6f03b1000, 138412032 [pid 1214] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1213] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1211] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1216] <... munmap resumed>) = 0 [pid 1214] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1213] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1211] <... futex resumed>) = 0 [pid 1216] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 1216] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1214] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1213] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1211] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1216] ioctl(7, LOOP_CLR_FD [pid 1214] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1216] <... ioctl resumed>) = 0 [pid 1213] <... openat resumed>) = 4 [pid 1214] <... mprotect resumed>) = 0 ./strace-static-x86_64: Process 1218 attached [pid 1218] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1218] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1218] memfd_create("syzkaller", 0 [pid 1210] ioctl(7, LOOP_SET_FD, 6 [pid 1218] <... memfd_create resumed>) = 3 [pid 1214] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1213] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1210] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1214] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1213] <... futex resumed>) = 1 [pid 1211] <... futex resumed>) = 0 [pid 1210] close(7 [pid 1214] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1213] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1211] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1210] <... close resumed>) = 0 [pid 1218] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1211] <... futex resumed>) = 0 [pid 1214] <... clone3 resumed> => {parent_tid=[1219]}, 88) = 1219 [pid 1213] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1211] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1210] close(6 [pid 1214] rt_sigprocmask(SIG_SETMASK, [], [pid 1213] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1216] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1216] close(7) = 0 [pid 1216] close(6) = 0 [pid 1214] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1213] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1210] <... close resumed>) = 0 [pid 1214] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1213] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1210] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1214] <... futex resumed>) = 0 [pid 1213] <... futex resumed>) = 1 [pid 1211] <... futex resumed>) = 0 [pid 1210] <... futex resumed>) = 1 [pid 1209] <... futex resumed>) = 0 [pid 1216] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1214] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1213] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1211] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1210] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1209] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1213] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1211] <... futex resumed>) = 0 [pid 1210] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1209] <... futex resumed>) = 0 [pid 1213] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1211] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1210] mknod(0x20000000, 000 [pid 1209] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1213] <... open resumed>) = 5 [pid 1210] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1213] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1210] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1213] <... futex resumed>) = 1 [pid 1211] <... futex resumed>) = 0 [pid 1210] <... futex resumed>) = 1 [pid 1209] <... futex resumed>) = 0 [pid 1213] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1211] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1210] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1213] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1211] <... futex resumed>) = 0 [pid 1209] exit_group(0 [pid 1213] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1211] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1210] <... futex resumed>) = ? [pid 1209] <... exit_group resumed>) = ? [pid 1218] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1216] <... futex resumed>) = 1 [pid 1215] <... futex resumed>) = 0 [pid 1216] mknod(0x20000000, 000 [pid 1215] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1213] <... mmap resumed>) = 0x20000000 [pid 1210] +++ exited with 0 +++ [pid 1209] +++ exited with 0 +++ [pid 1218] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1216] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1215] <... futex resumed>) = 0 [pid 1213] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1209, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1216] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1215] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1213] <... futex resumed>) = 1 [pid 1211] <... futex resumed>) = 0 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 1216] <... futex resumed>) = 0 [pid 1215] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1213] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1211] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1216] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1215] exit_group(0 [pid 1213] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1211] <... futex resumed>) = 0 [pid 1216] <... futex resumed>) = ? [pid 1215] <... exit_group resumed>) = ? [pid 1216] +++ exited with 0 +++ [pid 1215] +++ exited with 0 +++ [pid 1213] memfd_create("syzkaller", 0 [pid 1211] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1213] <... memfd_create resumed>) = 6 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1215, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1213] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 ./strace-static-x86_64: Process 1219 attached [pid 1219] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1219] rt_sigprocmask(SIG_SETMASK, [], [pid 1218] <... write resumed>) = 262144 [pid 1219] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1219] memfd_create("syzkaller", 0) = 3 [pid 1219] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1213] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 304] <... restart_syscall resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1218] munmap(0x7fe6f03b1000, 138412032 [pid 302] <... openat resumed>) = 3 [pid 1218] <... munmap resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1218] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 304] <... openat resumed>) = 3 [pid 1218] <... openat resumed>) = 4 [pid 1213] <... write resumed>) = 131072 [pid 304] ioctl(3, LOOP_CLR_FD [pid 302] ioctl(3, LOOP_CLR_FD [pid 1218] ioctl(4, LOOP_SET_FD, 3 [pid 1213] munmap(0x7fe6f03b1000, 138412032 [pid 304] <... ioctl resumed>) = 0 [pid 1219] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1218] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1213] <... munmap resumed>) = 0 [pid 304] close(3 [pid 302] <... ioctl resumed>) = 0 [pid 1218] ioctl(4, LOOP_CLR_FD [pid 304] <... close resumed>) = 0 [pid 302] close(3 [pid 1218] <... ioctl resumed>) = 0 [pid 1213] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1213] <... openat resumed>) = 7 [pid 302] <... close resumed>) = 0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1220 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1213] ioctl(7, LOOP_SET_FD, 6 [pid 1219] <... write resumed>) = 262144 [pid 1213] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1219] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1213] ioctl(7, LOOP_CLR_FD [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1221 [pid 1218] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1218] close(4) = 0 [pid 1218] close(3) = 0 [pid 1213] <... ioctl resumed>) = 0 [pid 1218] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1217] <... futex resumed>) = 0 [pid 1218] chdir("./file0" [pid 1217] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1218] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1217] <... futex resumed>) = 0 [pid 1218] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1217] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1218] <... futex resumed>) = 0 [pid 1217] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1218] creat("./bus", 000 [pid 1217] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1218] <... creat resumed>) = 3 [pid 1217] <... futex resumed>) = 0 [pid 1218] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1217] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1218] <... futex resumed>) = 0 [pid 1217] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1218] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1217] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1218] <... openat resumed>) = 4 [pid 1217] <... futex resumed>) = 0 [pid 1218] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1217] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1218] <... futex resumed>) = 0 [pid 1217] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1218] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1217] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1218] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1217] <... futex resumed>) = 0 [pid 1218] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1217] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1213] ioctl(7, LOOP_SET_FD, 6 [pid 1218] <... futex resumed>) = 0 [pid 1217] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1219] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1218] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1217] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1213] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1219] <... openat resumed>) = 4 [pid 1218] <... open resumed>) = 5 [pid 1217] <... futex resumed>) = 0 [pid 1213] close(7 [pid 1219] ioctl(4, LOOP_SET_FD, 3 [pid 1218] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1217] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1219] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1218] <... futex resumed>) = 0 [pid 1217] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1213] <... close resumed>) = 0 [pid 1219] ioctl(4, LOOP_CLR_FD [pid 1218] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1217] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1213] close(6 [pid 1219] <... ioctl resumed>) = 0 [pid 1218] <... mmap resumed>) = 0x20000000 [pid 1217] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1221 attached [pid 1218] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1217] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1213] <... close resumed>) = 0 [pid 1218] <... futex resumed>) = 0 [pid 1217] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1213] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1218] memfd_create("syzkaller", 0 [pid 1217] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1218] <... memfd_create resumed>) = 6 [pid 1217] <... futex resumed>) = 0 [pid 1213] <... futex resumed>) = 1 [pid 1211] <... futex resumed>) = 0 [pid 1218] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1217] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1213] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1211] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1218] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1213] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1211] <... futex resumed>) = 0 [pid 1213] mknod(0x20000000, 000 [pid 1211] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1213] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1218] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1213] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1219] ioctl(4, LOOP_SET_FD, 3 [pid 1218] <... write resumed>) = 131072 [pid 1213] <... futex resumed>) = 1 [pid 1211] <... futex resumed>) = 0 [pid 1221] set_robust_list(0x5555636e06a0, 24 [pid 1219] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1218] munmap(0x7fe6f03b1000, 138412032 [pid 1213] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1211] exit_group(0 [pid 1221] <... set_robust_list resumed>) = 0 [pid 1219] close(4 [pid 1218] <... munmap resumed>) = 0 [pid 1213] <... futex resumed>) = ? [pid 1211] <... exit_group resumed>) = ? [pid 1221] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1219] <... close resumed>) = 0 [pid 1218] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1213] +++ exited with 0 +++ [pid 1221] <... prctl resumed>) = 0 [pid 1219] close(3 [pid 1218] <... openat resumed>) = 7 [pid 1221] setpgid(0, 0 [pid 1219] <... close resumed>) = 0 [pid 1218] ioctl(7, LOOP_SET_FD, 6 [pid 1211] +++ exited with 0 +++ [pid 1221] <... setpgid resumed>) = 0 [pid 1219] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1218] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1211, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 1220 attached [pid 1221] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC executing program executing program [pid 1219] <... futex resumed>) = 1 [pid 1218] ioctl(7, LOOP_CLR_FD [pid 1214] <... futex resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1221] <... openat resumed>) = 3 [pid 1219] chdir("./file0" [pid 1218] <... ioctl resumed>) = 0 [pid 1214] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1220] set_robust_list(0x5555636e06a0, 24 [pid 1214] <... futex resumed>) = 0 [pid 1221] write(3, "1000", 4 [pid 1219] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1214] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1221] <... write resumed>) = 4 [pid 1220] <... set_robust_list resumed>) = 0 [pid 1219] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1214] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1221] close(3 [pid 1219] <... futex resumed>) = 0 [pid 1214] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1221] <... close resumed>) = 0 [pid 1219] creat("./bus", 000 [pid 1214] <... futex resumed>) = 0 [pid 1221] write(1, "executing program\n", 18 [pid 1219] <... creat resumed>) = 3 [pid 1214] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1221] <... write resumed>) = 18 [pid 1220] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1219] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1214] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1221] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1219] <... futex resumed>) = 0 [pid 1214] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1221] <... futex resumed>) = 0 [pid 1219] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1214] <... futex resumed>) = 0 [pid 1221] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1220] <... prctl resumed>) = 0 [pid 1219] <... openat resumed>) = 4 [pid 1214] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1221] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1219] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1218] ioctl(7, LOOP_SET_FD, 6 [pid 1214] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1221] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1219] <... futex resumed>) = 0 [pid 1218] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1214] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1221] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1219] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1218] close(7 [pid 1214] <... futex resumed>) = 0 [pid 1221] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1220] setpgid(0, 0 [pid 1219] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1218] <... close resumed>) = 0 [pid 1214] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1221] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1219] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1218] close(6 [pid 1214] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1221] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1220] <... setpgid resumed>) = 0 [pid 1219] <... futex resumed>) = 0 [pid 1218] <... close resumed>) = 0 [pid 1214] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1221] <... mprotect resumed>) = 0 [pid 1219] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1218] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1214] <... futex resumed>) = 0 [pid 1221] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1220] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1219] <... open resumed>) = 5 [pid 1218] <... futex resumed>) = 1 [pid 1217] <... futex resumed>) = 0 [pid 1214] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1221] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1219] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1218] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1217] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1221] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1219] <... futex resumed>) = 0 [pid 1218] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1217] <... futex resumed>) = 0 [pid 1214] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1220] <... openat resumed>) = 3 [pid 1219] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1218] mknod(0x20000000, 000 [pid 1217] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1214] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1221] <... clone3 resumed> => {parent_tid=[1222]}, 88) = 1222 [pid 1220] write(3, "1000", 4 [pid 1219] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1218] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1214] <... futex resumed>) = 0 [pid 1221] rt_sigprocmask(SIG_SETMASK, [], [pid 1219] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1218] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1214] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1221] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1220] <... write resumed>) = 4 [pid 1219] <... mmap resumed>) = 0x20000000 [pid 1218] <... futex resumed>) = 1 [pid 1217] <... futex resumed>) = 0 [pid 1221] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1219] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1218] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1217] exit_group(0 [pid 1221] <... futex resumed>) = 0 [pid 1220] close(3 [pid 1219] <... futex resumed>) = 1 [pid 1218] <... futex resumed>) = ? [pid 1217] <... exit_group resumed>) = ? [pid 1214] <... futex resumed>) = 0 [pid 1221] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1219] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1218] +++ exited with 0 +++ [pid 1217] +++ exited with 0 +++ [pid 1220] <... close resumed>) = 0 [pid 1214] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1220] write(1, "executing program\n", 18 [pid 1219] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1214] <... futex resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1217, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1220] <... write resumed>) = 18 [pid 1219] memfd_create("syzkaller", 0 [pid 1214] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 1220] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1219] <... memfd_create resumed>) = 6 [pid 1219] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1220] <... futex resumed>) = 0 [pid 1219] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1220] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1219] <... write resumed>) = 131072 [pid 1220] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1219] munmap(0x7fe6f03b1000, 138412032 [pid 1220] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1219] <... munmap resumed>) = 0 [pid 1220] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1219] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 7 [pid 1220] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1219] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 305] <... restart_syscall resumed>) = 0 [pid 1219] ioctl(7, LOOP_CLR_FD [pid 1220] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1219] <... ioctl resumed>) = 0 [pid 1220] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1220] <... mprotect resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 305] ioctl(3, LOOP_CLR_FD) = 0 [pid 1220] rt_sigprocmask(SIG_BLOCK, ~[], [pid 305] close(3) = 0 [pid 1220] <... rt_sigprocmask resumed>[], 8) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1220] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1223 ./strace-static-x86_64: Process 1223 attached [pid 1220] <... clone3 resumed> => {parent_tid=[1224]}, 88) = 1224 [pid 1220] rt_sigprocmask(SIG_SETMASK, [], [pid 1223] set_robust_list(0x5555636e06a0, 24 [pid 1220] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1219] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1219] close(7) = 0 [pid 1219] close(6 [pid 1220] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1219] <... close resumed>) = 0 [pid 1220] <... futex resumed>) = 0 [pid 1219] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1220] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1219] <... futex resumed>) = 1 [pid 1214] <... futex resumed>) = 0 [pid 1219] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1214] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1219] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1214] <... futex resumed>) = 0 [pid 1219] mknod(0x20000000, 000 [pid 1214] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1219] <... mknod resumed>) = -1 EEXIST (File exists) [pid 306] <... restart_syscall resumed>) = 0 [pid 1219] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1214] <... futex resumed>) = 0 [pid 1219] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1214] exit_group(0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1219] <... futex resumed>) = ? [pid 1214] <... exit_group resumed>) = ? [pid 306] <... openat resumed>) = 3 [pid 1219] +++ exited with 0 +++ [pid 1214] +++ exited with 0 +++ [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1214, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] close(3 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 306] <... close resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 1225 [pid 1223] <... set_robust_list resumed>) = 0 executing program executing program ./strace-static-x86_64: Process 1224 attached ./strace-static-x86_64: Process 1222 attached [pid 1223] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1223] setpgid(0, 0) = 0 [pid 1223] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1222] set_robust_list(0x7fe6f87d19a0, 24 [pid 1224] set_robust_list(0x7fe6f87d19a0, 24 [pid 1223] <... openat resumed>) = 3 [pid 1223] write(3, "1000", 4) = 4 [pid 1223] close(3) = 0 [pid 1223] write(1, "executing program\n", 18) = 18 [pid 1223] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1223] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1223] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1223] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1223] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1224] <... set_robust_list resumed>) = 0 [pid 1223] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1222] <... set_robust_list resumed>) = 0 [pid 1223] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1223] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1222] rt_sigprocmask(SIG_SETMASK, [], [pid 1224] rt_sigprocmask(SIG_SETMASK, [], [pid 1223] <... clone3 resumed> => {parent_tid=[1226]}, 88) = 1226 [pid 1222] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1223] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1223] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1222] memfd_create("syzkaller", 0 [pid 1223] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1225 attached [pid 1225] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1222] <... memfd_create resumed>) = 3 [pid 1222] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1224] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1225] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1222] <... mmap resumed>) = 0x7fe6f03b1000 [pid 303] <... restart_syscall resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 303] ioctl(3, LOOP_CLR_FD) = 0 [pid 303] close(3) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 1227 [pid 1225] setpgid(0, 0) = 0 [pid 1225] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1225] write(3, "1000", 4) = 4 [pid 1225] close(3) = 0 [pid 1225] write(1, "executing program\n", 18) = 18 [pid 1225] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1222] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1225] <... futex resumed>) = 0 [pid 1225] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1225] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1225] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1225] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1224] memfd_create("syzkaller", 0 [pid 1225] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1224] <... memfd_create resumed>) = 3 [pid 1225] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1224] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1225] <... clone3 resumed> => {parent_tid=[1228]}, 88) = 1228 [pid 1225] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1225] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1225] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1226 attached [pid 1226] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1226] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1226] memfd_create("syzkaller", 0 [pid 1224] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1226] <... memfd_create resumed>) = 3 [pid 1226] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1224] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1222] <... write resumed>) = 262144 [pid 1226] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1224] <... write resumed>) = 262144 [pid 1222] munmap(0x7fe6f03b1000, 138412032 [pid 1224] munmap(0x7fe6f03b1000, 138412032 [pid 1226] <... write resumed>) = 262144 [pid 1222] <... munmap resumed>) = 0 [pid 1226] munmap(0x7fe6f03b1000, 138412032 [pid 1224] <... munmap resumed>) = 0 [pid 1226] <... munmap resumed>) = 0 [pid 1224] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1222] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1226] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 1226] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1226] ioctl(4, LOOP_CLR_FD) = 0 [pid 1222] <... openat resumed>) = 4 [pid 1224] <... openat resumed>) = 4 ./strace-static-x86_64: Process 1228 attached [pid 1224] ioctl(4, LOOP_SET_FD, 3 [pid 1222] ioctl(4, LOOP_SET_FD, 3 [pid 1228] set_robust_list(0x7fe6f87d19a0, 24 [pid 1222] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1228] <... set_robust_list resumed>) = 0 [pid 1228] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1228] memfd_create("syzkaller", 0) = 3 [pid 1224] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1222] ioctl(4, LOOP_CLR_FD [pid 1228] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1222] <... ioctl resumed>) = 0 [pid 1228] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1224] ioctl(4, LOOP_CLR_FD [pid 1226] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1226] close(4) = 0 [pid 1226] close(3 [pid 1222] ioctl(4, LOOP_SET_FD, 3 [pid 1224] <... ioctl resumed>) = 0 [pid 1226] <... close resumed>) = 0 [pid 1226] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1223] <... futex resumed>) = 0 [pid 1223] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1223] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1226] <... futex resumed>) = 1 [pid 1226] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 1222] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1226] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1223] <... futex resumed>) = 0 [pid 1223] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1223] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1226] <... futex resumed>) = 1 [pid 1222] close(4 [pid 1226] creat("./bus", 000 [pid 1222] <... close resumed>) = 0 [pid 1226] <... creat resumed>) = 3 [pid 1222] close(3 [pid 1226] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1223] <... futex resumed>) = 0 [pid 1223] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1222] <... close resumed>) = 0 [pid 1223] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1226] <... futex resumed>) = 1 [pid 1226] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1222] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1221] <... futex resumed>) = 0 [pid 1221] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1221] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1222] chdir("./file0" [pid 1224] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1222] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1222] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1224] close(4 [pid 1226] <... openat resumed>) = 4 [pid 1222] <... futex resumed>) = 1 [pid 1224] <... close resumed>) = 0 [pid 1222] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1224] close(3 [pid 1221] <... futex resumed>) = 0 [pid 1221] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1222] <... futex resumed>) = 0 [pid 1221] <... futex resumed>) = 1 [pid 1221] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1226] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1223] <... futex resumed>) = 0 [pid 1223] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1223] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1226] <... futex resumed>) = 1 [pid 1226] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1222] creat("./bus", 000) = 3 [pid 1224] <... close resumed>) = 0 [pid 1222] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1224] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1221] <... futex resumed>) = 0 [pid 1222] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1221] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1224] <... futex resumed>) = 1 [pid 1222] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1221] <... futex resumed>) = 0 [pid 1220] <... futex resumed>) = 0 [pid 1224] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1222] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1221] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1220] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1220] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1224] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1222] <... openat resumed>) = 4 [pid 1222] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1224] chdir("./file0" [pid 1222] <... futex resumed>) = 1 [pid 1221] <... futex resumed>) = 0 [pid 1222] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1221] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1224] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1221] <... futex resumed>) = 0 [pid 1224] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1221] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1222] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1222] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1220] <... futex resumed>) = 0 [pid 1224] <... futex resumed>) = 1 [pid 1220] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1224] creat("./bus", 000 [pid 1222] <... futex resumed>) = 1 [pid 1221] <... futex resumed>) = 0 [pid 1222] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1221] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1220] <... futex resumed>) = 0 [pid 1224] <... creat resumed>) = 3 [pid 1222] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1221] <... futex resumed>) = 0 [pid 1220] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1224] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1222] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1221] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1224] <... futex resumed>) = 0 [pid 1222] <... open resumed>) = 5 [pid 1220] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1224] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1222] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1220] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1224] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1222] <... futex resumed>) = 1 [pid 1221] <... futex resumed>) = 0 [pid 1220] <... futex resumed>) = 0 [pid 1224] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1222] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1221] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1220] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1222] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1221] <... futex resumed>) = 0 [pid 1221] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1224] <... openat resumed>) = 4 [pid 1222] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1226] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1226] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1222] <... mmap resumed>) = 0x20000000 [pid 1224] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1222] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1223] <... futex resumed>) = 0 [pid 1222] <... futex resumed>) = 1 [pid 1224] <... futex resumed>) = 1 [pid 1221] <... futex resumed>) = 0 [pid 1220] <... futex resumed>) = 0 [pid 1223] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1222] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1221] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1220] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1224] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1223] <... futex resumed>) = 0 [pid 1222] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1221] <... futex resumed>) = 0 [pid 1220] <... futex resumed>) = 0 [pid 1223] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1221] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1220] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1224] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1222] memfd_create("syzkaller", 0 [pid 1226] <... futex resumed>) = 1 [pid 1228] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1224] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1222] <... memfd_create resumed>) = 6 [pid 1220] <... futex resumed>) = 0 [pid 1222] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1224] <... futex resumed>) = 1 [pid 1220] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1222] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1220] <... futex resumed>) = 0 [pid 1224] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1220] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1226] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 1226] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1223] <... futex resumed>) = 0 [pid 1223] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1223] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1226] <... futex resumed>) = 1 [pid 1226] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 1226] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1223] <... futex resumed>) = 0 [pid 1223] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1223] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1226] <... futex resumed>) = 1 [pid 1226] memfd_create("syzkaller", 0) = 6 [pid 1226] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1222] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1224] <... open resumed>) = 5 ./strace-static-x86_64: Process 1227 attached [pid 1226] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1224] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1222] <... write resumed>) = 131072 [pid 1224] <... futex resumed>) = 1 [pid 1220] <... futex resumed>) = 0 [pid 1222] munmap(0x7fe6f03b1000, 138412032 [pid 1227] set_robust_list(0x5555636e06a0, 24 [pid 1224] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1220] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1227] <... set_robust_list resumed>) = 0 [pid 1224] <... mmap resumed>) = 0x20000000 [pid 1222] <... munmap resumed>) = 0 [pid 1220] <... futex resumed>) = 0 [pid 1224] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1222] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1220] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1227] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1224] <... futex resumed>) = 0 [pid 1222] <... openat resumed>) = 7 [pid 1220] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1220] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1227] <... prctl resumed>) = 0 [pid 1224] memfd_create("syzkaller", 0 [pid 1222] ioctl(7, LOOP_SET_FD, 6 [pid 1220] <... futex resumed>) = 0 [pid 1228] <... write resumed>) = 262144 [pid 1227] setpgid(0, 0 [pid 1224] <... memfd_create resumed>) = 6 [pid 1222] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1220] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1227] <... setpgid resumed>) = 0 [pid 1224] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1222] ioctl(7, LOOP_CLR_FD [pid 1227] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1226] <... write resumed>) = 131072 [pid 1224] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1222] <... ioctl resumed>) = 0 [pid 1228] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1228] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 1228] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1228] ioctl(4, LOOP_CLR_FD) = 0 [pid 1226] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1226] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 7 [pid 1226] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1226] ioctl(7, LOOP_CLR_FD) = 0 [pid 1224] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1227] <... openat resumed>) = 3 [pid 1224] <... write resumed>) = 131072 executing program [pid 1227] write(3, "1000", 4 [pid 1228] ioctl(4, LOOP_SET_FD, 3 [pid 1227] <... write resumed>) = 4 [pid 1224] munmap(0x7fe6f03b1000, 138412032 [pid 1228] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1228] close(4) = 0 [pid 1227] close(3 [pid 1228] close(3) = 0 [pid 1227] <... close resumed>) = 0 [pid 1224] <... munmap resumed>) = 0 [pid 1227] write(1, "executing program\n", 18 [pid 1222] ioctl(7, LOOP_SET_FD, 6 [pid 1224] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1227] <... write resumed>) = 18 [pid 1222] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1226] ioctl(7, LOOP_SET_FD, 6 [pid 1222] close(7 [pid 1227] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1224] <... openat resumed>) = 7 [pid 1227] <... futex resumed>) = 0 [pid 1222] <... close resumed>) = 0 [pid 1224] ioctl(7, LOOP_SET_FD, 6 [pid 1227] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1222] close(6 [pid 1224] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1226] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1226] close(7) = 0 [pid 1226] close(6 [pid 1227] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1226] <... close resumed>) = 0 [pid 1224] ioctl(7, LOOP_CLR_FD [pid 1222] <... close resumed>) = 0 [pid 1227] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1226] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1224] <... ioctl resumed>) = 0 [pid 1222] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1228] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1227] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1222] <... futex resumed>) = 1 [pid 1221] <... futex resumed>) = 0 [pid 1227] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1222] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1221] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1227] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1222] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1221] <... futex resumed>) = 0 [pid 1227] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1222] mknod(0x20000000, 000 [pid 1221] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1228] <... futex resumed>) = 1 [pid 1227] <... mprotect resumed>) = 0 [pid 1226] <... futex resumed>) = 1 [pid 1225] <... futex resumed>) = 0 [pid 1223] <... futex resumed>) = 0 [pid 1222] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1228] chdir("./file0" [pid 1226] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1225] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1223] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1222] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1228] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1227] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1226] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1225] <... futex resumed>) = 0 [pid 1223] <... futex resumed>) = 0 [pid 1222] <... futex resumed>) = 1 [pid 1221] <... futex resumed>) = 0 [pid 1228] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1227] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1226] mknod(0x20000000, 000 [pid 1225] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1223] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1222] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1221] exit_group(0 [pid 1228] <... futex resumed>) = 0 [pid 1227] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1226] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1225] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1222] <... futex resumed>) = ? [pid 1221] <... exit_group resumed>) = ? [pid 1228] creat("./bus", 000 [pid 1226] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1225] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1224] ioctl(7, LOOP_SET_FD, 6 [pid 1222] +++ exited with 0 +++ [pid 1221] +++ exited with 0 +++ [pid 1228] <... creat resumed>) = 3 [pid 1227] <... clone3 resumed> => {parent_tid=[1229]}, 88) = 1229 [pid 1226] <... futex resumed>) = 1 [pid 1225] <... futex resumed>) = 0 [pid 1224] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1223] <... futex resumed>) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1221, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1228] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1227] rt_sigprocmask(SIG_SETMASK, [], [pid 1226] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1225] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1224] close(7 [pid 1223] exit_group(0 [pid 1228] <... futex resumed>) = 0 [pid 1227] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1226] <... futex resumed>) = ? [pid 1225] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1224] <... close resumed>) = 0 [pid 1223] <... exit_group resumed>) = ? [pid 1228] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1227] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1226] +++ exited with 0 +++ [pid 1225] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1224] close(6 [pid 1223] +++ exited with 0 +++ [pid 1228] <... openat resumed>) = 4 [pid 1227] <... futex resumed>) = 0 [pid 1225] <... futex resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1223, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1228] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1225] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1228] <... futex resumed>) = 0 [pid 1227] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1225] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1224] <... close resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 1228] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1225] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1228] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1225] <... futex resumed>) = 0 [pid 1224] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] ioctl(3, LOOP_CLR_FD [pid 1228] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1225] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1224] <... futex resumed>) = 1 [pid 1220] <... futex resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 1228] <... futex resumed>) = 0 [pid 1225] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1224] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1220] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... restart_syscall resumed>) = 0 [pid 302] close(3 [pid 1228] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1225] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1224] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1220] <... futex resumed>) = 0 [pid 1228] <... open resumed>) = 5 [pid 1225] <... futex resumed>) = 0 [pid 1224] mknod(0x20000000, 000 [pid 1220] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] <... close resumed>) = 0 [pid 1228] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1225] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1224] <... mknod resumed>) = -1 EEXIST (File exists) [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1228] <... futex resumed>) = 0 [pid 1225] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1224] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... openat resumed>) = 3 [pid 1228] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1225] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] ioctl(3, LOOP_CLR_FD [pid 1228] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1225] <... futex resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 1228] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1225] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1220] <... futex resumed>) = 0 [pid 305] close(3 [pid 1224] <... futex resumed>) = 1 [pid 1228] <... mmap resumed>) = 0x20000000 [pid 1224] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1220] exit_group(0 [pid 305] <... close resumed>) = 0 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1230 [pid 1228] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1224] <... futex resumed>) = ? [pid 1220] <... exit_group resumed>) = ? [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1228] <... futex resumed>) = 1 [pid 1225] <... futex resumed>) = 0 [pid 1228] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1225] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1231 [pid 1228] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1225] <... futex resumed>) = 0 [pid 1228] memfd_create("syzkaller", 0 [pid 1225] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1224] +++ exited with 0 +++ [pid 1220] +++ exited with 0 +++ [pid 1228] <... memfd_create resumed>) = 6 [pid 1228] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1228] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1220, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1228] <... write resumed>) = 131072 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 1228] munmap(0x7fe6f03b1000, 138412032executing program executing program ./strace-static-x86_64: Process 1229 attached ) = 0 [pid 1228] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 7 [pid 1228] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1228] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1230 attached [pid 1230] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1230] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1230] setpgid(0, 0) = 0 [pid 1230] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1230] write(3, "1000", 4) = 4 [pid 1230] close(3) = 0 [pid 1230] write(1, "executing program\n", 18) = 18 [pid 1230] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1228] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1228] close(7) = 0 [pid 1228] close(6) = 0 [pid 1228] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1225] <... futex resumed>) = 0 [pid 1228] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1225] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1228] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1225] <... futex resumed>) = 0 [pid 1228] mknod(0x20000000, 000 [pid 1225] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1228] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1228] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1225] <... futex resumed>) = 0 [pid 1228] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1225] exit_group(0 [pid 1228] <... futex resumed>) = ? [pid 1225] <... exit_group resumed>) = ? [pid 1228] +++ exited with 0 +++ [pid 1225] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1225, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 1230] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1230] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1230] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1230] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1230] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1230] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[1232]}, 88) = 1232 [pid 1230] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1230] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1230] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1231 attached [pid 1231] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1231] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1231] setpgid(0, 0) = 0 [pid 1231] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1231] write(3, "1000", 4) = 4 [pid 1231] close(3) = 0 [pid 1231] write(1, "executing program\n", 18) = 18 [pid 1231] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1231] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1231] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1231] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1231] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1231] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1231] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[1233]}, 88) = 1233 [pid 1231] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1231] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1231] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1232 attached [pid 1232] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1232] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1232] memfd_create("syzkaller", 0./strace-static-x86_64: Process 1233 attached [pid 1229] set_robust_list(0x7fe6f87d19a0, 24 [pid 1232] <... memfd_create resumed>) = 3 [pid 1232] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1229] <... set_robust_list resumed>) = 0 [pid 1233] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1229] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1233] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1229] memfd_create("syzkaller", 0) = 3 [pid 304] <... restart_syscall resumed>) = 0 [pid 1229] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1232] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 306] <... restart_syscall resumed>) = 0 [pid 1229] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 306] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 304] <... openat resumed>) = 3 [pid 304] ioctl(3, LOOP_CLR_FD [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1234 [pid 1229] <... write resumed>) = 262144 [pid 304] <... ioctl resumed>) = 0 [pid 1232] <... write resumed>) = 262144 [pid 1232] munmap(0x7fe6f03b1000, 138412032 [pid 1233] memfd_create("syzkaller", 0 [pid 1229] munmap(0x7fe6f03b1000, 138412032 [pid 304] close(3 [pid 1232] <... munmap resumed>) = 0 [pid 1232] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 304] <... close resumed>) = 0 [pid 1232] <... openat resumed>) = 4 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1232] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1232] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1234 attached [pid 1234] set_robust_list(0x5555636e06a0, 24) = 0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1235 [pid 1229] <... munmap resumed>) = 0 [pid 1234] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1234] setpgid(0, 0) = 0 [pid 1233] <... memfd_create resumed>) = 3 [pid 1229] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1234] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1229] <... openat resumed>) = 4 [pid 1233] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1234] <... openat resumed>) = 3 [pid 1229] ioctl(4, LOOP_SET_FD, 3 [pid 1233] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1229] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1232] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1232] close(4) = 0 [pid 1232] close(3 [pid 1229] ioctl(4, LOOP_CLR_FD [pid 1232] <... close resumed>) = 0 [pid 1232] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1230] <... futex resumed>) = 0 [pid 1230] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1230] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1232] <... futex resumed>) = 1 [pid 1232] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 1232] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1230] <... futex resumed>) = 0 [pid 1230] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1230] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1232] <... futex resumed>) = 1 [pid 1232] creat("./bus", 000) = 3 [pid 1232] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1230] <... futex resumed>) = 0 [pid 1233] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1230] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1229] <... ioctl resumed>) = 0 [pid 1230] <... futex resumed>) = 0 [pid 1230] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1232] <... futex resumed>) = 1 [pid 1232] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 1232] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1230] <... futex resumed>) = 0 [pid 1230] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1230] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1232] <... futex resumed>) = 1 [pid 1232] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOSPC (No space left on device) [pid 1232] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1230] <... futex resumed>) = 0 [pid 1230] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1230] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1232] <... futex resumed>) = 1 [pid 1232] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 1229] ioctl(4, LOOP_SET_FD, 3 [pid 1232] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1229] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1230] <... futex resumed>) = 0 [pid 1230] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1230] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1232] <... futex resumed>) = 1 [pid 1232] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1229] close(4) = 0 [pid 1229] close(3 [pid 1232] <... mmap resumed>) = 0x20000000 [pid 1232] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1230] <... futex resumed>) = 0 [pid 1230] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1230] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1232] <... futex resumed>) = 1 [pid 1229] <... close resumed>) = 0 [pid 1229] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1232] memfd_create("syzkaller", 0 [pid 1229] <... futex resumed>) = 1 [pid 1227] <... futex resumed>) = 0 [pid 1227] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1229] chdir("./file0" [pid 1227] <... futex resumed>) = 0 [pid 1229] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1227] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1232] <... memfd_create resumed>) = 6 [pid 1229] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1232] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1229] <... futex resumed>) = 1 [pid 1227] <... futex resumed>) = 0 [pid 1229] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1227] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1229] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1227] <... futex resumed>) = 0 [pid 1229] creat("./bus", 000 [pid 1227] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1232] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1233] <... write resumed>) = 262144 [pid 1232] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1229] <... creat resumed>) = 3 [pid 1229] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1227] <... futex resumed>) = 0 [pid 1229] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1227] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1229] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1227] <... futex resumed>) = 0 [pid 1227] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1229] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 1229] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1227] <... futex resumed>) = 0 [pid 1229] <... futex resumed>) = 1 [pid 1227] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1229] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1227] <... futex resumed>) = 0 [pid 1227] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1229] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1233] munmap(0x7fe6f03b1000, 138412032 [pid 1232] <... write resumed>) = 131072 [pid 1229] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1234] write(3, "1000", 4 [pid 1229] <... futex resumed>) = 1 [pid 1227] <... futex resumed>) = 0 [pid 1229] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1227] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1234] <... write resumed>) = 4 [pid 1229] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1227] <... futex resumed>) = 0 [pid 1229] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1227] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1234] close(3 [pid 1229] <... open resumed>) = 5 [pid 1234] <... close resumed>) = 0 [pid 1229] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1234] write(1, "executing program\n", 18executing program [pid 1227] <... futex resumed>) = 0 [pid 1229] <... futex resumed>) = 1 [pid 1227] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1229] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1227] <... futex resumed>) = 0 [pid 1234] <... write resumed>) = 18 [pid 1227] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1234] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1229] <... mmap resumed>) = 0x20000000 [pid 1233] <... munmap resumed>) = 0 [pid 1229] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1234] <... futex resumed>) = 0 [pid 1229] <... futex resumed>) = 1 [pid 1227] <... futex resumed>) = 0 [pid 1233] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1227] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1229] memfd_create("syzkaller", 0 [pid 1227] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1234] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1229] <... memfd_create resumed>) = 6 [pid 1233] <... openat resumed>) = 4 [pid 1229] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1234] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1234] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1233] ioctl(4, LOOP_SET_FD, 3 [pid 1229] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1234] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1234] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1234] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1234] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1232] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1234] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1234] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1232] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 7 [pid 1232] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1232] ioctl(7, LOOP_CLR_FD) = 0 [pid 1229] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1233] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1234] <... clone3 resumed> => {parent_tid=[1236]}, 88) = 1236 [pid 1234] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1234] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1234] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1235 attached [pid 1235] set_robust_list(0x5555636e06a0, 24 [pid 1229] <... write resumed>) = 131072 [pid 1233] ioctl(4, LOOP_CLR_FD [pid 1235] <... set_robust_list resumed>) = 0 [pid 1235] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1235] setpgid(0, 0 [pid 1229] munmap(0x7fe6f03b1000, 138412032 [pid 1233] <... ioctl resumed>) = 0 [pid 1235] <... setpgid resumed>) = 0 [pid 1235] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1229] <... munmap resumed>) = 0 [pid 1232] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1232] close(7) = 0 [pid 1232] close(6) = 0 [pid 1232] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1230] <... futex resumed>) = 0 [pid 1230] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1230] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1232] <... futex resumed>) = 1 [pid 1232] mknod(0x20000000, 000) = -1 EEXIST (File exists) [pid 1232] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1230] <... futex resumed>) = 0 [pid 1232] <... futex resumed>) = 1 [pid 1230] exit_group(0) = ? [pid 1232] +++ exited with 0 +++ [pid 1230] +++ exited with 0 +++ [pid 1229] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1230, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1235] <... openat resumed>) = 3 [pid 1229] <... openat resumed>) = 7 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 1235] write(3, "1000", 4 [pid 1229] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1229] ioctl(7, LOOP_CLR_FD [pid 1235] <... write resumed>) = 4 [pid 1229] <... ioctl resumed>) = 0 [pid 1235] close(3) = 0 [pid 1235] write(1, "executing program\n", 18 [pid 302] <... restart_syscall resumed>) = 0 executing program [pid 1235] <... write resumed>) = 18 [pid 1235] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1235] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 302] <... openat resumed>) = 3 [pid 1235] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1233] ioctl(4, LOOP_SET_FD, 3 [pid 302] ioctl(3, LOOP_CLR_FD [pid 1235] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1233] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 302] <... ioctl resumed>) = 0 [pid 1235] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 302] close(3 [pid 1233] close(4 [pid 1235] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 302] <... close resumed>) = 0 [pid 1235] <... mmap resumed>) = 0x7fe6f87b1000 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1233] <... close resumed>) = 0 [pid 1235] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1235] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1233] close(3 [pid 1229] ioctl(7, LOOP_SET_FD, 6 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1237 [pid 1235] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1229] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1235] <... clone3 resumed> => {parent_tid=[1238]}, 88) = 1238 [pid 1235] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1235] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1235] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1237 attached [pid 1237] set_robust_list(0x5555636e06a0, 24 [pid 1233] <... close resumed>) = 0 [pid 1229] close(7 [pid 1237] <... set_robust_list resumed>) = 0 [pid 1233] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1229] <... close resumed>) = 0 [pid 1233] <... futex resumed>) = 1 [pid 1231] <... futex resumed>) = 0 [pid 1229] close(6 [pid 1231] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1231] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1237] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1229] <... close resumed>) = 0 [pid 1233] chdir("./file0" [pid 1229] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1237] setpgid(0, 0 [pid 1229] <... futex resumed>) = 1 [pid 1227] <... futex resumed>) = 0 [pid 1233] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1229] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1227] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1233] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1229] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1227] <... futex resumed>) = 0 [pid 1229] mknod(0x20000000, 000 [pid 1233] <... futex resumed>) = 1 [pid 1231] <... futex resumed>) = 0 [pid 1227] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1233] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1231] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1229] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1231] <... futex resumed>) = 0 [pid 1233] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1231] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1229] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1237] <... setpgid resumed>) = 0 [pid 1229] <... futex resumed>) = 1 [pid 1227] <... futex resumed>) = 0 [pid 1233] creat("./bus", 000 [pid 1229] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1227] exit_group(0 executing program [pid 1237] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1233] <... creat resumed>) = 3 [pid 1229] <... futex resumed>) = ? [pid 1227] <... exit_group resumed>) = ? [pid 1233] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1237] <... openat resumed>) = 3 [pid 1237] write(3, "1000", 4) = 4 [pid 1237] close(3) = 0 [pid 1237] write(1, "executing program\n", 18) = 18 [pid 1237] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1237] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1229] +++ exited with 0 +++ [pid 1227] +++ exited with 0 +++ [pid 1231] <... futex resumed>) = 0 [pid 1233] <... futex resumed>) = 1 [pid 1233] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1231] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1227, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1231] <... futex resumed>) = 0 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1237] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1231] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1237] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1233] <... openat resumed>) = 4 [pid 1237] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1233] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1237] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1233] <... futex resumed>) = 1 [pid 1231] <... futex resumed>) = 0 [pid 1233] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1231] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1233] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1231] <... futex resumed>) = 0 [pid 1233] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1231] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1237] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1233] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1233] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1237] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1233] <... futex resumed>) = 1 [pid 1231] <... futex resumed>) = 0 [pid 1233] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1231] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1233] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1231] <... futex resumed>) = 0 [pid 1237] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1233] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1231] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1237] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1233] <... open resumed>) = 5 [pid 1233] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1237] <... clone3 resumed> => {parent_tid=[1239]}, 88) = 1239 [pid 1233] <... futex resumed>) = 1 [pid 1231] <... futex resumed>) = 0 [pid 1233] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1231] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1233] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1231] <... futex resumed>) = 0 [pid 1233] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1231] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1237] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1237] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1233] <... mmap resumed>) = 0x20000000 [pid 1237] <... futex resumed>) = 0 [pid 1237] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1238 attached [pid 1238] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1238] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1238] memfd_create("syzkaller", 0 [pid 1233] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1238] <... memfd_create resumed>) = 3 [pid 1233] <... futex resumed>) = 1 [pid 1231] <... futex resumed>) = 0 [pid 1233] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1231] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1233] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1231] <... futex resumed>) = 0 [pid 1238] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1231] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1233] memfd_create("syzkaller", 0 [pid 1238] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1233] <... memfd_create resumed>) = 6 [pid 1233] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 303] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 1236 attached [pid 1233] <... mmap resumed>) = 0x7fe6f03b1000 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 303] ioctl(3, LOOP_CLR_FD) = 0 [pid 303] close(3./strace-static-x86_64: Process 1239 attached [pid 1236] set_robust_list(0x7fe6f87d19a0, 24 [pid 1233] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 303] <... close resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1236] <... set_robust_list resumed>) = 0 [pid 1233] <... write resumed>) = 131072 [pid 1239] set_robust_list(0x7fe6f87d19a0, 24 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1240 [pid 1239] <... set_robust_list resumed>) = 0 [pid 1238] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1236] rt_sigprocmask(SIG_SETMASK, [], [pid 1233] munmap(0x7fe6f03b1000, 138412032 [pid 1239] rt_sigprocmask(SIG_SETMASK, [], [pid 1238] <... write resumed>) = 262144 [pid 1236] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1233] <... munmap resumed>) = 0 [pid 1238] munmap(0x7fe6f03b1000, 138412032 [pid 1233] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1238] <... munmap resumed>) = 0 [pid 1236] memfd_create("syzkaller", 0 [pid 1233] <... openat resumed>) = 7 [pid 1238] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1233] ioctl(7, LOOP_SET_FD, 6 [pid 1236] <... memfd_create resumed>) = 3 [pid 1233] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1238] <... openat resumed>) = 4 [pid 1238] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1238] ioctl(4, LOOP_CLR_FD) = 0 [pid 1239] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1236] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0executing program [pid 1233] ioctl(7, LOOP_CLR_FD) = 0 [pid 1236] <... mmap resumed>) = 0x7fe6f03b1000 ./strace-static-x86_64: Process 1240 attached [pid 1240] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1240] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1240] setpgid(0, 0) = 0 [pid 1240] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1240] write(3, "1000", 4) = 4 [pid 1240] close(3) = 0 [pid 1240] write(1, "executing program\n", 18) = 18 [pid 1240] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1240] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1240] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1238] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1238] close(4) = 0 [pid 1238] close(3) = 0 [pid 1236] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1233] ioctl(7, LOOP_SET_FD, 6 [pid 1238] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1233] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1235] <... futex resumed>) = 0 [pid 1233] close(7 [pid 1235] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1233] <... close resumed>) = 0 [pid 1235] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1233] close(6 [pid 1238] <... futex resumed>) = 1 [pid 1238] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 1238] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1235] <... futex resumed>) = 0 [pid 1235] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1235] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1233] <... close resumed>) = 0 [pid 1238] <... futex resumed>) = 1 [pid 1233] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1238] creat("./bus", 000 [pid 1233] <... futex resumed>) = 1 [pid 1231] <... futex resumed>) = 0 [pid 1233] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1231] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1233] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1231] <... futex resumed>) = 0 [pid 1233] mknod(0x20000000, 000 [pid 1231] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1233] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1238] <... creat resumed>) = 3 [pid 1233] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1238] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1233] <... futex resumed>) = 1 [pid 1231] <... futex resumed>) = 0 [pid 1233] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1231] exit_group(0 [pid 1238] <... futex resumed>) = 1 [pid 1235] <... futex resumed>) = 0 [pid 1231] <... exit_group resumed>) = ? [pid 1233] <... futex resumed>) = 0 [pid 1238] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1235] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1238] <... openat resumed>) = 4 [pid 1235] <... futex resumed>) = 0 [pid 1238] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1235] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1238] <... futex resumed>) = 0 [pid 1235] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1238] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1235] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1233] +++ exited with 0 +++ [pid 1231] +++ exited with 0 +++ [pid 1235] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1231, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1240] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1240] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1240] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1236] <... write resumed>) = 262144 [pid 1240] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1239] memfd_create("syzkaller", 0 [pid 1238] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1236] munmap(0x7fe6f03b1000, 138412032 [pid 1240] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1238] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1240] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1238] <... futex resumed>) = 1 [pid 1235] <... futex resumed>) = 0 [pid 1238] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1235] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... restart_syscall resumed>) = 0 [pid 1236] <... munmap resumed>) = 0 [pid 1240] <... clone3 resumed> => {parent_tid=[1241]}, 88) = 1241 [pid 1239] <... memfd_create resumed>) = 3 [pid 1238] <... open resumed>) = 5 [pid 1235] <... futex resumed>) = 0 [pid 1240] rt_sigprocmask(SIG_SETMASK, [], [pid 1239] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1238] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1236] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1235] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1240] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1238] <... futex resumed>) = 0 [pid 1235] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1240] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1239] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1238] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1236] <... openat resumed>) = 4 [pid 1235] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... openat resumed>) = 3 [pid 1240] <... futex resumed>) = 0 [pid 1238] <... mmap resumed>) = 0x20000000 [pid 1236] ioctl(4, LOOP_SET_FD, 3 [pid 1235] <... futex resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 1240] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1238] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1235] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... ioctl resumed>) = 0 [pid 1238] <... futex resumed>) = 0 [pid 1235] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 305] close(3 [pid 1238] memfd_create("syzkaller", 0 [pid 1235] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... close resumed>) = 0 [pid 1238] <... memfd_create resumed>) = 6 [pid 1235] <... futex resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1238] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1235] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1239] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1238] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1236] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1242 [pid 1239] <... write resumed>) = 262144 [pid 1238] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1236] ioctl(4, LOOP_CLR_FD [pid 1239] munmap(0x7fe6f03b1000, 138412032 [pid 1238] <... write resumed>) = 131072 [pid 1236] <... ioctl resumed>) = 0 [pid 1238] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1238] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1239] <... munmap resumed>) = 0 [pid 1238] <... openat resumed>) = 7 [pid 1238] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1238] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1242 attached [pid 1239] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1242] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1242] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1242] setpgid(0, 0) = 0 [pid 1242] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1239] <... openat resumed>) = 4 [pid 1236] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1238] ioctl(7, LOOP_SET_FD, 6 [pid 1236] close(4 [pid 1238] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1236] <... close resumed>) = 0 [pid 1238] close(7 [pid 1239] ioctl(4, LOOP_SET_FD, 3 [pid 1236] close(3 [pid 1238] <... close resumed>) = 0 [pid 1238] close(6) = 0 [pid 1236] <... close resumed>) = 0 [pid 1239] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1238] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1235] <... futex resumed>) = 0 [pid 1238] mknod(0x20000000, 000 [pid 1235] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1238] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1235] <... futex resumed>) = 0 [pid 1238] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1235] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1238] <... futex resumed>) = 0 [pid 1235] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1238] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1235] exit_group(0 [pid 1238] <... futex resumed>) = ? [pid 1235] <... exit_group resumed>) = ? [pid 1239] ioctl(4, LOOP_CLR_FD [pid 1238] +++ exited with 0 +++ [pid 1236] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1235] +++ exited with 0 +++ [pid 1242] <... openat resumed>) = 3 [pid 1239] <... ioctl resumed>) = 0 [pid 1236] <... futex resumed>) = 1 [pid 1234] <... futex resumed>) = 0 [pid 1236] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1234] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1235, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1236] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1234] <... futex resumed>) = 0 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 1236] chdir("./file0" [pid 1234] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1236] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1242] write(3, "1000", 4 [pid 1236] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1234] <... futex resumed>) = 0 [pid 1236] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1234] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1236] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1234] <... futex resumed>) = 0 [pid 1236] creat("./bus", 000 [pid 1234] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1242] <... write resumed>) = 4 [pid 1236] <... creat resumed>) = 3 [pid 1242] close(3 [pid 1236] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1242] <... close resumed>) = 0 [pid 1236] <... futex resumed>) = 1 [pid 1234] <... futex resumed>) = 0 executing program [pid 1242] write(1, "executing program\n", 18 [pid 1236] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1234] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1242] <... write resumed>) = 18 [pid 1236] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1234] <... futex resumed>) = 0 [pid 1242] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1239] ioctl(4, LOOP_SET_FD, 3 [pid 1236] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1234] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1242] <... futex resumed>) = 0 [pid 1242] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1239] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1236] <... openat resumed>) = 4 [pid 1242] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1239] close(4 [pid 1236] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1242] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1239] <... close resumed>) = 0 [pid 1236] <... futex resumed>) = 1 [pid 1234] <... futex resumed>) = 0 [pid 1242] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1239] close(3 [pid 1236] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1234] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1242] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1234] <... futex resumed>) = 0 [pid 1242] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1236] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1234] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1242] <... mprotect resumed>) = 0 [pid 1236] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1242] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1236] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1242] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1242] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[1243]}, 88) = 1243 [pid 1239] <... close resumed>) = 0 [pid 1236] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1242] rt_sigprocmask(SIG_SETMASK, [], [pid 1239] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1236] <... futex resumed>) = 1 [pid 1234] <... futex resumed>) = 0 [pid 1242] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1239] <... futex resumed>) = 1 [pid 1237] <... futex resumed>) = 0 [pid 1236] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1234] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1242] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1239] chdir("./file0" [pid 1237] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1236] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1234] <... futex resumed>) = 0 [pid 1242] <... futex resumed>) = 0 [pid 1239] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1237] <... futex resumed>) = 0 [pid 1236] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1234] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1242] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1237] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1236] <... open resumed>) = 5 [pid 1239] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1237] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1236] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1239] <... futex resumed>) = 0 [pid 1237] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1239] creat("./bus", 000 [pid 1237] <... futex resumed>) = 0 [pid 1236] <... futex resumed>) = 1 [pid 1234] <... futex resumed>) = 0 [pid 1237] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1234] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1239] <... creat resumed>) = 3 [pid 1236] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1234] <... futex resumed>) = 0 [pid 1239] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1234] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1243 attached [pid 1243] set_robust_list(0x7fe6f87d19a0, 24 [pid 1236] <... mmap resumed>) = 0x20000000 [pid 1239] <... futex resumed>) = 1 [pid 1236] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1239] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1236] <... futex resumed>) = 1 [pid 1237] <... futex resumed>) = 0 [pid 1236] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1234] <... futex resumed>) = 0 [pid 1237] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1234] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1239] <... futex resumed>) = 0 [pid 1237] <... futex resumed>) = 1 [pid 1236] <... futex resumed>) = 0 [pid 1234] <... futex resumed>) = 1 [pid 1239] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1236] memfd_create("syzkaller", 0 [pid 1237] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1234] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1243] <... set_robust_list resumed>) = 0 [pid 1239] <... openat resumed>) = 4 [pid 1243] rt_sigprocmask(SIG_SETMASK, [], [pid 1236] <... memfd_create resumed>) = 6 executing program [pid 1239] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1236] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1243] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1236] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1239] <... futex resumed>) = 1 [pid 1237] <... futex resumed>) = 0 [pid 1237] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1237] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1243] memfd_create("syzkaller", 0) = 3 [pid 1243] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 304] <... restart_syscall resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 304] ioctl(3, LOOP_CLR_FD) = 0 [pid 1239] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1236] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 304] close(3) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 1244 [pid 1236] <... write resumed>) = 131072 [pid 1239] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1236] munmap(0x7fe6f03b1000, 138412032 [pid 1243] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 1243] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1243] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 1243] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1243] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1244 attached [pid 1244] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1244] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1244] setpgid(0, 0) = 0 [pid 1244] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1244] write(3, "1000", 4) = 4 [pid 1244] close(3) = 0 [pid 1244] write(1, "executing program\n", 18) = 18 [pid 1244] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1244] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1243] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1243] close(4) = 0 [pid 1243] close(3) = 0 [pid 1244] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1244] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1244] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1244] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1243] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1242] <... futex resumed>) = 0 [pid 1242] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1242] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1243] <... futex resumed>) = 1 [pid 1243] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 1243] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1242] <... futex resumed>) = 0 [pid 1242] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1242] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1243] <... futex resumed>) = 1 [pid 1243] creat("./bus", 000 [pid 1244] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1243] <... creat resumed>) = 3 [pid 1244] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[1245]}, 88) = 1245 [pid 1243] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1244] rt_sigprocmask(SIG_SETMASK, [], [pid 1242] <... futex resumed>) = 0 [pid 1242] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1239] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1242] <... futex resumed>) = 0 [pid 1239] <... futex resumed>) = 1 [pid 1242] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1239] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1237] <... futex resumed>) = 0 [pid 1236] <... munmap resumed>) = 0 [pid 1237] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1237] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1243] <... futex resumed>) = 1 [pid 1244] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1243] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1244] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1245 attached ./strace-static-x86_64: Process 1241 attached [pid 1239] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1236] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1244] <... futex resumed>) = 0 [pid 1244] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1239] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1236] <... openat resumed>) = 7 [pid 1243] <... openat resumed>) = 4 [pid 1239] <... open resumed>) = 5 [pid 1245] set_robust_list(0x7fe6f87d19a0, 24 [pid 1241] set_robust_list(0x7fe6f87d19a0, 24 [pid 1236] ioctl(7, LOOP_SET_FD, 6 [pid 1243] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1242] <... futex resumed>) = 0 [pid 1242] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1242] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1243] <... futex resumed>) = 1 [pid 1243] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL) = -1 ENOSPC (No space left on device) [pid 1241] <... set_robust_list resumed>) = 0 [pid 1239] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1236] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1241] rt_sigprocmask(SIG_SETMASK, [], [pid 1239] <... futex resumed>) = 1 [pid 1237] <... futex resumed>) = 0 [pid 1236] ioctl(7, LOOP_CLR_FD [pid 1241] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1239] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1237] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1236] <... ioctl resumed>) = 0 [pid 1239] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1237] <... futex resumed>) = 0 [pid 1241] memfd_create("syzkaller", 0 [pid 1239] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1237] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1243] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1242] <... futex resumed>) = 0 [pid 1242] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1239] <... mmap resumed>) = 0x20000000 [pid 1242] <... futex resumed>) = 0 [pid 1241] <... memfd_create resumed>) = 3 [pid 1239] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1242] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1241] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1239] <... futex resumed>) = 1 [pid 1237] <... futex resumed>) = 0 [pid 1241] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1239] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1237] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1239] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1237] <... futex resumed>) = 0 [pid 1237] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1243] <... futex resumed>) = 1 [pid 1243] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 1243] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1239] memfd_create("syzkaller", 0 [pid 1236] ioctl(7, LOOP_SET_FD, 6 [pid 1239] <... memfd_create resumed>) = 6 [pid 1236] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1239] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1236] close(7 [pid 1239] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1236] <... close resumed>) = 0 [pid 1242] <... futex resumed>) = 0 [pid 1242] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1242] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1243] <... futex resumed>) = 1 [pid 1243] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 1243] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1242] <... futex resumed>) = 0 [pid 1242] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1242] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1243] <... futex resumed>) = 1 [pid 1243] memfd_create("syzkaller", 0) = 6 [pid 1243] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1239] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1236] close(6 [pid 1239] <... write resumed>) = 131072 [pid 1236] <... close resumed>) = 0 [pid 1239] munmap(0x7fe6f03b1000, 138412032 [pid 1236] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1234] <... futex resumed>) = 0 [pid 1234] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1239] <... munmap resumed>) = 0 [pid 1236] mknod(0x20000000, 000 [pid 1234] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1239] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1236] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1236] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1239] <... openat resumed>) = 7 [pid 1236] <... futex resumed>) = 1 [pid 1234] <... futex resumed>) = 0 [pid 1239] ioctl(7, LOOP_SET_FD, 6 [pid 1236] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1234] exit_group(0 [pid 1239] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1236] <... futex resumed>) = ? [pid 1234] <... exit_group resumed>) = ? [pid 1239] ioctl(7, LOOP_CLR_FD [pid 1236] +++ exited with 0 +++ [pid 1234] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1234, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 1241] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1239] <... ioctl resumed>) = 0 [pid 1243] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 1243] munmap(0x7fe6f03b1000, 138412032 [pid 1241] <... write resumed>) = 262144 [pid 1243] <... munmap resumed>) = 0 [pid 1243] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 7 [pid 1245] <... set_robust_list resumed>) = 0 [pid 1241] munmap(0x7fe6f03b1000, 138412032 [pid 1243] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1243] ioctl(7, LOOP_CLR_FD) = 0 [pid 1245] rt_sigprocmask(SIG_SETMASK, [], [pid 1241] <... munmap resumed>) = 0 [pid 1245] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1241] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1245] memfd_create("syzkaller", 0 [pid 1241] <... openat resumed>) = 4 [pid 1241] ioctl(4, LOOP_SET_FD, 3 [pid 1239] ioctl(7, LOOP_SET_FD, 6 [pid 1245] <... memfd_create resumed>) = 3 [pid 1243] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1243] close(7) = 0 [pid 1243] close(6 [pid 1241] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1239] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1239] close(7 [pid 1241] ioctl(4, LOOP_CLR_FD [pid 1239] <... close resumed>) = 0 [pid 1241] <... ioctl resumed>) = 0 [pid 1245] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1243] <... close resumed>) = 0 [pid 1239] close(6 [pid 1243] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1242] <... futex resumed>) = 0 [pid 1242] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1242] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1243] <... futex resumed>) = 1 [pid 1243] mknod(0x20000000, 000 [pid 1239] <... close resumed>) = 0 [pid 1243] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1239] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1243] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1239] <... futex resumed>) = 1 [pid 1237] <... futex resumed>) = 0 [pid 1239] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1237] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1245] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1239] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1237] <... futex resumed>) = 0 [pid 1239] mknod(0x20000000, 000 [pid 1237] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1239] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1242] <... futex resumed>) = 0 [pid 1239] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1242] exit_group(0) = ? [pid 1239] <... futex resumed>) = 1 [pid 1237] <... futex resumed>) = 0 [pid 1239] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1237] exit_group(0 [pid 1239] <... futex resumed>) = ? [pid 1237] <... exit_group resumed>) = ? [pid 1239] +++ exited with 0 +++ [pid 1237] +++ exited with 0 +++ [pid 1241] ioctl(4, LOOP_SET_FD, 3 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1237, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1241] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 1243] <... futex resumed>) = ? [pid 1241] close(4) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 1245] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1241] close(3 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3) = 0 [pid 1241] <... close resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1241] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1246 [pid 1243] +++ exited with 0 +++ [pid 1242] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1242, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1245] <... write resumed>) = 262144 [pid 1241] <... futex resumed>) = 1 [pid 1240] <... futex resumed>) = 0 [pid 1240] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1240] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1246 attached [pid 1241] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 1241] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1246] set_robust_list(0x5555636e06a0, 24 [pid 1241] <... futex resumed>) = 1 [pid 1240] <... futex resumed>) = 0 [pid 1240] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1240] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1246] <... set_robust_list resumed>) = 0 executing program [pid 1246] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1241] creat("./bus", 000 [pid 1246] <... prctl resumed>) = 0 [pid 1246] setpgid(0, 0) = 0 [pid 1246] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1246] write(3, "1000", 4) = 4 [pid 1246] close(3) = 0 [pid 1246] write(1, "executing program\n", 18) = 18 [pid 1246] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1246] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1246] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1246] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1246] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1246] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1246] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[1247]}, 88) = 1247 [pid 1246] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1246] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1246] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1247 attached [pid 1247] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1247] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1247] memfd_create("syzkaller", 0) = 3 [pid 1247] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1247] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 302] <... restart_syscall resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1241] <... creat resumed>) = 3 [pid 302] <... openat resumed>) = 3 [pid 1241] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] ioctl(3, LOOP_CLR_FD) = 0 [pid 1241] <... futex resumed>) = 1 [pid 302] close(3 [pid 1240] <... futex resumed>) = 0 [pid 302] <... close resumed>) = 0 [pid 1241] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1240] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1240] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1241] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1248 [pid 1247] <... write resumed>) = 262144 [pid 1241] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1247] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1241] <... openat resumed>) = 4 [pid 1247] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 1247] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1247] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1248 attached [pid 1245] munmap(0x7fe6f03b1000, 138412032 [pid 1241] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... restart_syscall resumed>) = 0 [pid 1245] <... munmap resumed>) = 0 [pid 1241] <... futex resumed>) = 1 [pid 1240] <... futex resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1245] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1241] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1240] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... openat resumed>) = 3 [pid 305] ioctl(3, LOOP_CLR_FD) = 0 [pid 305] close(3) = 0 [pid 1241] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1240] <... futex resumed>) = 0 [pid 1245] <... openat resumed>) = 4 [pid 1241] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1240] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1245] ioctl(4, LOOP_SET_FD, 3 [pid 1241] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1249 [pid 1247] ioctl(4, LOOP_SET_FD, 3 [pid 1245] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1241] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1247] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1247] close(4) = 0 [pid 1245] ioctl(4, LOOP_CLR_FD [pid 1241] <... futex resumed>) = 1 [pid 1240] <... futex resumed>) = 0 [pid 1247] close(3 [pid 1240] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1245] <... ioctl resumed>) = 0 [pid 1241] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 1240] <... futex resumed>) = 0 [pid 1240] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1241] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1240] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1241] <... futex resumed>) = 0 [pid 1247] <... close resumed>) = 0 [pid 1247] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1246] <... futex resumed>) = 0 [pid 1246] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1246] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1241] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1240] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1241] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1240] <... futex resumed>) = 0 [pid 1241] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1240] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1247] <... futex resumed>) = 1 [pid 1247] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 1241] <... mmap resumed>) = 0x20000000 [pid 1245] ioctl(4, LOOP_SET_FD, 3 [pid 1241] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1245] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1241] <... futex resumed>) = 1 [pid 1245] close(4 [pid 1240] <... futex resumed>) = 0 [pid 1241] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1245] <... close resumed>) = 0 [pid 1241] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1240] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1245] close(3 [pid 1247] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1241] memfd_create("syzkaller", 0 [pid 1240] <... futex resumed>) = 0 [pid 1246] <... futex resumed>) = 0 [pid 1246] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1246] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1247] <... futex resumed>) = 1 [pid 1247] creat("./bus", 000) = 3 [pid 1247] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1246] <... futex resumed>) = 0 [pid 1245] <... close resumed>) = 0 [pid 1240] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1246] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1245] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1241] <... memfd_create resumed>) = 6 [pid 1246] <... futex resumed>) = 0 [pid 1241] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1246] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1245] <... futex resumed>) = 1 [pid 1244] <... futex resumed>) = 0 [pid 1244] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1241] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1244] <... futex resumed>) = 0 [pid 1244] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1247] <... futex resumed>) = 1 [pid 1247] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 1247] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1246] <... futex resumed>) = 0 [pid 1246] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1246] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1247] <... futex resumed>) = 1 [pid 1247] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL) = -1 ENOSPC (No space left on device) [pid 1247] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1246] <... futex resumed>) = 0 [pid 1246] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1246] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1247] <... futex resumed>) = 1 [pid 1247] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1241] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1245] chdir("./file0" [pid 1247] <... open resumed>) = 5 [pid 1245] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1247] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1246] <... futex resumed>) = 0 [pid 1246] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1246] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1247] <... futex resumed>) = 1 [pid 1247] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 1245] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1241] <... write resumed>) = 131072 [pid 1245] <... futex resumed>) = 1 [pid 1244] <... futex resumed>) = 0 [pid 1245] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1244] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1241] munmap(0x7fe6f03b1000, 138412032 [pid 1245] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1244] <... futex resumed>) = 0 [pid 1245] creat("./bus", 000 [pid 1244] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1247] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1241] <... munmap resumed>) = 0 [pid 1246] <... futex resumed>) = 0 [pid 1246] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1245] <... creat resumed>) = 3 [pid 1241] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1246] <... futex resumed>) = 0 [pid 1245] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1246] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1245] <... futex resumed>) = 1 [pid 1244] <... futex resumed>) = 0 [pid 1241] <... openat resumed>) = 7 [pid 1245] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1244] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1245] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1244] <... futex resumed>) = 0 [pid 1241] ioctl(7, LOOP_SET_FD, 6 [pid 1245] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1244] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1247] <... futex resumed>) = 1 [pid 1247] memfd_create("syzkaller", 0 [pid 1245] <... openat resumed>) = 4 [pid 1241] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1245] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1244] <... futex resumed>) = 0 [pid 1241] ioctl(7, LOOP_CLR_FD [pid 1245] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1244] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1245] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1244] <... futex resumed>) = 0 [pid 1241] <... ioctl resumed>) = 0 [pid 1245] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1244] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1245] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1245] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1244] <... futex resumed>) = 0 [pid 1245] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1244] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1245] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1244] <... futex resumed>) = 0 [pid 1245] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1244] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1247] <... memfd_create resumed>) = 6 [pid 1245] <... open resumed>) = 5 [pid 1247] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1245] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1244] <... futex resumed>) = 0 [pid 1245] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1244] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1247] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1245] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1244] <... futex resumed>) = 0 [pid 1247] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1245] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1244] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1248] set_robust_list(0x5555636e06a0, 24 [pid 1245] <... mmap resumed>) = 0x20000000 [pid 1241] ioctl(7, LOOP_SET_FD, 6 [pid 1248] <... set_robust_list resumed>) = 0 [pid 1245] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1241] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1248] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1245] <... futex resumed>) = 1 [pid 1244] <... futex resumed>) = 0 [pid 1241] close(7 [pid 1248] <... prctl resumed>) = 0 [pid 1245] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1244] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1241] <... close resumed>) = 0 [pid 1248] setpgid(0, 0 [pid 1245] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1244] <... futex resumed>) = 0 [pid 1241] close(6 [pid 1248] <... setpgid resumed>) = 0 [pid 1245] memfd_create("syzkaller", 0 [pid 1244] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1248] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1247] <... write resumed>) = 131072 [pid 1245] <... memfd_create resumed>) = 6 [pid 1241] <... close resumed>) = 0 [pid 1248] <... openat resumed>) = 3 [pid 1245] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1241] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 executing program [pid 1248] write(3, "1000", 4 [pid 1245] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1241] <... futex resumed>) = 1 [pid 1240] <... futex resumed>) = 0 [pid 1248] <... write resumed>) = 4 [pid 1248] close(3) = 0 [pid 1247] munmap(0x7fe6f03b1000, 138412032 [pid 1248] write(1, "executing program\n", 18 [pid 1247] <... munmap resumed>) = 0 [pid 1248] <... write resumed>) = 18 [pid 1248] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1247] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1248] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1247] <... openat resumed>) = 7 [pid 1248] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1247] ioctl(7, LOOP_SET_FD, 6 [pid 1248] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1247] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1248] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1247] ioctl(7, LOOP_CLR_FD [pid 1248] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1247] <... ioctl resumed>) = 0 [pid 1248] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1248] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1245] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1241] mknod(0x20000000, 000 [pid 1240] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1248] <... mprotect resumed>) = 0 [pid 1248] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1248] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1245] <... write resumed>) = 131072 [pid 1241] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1240] <... futex resumed>) = 0 [pid 1245] munmap(0x7fe6f03b1000, 138412032 [pid 1241] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1240] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1248] <... clone3 resumed> => {parent_tid=[1250]}, 88) = 1250 [pid 1245] <... munmap resumed>) = 0 [pid 1240] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1245] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1241] <... futex resumed>) = 0 [pid 1240] exit_group(0 [pid 1248] rt_sigprocmask(SIG_SETMASK, [], [pid 1245] <... openat resumed>) = 7 [pid 1240] <... exit_group resumed>) = ? [pid 1245] ioctl(7, LOOP_SET_FD, 6 [pid 1248] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1248] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1247] ioctl(7, LOOP_SET_FD, 6 [pid 1248] <... futex resumed>) = 0 [pid 1247] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1248] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1247] close(7) = 0 [pid 1247] close(6) = 0 [pid 1245] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1241] +++ exited with 0 +++ [pid 1240] +++ exited with 0 +++ [pid 1247] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1245] ioctl(7, LOOP_CLR_FD [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1240, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 1247] <... futex resumed>) = 1 [pid 1246] <... futex resumed>) = 0 [pid 1245] <... ioctl resumed>) = 0 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1247] mknod(0x20000000, 000 [pid 1246] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1247] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1246] <... futex resumed>) = 0 [pid 1247] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1246] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1247] <... futex resumed>) = 0 [pid 1246] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1247] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1246] exit_group(0 [pid 1247] <... futex resumed>) = ? [pid 1246] <... exit_group resumed>) = ? [pid 1247] +++ exited with 0 +++ [pid 1246] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1246, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 1245] ioctl(7, LOOP_SET_FD, 6./strace-static-x86_64: Process 1250 attached ) = -1 EBUSY (Device or resource busy) [pid 1250] set_robust_list(0x7fe6f87d19a0, 24 [pid 1245] close(7 [pid 1250] <... set_robust_list resumed>) = 0 [pid 1245] <... close resumed>) = 0 ./strace-static-x86_64: Process 1249 attached [pid 1250] rt_sigprocmask(SIG_SETMASK, [], [pid 1245] close(6 [pid 1250] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1250] memfd_create("syzkaller", 0 [pid 1245] <... close resumed>) = 0 [pid 1245] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1244] <... futex resumed>) = 0 [pid 1244] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1245] mknod(0x20000000, 000 [pid 1244] <... futex resumed>) = 0 [pid 1245] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1244] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1245] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1244] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1245] <... futex resumed>) = 0 [pid 1244] exit_group(0) = ? [pid 1249] set_robust_list(0x5555636e06a0, 24 [pid 1245] +++ exited with 0 +++ [pid 1244] +++ exited with 0 +++ [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1244, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 1250] <... memfd_create resumed>) = 3 [pid 1250] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1249] <... set_robust_list resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 306] <... openat resumed>) = 3 [pid 304] <... openat resumed>) = 3 [pid 303] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 304] ioctl(3, LOOP_CLR_FD [pid 303] ioctl(3, LOOP_CLR_FD [pid 306] <... ioctl resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 306] close(3 [pid 304] close(3 [pid 303] close(3 [pid 306] <... close resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1251 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1252 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1253 [pid 1250] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 1250] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1250] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 1250] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1250] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1251 attached ./strace-static-x86_64: Process 1253 attached [pid 1253] set_robust_list(0x5555636e06a0, 24 [pid 1251] set_robust_list(0x5555636e06a0, 24 [pid 1253] <... set_robust_list resumed>) = 0 [pid 1251] <... set_robust_list resumed>) = 0 [pid 1251] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1253] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1251] <... prctl resumed>) = 0 [pid 1251] setpgid(0, 0 [pid 1253] setpgid(0, 0) = 0 [pid 1251] <... setpgid resumed>) = 0 [pid 1253] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1251] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1253] <... openat resumed>) = 3 [pid 1250] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1250] close(4) = 0 [pid 1250] close(3) = 0 [pid 1250] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1248] <... futex resumed>) = 0 [pid 1248] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1248] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1250] <... futex resumed>) = 1 [pid 1250] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 1250] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1248] <... futex resumed>) = 0 [pid 1248] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1248] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1250] <... futex resumed>) = 1 [pid 1250] creat("./bus", 000) = 3 [pid 1250] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1248] <... futex resumed>) = 0 [pid 1248] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1248] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1250] <... futex resumed>) = 1 [pid 1250] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 1250] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1252 attached [pid 1249] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1252] set_robust_list(0x5555636e06a0, 24 [pid 1249] <... prctl resumed>) = 0 [pid 1248] <... futex resumed>) = 0 [pid 1248] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1248] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1250] <... futex resumed>) = 1 [pid 1250] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1252] <... set_robust_list resumed>) = 0 [pid 1249] setpgid(0, 0 [pid 1252] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1249] <... setpgid resumed>) = 0 [pid 1251] <... openat resumed>) = 3 [pid 1252] <... prctl resumed>) = 0 [pid 1249] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1251] write(3, "1000", 4 [pid 1253] write(3, "1000", 4 [pid 1251] <... write resumed>) = 4 [pid 1253] <... write resumed>) = 4 [pid 1252] setpgid(0, 0 [pid 1249] <... openat resumed>) = 3 [pid 1252] <... setpgid resumed>) = 0 [pid 1249] write(3, "1000", 4 [pid 1250] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1250] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1252] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1249] <... write resumed>) = 4 [pid 1248] <... futex resumed>) = 0 [pid 1248] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1248] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1250] <... futex resumed>) = 1 [pid 1250] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 1250] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1248] <... futex resumed>) = 0 [pid 1248] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1248] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1250] <... futex resumed>) = 1 [pid 1250] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1252] <... openat resumed>) = 3 [pid 1249] close(3 [pid 1252] write(3, "1000", 4 [pid 1250] <... mmap resumed>) = 0x20000000 [pid 1249] <... close resumed>) = 0 [pid 1250] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1248] <... futex resumed>) = 0 [pid 1248] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 executing program [pid 1248] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1252] <... write resumed>) = 4 [pid 1249] write(1, "executing program\n", 18 [pid 1252] close(3 [pid 1249] <... write resumed>) = 18 [pid 1252] <... close resumed>) = 0 [pid 1250] <... futex resumed>) = 1 executing program [pid 1252] write(1, "executing program\n", 18 [pid 1249] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1252] <... write resumed>) = 18 [pid 1249] <... futex resumed>) = 0 [pid 1252] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1250] memfd_create("syzkaller", 0 [pid 1249] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1252] <... futex resumed>) = 0 [pid 1249] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1252] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1249] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1252] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1249] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1252] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1250] <... memfd_create resumed>) = 6 [pid 1249] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1252] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1249] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1252] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1249] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1252] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1249] <... mprotect resumed>) = 0 [pid 1252] <... mprotect resumed>) = 0 [pid 1251] close(3 [pid 1253] close(3) = 0 [pid 1249] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1252] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1251] <... close resumed>) = 0 [pid 1249] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1252] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1249] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1252] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1250] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1253] write(1, "executing program\n", 18 [pid 1249] <... clone3 resumed> => {parent_tid=[1254]}, 88) = 1254 [pid 1252] <... clone3 resumed> => {parent_tid=[1255]}, 88) = 1255 [pid 1249] rt_sigprocmask(SIG_SETMASK, [], [pid 1252] rt_sigprocmask(SIG_SETMASK, [], [pid 1249] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1252] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1249] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1252] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000executing program ) = 0 [pid 1249] <... futex resumed>) = 0 [pid 1253] <... write resumed>) = 18 [pid 1252] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1251] write(1, "executing program\n", 18 [pid 1250] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 executing program [pid 1249] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1253] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1251] <... write resumed>) = 18 [pid 1253] <... futex resumed>) = 0 [pid 1251] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1253] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1251] <... futex resumed>) = 0 [pid 1253] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1251] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1253] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1251] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1253] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1251] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1253] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1251] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1253] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1251] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1253] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1251] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1253] <... mprotect resumed>) = 0 [pid 1251] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1253] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1251] <... mprotect resumed>) = 0 [pid 1253] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1251] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1250] <... write resumed>) = 131072 [pid 1253] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1251] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1251] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0}./strace-static-x86_64: Process 1255 attached [pid 1253] <... clone3 resumed> => {parent_tid=[1256]}, 88) = 1256 [pid 1253] rt_sigprocmask(SIG_SETMASK, [], [pid 1251] <... clone3 resumed> => {parent_tid=[1257]}, 88) = 1257 [pid 1253] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1251] rt_sigprocmask(SIG_SETMASK, [], [pid 1255] set_robust_list(0x7fe6f87d19a0, 24 [pid 1250] munmap(0x7fe6f03b1000, 138412032 [pid 1255] <... set_robust_list resumed>) = 0 [pid 1253] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1251] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1250] <... munmap resumed>) = 0 [pid 1253] <... futex resumed>) = 0 [pid 1251] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1250] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1253] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1251] <... futex resumed>) = 0 [pid 1250] <... openat resumed>) = 7 [pid 1255] rt_sigprocmask(SIG_SETMASK, [], [pid 1251] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1250] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1250] ioctl(7, LOOP_CLR_FD) = 0 [pid 1255] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 1257 attached [pid 1257] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1257] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1257] memfd_create("syzkaller", 0 [pid 1255] memfd_create("syzkaller", 0 [pid 1257] <... memfd_create resumed>) = 3 ./strace-static-x86_64: Process 1254 attached [pid 1255] <... memfd_create resumed>) = 3 [pid 1250] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1250] close(7) = 0 [pid 1250] close(6) = 0 [pid 1250] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1248] <... futex resumed>) = 0 [pid 1250] mknod(0x20000000, 000 [pid 1248] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1250] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1248] <... futex resumed>) = 0 [pid 1250] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1248] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1250] <... futex resumed>) = 0 [pid 1248] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1250] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1248] exit_group(0 [pid 1250] <... futex resumed>) = ? [pid 1248] <... exit_group resumed>) = ? [pid 1250] +++ exited with 0 +++ [pid 1248] +++ exited with 0 +++ [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1248, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 1257] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1257] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 1256 attached [pid 1256] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1256] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1256] memfd_create("syzkaller", 0) = 3 [pid 1256] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1257] <... write resumed>) = 262144 [pid 1255] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1254] set_robust_list(0x7fe6f87d19a0, 24 [pid 1257] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1256] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1255] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1254] <... set_robust_list resumed>) = 0 [pid 1257] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 1257] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1257] ioctl(4, LOOP_CLR_FD) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 302] ioctl(3, LOOP_CLR_FD) = 0 [pid 302] close(3) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1255] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1254] rt_sigprocmask(SIG_SETMASK, [], [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1258 [pid 1256] <... write resumed>) = 262144 [pid 1254] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1256] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1256] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 1256] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1256] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1258 attached [pid 1255] <... write resumed>) = 262144 [pid 1258] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1254] memfd_create("syzkaller", 0) = 3 [pid 1255] munmap(0x7fe6f03b1000, 138412032 [pid 1254] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1255] <... munmap resumed>) = 0 [pid 1255] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1254] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1257] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1257] close(4) = 0 [pid 1257] close(3) = 0 [pid 1257] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1251] <... futex resumed>) = 0 [pid 1251] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1251] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1257] <... futex resumed>) = 1 [pid 1257] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 1257] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1251] <... futex resumed>) = 0 [pid 1251] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1251] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1257] <... futex resumed>) = 1 [pid 1257] creat("./bus", 000) = 3 [pid 1257] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1251] <... futex resumed>) = 0 [pid 1251] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1251] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1257] <... futex resumed>) = 1 [pid 1257] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1254] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1257] <... openat resumed>) = 4 [pid 1257] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1251] <... futex resumed>) = 0 [pid 1251] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1251] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1257] <... futex resumed>) = 1 [pid 1256] ioctl(4, LOOP_SET_FD, 3 [pid 1257] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1256] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1256] close(4 [pid 1254] <... write resumed>) = 262144 [pid 1256] <... close resumed>) = 0 [pid 1256] close(3) = 0 [pid 1255] <... openat resumed>) = 4 [pid 1254] munmap(0x7fe6f03b1000, 138412032 [pid 1256] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1253] <... futex resumed>) = 0 [pid 1253] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1253] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1256] <... futex resumed>) = 1 [pid 1256] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 1256] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1253] <... futex resumed>) = 0 [pid 1253] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1253] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1256] <... futex resumed>) = 1 [pid 1255] ioctl(4, LOOP_SET_FD, 3 [pid 1254] <... munmap resumed>) = 0 [pid 1256] creat("./bus", 000 [pid 1255] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1254] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1256] <... creat resumed>) = 3 [pid 1255] ioctl(4, LOOP_CLR_FD [pid 1256] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1254] <... openat resumed>) = 4 [pid 1255] <... ioctl resumed>) = 0 [pid 1256] <... futex resumed>) = 1 [pid 1253] <... futex resumed>) = 0 [pid 1256] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1254] ioctl(4, LOOP_SET_FD, 3 [pid 1253] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1256] <... openat resumed>) = 4 [pid 1254] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1253] <... futex resumed>) = 0 [pid 1256] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1253] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1256] <... futex resumed>) = 0 [pid 1254] ioctl(4, LOOP_CLR_FD [pid 1253] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1256] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1253] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1253] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1257] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1256] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1254] <... ioctl resumed>) = 0 [pid 1257] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1256] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1257] <... futex resumed>) = 1 [pid 1256] <... futex resumed>) = 1 [pid 1253] <... futex resumed>) = 0 [pid 1251] <... futex resumed>) = 0 [pid 1257] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1256] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1253] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1251] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1257] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1256] <... open resumed>) = 5 [pid 1253] <... futex resumed>) = 0 [pid 1251] <... futex resumed>) = 0 [pid 1257] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1256] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1255] ioctl(4, LOOP_SET_FD, 3 [pid 1253] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1251] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1257] <... open resumed>) = 5 [pid 1256] <... futex resumed>) = 0 [pid 1255] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1253] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1257] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1256] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1255] close(4 [pid 1253] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1257] <... futex resumed>) = 1 [pid 1256] <... mmap resumed>) = 0x20000000 [pid 1255] <... close resumed>) = 0 [pid 1253] <... futex resumed>) = 0 [pid 1251] <... futex resumed>) = 0 [pid 1257] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1256] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1255] close(3 [pid 1253] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1251] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1258] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1257] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1256] <... futex resumed>) = 0 [pid 1255] <... close resumed>) = 0 [pid 1253] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1251] <... futex resumed>) = 0 [pid 1258] <... prctl resumed>) = 0 [pid 1257] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1256] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1255] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1254] ioctl(4, LOOP_SET_FD, 3 [pid 1253] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1251] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1258] setpgid(0, 0 [pid 1257] <... mmap resumed>) = 0x20000000 [pid 1256] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1255] <... futex resumed>) = 1 [pid 1254] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1253] <... futex resumed>) = 0 [pid 1252] <... futex resumed>) = 0 [pid 1258] <... setpgid resumed>) = 0 [pid 1257] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1256] memfd_create("syzkaller", 0 [pid 1255] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1254] close(4 [pid 1253] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1252] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1258] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1257] <... futex resumed>) = 1 [pid 1256] <... memfd_create resumed>) = 6 [pid 1255] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1254] <... close resumed>) = 0 [pid 1252] <... futex resumed>) = 0 [pid 1251] <... futex resumed>) = 0 [pid 1258] <... openat resumed>) = 3 [pid 1257] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1256] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1255] chdir("./file0" [pid 1254] close(3 [pid 1252] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1251] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1258] write(3, "1000", 4 [pid 1257] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1256] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1255] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1254] <... close resumed>) = 0 [pid 1251] <... futex resumed>) = 0 [pid 1258] <... write resumed>) = 4 [pid 1257] memfd_create("syzkaller", 0 [pid 1255] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1254] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1251] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1255] <... futex resumed>) = 1 [pid 1254] <... futex resumed>) = 1 [pid 1252] <... futex resumed>) = 0 [pid 1249] <... futex resumed>) = 0 [pid 1257] <... memfd_create resumed>) = 6 [pid 1255] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1254] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1252] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1249] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1258] close(3 [pid 1257] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1256] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1255] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1254] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1252] <... futex resumed>) = 0 [pid 1249] <... futex resumed>) = 0 [pid 1258] <... close resumed>) = 0 [pid 1257] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1256] <... write resumed>) = 131072 [pid 1255] creat("./bus", 000 [pid 1254] chdir("./file0" [pid 1252] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1249] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1258] write(1, "executing program\n", 18 [pid 1255] <... creat resumed>) = 3 [pid 1254] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1255] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1254] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1255] <... futex resumed>) = 1 [pid 1254] <... futex resumed>) = 1 executing program [pid 1252] <... futex resumed>) = 0 [pid 1249] <... futex resumed>) = 0 [pid 1258] <... write resumed>) = 18 [pid 1257] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1256] munmap(0x7fe6f03b1000, 138412032 [pid 1255] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1254] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1252] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1249] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1258] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1255] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1254] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1252] <... futex resumed>) = 0 [pid 1249] <... futex resumed>) = 0 [pid 1258] <... futex resumed>) = 0 [pid 1257] <... write resumed>) = 131072 [pid 1256] <... munmap resumed>) = 0 [pid 1255] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1254] creat("./bus", 000 [pid 1252] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1249] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1258] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1257] munmap(0x7fe6f03b1000, 138412032 [pid 1256] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1255] <... openat resumed>) = 4 [pid 1254] <... creat resumed>) = 3 [pid 1258] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1257] <... munmap resumed>) = 0 [pid 1256] <... openat resumed>) = 7 [pid 1255] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1254] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1258] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1257] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1256] ioctl(7, LOOP_SET_FD, 6 [pid 1255] <... futex resumed>) = 1 [pid 1254] <... futex resumed>) = 1 [pid 1252] <... futex resumed>) = 0 [pid 1249] <... futex resumed>) = 0 [pid 1258] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1257] <... openat resumed>) = 7 [pid 1256] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1255] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1254] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1252] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1249] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1258] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1257] ioctl(7, LOOP_SET_FD, 6 [pid 1256] ioctl(7, LOOP_CLR_FD [pid 1255] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1254] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1252] <... futex resumed>) = 0 [pid 1249] <... futex resumed>) = 0 [pid 1258] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1257] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1256] <... ioctl resumed>) = 0 [pid 1255] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1254] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1252] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1249] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1258] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1257] ioctl(7, LOOP_CLR_FD [pid 1255] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1254] <... openat resumed>) = 4 [pid 1258] <... mprotect resumed>) = 0 [pid 1257] <... ioctl resumed>) = 0 [pid 1255] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1254] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1258] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1255] <... futex resumed>) = 1 [pid 1254] <... futex resumed>) = 1 [pid 1252] <... futex resumed>) = 0 [pid 1249] <... futex resumed>) = 0 [pid 1258] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1255] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1254] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1252] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1249] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1258] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1255] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1254] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1252] <... futex resumed>) = 0 [pid 1249] <... futex resumed>) = 0 [pid 1255] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1254] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1252] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1249] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1258] <... clone3 resumed> => {parent_tid=[1259]}, 88) = 1259 [pid 1256] ioctl(7, LOOP_SET_FD, 6 [pid 1255] <... open resumed>) = 5 [pid 1254] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1258] rt_sigprocmask(SIG_SETMASK, [], [pid 1257] ioctl(7, LOOP_SET_FD, 6 [pid 1256] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1255] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1254] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1258] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1257] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1256] close(7 [pid 1255] <... futex resumed>) = 1 [pid 1254] <... futex resumed>) = 1 [pid 1252] <... futex resumed>) = 0 [pid 1249] <... futex resumed>) = 0 [pid 1258] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1257] close(7 [pid 1256] <... close resumed>) = 0 [pid 1255] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1254] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1252] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1249] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1258] <... futex resumed>) = 0 [pid 1257] <... close resumed>) = 0 [pid 1256] close(6 [pid 1255] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1254] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1252] <... futex resumed>) = 0 [pid 1249] <... futex resumed>) = 0 [pid 1258] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1257] close(6 [pid 1255] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1254] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1252] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1249] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1257] <... close resumed>) = 0 [pid 1256] <... close resumed>) = 0 [pid 1255] <... mmap resumed>) = 0x20000000 [pid 1254] <... open resumed>) = 5 [pid 1257] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1256] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1255] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1254] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1257] <... futex resumed>) = 1 [pid 1256] <... futex resumed>) = 1 [pid 1255] <... futex resumed>) = 1 [pid 1254] <... futex resumed>) = 1 [pid 1253] <... futex resumed>) = 0 [pid 1252] <... futex resumed>) = 0 [pid 1251] <... futex resumed>) = 0 [pid 1249] <... futex resumed>) = 0 [pid 1257] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1256] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1255] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1254] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1253] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1252] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1251] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1249] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1255] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1254] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1252] <... futex resumed>) = 0 [pid 1249] <... futex resumed>) = 0 [pid 1255] memfd_create("syzkaller", 0 [pid 1254] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1252] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1249] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1255] <... memfd_create resumed>) = 6 [pid 1254] <... mmap resumed>) = 0x20000000 [pid 1255] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1254] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1255] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1254] <... futex resumed>) = 1 [pid 1249] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1259 attached [pid 1255] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1254] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1249] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1259] set_robust_list(0x7fe6f87d19a0, 24 [pid 1255] <... write resumed>) = 131072 [pid 1254] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1249] <... futex resumed>) = 0 [pid 1259] <... set_robust_list resumed>) = 0 [pid 1255] munmap(0x7fe6f03b1000, 138412032 [pid 1254] memfd_create("syzkaller", 0 [pid 1249] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1259] rt_sigprocmask(SIG_SETMASK, [], [pid 1257] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1256] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1255] <... munmap resumed>) = 0 [pid 1254] <... memfd_create resumed>) = 6 [pid 1253] <... futex resumed>) = 0 [pid 1251] <... futex resumed>) = 0 [pid 1259] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1257] mknod(0x20000000, 000 [pid 1256] mknod(0x20000000, 000 [pid 1255] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1254] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1253] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1251] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1259] memfd_create("syzkaller", 0 [pid 1257] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1256] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1255] <... openat resumed>) = 7 [pid 1254] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1259] <... memfd_create resumed>) = 3 [pid 1257] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1256] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1255] ioctl(7, LOOP_SET_FD, 6 [pid 1254] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1259] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1257] <... futex resumed>) = 1 [pid 1256] <... futex resumed>) = 1 [pid 1255] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1254] <... write resumed>) = 131072 [pid 1253] <... futex resumed>) = 0 [pid 1251] <... futex resumed>) = 0 [pid 1259] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1257] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1256] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1255] ioctl(7, LOOP_CLR_FD [pid 1254] munmap(0x7fe6f03b1000, 138412032 [pid 1253] exit_group(0 [pid 1259] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1255] <... ioctl resumed>) = 0 [pid 1254] <... munmap resumed>) = 0 [pid 1251] exit_group(0 [pid 1253] <... exit_group resumed>) = ? [pid 1256] <... futex resumed>) = 231 [pid 1254] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1251] <... exit_group resumed>) = ? [pid 1254] <... openat resumed>) = 7 [pid 1259] <... write resumed>) = 262144 [pid 1257] <... futex resumed>) = ? [pid 1256] +++ exited with 0 +++ [pid 1254] ioctl(7, LOOP_SET_FD, 6 [pid 1253] +++ exited with 0 +++ [pid 1255] ioctl(7, LOOP_SET_FD, 6 [pid 1254] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1255] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1254] ioctl(7, LOOP_CLR_FD [pid 1257] +++ exited with 0 +++ [pid 1255] close(7 [pid 1254] <... ioctl resumed>) = 0 [pid 1251] +++ exited with 0 +++ [pid 1255] <... close resumed>) = 0 [pid 1255] close(6 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1253, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 1255] <... close resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1251, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1255] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 1259] munmap(0x7fe6f03b1000, 138412032 [pid 1255] <... futex resumed>) = 1 [pid 1252] <... futex resumed>) = 0 [pid 1259] <... munmap resumed>) = 0 [pid 1255] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1252] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... openat resumed>) = 3 [pid 1259] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1255] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1254] ioctl(7, LOOP_SET_FD, 6 [pid 1252] <... futex resumed>) = 0 [pid 303] ioctl(3, LOOP_CLR_FD [pid 1259] <... openat resumed>) = 4 [pid 1255] mknod(0x20000000, 000 [pid 1254] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1252] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... ioctl resumed>) = 0 [pid 1259] ioctl(4, LOOP_SET_FD, 3 [pid 1255] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1254] close(7 [pid 303] close(3 [pid 1259] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1255] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1254] <... close resumed>) = 0 [pid 1259] ioctl(4, LOOP_CLR_FD [pid 1255] <... futex resumed>) = 1 [pid 1254] close(6 [pid 1252] <... futex resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 1259] <... ioctl resumed>) = 0 [pid 1255] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1254] <... close resumed>) = 0 [pid 1252] exit_group(0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1255] <... futex resumed>) = ? [pid 1254] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1252] <... exit_group resumed>) = ? [pid 1255] +++ exited with 0 +++ [pid 1254] <... futex resumed>) = 1 [pid 1252] +++ exited with 0 +++ [pid 1249] <... futex resumed>) = 0 [pid 1254] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1249] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1252, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1260 [pid 1254] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1249] <... futex resumed>) = 0 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 1259] ioctl(4, LOOP_SET_FD, 3 [pid 1254] mknod(0x20000000, 000 [pid 1249] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1259] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1254] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1259] close(4 [pid 1254] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1259] <... close resumed>) = 0 [pid 1254] <... futex resumed>) = 1 [pid 1249] <... futex resumed>) = 0 [pid 1259] close(3 [pid 1254] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1249] exit_group(0 [pid 1259] <... close resumed>) = 0 [pid 1254] <... futex resumed>) = ? [pid 1249] <... exit_group resumed>) = ? [pid 1259] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1254] +++ exited with 0 +++ [pid 1249] +++ exited with 0 +++ [pid 1259] <... futex resumed>) = 1 [pid 1258] <... futex resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1249, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1258] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1259] chdir("./file0" [pid 1258] <... futex resumed>) = 0 [pid 1259] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1258] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1259] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1258] <... futex resumed>) = 0 [pid 1259] creat("./bus", 000 [pid 1258] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1259] <... creat resumed>) = 3 [pid 1258] <... futex resumed>) = 0 [pid 1259] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1258] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1260 attached [pid 1259] <... futex resumed>) = 0 [pid 1258] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1259] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1258] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1260] set_robust_list(0x5555636e06a0, 24 [pid 1259] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1258] <... futex resumed>) = 0 [pid 1260] <... set_robust_list resumed>) = 0 [pid 1259] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1258] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1260] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1259] <... openat resumed>) = 4 [pid 1259] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1258] <... futex resumed>) = 0 [pid 1260] <... prctl resumed>) = 0 [pid 1258] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1259] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1260] setpgid(0, 0 [pid 1259] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1258] <... futex resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 1260] <... setpgid resumed>) = 0 [pid 1258] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1259] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... restart_syscall resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1260] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1259] <... futex resumed>) = 1 [pid 306] <... openat resumed>) = 3 [pid 1260] <... openat resumed>) = 3 [pid 1259] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1258] <... futex resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1260] write(3, "1000", 4 [pid 1258] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... ioctl resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1260] <... write resumed>) = 4 [pid 1259] <... futex resumed>) = 0 [pid 1258] <... futex resumed>) = 1 [pid 306] close(3 [pid 305] <... openat resumed>) = 3 [pid 1260] close(3 [pid 1259] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1258] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... close resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 304] <... openat resumed>) = 3 [pid 1260] <... close resumed>) = 0 [pid 1259] <... open resumed>) = 5 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... ioctl resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 1259] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1259] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 305] close(3 [pid 304] <... ioctl resumed>) = 0 [pid 1258] <... futex resumed>) = 0 [pid 1260] write(1, "executing program\n", 18 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1261 [pid 1258] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... close resumed>) = 0 executing program [pid 304] close(3 [pid 1260] <... write resumed>) = 18 [pid 1259] <... futex resumed>) = 0 [pid 1258] <... futex resumed>) = 1 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1259] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1258] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... close resumed>) = 0 [pid 1260] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1259] <... mmap resumed>) = 0x20000000 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1260] <... futex resumed>) = 0 [pid 1259] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1262 [pid 1259] <... futex resumed>) = 1 [pid 1258] <... futex resumed>) = 0 [pid 1260] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1259] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1258] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1259] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1258] <... futex resumed>) = 0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1263 [pid 1260] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1259] memfd_create("syzkaller", 0 [pid 1258] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1260] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1259] <... memfd_create resumed>) = 6 [pid 1260] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1259] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1260] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1259] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1260] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1259] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072./strace-static-x86_64: Process 1263 attached [pid 1260] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1259] <... write resumed>) = 131072 [pid 1263] set_robust_list(0x5555636e06a0, 24 [pid 1260] <... mprotect resumed>) = 0 [pid 1259] munmap(0x7fe6f03b1000, 138412032 [pid 1263] <... set_robust_list resumed>) = 0 [pid 1260] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1259] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 1262 attached [pid 1263] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1260] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1259] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1263] <... prctl resumed>) = 0 [pid 1262] set_robust_list(0x5555636e06a0, 24 [pid 1260] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1259] <... openat resumed>) = 7 ./strace-static-x86_64: Process 1261 attached [pid 1263] setpgid(0, 0 [pid 1262] <... set_robust_list resumed>) = 0 [pid 1259] ioctl(7, LOOP_SET_FD, 6 [pid 1263] <... setpgid resumed>) = 0 [pid 1262] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1261] set_robust_list(0x5555636e06a0, 24 [pid 1260] <... clone3 resumed> => {parent_tid=[1264]}, 88) = 1264 [pid 1259] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1263] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1262] <... prctl resumed>) = 0 [pid 1261] <... set_robust_list resumed>) = 0 [pid 1260] rt_sigprocmask(SIG_SETMASK, [], [pid 1259] ioctl(7, LOOP_CLR_FD [pid 1263] <... openat resumed>) = 3 [pid 1262] setpgid(0, 0 [pid 1261] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1260] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1259] <... ioctl resumed>) = 0 [pid 1263] write(3, "1000", 4 [pid 1262] <... setpgid resumed>) = 0 [pid 1261] <... prctl resumed>) = 0 [pid 1260] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1261] setpgid(0, 0) = 0 [pid 1261] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1261] write(3, "1000", 4) = 4 [pid 1261] close(3executing program ) = 0 [pid 1259] ioctl(7, LOOP_SET_FD, 6 [pid 1261] write(1, "executing program\n", 18 [pid 1259] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1261] <... write resumed>) = 18 [pid 1259] close(7 [pid 1261] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1259] <... close resumed>) = 0 [pid 1261] <... futex resumed>) = 0 [pid 1259] close(6 [pid 1261] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1259] <... close resumed>) = 0 [pid 1261] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1259] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1261] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1259] <... futex resumed>) = 1 [pid 1258] <... futex resumed>) = 0 [pid 1261] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1259] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1258] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1261] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1259] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1258] <... futex resumed>) = 0 [pid 1261] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1259] mknod(0x20000000, 000 [pid 1258] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1261] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1259] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1261] <... mprotect resumed>) = 0 [pid 1259] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1261] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1259] <... futex resumed>) = 1 [pid 1258] <... futex resumed>) = 0 [pid 1261] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1260] <... futex resumed>) = 0 [pid 1259] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1258] exit_group(0 [pid 1261] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1260] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1259] <... futex resumed>) = ? executing program [pid 1258] <... exit_group resumed>) = ? [pid 1263] <... write resumed>) = 4 [pid 1262] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1259] +++ exited with 0 +++ [pid 1258] +++ exited with 0 +++ [pid 1263] close(3 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1258, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1263] <... close resumed>) = 0 [pid 1263] write(1, "executing program\n", 18 [pid 1262] <... openat resumed>) = 3 [pid 1263] <... write resumed>) = 18 ./strace-static-x86_64: Process 1264 attached [pid 1261] <... clone3 resumed> => {parent_tid=[1265]}, 88) = 1265 [pid 1264] set_robust_list(0x7fe6f87d19a0, 24 [pid 1261] rt_sigprocmask(SIG_SETMASK, [], [pid 1264] <... set_robust_list resumed>) = 0 [pid 1263] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1262] write(3, "1000", 4 [pid 1261] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1264] rt_sigprocmask(SIG_SETMASK, [], [pid 1263] <... futex resumed>) = 0 [pid 1261] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1264] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1263] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1262] <... write resumed>) = 4 [pid 1261] <... futex resumed>) = 0 [pid 1264] memfd_create("syzkaller", 0 [pid 1263] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1262] close(3 [pid 1261] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}executing program [pid 1264] <... memfd_create resumed>) = 3 [pid 1263] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1262] <... close resumed>) = 0 [pid 1263] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1262] write(1, "executing program\n", 18 [pid 1263] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1262] <... write resumed>) = 18 [pid 1263] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1264] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1263] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1262] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1264] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1263] <... mprotect resumed>) = 0 [pid 1262] <... futex resumed>) = 0 [pid 1264] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1263] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1262] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1263] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1262] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1263] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1262] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1264] <... write resumed>) = 262144 [pid 1262] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1263] <... clone3 resumed> => {parent_tid=[1266]}, 88) = 1266 [pid 1262] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1263] rt_sigprocmask(SIG_SETMASK, [], [pid 1262] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1263] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1262] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1263] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1262] <... mprotect resumed>) = 0 [pid 1263] <... futex resumed>) = 0 [pid 1263] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1262] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1262] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0}./strace-static-x86_64: Process 1265 attached [pid 1265] set_robust_list(0x7fe6f87d19a0, 24 [pid 1262] <... clone3 resumed> => {parent_tid=[1267]}, 88) = 1267 [pid 1265] <... set_robust_list resumed>) = 0 [pid 1262] rt_sigprocmask(SIG_SETMASK, [], [pid 1265] rt_sigprocmask(SIG_SETMASK, [], [pid 1262] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1265] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1262] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1265] memfd_create("syzkaller", 0 [pid 1262] <... futex resumed>) = 0 [pid 1265] <... memfd_create resumed>) = 3 [pid 1262] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1265] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1264] munmap(0x7fe6f03b1000, 138412032 [pid 1265] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1264] <... munmap resumed>) = 0 [pid 1265] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1264] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 1264] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 1266 attached ) = -1 EBUSY (Device or resource busy) [pid 1266] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1264] ioctl(4, LOOP_CLR_FD [pid 1266] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1264] <... ioctl resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 1266] memfd_create("syzkaller", 0 [pid 1265] <... write resumed>) = 262144 [pid 302] ioctl(3, LOOP_CLR_FD [pid 1266] <... memfd_create resumed>) = 3 [pid 302] <... ioctl resumed>) = 0 [pid 1266] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 302] close(3 [pid 1266] <... mmap resumed>) = 0x7fe6f03b1000 [pid 302] <... close resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1264] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1264] close(4) = 0 [pid 1264] close(3 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1268 [pid 1264] <... close resumed>) = 0 [pid 1264] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1260] <... futex resumed>) = 0 [pid 1264] chdir("./file0" [pid 1260] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1264] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1260] <... futex resumed>) = 0 [pid 1264] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1260] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1264] <... futex resumed>) = 0 [pid 1260] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1266] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1264] creat("./bus", 000 [pid 1260] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1264] <... creat resumed>) = 3 [pid 1260] <... futex resumed>) = 0 [pid 1264] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1260] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1264] <... futex resumed>) = 0 [pid 1260] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1265] munmap(0x7fe6f03b1000, 138412032 [pid 1264] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1260] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1266] <... write resumed>) = 262144 [pid 1265] <... munmap resumed>) = 0 [pid 1264] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1260] <... futex resumed>) = 0 [pid 1260] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1266] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1265] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1264] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1266] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1265] <... openat resumed>) = 4 [pid 1264] <... openat resumed>) = 4 [pid 1266] <... openat resumed>) = 4 [pid 1265] ioctl(4, LOOP_SET_FD, 3 [pid 1264] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1266] ioctl(4, LOOP_SET_FD, 3 [pid 1265] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1264] <... futex resumed>) = 1 [pid 1260] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1267 attached [pid 1266] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1265] ioctl(4, LOOP_CLR_FD [pid 1264] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1260] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1267] set_robust_list(0x7fe6f87d19a0, 24 [pid 1266] ioctl(4, LOOP_CLR_FD [pid 1265] <... ioctl resumed>) = 0 [pid 1264] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1260] <... futex resumed>) = 0 [pid 1267] <... set_robust_list resumed>) = 0 [pid 1266] <... ioctl resumed>) = 0 [pid 1264] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1260] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1267] rt_sigprocmask(SIG_SETMASK, [], [pid 1264] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1267] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1264] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1267] memfd_create("syzkaller", 0 [pid 1264] <... futex resumed>) = 1 [pid 1260] <... futex resumed>) = 0 [pid 1267] <... memfd_create resumed>) = 3 [pid 1264] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1260] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1267] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1264] <... open resumed>) = 5 [pid 1260] <... futex resumed>) = 0 [pid 1267] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1265] ioctl(4, LOOP_SET_FD, 3 [pid 1264] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1260] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1268 attached [pid 1267] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1265] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1264] <... futex resumed>) = 0 [pid 1260] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1268] set_robust_list(0x5555636e06a0, 24 [pid 1266] ioctl(4, LOOP_SET_FD, 3 [pid 1265] close(4 [pid 1264] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1260] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1268] <... set_robust_list resumed>) = 0 [pid 1266] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1265] <... close resumed>) = 0 [pid 1264] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1260] <... futex resumed>) = 0 [pid 1268] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1266] close(4 [pid 1265] close(3 [pid 1264] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1260] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1268] <... prctl resumed>) = 0 [pid 1266] <... close resumed>) = 0 [pid 1265] <... close resumed>) = 0 [pid 1264] <... mmap resumed>) = 0x20000000 [pid 1268] setpgid(0, 0 [pid 1266] close(3 [pid 1265] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1264] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1268] <... setpgid resumed>) = 0 [pid 1267] <... write resumed>) = 262144 [pid 1266] <... close resumed>) = 0 [pid 1265] <... futex resumed>) = 1 [pid 1264] <... futex resumed>) = 1 [pid 1261] <... futex resumed>) = 0 [pid 1260] <... futex resumed>) = 0 [pid 1268] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1266] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1265] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1264] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1261] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1260] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1268] <... openat resumed>) = 3 [pid 1266] <... futex resumed>) = 1 [pid 1265] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1264] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1263] <... futex resumed>) = 0 [pid 1261] <... futex resumed>) = 0 [pid 1260] <... futex resumed>) = 0 [pid 1268] write(3, "1000", 4 [pid 1266] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1265] chdir("./file0" [pid 1264] memfd_create("syzkaller", 0 [pid 1263] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1261] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1268] <... write resumed>) = 4 [pid 1267] munmap(0x7fe6f03b1000, 138412032 [pid 1266] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1265] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1264] <... memfd_create resumed>) = 6 [pid 1263] <... futex resumed>) = 0 [pid 1260] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1268] close(3 [pid 1267] <... munmap resumed>) = 0 [pid 1266] chdir("./file0" [pid 1265] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1264] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1263] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1268] <... close resumed>) = 0 [pid 1267] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1266] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1265] <... futex resumed>) = 1 [pid 1264] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1261] <... futex resumed>) = 0 [pid 1268] write(1, "executing program\n", 18 [pid 1267] <... openat resumed>) = 4 [pid 1266] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1265] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1264] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1261] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1267] ioctl(4, LOOP_SET_FD, 3 [pid 1265] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1264] <... write resumed>) = 131072 [pid 1261] <... futex resumed>) = 0 [pid 1267] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1265] creat("./bus", 000 [pid 1264] munmap(0x7fe6f03b1000, 138412032 [pid 1261] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1267] ioctl(4, LOOP_CLR_FD [pid 1265] <... creat resumed>) = 3 [pid 1264] <... munmap resumed>) = 0 [pid 1267] <... ioctl resumed>) = 0 [pid 1265] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1264] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1265] <... futex resumed>) = 1 [pid 1264] <... openat resumed>) = 7 [pid 1261] <... futex resumed>) = 0 [pid 1265] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1264] ioctl(7, LOOP_SET_FD, 6 [pid 1261] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1265] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1264] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1261] <... futex resumed>) = 0 [pid 1265] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1264] ioctl(7, LOOP_CLR_FD [pid 1261] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1266] <... futex resumed>) = 1 [pid 1265] <... openat resumed>) = 4 executing program [pid 1264] <... ioctl resumed>) = 0 [pid 1268] <... write resumed>) = 18 [pid 1266] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1265] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1263] <... futex resumed>) = 0 [pid 1268] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1267] ioctl(4, LOOP_SET_FD, 3 [pid 1265] <... futex resumed>) = 1 [pid 1263] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1261] <... futex resumed>) = 0 [pid 1268] <... futex resumed>) = 0 [pid 1267] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1266] <... futex resumed>) = 0 [pid 1265] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1263] <... futex resumed>) = 1 [pid 1261] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1268] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1267] close(4 [pid 1266] creat("./bus", 000 [pid 1265] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1263] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1261] <... futex resumed>) = 0 [pid 1268] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1267] <... close resumed>) = 0 [pid 1266] <... creat resumed>) = 3 [pid 1265] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1261] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1268] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1267] close(3 [pid 1266] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1265] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1264] ioctl(7, LOOP_SET_FD, 6 [pid 1268] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1267] <... close resumed>) = 0 [pid 1266] <... futex resumed>) = 1 [pid 1265] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1264] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1263] <... futex resumed>) = 0 [pid 1268] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1267] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1266] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1265] <... futex resumed>) = 1 [pid 1264] close(7 [pid 1261] <... futex resumed>) = 0 [pid 1268] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1267] <... futex resumed>) = 1 [pid 1266] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1265] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1264] <... close resumed>) = 0 [pid 1263] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1262] <... futex resumed>) = 0 [pid 1261] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1268] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1267] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1266] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1265] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1264] close(6 [pid 1263] <... futex resumed>) = 0 [pid 1262] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1261] <... futex resumed>) = 0 [pid 1268] <... mprotect resumed>) = 0 [pid 1267] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1266] <... openat resumed>) = 4 [pid 1265] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1264] <... close resumed>) = 0 [pid 1263] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1262] <... futex resumed>) = 0 [pid 1261] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1268] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1267] chdir("./file0" [pid 1266] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1265] <... open resumed>) = 5 [pid 1264] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1263] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1262] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1268] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1267] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1266] <... futex resumed>) = 0 [pid 1265] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1264] <... futex resumed>) = 1 [pid 1263] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1260] <... futex resumed>) = 0 [pid 1268] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1267] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1266] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1265] <... futex resumed>) = 1 [pid 1264] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1263] <... futex resumed>) = 0 [pid 1261] <... futex resumed>) = 0 [pid 1260] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1267] <... futex resumed>) = 1 [pid 1266] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1265] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1264] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1263] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1262] <... futex resumed>) = 0 [pid 1261] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1260] <... futex resumed>) = 0 [pid 1268] <... clone3 resumed> => {parent_tid=[1269]}, 88) = 1269 [pid 1267] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1266] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1265] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1264] mknod(0x20000000, 000 [pid 1263] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1262] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1261] <... futex resumed>) = 0 [pid 1268] rt_sigprocmask(SIG_SETMASK, [], [pid 1267] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1266] <... futex resumed>) = 0 [pid 1265] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1264] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1263] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1262] <... futex resumed>) = 0 [pid 1261] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1260] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1268] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1267] creat("./bus", 000 [pid 1266] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1265] <... mmap resumed>) = 0x20000000 [pid 1264] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1263] <... futex resumed>) = 0 [pid 1262] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1268] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1267] <... creat resumed>) = 3 [pid 1265] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1264] <... futex resumed>) = 0 [pid 1260] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1267] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1266] <... open resumed>) = 5 [pid 1265] <... futex resumed>) = 1 [pid 1264] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1263] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1262] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1261] <... futex resumed>) = 0 [pid 1268] <... futex resumed>) = 0 [pid 1267] <... futex resumed>) = 0 [pid 1266] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1265] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1263] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1262] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1261] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1260] exit_group(0 [pid 1268] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1267] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1266] <... futex resumed>) = 0 [pid 1265] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1263] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1262] <... futex resumed>) = 0 [pid 1261] <... futex resumed>) = 0 [pid 1267] <... openat resumed>) = 4 [pid 1265] memfd_create("syzkaller", 0 [pid 1264] <... futex resumed>) = ? [pid 1261] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1260] <... exit_group resumed>) = ? [pid 1267] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1265] <... memfd_create resumed>) = 6 [pid 1264] +++ exited with 0 +++ [pid 1267] <... futex resumed>) = 0 [pid 1265] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1267] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1265] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1265] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 1265] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1265] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 7 [pid 1265] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1265] ioctl(7, LOOP_CLR_FD [pid 1266] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1265] <... ioctl resumed>) = 0 [pid 1263] <... futex resumed>) = 0 [pid 1262] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1269 attached [pid 1269] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1260] +++ exited with 0 +++ [pid 1263] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1262] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1269] rt_sigprocmask(SIG_SETMASK, [], [pid 1266] <... mmap resumed>) = 0x20000000 [pid 1262] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1269] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1267] <... futex resumed>) = 0 [pid 1266] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1262] <... futex resumed>) = 1 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1260, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1269] memfd_create("syzkaller", 0 [pid 1267] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1266] <... futex resumed>) = 1 [pid 1263] <... futex resumed>) = 0 [pid 1262] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1269] <... memfd_create resumed>) = 3 [pid 1267] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1266] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1265] ioctl(7, LOOP_SET_FD, 6 [pid 1263] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1269] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1267] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1266] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1265] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] <... openat resumed>) = 3 [pid 1269] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1267] <... futex resumed>) = 1 [pid 1265] close(7 [pid 1263] <... futex resumed>) = 0 [pid 1262] <... futex resumed>) = 0 [pid 1269] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1267] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1266] memfd_create("syzkaller", 0 [pid 1265] <... close resumed>) = 0 [pid 303] ioctl(3, LOOP_CLR_FD [pid 1267] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1266] <... memfd_create resumed>) = 6 [pid 1265] close(6 [pid 1263] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1262] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1267] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1266] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1265] <... close resumed>) = 0 [pid 1262] <... futex resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 1267] <... open resumed>) = 5 [pid 1266] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1265] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1262] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] close(3 [pid 1267] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1265] <... futex resumed>) = 1 [pid 1261] <... futex resumed>) = 0 [pid 1269] <... write resumed>) = 262144 [pid 1267] <... futex resumed>) = 0 [pid 1266] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1265] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1262] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1261] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... close resumed>) = 0 [pid 1267] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1265] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1261] <... futex resumed>) = 0 [pid 1265] mknod(0x20000000, 000 [pid 1261] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1266] <... write resumed>) = 131072 [pid 1265] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1262] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1267] <... futex resumed>) = 0 [pid 1266] munmap(0x7fe6f03b1000, 138412032 [pid 1265] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1262] <... futex resumed>) = 1 [pid 1267] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1265] <... futex resumed>) = 1 [pid 1261] <... futex resumed>) = 0 [pid 1267] <... mmap resumed>) = 0x20000000 [pid 1266] <... munmap resumed>) = 0 [pid 1265] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1262] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1261] exit_group(0 [pid 1269] munmap(0x7fe6f03b1000, 138412032 [pid 1267] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1266] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1265] <... futex resumed>) = ? [pid 1262] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1261] <... exit_group resumed>) = ? [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1270 [pid 1269] <... munmap resumed>) = 0 [pid 1267] <... futex resumed>) = 0 [pid 1266] <... openat resumed>) = 7 [pid 1265] +++ exited with 0 +++ [pid 1262] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1261] +++ exited with 0 +++ [pid 1269] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1267] memfd_create("syzkaller", 0 [pid 1269] <... openat resumed>) = 4 [pid 1267] <... memfd_create resumed>) = 6 [pid 1269] ioctl(4, LOOP_SET_FD, 3 [pid 1267] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1269] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1267] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1269] ioctl(4, LOOP_CLR_FD [pid 1267] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1269] <... ioctl resumed>) = 0 [pid 1267] <... write resumed>) = 131072 [pid 1266] ioctl(7, LOOP_SET_FD, 6 [pid 1262] <... futex resumed>) = 0 [pid 1267] munmap(0x7fe6f03b1000, 138412032 [pid 1266] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1262] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1261, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 1267] <... munmap resumed>) = 0 [pid 1266] ioctl(7, LOOP_CLR_FD [pid 1267] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1266] <... ioctl resumed>) = 0 [pid 1267] <... openat resumed>) = 7 [pid 1267] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1267] ioctl(7, LOOP_CLR_FD) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1269] ioctl(4, LOOP_SET_FD, 3 [pid 306] <... openat resumed>) = 3 [pid 1269] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] ioctl(3, LOOP_CLR_FD [pid 1269] close(4 [pid 306] <... ioctl resumed>) = 0 [pid 1269] <... close resumed>) = 0 [pid 306] close(3 [pid 1269] close(3 [pid 306] <... close resumed>) = 0 [pid 1269] <... close resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1269] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1267] ioctl(7, LOOP_SET_FD, 6 [pid 1266] ioctl(7, LOOP_SET_FD, 6 [pid 1269] <... futex resumed>) = 1 [pid 1268] <... futex resumed>) = 0 [pid 1267] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1269] chdir("./file0" [pid 1268] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1267] close(7 [pid 1266] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1269] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1268] <... futex resumed>) = 0 [pid 1267] <... close resumed>) = 0 [pid 1266] close(7./strace-static-x86_64: Process 1270 attached [pid 1269] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1268] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1267] close(6 [pid 1266] <... close resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1271 [pid 1270] set_robust_list(0x5555636e06a0, 24 [pid 1269] <... futex resumed>) = 0 [pid 1268] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1267] <... close resumed>) = 0 [pid 1266] close(6 [pid 1269] creat("./bus", 000 [pid 1268] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1267] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1269] <... creat resumed>) = 3 [pid 1268] <... futex resumed>) = 0 [pid 1267] <... futex resumed>) = 1 [pid 1266] <... close resumed>) = 0 [pid 1270] <... set_robust_list resumed>) = 0 [pid 1269] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1268] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1267] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1266] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1262] <... futex resumed>) = 0 [pid 1269] <... futex resumed>) = 0 [pid 1268] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1269] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1268] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1269] <... openat resumed>) = 4 [pid 1268] <... futex resumed>) = 0 [pid 1269] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1268] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1269] <... futex resumed>) = 0 [pid 1268] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1269] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1268] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1269] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1268] <... futex resumed>) = 0 [pid 1269] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1268] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1271 attached [pid 1271] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1271] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1271] setpgid(0, 0) = 0 [pid 1271] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1271] write(3, "1000", 4) = 4 [pid 1271] close(3) = 0 executing program [pid 1271] write(1, "executing program\n", 18) = 18 [pid 1271] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1271] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1271] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1271] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1271] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1271] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1266] <... futex resumed>) = 1 [pid 1263] <... futex resumed>) = 0 [pid 1262] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1270] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1269] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1267] <... futex resumed>) = 0 [pid 1266] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1263] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1262] <... futex resumed>) = 1 [pid 1270] <... prctl resumed>) = 0 [pid 1269] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1267] mknod(0x20000000, 000 [pid 1266] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1263] <... futex resumed>) = 0 [pid 1262] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1270] setpgid(0, 0 [pid 1269] <... futex resumed>) = 1 [pid 1268] <... futex resumed>) = 0 [pid 1267] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1266] mknod(0x20000000, 000 [pid 1263] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1269] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1268] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1267] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1271] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1270] <... setpgid resumed>) = 0 [pid 1269] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1268] <... futex resumed>) = 0 [pid 1267] <... futex resumed>) = 1 [pid 1266] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1262] <... futex resumed>) = 0 [pid 1271] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1269] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1268] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1267] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1266] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1270] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1269] <... open resumed>) = 5 [pid 1262] exit_group(0 [pid 1266] <... futex resumed>) = 1 [pid 1263] <... futex resumed>) = 0 [pid 1271] <... clone3 resumed> => {parent_tid=[1272]}, 88) = 1272 [pid 1270] <... openat resumed>) = 3 [pid 1269] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1267] <... futex resumed>) = ? [pid 1266] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1262] <... exit_group resumed>) = ? [pid 1263] exit_group(0 [pid 1271] rt_sigprocmask(SIG_SETMASK, [], [pid 1270] write(3, "1000", 4 [pid 1269] <... futex resumed>) = 1 [pid 1268] <... futex resumed>) = 0 [pid 1267] +++ exited with 0 +++ [pid 1271] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1269] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1268] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1271] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1269] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1268] <... futex resumed>) = 0 [pid 1262] +++ exited with 0 +++ [pid 1263] <... exit_group resumed>) = ? [pid 1271] <... futex resumed>) = 0 [pid 1270] <... write resumed>) = 4 [pid 1269] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1268] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1266] <... futex resumed>) = ? [pid 1271] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1270] close(3 [pid 1269] <... mmap resumed>) = 0x20000000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1262, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1269] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1268] <... futex resumed>) = 0 [pid 1269] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1268] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1269] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1268] <... futex resumed>) = 0 [pid 1269] memfd_create("syzkaller", 0 [pid 1268] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1266] +++ exited with 0 +++ [pid 1270] <... close resumed>) = 0 [pid 1263] +++ exited with 0 +++ [pid 1269] <... memfd_create resumed>) = 6 executing program [pid 1270] write(1, "executing program\n", 18 [pid 1269] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1270] <... write resumed>) = 18 [pid 1269] <... mmap resumed>) = 0x7fe6f03b1000 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1263, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- [pid 1270] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1269] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 1270] <... futex resumed>) = 0 [pid 1269] <... write resumed>) = 131072 [pid 1270] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1269] munmap(0x7fe6f03b1000, 138412032 [pid 304] <... restart_syscall resumed>) = 0 [pid 1270] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1269] <... munmap resumed>) = 0 [pid 1270] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1269] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1270] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1269] <... openat resumed>) = 7 [pid 1270] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1269] ioctl(7, LOOP_SET_FD, 6 [pid 1270] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1269] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1270] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1269] ioctl(7, LOOP_CLR_FD [pid 1270] <... mprotect resumed>) = 0 [pid 1269] <... ioctl resumed>) = 0 [pid 304] <... openat resumed>) = 3 [pid 1270] rt_sigprocmask(SIG_BLOCK, ~[], [pid 304] ioctl(3, LOOP_CLR_FD [pid 1270] <... rt_sigprocmask resumed>[], 8) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 1270] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 304] close(3) = 0 [pid 1270] <... clone3 resumed> => {parent_tid=[1273]}, 88) = 1273 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1270] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 1272 attached [pid 1272] set_robust_list(0x7fe6f87d19a0, 24 [pid 1270] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1270] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1274 [pid 1270] <... futex resumed>) = 0 [pid 1272] <... set_robust_list resumed>) = 0 [pid 1270] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1272] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1269] ioctl(7, LOOP_SET_FD, 6 [pid 1272] memfd_create("syzkaller", 0 [pid 1269] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1272] <... memfd_create resumed>) = 3 [pid 1269] close(7 [pid 1272] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1269] <... close resumed>) = 0 [pid 1272] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1269] close(6 [pid 1272] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1269] <... close resumed>) = 0 [pid 1269] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1274 attached ) = 1 [pid 1268] <... futex resumed>) = 0 [pid 1269] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1268] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1274] set_robust_list(0x5555636e06a0, 24 [pid 1269] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1268] <... futex resumed>) = 0 [pid 1269] mknod(0x20000000, 000 [pid 1268] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1269] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1269] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1268] <... futex resumed>) = 0 [pid 1269] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1268] exit_group(0 [pid 1269] <... futex resumed>) = ? [pid 1268] <... exit_group resumed>) = ? [pid 1269] +++ exited with 0 +++ [pid 1268] +++ exited with 0 +++ [pid 1272] <... write resumed>) = 262144 [pid 1272] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1272] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 1274] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 1273 attached [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1268, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1274] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 1273] set_robust_list(0x7fe6f87d19a0, 24 [pid 1274] <... prctl resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1274] setpgid(0, 0 [pid 1273] <... set_robust_list resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 1274] <... setpgid resumed>) = 0 [pid 1273] rt_sigprocmask(SIG_SETMASK, [], [pid 305] ioctl(3, LOOP_CLR_FD) = 0 [pid 1274] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1273] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 305] close(3) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1272] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1272] ioctl(4, LOOP_CLR_FD [pid 1274] <... openat resumed>) = 3 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1275 [pid 1274] write(3, "1000", 4 [pid 1273] memfd_create("syzkaller", 0 [pid 1274] <... write resumed>) = 4 [pid 1272] <... ioctl resumed>) = 0 [pid 1273] <... memfd_create resumed>) = 3 [pid 1274] close(3./strace-static-x86_64: Process 1275 attached [pid 1275] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1275] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1275] setpgid(0, 0executing program ) = 0 [pid 1274] <... close resumed>) = 0 [pid 1273] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1272] ioctl(4, LOOP_SET_FD, 3 [pid 1274] write(1, "executing program\n", 18 [pid 1273] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1274] <... write resumed>) = 18 [pid 1272] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1272] close(4) = 0 [pid 1272] close(3) = 0 [pid 1272] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1271] <... futex resumed>) = 0 [pid 1271] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1271] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1272] <... futex resumed>) = 1 [pid 1272] chdir("./file0" [pid 1273] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1272] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1274] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1272] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1271] <... futex resumed>) = 0 [pid 1271] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1272] <... futex resumed>) = 1 [pid 1271] <... futex resumed>) = 0 [pid 1272] creat("./bus", 000 [pid 1271] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1272] <... creat resumed>) = 3 [pid 1272] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1271] <... futex resumed>) = 0 [pid 1272] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1271] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1272] <... openat resumed>) = 4 [pid 1271] <... futex resumed>) = 0 [pid 1272] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1271] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1272] <... futex resumed>) = 0 [pid 1271] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1272] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1271] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1274] <... futex resumed>) = 0 [pid 1272] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1271] <... futex resumed>) = 0 [pid 302] <... restart_syscall resumed>) = 0 [pid 1272] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1271] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1274] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1272] <... futex resumed>) = 0 [pid 1271] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1274] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1272] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1271] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1274] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1273] <... write resumed>) = 262144 [pid 1272] <... open resumed>) = 5 [pid 1271] <... futex resumed>) = 0 [pid 1274] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1272] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1271] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1274] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1273] munmap(0x7fe6f03b1000, 138412032 [pid 1272] <... futex resumed>) = 0 [pid 1271] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1274] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1273] <... munmap resumed>) = 0 [pid 1272] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1271] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1274] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1273] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1272] <... mmap resumed>) = 0x20000000 [pid 1271] <... futex resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 1275] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1274] <... mprotect resumed>) = 0 [pid 1272] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1271] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] ioctl(3, LOOP_CLR_FD [pid 1275] <... openat resumed>) = 3 [pid 1274] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1273] <... openat resumed>) = 4 [pid 1272] <... futex resumed>) = 0 [pid 1271] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1275] write(3, "1000", 4 [pid 1274] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1272] memfd_create("syzkaller", 0 [pid 1271] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... ioctl resumed>) = 0 [pid 1275] <... write resumed>) = 4 [pid 1274] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1273] ioctl(4, LOOP_SET_FD, 3 [pid 1272] <... memfd_create resumed>) = 6 [pid 1271] <... futex resumed>) = 0 [pid 302] close(3 [pid 1275] close(3 [pid 1273] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1272] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1271] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1275] <... close resumed>) = 0 [pid 1274] <... clone3 resumed> => {parent_tid=[1276]}, 88) = 1276 [pid 1273] ioctl(4, LOOP_CLR_FD [pid 1272] <... mmap resumed>) = 0x7fe6f03b1000 [pid 302] <... close resumed>) = 0 [pid 1274] rt_sigprocmask(SIG_SETMASK, [], [pid 1273] <... ioctl resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1274] <... rt_sigprocmask resumed>NULL, 8) = 0 executing program [pid 1275] write(1, "executing program\n", 18 [pid 1274] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1272] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1274] <... futex resumed>) = 0 [pid 1275] <... write resumed>) = 18 [pid 1274] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1272] <... write resumed>) = 131072 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1277 [pid 1273] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1273] close(4 [pid 1275] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1273] <... close resumed>) = 0 [pid 1272] munmap(0x7fe6f03b1000, 138412032 [pid 1273] close(3 [pid 1275] <... futex resumed>) = 0 [pid 1272] <... munmap resumed>) = 0 [pid 1275] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1272] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1275] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1273] <... close resumed>) = 0 [pid 1272] <... openat resumed>) = 7 [pid 1273] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1275] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1273] <... futex resumed>) = 1 [pid 1272] ioctl(7, LOOP_SET_FD, 6 [pid 1270] <... futex resumed>) = 0 [pid 1275] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1272] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1275] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1272] ioctl(7, LOOP_CLR_FD./strace-static-x86_64: Process 1277 attached [pid 1275] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1273] chdir("./file0" [pid 1272] <... ioctl resumed>) = 0 [pid 1270] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1273] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1277] set_robust_list(0x5555636e06a0, 24 [pid 1273] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1270] <... futex resumed>) = 0 [pid 1277] <... set_robust_list resumed>) = 0 [pid 1273] <... futex resumed>) = 0 [pid 1270] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1273] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1270] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1277] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1275] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1270] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1275] <... mprotect resumed>) = 0 [pid 1277] <... prctl resumed>) = 0 [pid 1275] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1273] <... futex resumed>) = 0 [pid 1270] <... futex resumed>) = 1 [pid 1275] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1277] setpgid(0, 0 [pid 1275] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1273] creat("./bus", 000 [pid 1270] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1275] <... clone3 resumed> => {parent_tid=[1278]}, 88) = 1278 [pid 1273] <... creat resumed>) = 3 [pid 1277] <... setpgid resumed>) = 0 [pid 1275] rt_sigprocmask(SIG_SETMASK, [], [pid 1273] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1275] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1275] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1273] <... futex resumed>) = 1 [pid 1272] ioctl(7, LOOP_SET_FD, 6 [pid 1270] <... futex resumed>) = 0 [pid 1277] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1275] <... futex resumed>) = 0 [pid 1273] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1272] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1270] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1275] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1273] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1272] close(7) = 0 ./strace-static-x86_64: Process 1276 attached [pid 1272] close(6 [pid 1276] set_robust_list(0x7fe6f87d19a0, 24 [pid 1272] <... close resumed>) = 0 [pid 1276] <... set_robust_list resumed>) = 0 [pid 1272] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1276] rt_sigprocmask(SIG_SETMASK, [], [pid 1272] <... futex resumed>) = 1 [pid 1271] <... futex resumed>) = 0 [pid 1276] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1272] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1271] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1276] memfd_create("syzkaller", 0 [pid 1272] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1271] <... futex resumed>) = 0 [pid 1276] <... memfd_create resumed>) = 3 [pid 1272] mknod(0x20000000, 000 [pid 1271] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1276] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1272] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1276] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1272] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1277] <... openat resumed>) = 3 [pid 1276] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1273] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1272] <... futex resumed>) = 1 [pid 1271] <... futex resumed>) = 0 [pid 1270] <... futex resumed>) = 0 [pid 1277] write(3, "1000", 4 [pid 1273] <... openat resumed>) = 4 [pid 1272] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1271] exit_group(0 [pid 1277] <... write resumed>) = 4 [pid 1273] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1272] <... futex resumed>) = ? [pid 1271] <... exit_group resumed>) = ? executing program [pid 1270] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1277] close(3 [pid 1273] <... futex resumed>) = 0 [pid 1272] +++ exited with 0 +++ [pid 1271] +++ exited with 0 +++ [pid 1270] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1277] <... close resumed>) = 0 [pid 1273] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1270] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1271, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1277] write(1, "executing program\n", 18 [pid 1273] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1270] <... futex resumed>) = 0 [pid 1277] <... write resumed>) = 18 [pid 1273] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1270] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1277] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1276] <... write resumed>) = 262144 [pid 1273] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1277] <... futex resumed>) = 0 [pid 1273] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1277] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 306] <... openat resumed>) = 3 [pid 1273] <... futex resumed>) = 1 [pid 1277] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1273] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1270] <... futex resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 1277] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1270] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... ioctl resumed>) = 0 [pid 1277] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1273] <... futex resumed>) = 0 [pid 1270] <... futex resumed>) = 1 [pid 306] close(3 [pid 1277] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1273] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1270] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1277] <... mmap resumed>) = 0x7fe6f87b1000 [pid 306] <... close resumed>) = 0 [pid 1277] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1273] <... open resumed>) = 5 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1277] <... mprotect resumed>) = 0 [pid 1273] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1278 attached [pid 1276] munmap(0x7fe6f03b1000, 138412032 [pid 1278] set_robust_list(0x7fe6f87d19a0, 24 [pid 1276] <... munmap resumed>) = 0 [pid 1273] <... futex resumed>) = 1 [pid 1270] <... futex resumed>) = 0 [pid 1273] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1270] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1279 [pid 1273] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1277] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1270] <... futex resumed>) = 0 [pid 1277] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1273] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1270] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1277] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1278] <... set_robust_list resumed>) = 0 [pid 1276] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1273] <... mmap resumed>) = 0x20000000 [pid 1273] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1277] <... clone3 resumed> => {parent_tid=[1280]}, 88) = 1280 [pid 1273] <... futex resumed>) = 1 [pid 1277] rt_sigprocmask(SIG_SETMASK, [], [pid 1270] <... futex resumed>) = 0 [pid 1277] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1273] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1270] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1277] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1273] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1270] <... futex resumed>) = 0 [pid 1277] <... futex resumed>) = 0 [pid 1278] rt_sigprocmask(SIG_SETMASK, [], [pid 1277] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1276] <... openat resumed>) = 4 [pid 1273] memfd_create("syzkaller", 0 [pid 1270] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1278] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1276] ioctl(4, LOOP_SET_FD, 3 [pid 1273] <... memfd_create resumed>) = 6 [pid 1278] memfd_create("syzkaller", 0 [pid 1276] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1273] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1278] <... memfd_create resumed>) = 3 [pid 1276] ioctl(4, LOOP_CLR_FD [pid 1273] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1278] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1276] <... ioctl resumed>) = 0 [pid 1278] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1273] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1278] <... write resumed>) = 262144 [pid 1273] <... write resumed>) = 131072 [pid 1278] munmap(0x7fe6f03b1000, 138412032 [pid 1273] munmap(0x7fe6f03b1000, 138412032 [pid 1278] <... munmap resumed>) = 0 [pid 1273] <... munmap resumed>) = 0 [pid 1278] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1273] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1278] <... openat resumed>) = 4 [pid 1273] <... openat resumed>) = 7 [pid 1278] ioctl(4, LOOP_SET_FD, 3 [pid 1273] ioctl(7, LOOP_SET_FD, 6 [pid 1278] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1273] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1278] ioctl(4, LOOP_CLR_FD [pid 1273] ioctl(7, LOOP_CLR_FD [pid 1278] <... ioctl resumed>) = 0 [pid 1276] ioctl(4, LOOP_SET_FD, 3 [pid 1273] <... ioctl resumed>) = 0 [pid 1276] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1276] close(4) = 0 [pid 1276] close(3) = 0 [pid 1276] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1280 attached ) = 1 [pid 1274] <... futex resumed>) = 0 [pid 1278] ioctl(4, LOOP_SET_FD, 3 [pid 1276] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1274] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1273] ioctl(7, LOOP_SET_FD, 6./strace-static-x86_64: Process 1279 attached [pid 1278] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1276] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1274] <... futex resumed>) = 0 [pid 1280] set_robust_list(0x7fe6f87d19a0, 24 [pid 1279] set_robust_list(0x5555636e06a0, 24 [pid 1278] close(4 [pid 1276] chdir("./file0" [pid 1274] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1273] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1279] <... set_robust_list resumed>) = 0 [pid 1278] <... close resumed>) = 0 [pid 1276] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1273] close(7 [pid 1280] <... set_robust_list resumed>) = 0 [pid 1279] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1278] close(3 [pid 1276] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1280] rt_sigprocmask(SIG_SETMASK, [], [pid 1279] <... prctl resumed>) = 0 [pid 1278] <... close resumed>) = 0 [pid 1276] <... futex resumed>) = 1 [pid 1274] <... futex resumed>) = 0 [pid 1273] <... close resumed>) = 0 [pid 1280] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1279] setpgid(0, 0 [pid 1278] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1276] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1274] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1273] close(6 [pid 1280] memfd_create("syzkaller", 0 [pid 1279] <... setpgid resumed>) = 0 [pid 1278] <... futex resumed>) = 1 [pid 1276] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1275] <... futex resumed>) = 0 [pid 1274] <... futex resumed>) = 0 [pid 1280] <... memfd_create resumed>) = 3 [pid 1279] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1278] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1276] creat("./bus", 000 [pid 1275] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1274] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1273] <... close resumed>) = 0 [pid 1280] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1279] <... openat resumed>) = 3 [pid 1278] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1276] <... creat resumed>) = 3 [pid 1275] <... futex resumed>) = 0 [pid 1273] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1280] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1279] write(3, "1000", 4 [pid 1278] chdir("./file0" [pid 1276] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1275] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1279] <... write resumed>) = 4 [pid 1278] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1276] <... futex resumed>) = 1 [pid 1274] <... futex resumed>) = 0 [pid 1273] <... futex resumed>) = 1 [pid 1270] <... futex resumed>) = 0 [pid 1279] close(3 [pid 1278] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1276] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1274] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1273] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1270] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1279] <... close resumed>) = 0 [pid 1278] <... futex resumed>) = 1 [pid 1276] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1275] <... futex resumed>) = 0 executing program [pid 1274] <... futex resumed>) = 0 [pid 1273] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1270] <... futex resumed>) = 0 [pid 1279] write(1, "executing program\n", 18 [pid 1278] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1276] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1275] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1274] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1273] mknod(0x20000000, 000 [pid 1270] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1280] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1279] <... write resumed>) = 18 [pid 1278] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1276] <... openat resumed>) = 4 [pid 1275] <... futex resumed>) = 0 [pid 1273] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1279] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1278] creat("./bus", 000 [pid 1276] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1275] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1279] <... futex resumed>) = 0 [pid 1278] <... creat resumed>) = 3 [pid 1276] <... futex resumed>) = 1 [pid 1274] <... futex resumed>) = 0 [pid 1273] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1280] <... write resumed>) = 262144 [pid 1279] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1278] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1276] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1280] munmap(0x7fe6f03b1000, 138412032 [pid 1279] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1278] <... futex resumed>) = 1 [pid 1276] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1275] <... futex resumed>) = 0 [pid 1274] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1273] <... futex resumed>) = 1 [pid 1270] <... futex resumed>) = 0 [pid 1279] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1278] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1276] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1275] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1279] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1278] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1275] <... futex resumed>) = 0 [pid 1279] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1278] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1275] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1279] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1278] <... openat resumed>) = 4 [pid 1279] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1278] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1279] <... mprotect resumed>) = 0 [pid 1278] <... futex resumed>) = 1 [pid 1275] <... futex resumed>) = 0 [pid 1279] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1278] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1275] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1274] <... futex resumed>) = 0 [pid 1273] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1270] exit_group(0 [pid 1279] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1278] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1275] <... futex resumed>) = 0 [pid 1279] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1278] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1275] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1274] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1273] <... futex resumed>) = ? [pid 1270] <... exit_group resumed>) = ? [pid 1273] +++ exited with 0 +++ [pid 1279] <... clone3 resumed> => {parent_tid=[1281]}, 88) = 1281 [pid 1279] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1279] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1279] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1281 attached [pid 1270] +++ exited with 0 +++ [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1270, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1280] <... munmap resumed>) = 0 [pid 1276] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1278] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1276] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1278] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1276] <... futex resumed>) = 1 [pid 1274] <... futex resumed>) = 0 [pid 1278] <... futex resumed>) = 1 [pid 1276] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1275] <... futex resumed>) = 0 [pid 1280] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1278] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1275] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1274] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1280] <... openat resumed>) = 4 [pid 1278] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1275] <... futex resumed>) = 0 [pid 1274] <... futex resumed>) = 1 [pid 1280] ioctl(4, LOOP_SET_FD, 3 [pid 1278] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1276] <... futex resumed>) = 0 [pid 1275] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1274] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1280] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1278] <... open resumed>) = 5 [pid 1276] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1280] ioctl(4, LOOP_CLR_FD [pid 1278] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1280] <... ioctl resumed>) = 0 [pid 1278] <... futex resumed>) = 1 [pid 1276] <... open resumed>) = 5 [pid 1275] <... futex resumed>) = 0 [pid 1278] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1276] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1275] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1278] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1276] <... futex resumed>) = 1 [pid 1275] <... futex resumed>) = 0 [pid 1274] <... futex resumed>) = 0 [pid 1278] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1276] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1275] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1274] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1278] <... mmap resumed>) = 0x20000000 [pid 1276] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1274] <... futex resumed>) = 0 [pid 1278] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1276] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1275] <... futex resumed>) = 0 [pid 1274] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1280] ioctl(4, LOOP_SET_FD, 3 [pid 1278] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1275] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1280] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1278] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1276] <... mmap resumed>) = 0x20000000 [pid 1275] <... futex resumed>) = 0 [pid 1280] close(4 [pid 1278] memfd_create("syzkaller", 0 [pid 1276] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1275] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1280] <... close resumed>) = 0 [pid 1278] <... memfd_create resumed>) = 6 [pid 1276] <... futex resumed>) = 1 [pid 1274] <... futex resumed>) = 0 [pid 1280] close(3 [pid 1278] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1276] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1274] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1278] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1280] <... close resumed>) = 0 [pid 1278] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1276] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1274] <... futex resumed>) = 0 [pid 1280] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1278] <... write resumed>) = 131072 [pid 1280] <... futex resumed>) = 1 [pid 1278] munmap(0x7fe6f03b1000, 138412032 [pid 1277] <... futex resumed>) = 0 [pid 1276] memfd_create("syzkaller", 0 [pid 1274] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1281] set_robust_list(0x7fe6f87d19a0, 24 [pid 1280] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1278] <... munmap resumed>) = 0 [pid 1277] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1276] <... memfd_create resumed>) = 6 [pid 1281] <... set_robust_list resumed>) = 0 [pid 1280] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1278] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1277] <... futex resumed>) = 0 [pid 1276] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1281] rt_sigprocmask(SIG_SETMASK, [], [pid 1280] chdir("./file0" [pid 1278] <... openat resumed>) = 7 [pid 1277] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1281] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1280] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1278] ioctl(7, LOOP_SET_FD, 6 [pid 1276] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1281] memfd_create("syzkaller", 0 [pid 1280] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1278] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1281] <... memfd_create resumed>) = 3 [pid 1278] ioctl(7, LOOP_CLR_FD [pid 1281] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1278] <... ioctl resumed>) = 0 [pid 1281] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1280] <... futex resumed>) = 1 [pid 1277] <... futex resumed>) = 0 [pid 1276] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 303] <... restart_syscall resumed>) = 0 [pid 1280] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1278] ioctl(7, LOOP_SET_FD, 6 [pid 1277] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1278] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1278] close(7) = 0 [pid 1278] close(6 [pid 1276] <... write resumed>) = 131072 [pid 1280] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1278] <... close resumed>) = 0 [pid 1277] <... futex resumed>) = 0 [pid 1276] munmap(0x7fe6f03b1000, 138412032 [pid 1281] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1280] creat("./bus", 000 [pid 1278] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1277] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1280] <... creat resumed>) = 3 [pid 1278] <... futex resumed>) = 1 [pid 1276] <... munmap resumed>) = 0 [pid 1275] <... futex resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1280] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1278] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1276] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1275] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1281] <... write resumed>) = 262144 [pid 1280] <... futex resumed>) = 1 [pid 1278] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1277] <... futex resumed>) = 0 [pid 1276] <... openat resumed>) = 7 [pid 1275] <... futex resumed>) = 0 [pid 303] <... openat resumed>) = 3 [pid 1280] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1278] mknod(0x20000000, 000 [pid 1277] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1276] ioctl(7, LOOP_SET_FD, 6 [pid 1275] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1280] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1278] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1277] <... futex resumed>) = 0 [pid 1276] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] ioctl(3, LOOP_CLR_FD [pid 1280] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1278] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1277] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1276] ioctl(7, LOOP_CLR_FD [pid 303] <... ioctl resumed>) = 0 [pid 1281] munmap(0x7fe6f03b1000, 138412032 [pid 1280] <... openat resumed>) = 4 [pid 1278] <... futex resumed>) = 1 [pid 1276] <... ioctl resumed>) = 0 [pid 1275] <... futex resumed>) = 0 [pid 1281] <... munmap resumed>) = 0 [pid 1280] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1278] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1275] exit_group(0 [pid 303] close(3 [pid 1281] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1280] <... futex resumed>) = 1 [pid 1278] <... futex resumed>) = ? [pid 1277] <... futex resumed>) = 0 [pid 1275] <... exit_group resumed>) = ? [pid 1281] <... openat resumed>) = 4 [pid 1280] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1278] +++ exited with 0 +++ [pid 1277] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1275] +++ exited with 0 +++ [pid 303] <... close resumed>) = 0 [pid 1280] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1277] <... futex resumed>) = 0 [pid 1276] ioctl(7, LOOP_SET_FD, 6 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1280] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1277] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1276] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1275, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1281] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1276] close(7 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1280] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1276] <... close resumed>) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1282 [pid 1280] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1276] close(6 [pid 1280] <... futex resumed>) = 1 [pid 1277] <... futex resumed>) = 0 [pid 1281] ioctl(4, LOOP_CLR_FD) = 0 [pid 1280] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1277] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1276] <... close resumed>) = 0 [pid 1280] <... open resumed>) = 5 [pid 1277] <... futex resumed>) = 0 [pid 1276] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1280] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1277] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1280] <... futex resumed>) = 0 [pid 1276] <... futex resumed>) = 1 [pid 1274] <... futex resumed>) = 0 [pid 1277] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1280] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1277] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1276] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1274] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1280] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1277] <... futex resumed>) = 0 [pid 1276] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1274] <... futex resumed>) = 0 [pid 1280] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1277] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1276] mknod(0x20000000, 000 [pid 1274] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1280] <... mmap resumed>) = 0x20000000 [pid 1276] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1280] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1276] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1280] <... futex resumed>) = 1 [pid 1280] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1277] <... futex resumed>) = 0 [pid 1276] <... futex resumed>) = 1 [pid 1274] <... futex resumed>) = 0 [pid 1277] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1276] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1280] <... futex resumed>) = 0 [pid 1277] <... futex resumed>) = 1 [pid 1274] exit_group(0 [pid 1281] ioctl(4, LOOP_SET_FD, 3 [pid 1280] memfd_create("syzkaller", 0 [pid 1277] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1276] <... futex resumed>) = ? [pid 1274] <... exit_group resumed>) = ? [pid 1281] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1281] close(4 [pid 1280] <... memfd_create resumed>) = 6 [pid 1276] +++ exited with 0 +++ [pid 1281] <... close resumed>) = 0 [pid 1281] close(3) = 0 [pid 1280] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1274] +++ exited with 0 +++ [pid 1280] <... mmap resumed>) = 0x7fe6f03b1000 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1274, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 1282 attached [pid 1281] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1282] set_robust_list(0x5555636e06a0, 24 [pid 1281] <... futex resumed>) = 1 [pid 1279] <... futex resumed>) = 0 [pid 1282] <... set_robust_list resumed>) = 0 [pid 1281] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1279] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1282] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1281] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1279] <... futex resumed>) = 0 [pid 1282] <... prctl resumed>) = 0 [pid 1281] chdir("./file0" [pid 1280] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1279] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 1282] setpgid(0, 0 [pid 1281] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 305] <... restart_syscall resumed>) = 0 [pid 1282] <... setpgid resumed>) = 0 [pid 1281] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1282] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1281] <... futex resumed>) = 1 [pid 1280] <... write resumed>) = 131072 [pid 1279] <... futex resumed>) = 0 [pid 1282] <... openat resumed>) = 3 [pid 1281] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1280] munmap(0x7fe6f03b1000, 138412032 [pid 1279] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1282] write(3, "1000", 4 [pid 1281] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1279] <... futex resumed>) = 0 [pid 1282] <... write resumed>) = 4 [pid 1281] creat("./bus", 000 [pid 1279] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1282] close(3 [pid 1281] <... creat resumed>) = 3 [pid 1282] <... close resumed>) = 0 [pid 1281] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 1282] write(1, "executing program\n", 18 [pid 1281] <... futex resumed>) = 1 [pid 1279] <... futex resumed>) = 0 [pid 1282] <... write resumed>) = 18 [pid 1281] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1279] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1282] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1281] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1279] <... futex resumed>) = 0 [pid 1282] <... futex resumed>) = 0 [pid 1281] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1279] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1282] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1281] <... openat resumed>) = 4 [pid 1282] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1281] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... restart_syscall resumed>) = 0 [pid 1282] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1281] <... futex resumed>) = 1 [pid 1280] <... munmap resumed>) = 0 [pid 1279] <... futex resumed>) = 0 [pid 1282] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1281] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1279] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1282] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1281] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1280] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1279] <... futex resumed>) = 0 [pid 1282] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1281] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1279] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... openat resumed>) = 3 [pid 1282] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1280] <... openat resumed>) = 7 [pid 305] ioctl(3, LOOP_CLR_FD [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1282] <... mprotect resumed>) = 0 [pid 1280] ioctl(7, LOOP_SET_FD, 6 [pid 305] <... ioctl resumed>) = 0 [pid 304] <... openat resumed>) = 3 [pid 1280] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] close(3 [pid 304] ioctl(3, LOOP_CLR_FD [pid 1280] ioctl(7, LOOP_CLR_FD [pid 305] <... close resumed>) = 0 [pid 1280] <... ioctl resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 304] <... ioctl resumed>) = 0 [pid 1282] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 304] close(3 [pid 1282] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1283 [pid 1281] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 304] <... close resumed>) = 0 [pid 1282] <... clone3 resumed> => {parent_tid=[1284]}, 88) = 1284 [pid 1281] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1282] rt_sigprocmask(SIG_SETMASK, [], [pid 1281] <... futex resumed>) = 1 [pid 1279] <... futex resumed>) = 0 [pid 1282] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1281] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1279] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1282] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1281] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1280] ioctl(7, LOOP_SET_FD, 6 [pid 1279] <... futex resumed>) = 0 [pid 1282] <... futex resumed>) = 0 [pid 1281] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1280] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1279] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1285 [pid 1282] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1281] <... open resumed>) = 5 [pid 1280] close(7 [pid 1281] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1280] <... close resumed>) = 0 [pid 1279] <... futex resumed>) = 0 [pid 1281] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1280] close(6 [pid 1279] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1281] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1279] <... futex resumed>) = 0 [pid 1281] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1279] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1281] <... mmap resumed>) = 0x20000000 [pid 1280] <... close resumed>) = 0 [pid 1281] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1280] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1279] <... futex resumed>) = 0 [pid 1281] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1280] <... futex resumed>) = 1 [pid 1279] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1277] <... futex resumed>) = 0 [pid 1281] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1280] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1279] <... futex resumed>) = 0 [pid 1277] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1284 attached [pid 1281] memfd_create("syzkaller", 0 [pid 1280] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1279] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1277] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1285 attached ./strace-static-x86_64: Process 1283 attached [pid 1284] set_robust_list(0x7fe6f87d19a0, 24 [pid 1281] <... memfd_create resumed>) = 6 [pid 1280] mknod(0x20000000, 000 [pid 1285] set_robust_list(0x5555636e06a0, 24 [pid 1284] <... set_robust_list resumed>) = 0 [pid 1283] set_robust_list(0x5555636e06a0, 24 [pid 1281] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1277] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1283] <... set_robust_list resumed>) = 0 [pid 1281] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1280] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1285] <... set_robust_list resumed>) = 0 [pid 1284] rt_sigprocmask(SIG_SETMASK, [], [pid 1283] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1281] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1280] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1285] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1284] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1283] <... prctl resumed>) = 0 [pid 1281] <... write resumed>) = 131072 [pid 1280] <... futex resumed>) = 1 [pid 1285] <... prctl resumed>) = 0 [pid 1284] memfd_create("syzkaller", 0 [pid 1283] setpgid(0, 0 [pid 1281] munmap(0x7fe6f03b1000, 138412032 [pid 1280] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1277] <... futex resumed>) = 0 [pid 1285] setpgid(0, 0 [pid 1284] <... memfd_create resumed>) = 3 [pid 1283] <... setpgid resumed>) = 0 [pid 1281] <... munmap resumed>) = 0 [pid 1285] <... setpgid resumed>) = 0 [pid 1284] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1283] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1281] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1277] exit_group(0 [pid 1285] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1284] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1283] <... openat resumed>) = 3 [pid 1281] <... openat resumed>) = 7 [pid 1285] <... openat resumed>) = 3 [pid 1283] write(3, "1000", 4 [pid 1281] ioctl(7, LOOP_SET_FD, 6 [pid 1280] <... futex resumed>) = ? [pid 1277] <... exit_group resumed>) = ? [pid 1283] <... write resumed>) = 4 [pid 1281] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1283] close(3 [pid 1281] ioctl(7, LOOP_CLR_FD [pid 1280] +++ exited with 0 +++ [pid 1283] <... close resumed>) = 0 [pid 1281] <... ioctl resumed>) = 0 executing program [pid 1283] write(1, "executing program\n", 18) = 18 [pid 1277] +++ exited with 0 +++ [pid 1283] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1277, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1283] <... futex resumed>) = 0 [pid 1285] write(3, "1000", 4 [pid 1283] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1285] <... write resumed>) = 4 [pid 1283] <... rt_sigaction resumed>NULL, 8) = 0 [pid 302] <... openat resumed>) = 3 [pid 1283] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 302] ioctl(3, LOOP_CLR_FD [pid 1285] close(3 [pid 1283] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 1285] <... close resumed>) = 0 [pid 1283] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1281] ioctl(7, LOOP_SET_FD, 6 [pid 302] close(3 [pid 1285] write(1, "executing program\n", 18 [pid 1283] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1281] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) executing program [pid 1283] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1281] close(7 [pid 302] <... close resumed>) = 0 [pid 1285] <... write resumed>) = 18 [pid 1283] <... mprotect resumed>) = 0 [pid 1281] <... close resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1285] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1284] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1283] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1281] close(6 [pid 1285] <... futex resumed>) = 0 [pid 1283] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1281] <... close resumed>) = 0 [pid 1283] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1281] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1286 [pid 1285] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1284] <... write resumed>) = 262144 [pid 1281] <... futex resumed>) = 1 [pid 1279] <... futex resumed>) = 0 [pid 1285] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1283] <... clone3 resumed> => {parent_tid=[1287]}, 88) = 1287 [pid 1281] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1279] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1285] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1284] munmap(0x7fe6f03b1000, 138412032 [pid 1283] rt_sigprocmask(SIG_SETMASK, [], [pid 1281] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1279] <... futex resumed>) = 0 [pid 1285] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1284] <... munmap resumed>) = 0 [pid 1283] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1281] mknod(0x20000000, 000 [pid 1279] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1285] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1284] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1283] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1281] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1285] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1283] <... futex resumed>) = 0 [pid 1281] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1285] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1284] <... openat resumed>) = 4 [pid 1283] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1281] <... futex resumed>) = 1 [pid 1279] <... futex resumed>) = 0 [pid 1285] <... mprotect resumed>) = 0 [pid 1284] ioctl(4, LOOP_SET_FD, 3 [pid 1281] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1279] exit_group(0 [pid 1285] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1284] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1281] <... futex resumed>) = ? [pid 1279] <... exit_group resumed>) = ? [pid 1285] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1284] ioctl(4, LOOP_CLR_FD [pid 1281] +++ exited with 0 +++ [pid 1279] +++ exited with 0 +++ ./strace-static-x86_64: Process 1286 attached [pid 1285] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1284] <... ioctl resumed>) = 0 [pid 1286] set_robust_list(0x5555636e06a0, 24 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1279, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1286] <... set_robust_list resumed>) = 0 [pid 1285] <... clone3 resumed> => {parent_tid=[1288]}, 88) = 1288 [pid 1285] rt_sigprocmask(SIG_SETMASK, [], [pid 1286] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 1285] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1286] <... prctl resumed>) = 0 [pid 1285] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1286] setpgid(0, 0 [pid 1285] <... futex resumed>) = 0 [pid 1286] <... setpgid resumed>) = 0 [pid 1285] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1287 attached [pid 1286] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1287] set_robust_list(0x7fe6f87d19a0, 24 [pid 1286] <... openat resumed>) = 3 [pid 1284] ioctl(4, LOOP_SET_FD, 3 [pid 1286] write(3, "1000", 4 [pid 1284] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1286] <... write resumed>) = 4 [pid 1284] close(4 [pid 1286] close(3 [pid 1284] <... close resumed>) = 0 [pid 1286] <... close resumed>) = 0 [pid 1284] close(3 [pid 1287] <... set_robust_list resumed>) = 0 [pid 1287] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1287] memfd_create("syzkaller", 0 [pid 1286] write(1, "executing program\n", 18 [pid 1284] <... close resumed>) = 0 executing program [pid 1286] <... write resumed>) = 18 [pid 1284] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... restart_syscall resumed>) = 0 [pid 1282] <... futex resumed>) = 0 [pid 1282] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1282] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1284] <... futex resumed>) = 1 [pid 1286] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1284] chdir("./file0" [pid 1286] <... futex resumed>) = 0 [pid 1284] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1286] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1284] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... openat resumed>) = 3 [pid 1286] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1284] <... futex resumed>) = 1 [pid 1282] <... futex resumed>) = 0 [pid 1286] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1284] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1282] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] ioctl(3, LOOP_CLR_FD [pid 1287] <... memfd_create resumed>) = 3 [pid 1286] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1284] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1282] <... futex resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 1287] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1286] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1284] creat("./bus", 000 [pid 1282] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] close(3./strace-static-x86_64: Process 1288 attached [pid 1287] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1286] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1284] <... creat resumed>) = 3 [pid 1286] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1284] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... close resumed>) = 0 [pid 1288] set_robust_list(0x7fe6f87d19a0, 24 [pid 1287] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1286] <... mprotect resumed>) = 0 [pid 1284] <... futex resumed>) = 1 [pid 1282] <... futex resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1288] <... set_robust_list resumed>) = 0 [pid 1286] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1284] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1282] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1288] rt_sigprocmask(SIG_SETMASK, [], [pid 1282] <... futex resumed>) = 0 [pid 1288] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1282] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1288] memfd_create("syzkaller", 0 [pid 1286] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1284] <... openat resumed>) = 4 [pid 1288] <... memfd_create resumed>) = 3 [pid 1286] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1284] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1289 [pid 1288] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1284] <... futex resumed>) = 1 [pid 1282] <... futex resumed>) = 0 [pid 1288] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1286] <... clone3 resumed> => {parent_tid=[1290]}, 88) = 1290 [pid 1284] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1282] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1288] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1286] rt_sigprocmask(SIG_SETMASK, [], [pid 1284] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1282] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1289 attached [pid 1287] <... write resumed>) = 262144 [pid 1286] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1284] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1282] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1289] set_robust_list(0x5555636e06a0, 24 [pid 1286] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1284] <... futex resumed>) = 0 [pid 1282] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1289] <... set_robust_list resumed>) = 0 [pid 1288] <... write resumed>) = 262144 [pid 1286] <... futex resumed>) = 0 [pid 1284] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1282] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1282] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1287] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1287] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 1287] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1287] ioctl(4, LOOP_CLR_FD) = 0 [pid 1288] munmap(0x7fe6f03b1000, 138412032) = 0 ./strace-static-x86_64: Process 1290 attached [pid 1290] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1290] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1288] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 1290] memfd_create("syzkaller", 0 [pid 1288] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1287] ioctl(4, LOOP_SET_FD, 3 [pid 1290] <... memfd_create resumed>) = 3 [pid 1288] ioctl(4, LOOP_CLR_FD [pid 1287] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1290] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1288] <... ioctl resumed>) = 0 [pid 1287] close(4 [pid 1290] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1287] <... close resumed>) = 0 [pid 1290] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1289] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1287] close(3 [pid 1286] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1284] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1289] <... prctl resumed>) = 0 [pid 1284] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1289] setpgid(0, 0) = 0 [pid 1288] ioctl(4, LOOP_SET_FD, 3 [pid 1287] <... close resumed>) = 0 [pid 1284] <... open resumed>) = 5 [pid 1284] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1288] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1287] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1284] <... futex resumed>) = 1 [pid 1282] <... futex resumed>) = 0 [pid 1289] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1288] close(4 [pid 1287] <... futex resumed>) = 1 [pid 1284] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1283] <... futex resumed>) = 0 [pid 1282] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1289] <... openat resumed>) = 3 [pid 1288] <... close resumed>) = 0 [pid 1287] chdir("./file0" [pid 1284] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1283] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1282] <... futex resumed>) = 0 [pid 1289] write(3, "1000", 4 [pid 1288] close(3 [pid 1287] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1284] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1283] <... futex resumed>) = 0 [pid 1282] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1289] <... write resumed>) = 4 [pid 1288] <... close resumed>) = 0 [pid 1287] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1284] <... mmap resumed>) = 0x20000000 [pid 1283] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1290] <... write resumed>) = 262144 [pid 1289] close(3 [pid 1288] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1287] <... futex resumed>) = 0 [pid 1284] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1283] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1289] <... close resumed>) = 0 [pid 1288] <... futex resumed>) = 1 [pid 1287] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1285] <... futex resumed>) = 0 [pid 1284] <... futex resumed>) = 1 [pid 1283] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1282] <... futex resumed>) = 0 executing program [pid 1289] write(1, "executing program\n", 18 [pid 1288] chdir("./file0" [pid 1287] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1285] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1284] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1283] <... futex resumed>) = 0 [pid 1282] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1289] <... write resumed>) = 18 [pid 1288] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1287] creat("./bus", 000 [pid 1285] <... futex resumed>) = 0 [pid 1284] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1283] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1282] <... futex resumed>) = 0 [pid 1290] munmap(0x7fe6f03b1000, 138412032 [pid 1289] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1288] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1287] <... creat resumed>) = 3 [pid 1285] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1284] memfd_create("syzkaller", 0 [pid 1282] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1290] <... munmap resumed>) = 0 [pid 1289] <... futex resumed>) = 0 [pid 1288] <... futex resumed>) = 0 [pid 1287] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1285] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1284] <... memfd_create resumed>) = 6 [pid 1290] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1289] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1288] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1287] <... futex resumed>) = 1 [pid 1285] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1284] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1283] <... futex resumed>) = 0 [pid 1290] <... openat resumed>) = 4 [pid 1289] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1288] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1287] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1285] <... futex resumed>) = 0 [pid 1284] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1283] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1290] ioctl(4, LOOP_SET_FD, 3 [pid 1289] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1288] creat("./bus", 000 [pid 1287] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1285] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1283] <... futex resumed>) = 0 [pid 1290] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1288] <... creat resumed>) = 3 [pid 1287] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1283] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1290] ioctl(4, LOOP_CLR_FD [pid 1288] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1287] <... openat resumed>) = 4 [pid 1290] <... ioctl resumed>) = 0 [pid 1289] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1288] <... futex resumed>) = 0 [pid 1287] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1285] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1284] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1289] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1288] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1287] <... futex resumed>) = 1 [pid 1285] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1283] <... futex resumed>) = 0 [pid 1288] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1287] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1283] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1288] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1287] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1283] <... futex resumed>) = 0 [pid 1289] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1288] <... openat resumed>) = 4 [pid 1287] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1285] <... futex resumed>) = 0 [pid 1284] <... write resumed>) = 131072 [pid 1283] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1289] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1288] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1287] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1285] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1284] munmap(0x7fe6f03b1000, 138412032 [pid 1290] ioctl(4, LOOP_SET_FD, 3 [pid 1289] <... mprotect resumed>) = 0 [pid 1288] <... futex resumed>) = 0 [pid 1287] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1285] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1290] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1289] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1288] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1287] <... futex resumed>) = 1 [pid 1285] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1284] <... munmap resumed>) = 0 [pid 1283] <... futex resumed>) = 0 [pid 1290] close(4 [pid 1289] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1288] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1287] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1285] <... futex resumed>) = 0 [pid 1284] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1283] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1290] <... close resumed>) = 0 [pid 1289] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1288] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1287] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1285] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1284] <... openat resumed>) = 7 [pid 1283] <... futex resumed>) = 0 [pid 1290] close(3 [pid 1288] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1287] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1284] ioctl(7, LOOP_SET_FD, 6 [pid 1283] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1290] <... close resumed>) = 0 [pid 1289] <... clone3 resumed> => {parent_tid=[1291]}, 88) = 1291 [pid 1288] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1287] <... open resumed>) = 5 [pid 1284] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1290] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1289] rt_sigprocmask(SIG_SETMASK, [], [pid 1288] <... futex resumed>) = 1 [pid 1287] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1285] <... futex resumed>) = 0 [pid 1284] ioctl(7, LOOP_CLR_FD [pid 1290] <... futex resumed>) = 1 [pid 1289] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1288] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1287] <... futex resumed>) = 1 [pid 1286] <... futex resumed>) = 0 [pid 1285] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1284] <... ioctl resumed>) = 0 [pid 1283] <... futex resumed>) = 0 [pid 1290] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1289] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1288] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1287] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1286] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1285] <... futex resumed>) = 0 [pid 1283] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1290] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1289] <... futex resumed>) = 0 [pid 1288] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1287] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1286] <... futex resumed>) = 0 [pid 1285] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1283] <... futex resumed>) = 0 [pid 1290] chdir("./file0" [pid 1288] <... open resumed>) = 5 [pid 1287] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1283] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1290] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1288] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1287] <... mmap resumed>) = 0x20000000 [pid 1290] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1288] <... futex resumed>) = 1 [pid 1287] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1285] <... futex resumed>) = 0 [pid 1290] <... futex resumed>) = 0 [pid 1288] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1287] <... futex resumed>) = 1 [pid 1285] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1283] <... futex resumed>) = 0 [pid 1290] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1288] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1287] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1285] <... futex resumed>) = 0 [pid 1283] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1288] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1287] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1285] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1283] <... futex resumed>) = 0 [pid 1288] <... mmap resumed>) = 0x20000000 [pid 1287] memfd_create("syzkaller", 0 [pid 1283] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1288] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1287] <... memfd_create resumed>) = 6 [pid 1288] <... futex resumed>) = 1 [pid 1287] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1285] <... futex resumed>) = 0 [pid 1288] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1287] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1285] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1289] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1288] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1287] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1286] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1285] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1291 attached [pid 1288] memfd_create("syzkaller", 0 [pid 1287] <... write resumed>) = 131072 [pid 1286] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1285] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1291] set_robust_list(0x7fe6f87d19a0, 24 [pid 1288] <... memfd_create resumed>) = 6 [pid 1287] munmap(0x7fe6f03b1000, 138412032 [pid 1286] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1284] ioctl(7, LOOP_SET_FD, 6 [pid 1291] <... set_robust_list resumed>) = 0 [pid 1290] <... futex resumed>) = 0 [pid 1288] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1287] <... munmap resumed>) = 0 [pid 1286] <... futex resumed>) = 1 [pid 1284] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1291] rt_sigprocmask(SIG_SETMASK, [], [pid 1290] creat("./bus", 000 [pid 1288] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1287] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1291] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1290] <... creat resumed>) = 3 [pid 1288] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1287] <... openat resumed>) = 7 [pid 1286] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1284] close(7 [pid 1290] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1288] <... write resumed>) = 131072 [pid 1287] ioctl(7, LOOP_SET_FD, 6 [pid 1286] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1290] <... futex resumed>) = 0 [pid 1288] munmap(0x7fe6f03b1000, 138412032 [pid 1287] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1286] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1284] <... close resumed>) = 0 [pid 1290] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1288] <... munmap resumed>) = 0 [pid 1287] ioctl(7, LOOP_CLR_FD [pid 1286] <... futex resumed>) = 0 [pid 1284] close(6 [pid 1290] <... openat resumed>) = 4 [pid 1288] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1287] <... ioctl resumed>) = 0 [pid 1290] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1288] <... openat resumed>) = 7 [pid 1286] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1290] <... futex resumed>) = 0 [pid 1288] ioctl(7, LOOP_SET_FD, 6 [pid 1284] <... close resumed>) = 0 [pid 1290] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1288] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1286] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1284] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1288] ioctl(7, LOOP_CLR_FD [pid 1286] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1284] <... futex resumed>) = 1 [pid 1282] <... futex resumed>) = 0 [pid 1290] <... futex resumed>) = 0 [pid 1288] <... ioctl resumed>) = 0 [pid 1286] <... futex resumed>) = 1 [pid 1284] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1282] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1291] memfd_create("syzkaller", 0 [pid 1290] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1286] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1284] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1282] <... futex resumed>) = 0 [pid 1291] <... memfd_create resumed>) = 3 [pid 1287] ioctl(7, LOOP_SET_FD, 6 [pid 1284] mknod(0x20000000, 000 [pid 1282] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1291] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1287] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1284] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1290] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1287] close(7 [pid 1284] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1291] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1290] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1287] <... close resumed>) = 0 [pid 1290] <... futex resumed>) = 1 [pid 1287] close(6 [pid 1286] <... futex resumed>) = 0 [pid 1284] <... futex resumed>) = 1 [pid 1282] <... futex resumed>) = 0 [pid 1290] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1288] ioctl(7, LOOP_SET_FD, 6 [pid 1287] <... close resumed>) = 0 [pid 1286] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1284] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1282] exit_group(0 [pid 1290] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1288] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1287] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1286] <... futex resumed>) = 0 [pid 1284] <... futex resumed>) = ? [pid 1282] <... exit_group resumed>) = ? [pid 1291] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1290] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1288] close(7 [pid 1287] <... futex resumed>) = 1 [pid 1286] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1284] +++ exited with 0 +++ [pid 1283] <... futex resumed>) = 0 [pid 1282] +++ exited with 0 +++ [pid 1290] <... open resumed>) = 5 [pid 1288] <... close resumed>) = 0 [pid 1287] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1283] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1290] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1288] close(6 [pid 1287] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1283] <... futex resumed>) = 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1282, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1290] <... futex resumed>) = 1 [pid 1288] <... close resumed>) = 0 [pid 1287] mknod(0x20000000, 000 [pid 1286] <... futex resumed>) = 0 [pid 1283] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1290] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1288] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1287] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1286] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1290] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1288] <... futex resumed>) = 1 [pid 1287] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1286] <... futex resumed>) = 0 [pid 1285] <... futex resumed>) = 0 [pid 1290] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1288] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1287] <... futex resumed>) = 1 [pid 1286] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1285] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1283] <... futex resumed>) = 0 [pid 1290] <... mmap resumed>) = 0x20000000 [pid 1288] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1287] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1285] <... futex resumed>) = 0 [pid 1283] exit_group(0 [pid 1290] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1288] mknod(0x20000000, 000 [pid 1287] <... futex resumed>) = ? [pid 1285] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1283] <... exit_group resumed>) = ? [pid 1291] <... write resumed>) = 262144 [pid 1290] <... futex resumed>) = 1 [pid 1288] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1287] +++ exited with 0 +++ [pid 1286] <... futex resumed>) = 0 [pid 1283] +++ exited with 0 +++ [pid 1290] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1288] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1286] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1291] munmap(0x7fe6f03b1000, 138412032 [pid 1290] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1288] <... futex resumed>) = 1 [pid 1286] <... futex resumed>) = 0 [pid 1285] <... futex resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1283, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1291] <... munmap resumed>) = 0 [pid 1290] memfd_create("syzkaller", 0 [pid 1288] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1286] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1285] exit_group(0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1291] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1290] <... memfd_create resumed>) = 6 [pid 1288] <... futex resumed>) = ? [pid 1285] <... exit_group resumed>) = ? [pid 1291] <... openat resumed>) = 4 [pid 1290] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1288] +++ exited with 0 +++ [pid 1285] +++ exited with 0 +++ [pid 305] <... restart_syscall resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 1291] ioctl(4, LOOP_SET_FD, 3 [pid 1290] <... mmap resumed>) = 0x7fe6f03b1000 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1285, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 1290] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 1290] munmap(0x7fe6f03b1000, 138412032 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 1291] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1290] <... munmap resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1291] ioctl(4, LOOP_CLR_FD [pid 1290] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1291] <... ioctl resumed>) = 0 [pid 1290] <... openat resumed>) = 7 [pid 305] <... openat resumed>) = 3 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1290] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 305] ioctl(3, LOOP_CLR_FD [pid 303] <... openat resumed>) = 3 [pid 1290] ioctl(7, LOOP_CLR_FD) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 303] ioctl(3, LOOP_CLR_FD [pid 305] close(3 [pid 303] <... ioctl resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 303] close(3 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] <... close resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1290] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1290] close(7) = 0 [pid 1290] close(6) = 0 [pid 1290] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1286] <... futex resumed>) = 0 [pid 1290] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1291] ioctl(4, LOOP_SET_FD, 3 [pid 1286] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1291] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1290] <... futex resumed>) = 0 [pid 1286] <... futex resumed>) = 1 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1292 [pid 1291] close(4 [pid 1290] mknod(0x20000000, 000 [pid 1286] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1291] <... close resumed>) = 0 [pid 1290] <... mknod resumed>) = -1 EEXIST (File exists) [pid 304] <... restart_syscall resumed>) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1293 [pid 1291] close(3 [pid 1290] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1290] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 1293 attached ./strace-static-x86_64: Process 1292 attached [pid 1291] <... close resumed>) = 0 [pid 1286] <... futex resumed>) = 0 [pid 1293] set_robust_list(0x5555636e06a0, 24 [pid 1292] set_robust_list(0x5555636e06a0, 24 [pid 1291] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1286] exit_group(0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1293] <... set_robust_list resumed>) = 0 [pid 1292] <... set_robust_list resumed>) = 0 [pid 1291] <... futex resumed>) = 1 [pid 1290] <... futex resumed>) = ? [pid 1289] <... futex resumed>) = 0 [pid 1286] <... exit_group resumed>) = ? [pid 304] <... openat resumed>) = 3 [pid 1293] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1292] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1291] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1289] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] ioctl(3, LOOP_CLR_FD [pid 1293] <... prctl resumed>) = 0 [pid 1292] <... prctl resumed>) = 0 [pid 1291] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1289] <... futex resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 1293] setpgid(0, 0 [pid 1292] setpgid(0, 0 [pid 1291] chdir("./file0" [pid 1289] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] close(3 [pid 1293] <... setpgid resumed>) = 0 [pid 1292] <... setpgid resumed>) = 0 [pid 1291] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 304] <... close resumed>) = 0 [pid 1293] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1292] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1291] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1293] <... openat resumed>) = 3 [pid 1292] <... openat resumed>) = 3 [pid 1291] <... futex resumed>) = 1 [pid 1289] <... futex resumed>) = 0 [pid 1293] write(3, "1000", 4 [pid 1292] write(3, "1000", 4 [pid 1291] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1289] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1294 [pid 1293] <... write resumed>) = 4 [pid 1292] <... write resumed>) = 4 [pid 1291] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1289] <... futex resumed>) = 0 [pid 1293] close(3 [pid 1292] close(3 [pid 1291] creat("./bus", 000 [pid 1290] +++ exited with 0 +++ executing program executing program [pid 1289] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1286] +++ exited with 0 +++ [pid 1293] <... close resumed>) = 0 [pid 1292] <... close resumed>) = 0 [pid 1291] <... creat resumed>) = 3 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1286, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1293] write(1, "executing program\n", 18 [pid 1292] write(1, "executing program\n", 18 [pid 1291] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 1293] <... write resumed>) = 18 [pid 1292] <... write resumed>) = 18 [pid 1291] <... futex resumed>) = 1 [pid 1289] <... futex resumed>) = 0 [pid 1293] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1292] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1291] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1289] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1293] <... futex resumed>) = 0 [pid 1292] <... futex resumed>) = 0 [pid 1291] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1289] <... futex resumed>) = 0 [pid 1293] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1292] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1291] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1289] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1293] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1292] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1291] <... openat resumed>) = 4 [pid 1293] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1292] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1291] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1293] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1292] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1291] <... futex resumed>) = 1 [pid 1289] <... futex resumed>) = 0 [pid 1293] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1292] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1291] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1289] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1293] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1292] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1291] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1289] <... futex resumed>) = 0 [pid 1293] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1292] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1291] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1289] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1293] <... mprotect resumed>) = 0 [pid 1292] <... mprotect resumed>) = 0 [pid 1291] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1293] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1292] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1291] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1293] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1292] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1291] <... futex resumed>) = 1 [pid 1289] <... futex resumed>) = 0 [pid 1293] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1292] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1291] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1289] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1291] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1289] <... futex resumed>) = 0 [pid 1293] <... clone3 resumed> => {parent_tid=[1295]}, 88) = 1295 [pid 1292] <... clone3 resumed> => {parent_tid=[1296]}, 88) = 1296 [pid 1291] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1289] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1293] rt_sigprocmask(SIG_SETMASK, [], [pid 1292] rt_sigprocmask(SIG_SETMASK, [], [pid 1291] <... open resumed>) = 5 [pid 1293] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1292] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1291] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1293] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1292] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1291] <... futex resumed>) = 1 [pid 1289] <... futex resumed>) = 0 [pid 1293] <... futex resumed>) = 0 [pid 1292] <... futex resumed>) = 0 [pid 1291] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1289] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1293] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1292] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1291] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1289] <... futex resumed>) = 0 [pid 1291] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1289] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1296 attached ./strace-static-x86_64: Process 1295 attached ./strace-static-x86_64: Process 1294 attached [pid 1291] <... mmap resumed>) = 0x20000000 [pid 302] <... restart_syscall resumed>) = 0 [pid 1291] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1289] <... futex resumed>) = 0 [pid 1291] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1289] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1291] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1289] <... futex resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 1291] memfd_create("syzkaller", 0 [pid 1289] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 302] ioctl(3, LOOP_CLR_FD [pid 1296] set_robust_list(0x7fe6f87d19a0, 24 [pid 1295] set_robust_list(0x7fe6f87d19a0, 24 [pid 1294] set_robust_list(0x5555636e06a0, 24 [pid 1291] <... memfd_create resumed>) = 6 [pid 302] <... ioctl resumed>) = 0 [pid 1291] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 302] close(3 [pid 1291] <... mmap resumed>) = 0x7fe6f03b1000 [pid 302] <... close resumed>) = 0 [pid 1296] <... set_robust_list resumed>) = 0 [pid 1295] <... set_robust_list resumed>) = 0 [pid 1294] <... set_robust_list resumed>) = 0 [pid 1291] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1296] rt_sigprocmask(SIG_SETMASK, [], [pid 1295] rt_sigprocmask(SIG_SETMASK, [], [pid 1294] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1291] <... write resumed>) = 131072 [pid 1291] munmap(0x7fe6f03b1000, 138412032 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1297 [pid 1296] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1295] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1294] <... prctl resumed>) = 0 [pid 1291] <... munmap resumed>) = 0 [pid 1291] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 7 [pid 1291] ioctl(7, LOOP_SET_FD, 6 [pid 1294] setpgid(0, 0 [pid 1291] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1296] memfd_create("syzkaller", 0 [pid 1291] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1297 attached [pid 1295] memfd_create("syzkaller", 0 [pid 1294] <... setpgid resumed>) = 0 [pid 1296] <... memfd_create resumed>) = 3 [pid 1297] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1297] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1294] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1297] <... prctl resumed>) = 0 [pid 1297] setpgid(0, 0) = 0 [pid 1297] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1295] <... memfd_create resumed>) = 3 [pid 1294] <... openat resumed>) = 3 [pid 1296] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1291] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1291] close(7) = 0 [pid 1291] close(6 [pid 1296] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1295] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1294] write(3, "1000", 4 [pid 1291] <... close resumed>) = 0 [pid 1294] <... write resumed>) = 4 [pid 1291] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1289] <... futex resumed>) = 0 [pid 1291] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1289] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1291] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1289] <... futex resumed>) = 0 [pid 1291] mknod(0x20000000, 000 [pid 1289] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1291] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1291] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1289] <... futex resumed>) = 0 executing program [pid 1295] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1294] close(3 [pid 1291] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1289] exit_group(0 [pid 1291] <... futex resumed>) = ? [pid 1289] <... exit_group resumed>) = ? [pid 1291] +++ exited with 0 +++ [pid 1289] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1289, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1297] <... openat resumed>) = 3 [pid 1297] write(3, "1000", 4) = 4 [pid 1296] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1294] <... close resumed>) = 0 [pid 1297] close(3) = 0 [pid 1297] write(1, "executing program\n", 18) = 18 [pid 1297] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1297] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1297] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1297] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1297] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1297] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1295] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1294] write(1, "executing program\n", 18executing program [pid 1297] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1297] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1294] <... write resumed>) = 18 [pid 1297] <... clone3 resumed> => {parent_tid=[1298]}, 88) = 1298 [pid 1297] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1297] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1297] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 1298 attached [pid 1298] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1298] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1298] memfd_create("syzkaller", 0 [pid 1295] <... write resumed>) = 262144 [pid 1294] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1298] <... memfd_create resumed>) = 3 [pid 1298] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1294] <... futex resumed>) = 0 [pid 1296] <... write resumed>) = 262144 [pid 1294] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1294] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1294] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1294] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1296] munmap(0x7fe6f03b1000, 138412032 [pid 1295] munmap(0x7fe6f03b1000, 138412032 [pid 1294] <... mprotect resumed>) = 0 [pid 1294] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1294] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[1299]}, 88) = 1299 [pid 1294] rt_sigprocmask(SIG_SETMASK, [], [pid 1298] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1294] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1294] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1294] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1295] <... munmap resumed>) = 0 [pid 1296] <... munmap resumed>) = 0 [pid 1295] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1296] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1298] <... write resumed>) = 262144 [pid 1298] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1298] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 1298] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1298] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1299 attached [pid 1299] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1299] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1299] memfd_create("syzkaller", 0) = 3 [pid 1299] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1298] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1298] close(4) = 0 [pid 1298] close(3) = 0 [pid 1298] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1297] <... futex resumed>) = 0 [pid 1297] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1297] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1298] <... futex resumed>) = 1 [pid 1298] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 1298] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1297] <... futex resumed>) = 0 [pid 1297] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1297] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1298] <... futex resumed>) = 1 [pid 1298] creat("./bus", 000) = 3 [pid 1298] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1297] <... futex resumed>) = 0 [pid 1297] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1297] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1296] <... openat resumed>) = 4 [pid 1295] <... openat resumed>) = 4 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 1300 [pid 1298] <... futex resumed>) = 1 [pid 1298] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 1298] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1297] <... futex resumed>) = 0 [pid 1297] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1297] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1298] <... futex resumed>) = 1 [pid 1298] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1299] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1296] ioctl(4, LOOP_SET_FD, 3 [pid 1295] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1296] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1295] ioctl(4, LOOP_CLR_FD [pid 1296] ioctl(4, LOOP_CLR_FD [pid 1298] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1298] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1297] <... futex resumed>) = 0 [pid 1297] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1297] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1298] <... futex resumed>) = 1 [pid 1298] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 1296] <... ioctl resumed>) = 0 [pid 1295] <... ioctl resumed>) = 0 [pid 1298] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1297] <... futex resumed>) = 0 [pid 1297] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1297] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1298] <... futex resumed>) = 1 [pid 1298] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 1298] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1297] <... futex resumed>) = 0 [pid 1297] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1297] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1298] <... futex resumed>) = 1 [pid 1298] memfd_create("syzkaller", 0) = 6 [pid 1298] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1296] ioctl(4, LOOP_SET_FD, 3 [pid 1295] ioctl(4, LOOP_SET_FD, 3 [pid 1296] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1295] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1296] close(4 [pid 1295] close(4) = 0 [pid 1296] <... close resumed>) = 0 [pid 1296] close(3 [pid 1295] close(3 [pid 1296] <... close resumed>) = 0 [pid 1298] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1295] <... close resumed>) = 0 [pid 1296] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1295] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1296] <... futex resumed>) = 1 [pid 1295] <... futex resumed>) = 1 [pid 1293] <... futex resumed>) = 0 [pid 1292] <... futex resumed>) = 0 [pid 1293] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1292] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1293] <... futex resumed>) = 0 [pid 1292] <... futex resumed>) = 0 [pid 1293] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1292] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1296] chdir("./file0" [pid 1295] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 1296] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1295] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1296] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1295] <... futex resumed>) = 1 [pid 1293] <... futex resumed>) = 0 [pid 1296] <... futex resumed>) = 1 [pid 1295] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1293] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1292] <... futex resumed>) = 0 [pid 1296] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1295] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1293] <... futex resumed>) = 0 [pid 1292] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1296] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1295] creat("./bus", 000 [pid 1293] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1292] <... futex resumed>) = 0 [pid 1296] creat("./bus", 000 [pid 1292] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1295] <... creat resumed>) = 3 [pid 1296] <... creat resumed>) = 3 [pid 1295] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1296] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1295] <... futex resumed>) = 1 [pid 1293] <... futex resumed>) = 0 [pid 1296] <... futex resumed>) = 1 [pid 1295] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1293] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1292] <... futex resumed>) = 0 [pid 1296] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1295] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1293] <... futex resumed>) = 0 [pid 1292] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1296] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1295] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1293] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1292] <... futex resumed>) = 0 [pid 1296] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1295] <... openat resumed>) = 4 [pid 1292] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1296] <... openat resumed>) = 4 [pid 1295] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1296] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1295] <... futex resumed>) = 1 [pid 1293] <... futex resumed>) = 0 [pid 1296] <... futex resumed>) = 1 [pid 1295] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1293] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1292] <... futex resumed>) = 0 [pid 1296] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1295] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1293] <... futex resumed>) = 0 [pid 1292] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1296] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1295] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1293] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1292] <... futex resumed>) = 0 [pid 1296] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1292] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1298] <... write resumed>) = 131072 [pid 1298] munmap(0x7fe6f03b1000, 138412032 [pid 1295] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1296] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1295] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1296] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1295] <... futex resumed>) = 1 [pid 1293] <... futex resumed>) = 0 [pid 1296] <... futex resumed>) = 1 [pid 1295] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1293] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1292] <... futex resumed>) = 0 [pid 1296] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1295] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1293] <... futex resumed>) = 0 [pid 1292] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1296] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1295] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1293] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1292] <... futex resumed>) = 0 [pid 1296] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1295] <... open resumed>) = 5 [pid 1292] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1296] <... open resumed>) = 5 [pid 1295] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1296] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1295] <... futex resumed>) = 1 [pid 1293] <... futex resumed>) = 0 [pid 1296] <... futex resumed>) = 1 [pid 1295] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1293] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1292] <... futex resumed>) = 0 [pid 1296] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1295] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1293] <... futex resumed>) = 0 [pid 1292] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1296] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1295] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1293] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1292] <... futex resumed>) = 0 [pid 1296] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1292] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1295] <... mmap resumed>) = 0x20000000 [pid 1298] <... munmap resumed>) = 0 [pid 1296] <... mmap resumed>) = 0x20000000 [pid 1295] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1296] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1295] <... futex resumed>) = 1 [pid 1293] <... futex resumed>) = 0 [pid 1296] <... futex resumed>) = 1 [pid 1295] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1293] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1292] <... futex resumed>) = 0 [pid 1298] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1296] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1295] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1293] <... futex resumed>) = 0 [pid 1292] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1299] <... write resumed>) = 262144 [pid 1298] <... openat resumed>) = 7 [pid 1296] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1295] memfd_create("syzkaller", 0 [pid 1293] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1292] <... futex resumed>) = 0 [pid 1299] munmap(0x7fe6f03b1000, 138412032 [pid 1298] ioctl(7, LOOP_SET_FD, 6 [pid 1296] memfd_create("syzkaller", 0 [pid 1295] <... memfd_create resumed>) = 6 [pid 1292] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1299] <... munmap resumed>) = 0 [pid 1298] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1296] <... memfd_create resumed>) = 6 [pid 1295] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1296] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1295] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1296] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1299] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1298] ioctl(7, LOOP_CLR_FD [pid 1299] <... openat resumed>) = 4 [pid 1298] <... ioctl resumed>) = 0 [pid 1299] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1299] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1300 attached [pid 1300] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1300] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1300] setpgid(0, 0) = 0 [pid 1300] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1295] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1300] write(3, "1000", 4) = 4 [pid 1300] close(3) = 0 [pid 1300] write(1, "executing program\n", 18 [pid 1298] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1298] close(7 [pid 1299] ioctl(4, LOOP_SET_FD, 3 [pid 1298] <... close resumed>) = 0 [pid 1299] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1298] close(6 [pid 1299] close(4 [pid 1298] <... close resumed>) = 0 [pid 1299] <... close resumed>) = 0 [pid 1298] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1299] close(3 [pid 1298] <... futex resumed>) = 1 [pid 1297] <... futex resumed>) = 0 [pid 1299] <... close resumed>) = 0 [pid 1298] mknod(0x20000000, 000 [pid 1297] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1296] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1299] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1298] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1297] <... futex resumed>) = 0 [pid 1295] <... write resumed>) = 131072 [pid 1299] <... futex resumed>) = 1 [pid 1298] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1297] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1299] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1298] <... futex resumed>) = 0 [pid 1297] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1298] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1297] exit_group(0 [pid 1298] <... futex resumed>) = ? [pid 1297] <... exit_group resumed>) = ? [pid 1296] <... write resumed>) = 131072 [pid 1294] <... futex resumed>) = 0 [pid 1295] munmap(0x7fe6f03b1000, 138412032 [pid 1298] +++ exited with 0 +++ [pid 1297] +++ exited with 0 +++ [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1297, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1296] munmap(0x7fe6f03b1000, 138412032 [pid 1295] <... munmap resumed>) = 0 [pid 1294] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000executing program [pid 1300] <... write resumed>) = 18 [pid 1299] <... futex resumed>) = 0 [pid 1294] <... futex resumed>) = 1 [pid 1296] <... munmap resumed>) = 0 [pid 1295] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1300] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1299] chdir("./file0" [pid 1296] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1295] <... openat resumed>) = 7 [pid 1294] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1300] <... futex resumed>) = 0 [pid 1299] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 302] <... openat resumed>) = 3 [pid 1300] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1299] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] ioctl(3, LOOP_CLR_FD [pid 1300] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1299] <... futex resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 1300] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1299] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 302] close(3 [pid 1300] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 302] <... close resumed>) = 0 [pid 1300] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1300] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1296] <... openat resumed>) = 7 [pid 1295] ioctl(7, LOOP_SET_FD, 6 [pid 1294] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1300] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1301 [pid 1300] <... mprotect resumed>) = 0 [pid 1300] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1296] ioctl(7, LOOP_SET_FD, 6 [pid 1295] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1294] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1300] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1300] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1296] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1300] <... clone3 resumed> => {parent_tid=[1302]}, 88) = 1302 [pid 1299] <... futex resumed>) = 0 [pid 1296] ioctl(7, LOOP_CLR_FD [pid 1295] ioctl(7, LOOP_CLR_FD [pid 1294] <... futex resumed>) = 1 [pid 1300] rt_sigprocmask(SIG_SETMASK, [], [pid 1299] creat("./bus", 000 [pid 1296] <... ioctl resumed>) = 0 [pid 1295] <... ioctl resumed>) = 0 [pid 1294] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1300] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1299] <... creat resumed>) = 3 [pid 1300] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1299] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1300] <... futex resumed>) = 0 [pid 1299] <... futex resumed>) = 1 [pid 1294] <... futex resumed>) = 0 [pid 1300] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1299] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1294] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1299] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1299] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1294] <... futex resumed>) = 0 [pid 1299] <... openat resumed>) = 4 [pid 1294] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1299] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1294] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1299] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1294] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1302 attached [pid 1299] <... futex resumed>) = 0 [pid 1294] <... futex resumed>) = 1 [pid 1294] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1296] ioctl(7, LOOP_SET_FD, 6 [pid 1295] ioctl(7, LOOP_SET_FD, 6 [pid 1296] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1296] close(7 [pid 1295] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1299] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1296] <... close resumed>) = 0 [pid 1295] close(7 [pid 1296] close(6 [pid 1295] <... close resumed>) = 0 [pid 1302] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1302] rt_sigprocmask(SIG_SETMASK, [], [pid 1296] <... close resumed>) = 0 [pid 1295] close(6 [pid 1296] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1299] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1299] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1299] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1302] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1295] <... close resumed>) = 0 [pid 1294] <... futex resumed>) = 0 [pid 1296] <... futex resumed>) = 1 [pid 1295] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1294] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1292] <... futex resumed>) = 0 [pid 1296] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1295] <... futex resumed>) = 1 [pid 1294] <... futex resumed>) = 1 [pid 1296] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1292] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1294] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1296] mknod(0x20000000, 000 [pid 1295] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1292] <... futex resumed>) = 0 [pid 1296] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1292] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1296] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1292] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1296] <... futex resumed>) = 0 [pid 1299] <... futex resumed>) = 0 [pid 1296] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1293] <... futex resumed>) = 0 [pid 1292] exit_group(0 [pid 1299] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1293] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1299] <... open resumed>) = 5 [pid 1296] <... futex resumed>) = ? [pid 1295] <... futex resumed>) = 0 [pid 1293] <... futex resumed>) = 1 [pid 1292] <... exit_group resumed>) = ? [pid 1299] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1296] +++ exited with 0 +++ [pid 1295] mknod(0x20000000, 000 [pid 1293] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1299] <... futex resumed>) = 1 [pid 1299] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1302] memfd_create("syzkaller", 0) = 3 [pid 1302] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1292] +++ exited with 0 +++ [pid 1294] <... futex resumed>) = 0 [pid 1294] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1292, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1299] <... futex resumed>) = 0 [pid 1295] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1294] <... futex resumed>) = 1 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1299] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1295] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1294] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1299] <... mmap resumed>) = 0x20000000 [pid 1295] <... futex resumed>) = 1 [pid 1293] <... futex resumed>) = 0 [pid 1299] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1295] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1299] <... futex resumed>) = 1 [pid 1294] <... futex resumed>) = 0 [pid 1293] exit_group(0 [pid 1299] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 1295] <... futex resumed>) = ? [pid 1294] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1293] <... exit_group resumed>) = ? [pid 1299] memfd_create("syzkaller", 0 [pid 1295] +++ exited with 0 +++ [pid 1294] <... futex resumed>) = 0 [pid 1299] <... memfd_create resumed>) = 6 [pid 1299] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 ./strace-static-x86_64: Process 1301 attached [pid 1299] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1294] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1293] +++ exited with 0 +++ [pid 305] <... restart_syscall resumed>) = 0 [pid 1301] set_robust_list(0x5555636e06a0, 24 [pid 1299] <... write resumed>) = 131072 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1293, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1301] <... set_robust_list resumed>) = 0 [pid 1299] munmap(0x7fe6f03b1000, 138412032 [pid 1301] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1299] <... munmap resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1299] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 305] <... openat resumed>) = 3 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1301] <... prctl resumed>) = 0 [pid 1299] <... openat resumed>) = 7 [pid 305] ioctl(3, LOOP_CLR_FD [pid 303] <... openat resumed>) = 3 [pid 1299] ioctl(7, LOOP_SET_FD, 6 [pid 305] <... ioctl resumed>) = 0 [pid 303] ioctl(3, LOOP_CLR_FD [pid 1299] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] close(3 [pid 303] <... ioctl resumed>) = 0 [pid 1299] ioctl(7, LOOP_CLR_FD [pid 305] <... close resumed>) = 0 [pid 303] close(3 [pid 1299] <... ioctl resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] <... close resumed>) = 0 [pid 1301] setpgid(0, 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1301] <... setpgid resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1303 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1304 [pid 1301] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1299] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1299] close(7) = 0 [pid 1299] close(6 [pid 1301] <... openat resumed>) = 3 [pid 1299] <... close resumed>) = 0 [pid 1299] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1299] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1301] write(3, "1000", 4 [pid 1294] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1303 attached [pid 1302] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1301] <... write resumed>) = 4 [pid 1294] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1301] close(3 [pid 1299] <... futex resumed>) = 0 [pid 1294] <... futex resumed>) = 1 [pid 1303] set_robust_list(0x5555636e06a0, 24 [pid 1301] <... close resumed>) = 0 [pid 1294] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1301] write(1, "executing program\n", 18 [pid 1303] <... set_robust_list resumed>) = 0 [pid 1299] mknod(0x20000000, 000executing program [pid 1301] <... write resumed>) = 18 [pid 1301] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1299] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1301] <... futex resumed>) = 0 [pid 1301] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1299] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1303] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1301] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1303] <... prctl resumed>) = 0 [pid 1299] <... futex resumed>) = 1 [pid 1294] <... futex resumed>) = 0 [pid 1294] exit_group(0 [pid 1301] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1299] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1301] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1299] <... futex resumed>) = ? [pid 1294] <... exit_group resumed>) = ? [pid 1303] setpgid(0, 0 [pid 1301] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1302] <... write resumed>) = 262144 [pid 1302] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1302] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 1302] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1302] ioctl(4, LOOP_CLR_FD [pid 1299] +++ exited with 0 +++ [pid 1301] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1294] +++ exited with 0 +++ [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1294, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 1302] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 1304 attached [pid 1303] <... setpgid resumed>) = 0 [pid 1301] <... mprotect resumed>) = 0 [pid 1304] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1301] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1304] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1304] setpgid(0, 0 [pid 1301] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1304] <... setpgid resumed>) = 0 [pid 1301] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1303] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1302] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1302] close(4) = 0 [pid 1302] close(3 [pid 1303] write(3, "1000", 4 [pid 1302] <... close resumed>) = 0 [pid 1301] <... clone3 resumed> => {parent_tid=[1305]}, 88) = 1305 [pid 1302] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1300] <... futex resumed>) = 0 [pid 1300] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1300] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1302] <... futex resumed>) = 1 [pid 1302] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 1302] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1300] <... futex resumed>) = 0 [pid 1303] <... write resumed>) = 4 [pid 1301] rt_sigprocmask(SIG_SETMASK, [], [pid 1300] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1301] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1300] <... futex resumed>) = 0 [pid 1301] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1300] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1301] <... futex resumed>) = 0 [pid 1302] <... futex resumed>) = 1 [pid 1301] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1302] creat("./bus", 000 [pid 1303] close(3 [pid 1302] <... creat resumed>) = 3 [pid 1302] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1300] <... futex resumed>) = 0 [pid 1300] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1303] <... close resumed>) = 0 [pid 1300] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1302] <... futex resumed>) = 1 [pid 1302] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000executing program [pid 1303] write(1, "executing program\n", 18 [pid 1304] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1303] <... write resumed>) = 18 [pid 1303] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1302] <... openat resumed>) = 4 [pid 1304] <... openat resumed>) = 3 [pid 1303] <... futex resumed>) = 0 [pid 1302] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1300] <... futex resumed>) = 0 [pid 1300] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1300] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1303] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1302] <... futex resumed>) = 1 [pid 1302] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1303] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1304] write(3, "1000", 4) = 4 [pid 1304] close(3) = 0 [pid 1302] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1303] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], executing program [pid 1304] write(1, "executing program\n", 18) = 18 [pid 1302] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1304] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1300] <... futex resumed>) = 0 [pid 1300] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1300] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1302] <... futex resumed>) = 1 [pid 1302] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1304] <... futex resumed>) = 0 [pid 1303] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1302] <... open resumed>) = 5 [pid 1304] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1304] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1304] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1302] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1303] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1304] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1302] <... futex resumed>) = 1 [pid 1300] <... futex resumed>) = 0 [pid 1304] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1302] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1300] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1304] <... mprotect resumed>) = 0 [pid 1303] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1302] <... mmap resumed>) = 0x20000000 [pid 1300] <... futex resumed>) = 0 [pid 1304] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1303] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1302] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1300] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1304] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1303] <... mprotect resumed>) = 0 [pid 1302] <... futex resumed>) = 0 [pid 1300] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1304] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1303] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1302] memfd_create("syzkaller", 0 [pid 1300] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1303] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1302] <... memfd_create resumed>) = 6 [pid 1300] <... futex resumed>) = 0 [pid 1304] <... clone3 resumed> => {parent_tid=[1306]}, 88) = 1306 [pid 1303] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1302] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1300] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1304] rt_sigprocmask(SIG_SETMASK, [], [pid 1302] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1303] <... clone3 resumed> => {parent_tid=[1307]}, 88) = 1307 [pid 1304] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1303] rt_sigprocmask(SIG_SETMASK, [], [pid 1302] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 304] <... restart_syscall resumed>) = 0 [pid 1304] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1304] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1302] <... write resumed>) = 131072 [pid 304] <... openat resumed>) = 3 [pid 304] ioctl(3, LOOP_CLR_FD) = 0 [pid 304] close(3) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 1308 [pid 1302] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1302] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 7 [pid 1302] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1302] ioctl(7, LOOP_CLR_FD) = 0 [pid 1303] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 1308 attached [pid 1308] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1308] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1303] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1308] <... prctl resumed>) = 0 [pid 1303] <... futex resumed>) = 0 [pid 1308] setpgid(0, 0 [pid 1303] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1308] <... setpgid resumed>) = 0 [pid 1308] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 1307 attached ./strace-static-x86_64: Process 1305 attached ) = 3 [pid 1308] write(3, "1000", 4) = 4 [pid 1308] close(3 [pid 1302] ioctl(7, LOOP_SET_FD, 6 [pid 1305] set_robust_list(0x7fe6f87d19a0, 24 [pid 1302] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1302] close(7) = 0 [pid 1302] close(6 [pid 1307] set_robust_list(0x7fe6f87d19a0, 24 [pid 1305] <... set_robust_list resumed>) = 0 [pid 1302] <... close resumed>) = 0 [pid 1302] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1300] <... futex resumed>) = 0 [pid 1302] mknod(0x20000000, 000 [pid 1300] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1302] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1300] <... futex resumed>) = 0 [pid 1302] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1300] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1302] <... futex resumed>) = 0 [pid 1300] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1302] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1300] exit_group(0 [pid 1302] <... futex resumed>) = ? [pid 1300] <... exit_group resumed>) = ? [pid 1307] <... set_robust_list resumed>) = 0 [pid 1305] rt_sigprocmask(SIG_SETMASK, [], [pid 1302] +++ exited with 0 +++ [pid 1300] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1300, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 1308] <... close resumed>) = 0 executing program [pid 1305] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1308] write(1, "executing program\n", 18) = 18 [pid 1308] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1308] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, ./strace-static-x86_64: Process 1306 attached NULL, 8) = 0 [pid 1306] set_robust_list(0x7fe6f87d19a0, 24 [pid 1308] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1306] <... set_robust_list resumed>) = 0 [pid 1308] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1306] rt_sigprocmask(SIG_SETMASK, [], [pid 1308] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1307] rt_sigprocmask(SIG_SETMASK, [], [pid 1305] memfd_create("syzkaller", 0 [pid 1306] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1306] memfd_create("syzkaller", 0 [pid 1305] <... memfd_create resumed>) = 3 [pid 1307] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1308] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1308] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1307] memfd_create("syzkaller", 0 [pid 1305] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1306] <... memfd_create resumed>) = 3 [pid 1306] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1308] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1306] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1308] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1307] <... memfd_create resumed>) = 3 [pid 1306] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1305] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1308] <... clone3 resumed> => {parent_tid=[1309]}, 88) = 1309 [pid 1308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1308] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1308] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 306] <... restart_syscall resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3) = 0 [pid 1307] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1305] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1307] <... mmap resumed>) = 0x7fe6f03b1000 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1310 [pid 1306] <... write resumed>) = 262144 [pid 1305] <... write resumed>) = 262144 [pid 1306] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1306] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 1306] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1306] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1309 attached [pid 1309] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1309] memfd_create("syzkaller", 0) = 3 [pid 1309] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1306] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1306] close(4 [pid 1307] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1306] <... close resumed>) = 0 [pid 1305] munmap(0x7fe6f03b1000, 138412032 [pid 1306] close(3) = 0 [pid 1305] <... munmap resumed>) = 0 [pid 1306] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1304] <... futex resumed>) = 0 [pid 1304] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1304] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1307] <... write resumed>) = 262144 [pid 1305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1306] <... futex resumed>) = 1 [pid 1306] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 1306] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1305] <... openat resumed>) = 4 [pid 1304] <... futex resumed>) = 0 [pid 1304] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1304] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1306] <... futex resumed>) = 1 [pid 1306] creat("./bus", 000 [pid 1305] ioctl(4, LOOP_SET_FD, 3 [pid 1306] <... creat resumed>) = 3 [pid 1307] munmap(0x7fe6f03b1000, 138412032 [pid 1305] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1306] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1305] ioctl(4, LOOP_CLR_FD [pid 1304] <... futex resumed>) = 0 [pid 1307] <... munmap resumed>) = 0 [pid 1305] <... ioctl resumed>) = 0 [pid 1304] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1304] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1306] <... futex resumed>) = 1 [pid 1306] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1307] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 1306] <... openat resumed>) = 4 [pid 1307] ioctl(4, LOOP_SET_FD, 3 [pid 1306] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1304] <... futex resumed>) = 0 [pid 1304] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1304] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1307] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1307] ioctl(4, LOOP_CLR_FD [pid 1306] <... futex resumed>) = 1 [pid 1306] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1307] <... ioctl resumed>) = 0 [pid 1306] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1306] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1304] <... futex resumed>) = 0 [pid 1304] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1304] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1306] <... futex resumed>) = 1 [pid 1306] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 1306] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1305] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1304] <... futex resumed>) = 0 [pid 1305] close(4 [pid 1304] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1305] <... close resumed>) = 0 [pid 1304] <... futex resumed>) = 0 [pid 1305] close(3 [pid 1304] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1306] <... futex resumed>) = 1 [pid 1306] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0) = 0x20000000 [pid 1306] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1304] <... futex resumed>) = 0 [pid 1305] <... close resumed>) = 0 [pid 1304] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1304] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1306] <... futex resumed>) = 1 [pid 1306] memfd_create("syzkaller", 0 [pid 1305] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1307] ioctl(4, LOOP_SET_FD, 3 [pid 1305] <... futex resumed>) = 1 [pid 1301] <... futex resumed>) = 0 [pid 1307] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1306] <... memfd_create resumed>) = 6 [pid 1305] chdir("./file0" [pid 1301] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1306] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1301] <... futex resumed>) = 0 [pid 1305] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1307] close(4 [pid 1305] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1301] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1307] <... close resumed>) = 0 [pid 1305] <... futex resumed>) = 0 [pid 1301] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1305] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1307] close(3 [pid 1305] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1301] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1306] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1305] creat("./bus", 000 [pid 1301] <... futex resumed>) = 0 [pid 1307] <... close resumed>) = 0 [pid 1305] <... creat resumed>) = 3 [pid 1301] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1307] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1305] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1301] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1307] <... futex resumed>) = 1 [pid 1306] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1305] <... futex resumed>) = 0 [pid 1303] <... futex resumed>) = 0 [pid 1301] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1307] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1305] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1303] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1301] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1310 attached [pid 1309] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1307] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1306] <... write resumed>) = 131072 [pid 1305] <... openat resumed>) = 4 [pid 1303] <... futex resumed>) = 0 [pid 1301] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1310] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1307] chdir("./file0" [pid 1305] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1303] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1301] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1306] munmap(0x7fe6f03b1000, 138412032 [pid 1307] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1305] <... futex resumed>) = 0 [pid 1301] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1307] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1310] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1309] <... write resumed>) = 262144 [pid 1307] <... futex resumed>) = 1 [pid 1306] <... munmap resumed>) = 0 [pid 1305] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1303] <... futex resumed>) = 0 [pid 1301] <... futex resumed>) = 0 [pid 1306] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 7 [pid 1306] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1306] ioctl(7, LOOP_CLR_FD) = 0 [pid 1307] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1309] munmap(0x7fe6f03b1000, 138412032 [pid 1303] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1301] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1310] <... prctl resumed>) = 0 [pid 1307] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1305] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1303] <... futex resumed>) = 0 [pid 1309] <... munmap resumed>) = 0 [pid 1310] setpgid(0, 0 [pid 1307] creat("./bus", 000 [pid 1305] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1303] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1309] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 1310] <... setpgid resumed>) = 0 [pid 1307] <... creat resumed>) = 3 [pid 1305] <... futex resumed>) = 1 [pid 1301] <... futex resumed>) = 0 [pid 1309] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1309] ioctl(4, LOOP_CLR_FD [pid 1307] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1306] ioctl(7, LOOP_SET_FD, 6 [pid 1310] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1305] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1301] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1307] <... futex resumed>) = 1 [pid 1303] <... futex resumed>) = 0 [pid 1305] <... open resumed>) = 5 [pid 1301] <... futex resumed>) = 0 [pid 1310] <... openat resumed>) = 3 [pid 1307] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1305] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1303] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1301] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1309] <... ioctl resumed>) = 0 [pid 1306] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1306] close(7 [pid 1310] write(3, "1000", 4 [pid 1307] <... openat resumed>) = 4 [pid 1306] <... close resumed>) = 0 [pid 1305] <... futex resumed>) = 0 [pid 1303] <... futex resumed>) = 0 [pid 1301] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1310] <... write resumed>) = 4 [pid 1307] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1305] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1303] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1301] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1310] close(3 executing program [pid 1307] <... futex resumed>) = 0 [pid 1305] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1303] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1301] <... futex resumed>) = 0 [pid 1310] <... close resumed>) = 0 [pid 1307] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1305] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1303] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1301] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1310] write(1, "executing program\n", 18 [pid 1307] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1305] <... mmap resumed>) = 0x20000000 [pid 1303] <... futex resumed>) = 0 [pid 1310] <... write resumed>) = 18 [pid 1307] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1305] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1303] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1306] close(6 [pid 1310] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1307] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1306] <... close resumed>) = 0 [pid 1305] <... futex resumed>) = 1 [pid 1301] <... futex resumed>) = 0 [pid 1310] <... futex resumed>) = 0 [pid 1309] ioctl(4, LOOP_SET_FD, 3 [pid 1307] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1306] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1305] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1301] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1310] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1309] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1307] <... futex resumed>) = 1 [pid 1306] <... futex resumed>) = 1 [pid 1305] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1304] <... futex resumed>) = 0 [pid 1303] <... futex resumed>) = 0 [pid 1301] <... futex resumed>) = 0 [pid 1310] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1309] close(4 [pid 1307] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1306] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1305] memfd_create("syzkaller", 0 [pid 1304] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1303] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1301] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1310] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1309] <... close resumed>) = 0 [pid 1307] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1306] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1305] <... memfd_create resumed>) = 6 [pid 1304] <... futex resumed>) = 0 [pid 1303] <... futex resumed>) = 0 [pid 1310] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1309] close(3 [pid 1307] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1306] mknod(0x20000000, 000 [pid 1305] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1304] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1303] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1310] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1309] <... close resumed>) = 0 [pid 1307] <... open resumed>) = 5 [pid 1306] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1305] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1310] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1309] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1307] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1306] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1309] <... futex resumed>) = 1 [pid 1308] <... futex resumed>) = 0 [pid 1306] <... futex resumed>) = 1 [pid 1304] <... futex resumed>) = 0 [pid 1309] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1308] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1306] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1304] exit_group(0 [pid 1309] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1308] <... futex resumed>) = 0 [pid 1306] <... futex resumed>) = ? [pid 1304] <... exit_group resumed>) = ? [pid 1310] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1309] chdir("./file0" [pid 1308] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1307] <... futex resumed>) = 1 [pid 1306] +++ exited with 0 +++ [pid 1305] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1304] +++ exited with 0 +++ [pid 1303] <... futex resumed>) = 0 [pid 1310] <... mprotect resumed>) = 0 [pid 1309] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1307] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1304, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1309] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1309] <... futex resumed>) = 1 [pid 1308] <... futex resumed>) = 0 [pid 1307] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1305] <... write resumed>) = 131072 [pid 1303] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... restart_syscall resumed>) = 0 [pid 1310] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1309] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1308] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1307] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1305] munmap(0x7fe6f03b1000, 138412032 [pid 1303] <... futex resumed>) = 0 [pid 1310] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1309] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1308] <... futex resumed>) = 0 [pid 1309] creat("./bus", 000 [pid 1308] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1307] <... mmap resumed>) = 0x20000000 [pid 1303] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1310] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1309] <... creat resumed>) = 3 [pid 1307] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1305] <... munmap resumed>) = 0 [pid 1303] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 303] <... openat resumed>) = 3 [pid 1309] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] ioctl(3, LOOP_CLR_FD [pid 1309] <... futex resumed>) = 1 [pid 1308] <... futex resumed>) = 0 [pid 1307] <... futex resumed>) = 0 [pid 1305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1303] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... ioctl resumed>) = 0 [pid 1310] <... clone3 resumed> => {parent_tid=[1311]}, 88) = 1311 [pid 1309] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1308] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1307] memfd_create("syzkaller", 0 [pid 1303] <... futex resumed>) = 0 [pid 303] close(3./strace-static-x86_64: Process 1311 attached [pid 1310] rt_sigprocmask(SIG_SETMASK, [], [pid 1309] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1308] <... futex resumed>) = 0 [pid 1307] <... memfd_create resumed>) = 6 [pid 1305] <... openat resumed>) = 7 [pid 1303] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 303] <... close resumed>) = 0 [pid 1311] set_robust_list(0x7fe6f87d19a0, 24 [pid 1310] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1309] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1308] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1307] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1305] ioctl(7, LOOP_SET_FD, 6 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1311] <... set_robust_list resumed>) = 0 [pid 1310] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1309] <... openat resumed>) = 4 [pid 1307] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1305] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1311] rt_sigprocmask(SIG_SETMASK, [], [pid 1310] <... futex resumed>) = 0 [pid 1309] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1307] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1305] ioctl(7, LOOP_CLR_FD [pid 1310] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1307] <... write resumed>) = 131072 [pid 1305] <... ioctl resumed>) = 0 [pid 1307] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1307] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 7 [pid 1307] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1307] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1312 attached [pid 1312] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1305] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1305] close(7) = 0 [pid 1305] close(6) = 0 [pid 1307] ioctl(7, LOOP_SET_FD, 6 [pid 1305] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1307] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1305] <... futex resumed>) = 1 [pid 1301] <... futex resumed>) = 0 [pid 1311] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1309] <... futex resumed>) = 1 [pid 1308] <... futex resumed>) = 0 [pid 1307] close(7 [pid 1305] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1301] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1312 [pid 1311] memfd_create("syzkaller", 0 [pid 1309] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1308] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1307] <... close resumed>) = 0 [pid 1305] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1301] <... futex resumed>) = 0 [pid 1311] <... memfd_create resumed>) = 3 [pid 1309] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1308] <... futex resumed>) = 0 [pid 1307] close(6 [pid 1305] mknod(0x20000000, 000 [pid 1301] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1311] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1309] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1308] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1307] <... close resumed>) = 0 [pid 1305] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1311] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1309] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1307] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1305] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1309] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1307] <... futex resumed>) = 1 [pid 1305] <... futex resumed>) = 1 [pid 1303] <... futex resumed>) = 0 [pid 1301] <... futex resumed>) = 0 [pid 1309] <... futex resumed>) = 1 [pid 1308] <... futex resumed>) = 0 [pid 1307] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1305] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1303] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1301] exit_group(0 [pid 1309] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1308] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1307] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1305] <... futex resumed>) = ? [pid 1303] <... futex resumed>) = 0 [pid 1301] <... exit_group resumed>) = ? [pid 1311] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1309] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1308] <... futex resumed>) = 0 [pid 1307] mknod(0x20000000, 000 [pid 1305] +++ exited with 0 +++ [pid 1303] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1301] +++ exited with 0 +++ [pid 1312] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1309] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1308] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1307] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1312] <... prctl resumed>) = 0 [pid 1309] <... open resumed>) = 5 [pid 1307] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1301, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1312] setpgid(0, 0 [pid 1309] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1307] <... futex resumed>) = 1 [pid 1303] <... futex resumed>) = 0 [pid 1312] <... setpgid resumed>) = 0 [pid 1311] <... write resumed>) = 262144 [pid 1309] <... futex resumed>) = 1 [pid 1308] <... futex resumed>) = 0 [pid 1307] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1303] exit_group(0 [pid 1312] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1311] munmap(0x7fe6f03b1000, 138412032 [pid 1309] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1308] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1307] <... futex resumed>) = ? [pid 1303] <... exit_group resumed>) = ? [pid 1312] <... openat resumed>) = 3 [pid 1311] <... munmap resumed>) = 0 [pid 1309] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1308] <... futex resumed>) = 0 [pid 1307] +++ exited with 0 +++ [pid 1303] +++ exited with 0 +++ [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1311] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1309] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1308] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1303, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] <... openat resumed>) = 3 [pid 1312] write(3, "1000", 4 [pid 1311] <... openat resumed>) = 4 [pid 1309] <... mmap resumed>) = 0x20000000 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 302] ioctl(3, LOOP_CLR_FD [pid 1309] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1312] <... write resumed>) = 4 [pid 1311] ioctl(4, LOOP_SET_FD, 3 [pid 1309] <... futex resumed>) = 1 [pid 1308] <... futex resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 1311] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1309] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1308] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] close(3 [pid 1311] ioctl(4, LOOP_CLR_FD [pid 1309] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1308] <... futex resumed>) = 0 [pid 302] <... close resumed>) = 0 [pid 1312] close(3 [pid 1311] <... ioctl resumed>) = 0 [pid 1309] memfd_create("syzkaller", 0 [pid 1308] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program [pid 1312] <... close resumed>) = 0 [pid 1309] <... memfd_create resumed>) = 6 [pid 1312] write(1, "executing program\n", 18) = 18 [pid 1309] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1312] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1309] <... mmap resumed>) = 0x7fe6f03b1000 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1313 [pid 1312] <... futex resumed>) = 0 [pid 1312] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1312] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1312] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1312] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1312] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1309] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1312] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[1314]}, 88) = 1314 [pid 1312] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1312] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1311] ioctl(4, LOOP_SET_FD, 3 [pid 1309] <... write resumed>) = 131072 [pid 1312] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1311] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1309] munmap(0x7fe6f03b1000, 138412032./strace-static-x86_64: Process 1313 attached [pid 1311] close(4 [pid 1309] <... munmap resumed>) = 0 [pid 1309] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1311] <... close resumed>) = 0 [pid 1311] close(3 [pid 1309] <... openat resumed>) = 7 [pid 1309] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1309] ioctl(7, LOOP_CLR_FD) = 0 [pid 1313] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1313] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1311] <... close resumed>) = 0 [pid 1311] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1310] <... futex resumed>) = 0 [pid 1311] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1310] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1311] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1310] <... futex resumed>) = 0 [pid 1311] chdir("./file0" [pid 1310] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1311] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1311] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1313] <... prctl resumed>) = 0 [pid 1311] <... futex resumed>) = 1 [pid 1310] <... futex resumed>) = 0 [pid 1309] ioctl(7, LOOP_SET_FD, 6 [pid 1311] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1310] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1311] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1310] <... futex resumed>) = 0 [pid 1309] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1311] creat("./bus", 000 [pid 1310] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1309] close(7 [pid 1311] <... creat resumed>) = 3 [pid 1309] <... close resumed>) = 0 [pid 1311] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1309] close(6 [pid 1310] <... futex resumed>) = 0 [pid 1313] setpgid(0, 0 [pid 1311] <... futex resumed>) = 1 [pid 1310] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1309] <... close resumed>) = 0 [pid 1311] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1310] <... futex resumed>) = 0 [pid 1309] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1310] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1309] <... futex resumed>) = 1 [pid 1308] <... futex resumed>) = 0 [pid 1309] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1308] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1309] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1308] <... futex resumed>) = 0 [pid 1309] mknod(0x20000000, 000 [pid 1308] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1311] <... openat resumed>) = 4 [pid 1309] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1313] <... setpgid resumed>) = 0 [pid 1311] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1309] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... restart_syscall resumed>) = 0 [pid 1313] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1311] <... futex resumed>) = 1 [pid 1310] <... futex resumed>) = 0 [pid 1309] <... futex resumed>) = 1 [pid 1308] <... futex resumed>) = 0 [pid 1311] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1310] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1309] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1308] exit_group(0 [pid 1310] <... futex resumed>) = 0 [pid 1309] <... futex resumed>) = ? [pid 1308] <... exit_group resumed>) = ? [pid 1310] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1309] +++ exited with 0 +++ [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR./strace-static-x86_64: Process 1314 attached [pid 1313] <... openat resumed>) = 3 [pid 1314] set_robust_list(0x7fe6f87d19a0, 24 [pid 1313] write(3, "1000", 4 [pid 1314] <... set_robust_list resumed>) = 0 [pid 1313] <... write resumed>) = 4 [pid 1308] +++ exited with 0 +++ [pid 1311] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 305] <... openat resumed>) = 3 [pid 1311] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 305] ioctl(3, LOOP_CLR_FD) = 0 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1308, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] close(3 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 305] <... close resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1314] rt_sigprocmask(SIG_SETMASK, [], [pid 1313] close(3 [pid 1314] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1313] <... close resumed>) = 0 [pid 1311] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1311] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1315 [pid 1311] <... futex resumed>) = 1 [pid 1310] <... futex resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1311] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1310] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1311] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1310] <... futex resumed>) = 0 [pid 304] <... openat resumed>) = 3 [pid 1311] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1310] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] ioctl(3, LOOP_CLR_FD [pid 1311] <... open resumed>) = 5 ./strace-static-x86_64: Process 1315 attached [pid 1314] memfd_create("syzkaller", 0 [pid 1313] write(1, "executing program\n", 18 [pid 1311] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... ioctl resumed>) = 0 executing program [pid 1311] <... futex resumed>) = 1 [pid 1310] <... futex resumed>) = 0 [pid 304] close(3 [pid 1315] set_robust_list(0x5555636e06a0, 24 [pid 1314] <... memfd_create resumed>) = 3 [pid 1313] <... write resumed>) = 18 [pid 1311] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1310] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... close resumed>) = 0 [pid 1311] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1310] <... futex resumed>) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1315] <... set_robust_list resumed>) = 0 [pid 1314] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1313] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1311] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1310] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1315] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1314] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1313] <... futex resumed>) = 0 [pid 1311] <... mmap resumed>) = 0x20000000 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1316 [pid 1311] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1310] <... futex resumed>) = 0 [pid 1311] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1310] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1311] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1310] <... futex resumed>) = 0 [pid 1311] memfd_create("syzkaller", 0 [pid 1310] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1311] <... memfd_create resumed>) = 6 [pid 1311] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1314] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1313] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1311] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1315] <... prctl resumed>) = 0 [pid 1313] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1311] <... write resumed>) = 131072 [pid 1311] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1311] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 7 [pid 1311] ioctl(7, LOOP_SET_FD, 6 [pid 1314] <... write resumed>) = 262144 [pid 1313] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1311] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1314] munmap(0x7fe6f03b1000, 138412032 [pid 1313] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1311] ioctl(7, LOOP_CLR_FD [pid 1313] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1311] <... ioctl resumed>) = 0 [pid 1313] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1314] <... munmap resumed>) = 0 [pid 1313] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1314] openat(AT_FDCWD, "/dev/loop1", O_RDWR./strace-static-x86_64: Process 1316 attached [pid 1313] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1314] <... openat resumed>) = 4 [pid 1313] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1316] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1314] ioctl(4, LOOP_SET_FD, 3 [pid 1313] <... clone3 resumed> => {parent_tid=[1317]}, 88) = 1317 [pid 1313] rt_sigprocmask(SIG_SETMASK, [], [pid 1314] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1313] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1313] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1314] ioctl(4, LOOP_CLR_FD [pid 1313] <... futex resumed>) = 0 [pid 1313] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1314] <... ioctl resumed>) = 0 [pid 1315] setpgid(0, 0 [pid 1311] ioctl(7, LOOP_SET_FD, 6./strace-static-x86_64: Process 1317 attached [pid 1315] <... setpgid resumed>) = 0 [pid 1311] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1311] close(7) = 0 [pid 1311] close(6 [pid 1317] set_robust_list(0x7fe6f87d19a0, 24 [pid 1316] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1315] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1311] <... close resumed>) = 0 [pid 1311] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1310] <... futex resumed>) = 0 [pid 1311] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1310] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1311] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1310] <... futex resumed>) = 0 [pid 1311] mknod(0x20000000, 000 [pid 1310] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1311] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1311] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1310] <... futex resumed>) = 0 [pid 1311] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1310] exit_group(0 [pid 1311] <... futex resumed>) = ? [pid 1310] <... exit_group resumed>) = ? [pid 1317] <... set_robust_list resumed>) = 0 [pid 1316] <... prctl resumed>) = 0 [pid 1315] <... openat resumed>) = 3 [pid 1311] +++ exited with 0 +++ [pid 1310] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1310, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 1315] write(3, "1000", 4 [pid 1317] rt_sigprocmask(SIG_SETMASK, [], [pid 1314] ioctl(4, LOOP_SET_FD, 3 [pid 1316] setpgid(0, 0 [pid 1315] <... write resumed>) = 4 [pid 1317] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1316] <... setpgid resumed>) = 0 [pid 1315] close(3 [pid 1314] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] <... restart_syscall resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555636e0690) = 1318 [pid 1314] close(4 [pid 1315] <... close resumed>) = 0 [pid 1314] <... close resumed>) = 0 [pid 1315] write(1, "executing program\n", 18executing program [pid 1317] memfd_create("syzkaller", 0 [pid 1315] <... write resumed>) = 18 [pid 1314] close(3) = 0 [pid 1315] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1314] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1315] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1314] <... futex resumed>) = 1 [pid 1312] <... futex resumed>) = 0 [pid 1315] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1314] chdir("./file0" [pid 1312] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1315] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1312] <... futex resumed>) = 0 [pid 1315] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1314] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1315] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1312] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1314] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1315] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1312] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1315] <... mprotect resumed>) = 0 [pid 1314] <... futex resumed>) = 0 [pid 1312] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1315] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1312] <... futex resumed>) = 0 [pid 1315] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1314] creat("./bus", 000 [pid 1312] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1315] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1314] <... creat resumed>) = 3 [pid 1314] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1315] <... clone3 resumed> => {parent_tid=[1319]}, 88) = 1319 [pid 1315] rt_sigprocmask(SIG_SETMASK, [], [pid 1314] <... futex resumed>) = 1 [pid 1315] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1312] <... futex resumed>) = 0 [pid 1315] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1314] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1312] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1315] <... futex resumed>) = 0 [pid 1314] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1312] <... futex resumed>) = 0 [pid 1315] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1314] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1312] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1314] <... openat resumed>) = 4 ./strace-static-x86_64: Process 1319 attached ./strace-static-x86_64: Process 1318 attached [pid 1317] <... memfd_create resumed>) = 3 [pid 1316] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1314] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1312] <... futex resumed>) = 0 [pid 1317] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1314] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1312] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1314] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1312] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1314] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1312] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1314] <... futex resumed>) = 0 [pid 1312] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1314] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1312] <... futex resumed>) = 0 [pid 1314] <... open resumed>) = 5 [pid 1312] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1314] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1312] <... futex resumed>) = 0 [pid 1312] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1314] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1316] <... openat resumed>) = 3 [pid 1312] <... futex resumed>) = 0 [pid 1312] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1314] <... mmap resumed>) = 0x20000000 [pid 1314] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1316] write(3, "1000", 4 [pid 1314] <... futex resumed>) = 1 [pid 1312] <... futex resumed>) = 0 [pid 1314] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1312] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1314] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1312] <... futex resumed>) = 0 [pid 1314] memfd_create("syzkaller", 0 [pid 1312] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1314] <... memfd_create resumed>) = 6 [pid 1314] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1314] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 1316] <... write resumed>) = 4 [pid 1319] set_robust_list(0x7fe6f87d19a0, 24 [pid 1318] set_robust_list(0x5555636e06a0, 24 [pid 1317] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1316] close(3 [pid 1314] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1314] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 7 [pid 1316] <... close resumed>) = 0 executing program [pid 1314] ioctl(7, LOOP_SET_FD, 6 [pid 1316] write(1, "executing program\n", 18 [pid 1318] <... set_robust_list resumed>) = 0 [pid 1317] <... write resumed>) = 262144 [pid 1316] <... write resumed>) = 18 [pid 1314] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1314] ioctl(7, LOOP_CLR_FD [pid 1316] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1314] <... ioctl resumed>) = 0 [pid 1316] <... futex resumed>) = 0 [pid 1318] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1316] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1318] <... prctl resumed>) = 0 [pid 1319] <... set_robust_list resumed>) = 0 [pid 1317] munmap(0x7fe6f03b1000, 138412032 [pid 1316] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1318] setpgid(0, 0 [pid 1316] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1318] <... setpgid resumed>) = 0 [pid 1317] <... munmap resumed>) = 0 [pid 1316] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1318] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1316] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1314] ioctl(7, LOOP_SET_FD, 6 [pid 1316] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1318] <... openat resumed>) = 3 [pid 1314] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1318] write(3, "1000", 4 [pid 1316] <... mprotect resumed>) = 0 [pid 1314] close(7 [pid 1318] <... write resumed>) = 4 [pid 1316] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1314] <... close resumed>) = 0 [pid 1314] close(6 [pid 1316] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1318] close(3 [pid 1314] <... close resumed>) = 0 [pid 1316] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1318] <... close resumed>) = 0 [pid 1314] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1318] write(1, "executing program\n", 18 [pid 1316] <... clone3 resumed> => {parent_tid=[1320]}, 88) = 1320 [pid 1312] <... futex resumed>) = 0 [pid 1312] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1314] mknod(0x20000000, 000executing program [pid 1318] <... write resumed>) = 18 [pid 1316] rt_sigprocmask(SIG_SETMASK, [], [pid 1314] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1312] <... futex resumed>) = 0 [pid 1314] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1312] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1316] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1318] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1317] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1314] <... futex resumed>) = 0 [pid 1312] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1316] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1314] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1318] <... futex resumed>) = 0 [pid 1316] <... futex resumed>) = 0 [pid 1312] exit_group(0 [pid 1317] <... openat resumed>) = 4 [pid 1314] <... futex resumed>) = ? [pid 1312] <... exit_group resumed>) = ? [pid 1318] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1317] ioctl(4, LOOP_SET_FD, 3 [pid 1316] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1314] +++ exited with 0 +++ [pid 1312] +++ exited with 0 +++ [pid 1318] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1317] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1312, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1318] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1317] ioctl(4, LOOP_CLR_FD [pid 1319] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1318] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1317] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 1320 attached [pid 1320] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1320] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1320] memfd_create("syzkaller", 0) = 3 [pid 1320] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1318] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1319] memfd_create("syzkaller", 0 [pid 1318] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1318] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1319] <... memfd_create resumed>) = 3 [pid 1319] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1318] <... mprotect resumed>) = 0 [pid 1319] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1318] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1320] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 1320] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1320] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 1320] ioctl(4, LOOP_SET_FD, 3 [pid 1319] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1318] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1320] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1320] ioctl(4, LOOP_CLR_FD) = 0 [pid 1317] ioctl(4, LOOP_SET_FD, 3 [pid 1318] <... clone3 resumed> => {parent_tid=[1321]}, 88) = 1321 [pid 1317] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1318] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1317] close(4 [pid 1318] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1317] <... close resumed>) = 0 [pid 1318] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1317] close(3) = 0 [pid 1320] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1320] close(4) = 0 [pid 1320] close(3 [pid 1319] <... write resumed>) = 262144 [pid 1317] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1320] <... close resumed>) = 0 [pid 1320] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1317] <... futex resumed>) = 1 [pid 1316] <... futex resumed>) = 0 [pid 1313] <... futex resumed>) = 0 [pid 1317] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1316] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1313] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1317] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1316] <... futex resumed>) = 0 [pid 1313] <... futex resumed>) = 0 [pid 1316] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1317] chdir("./file0" [pid 1313] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1320] chdir("./file0" [pid 1317] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1320] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1320] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1317] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1316] <... futex resumed>) = 0 [pid 1317] <... futex resumed>) = 1 [pid 1316] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1313] <... futex resumed>) = 0 [pid 1319] munmap(0x7fe6f03b1000, 138412032 [pid 1317] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1316] <... futex resumed>) = 0 [pid 1313] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1317] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1316] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1313] <... futex resumed>) = 0 [pid 1317] creat("./bus", 000 [pid 1313] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... restart_syscall resumed>) = 0 [pid 1319] <... munmap resumed>) = 0 [pid 1317] <... creat resumed>) = 3 [pid 1319] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1317] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1319] <... openat resumed>) = 4 [pid 1317] <... futex resumed>) = 1 [pid 1313] <... futex resumed>) = 0 [pid 1319] ioctl(4, LOOP_SET_FD, 3 [pid 1317] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1313] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1319] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1317] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1313] <... futex resumed>) = 0 [pid 1319] ioctl(4, LOOP_CLR_FD [pid 1317] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1313] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1319] <... ioctl resumed>) = 0 [pid 1317] <... openat resumed>) = 4 [pid 1317] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1313] <... futex resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1317] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1313] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1317] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1313] <... futex resumed>) = 0 [pid 1317] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1313] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1317] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 303] <... openat resumed>) = 3 [pid 1317] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] ioctl(3, LOOP_CLR_FD [pid 1317] <... futex resumed>) = 1 [pid 1313] <... futex resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 1317] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1313] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] close(3 [pid 1317] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1313] <... futex resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 1317] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 1321 attached [pid 1317] <... open resumed>) = 5 [pid 1313] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1319] ioctl(4, LOOP_SET_FD, 3 [pid 1317] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1322 [pid 1319] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1317] <... futex resumed>) = 0 [pid 1313] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1319] close(4 [pid 1317] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1313] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1317] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1313] <... futex resumed>) = 0 [pid 1319] <... close resumed>) = 0 [pid 1317] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1313] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1320] creat("./bus", 000 [pid 1317] <... mmap resumed>) = 0x20000000 [pid 1319] close(3 [pid 1317] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1313] <... futex resumed>) = 0 [pid 1313] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1320] <... creat resumed>) = 3 [pid 1317] memfd_create("syzkaller", 0 [pid 1313] <... futex resumed>) = 0 [pid 1320] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1313] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1317] <... memfd_create resumed>) = 6 [pid 1320] <... futex resumed>) = 1 [pid 1317] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1316] <... futex resumed>) = 0 [pid 1320] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1316] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1317] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1316] <... futex resumed>) = 0 [pid 1316] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1320] <... openat resumed>) = 4 [pid 1320] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1320] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1317] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1316] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1316] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1317] <... write resumed>) = 131072 [pid 1316] <... futex resumed>) = 1 [pid 1320] <... futex resumed>) = 0 [pid 1317] munmap(0x7fe6f03b1000, 138412032 [pid 1316] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1320] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1317] <... munmap resumed>) = 0 [pid 1320] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1320] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1319] <... close resumed>) = 0 [pid 1317] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1316] <... futex resumed>) = 0 [pid 1316] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1316] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1320] <... futex resumed>) = 1 [pid 1320] open("./bus", O_RDWR|O_SYNC|O_DIRECT) = 5 [pid 1317] <... openat resumed>) = 7 [pid 1319] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1322 attached [pid 1321] set_robust_list(0x7fe6f87d19a0, 24 [pid 1317] ioctl(7, LOOP_SET_FD, 6 [pid 1320] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1316] <... futex resumed>) = 0 [pid 1316] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1316] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1320] <... futex resumed>) = 1 [pid 1320] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1322] set_robust_list(0x5555636e06a0, 24 [pid 1321] <... set_robust_list resumed>) = 0 [pid 1320] <... mmap resumed>) = 0x20000000 [pid 1319] <... futex resumed>) = 1 [pid 1317] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1315] <... futex resumed>) = 0 [pid 1320] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1316] <... futex resumed>) = 0 [pid 1316] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1316] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1320] <... futex resumed>) = 1 [pid 1320] memfd_create("syzkaller", 0 [pid 1319] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1317] ioctl(7, LOOP_CLR_FD [pid 1322] <... set_robust_list resumed>) = 0 [pid 1321] rt_sigprocmask(SIG_SETMASK, [], [pid 1319] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1317] <... ioctl resumed>) = 0 [pid 1315] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1319] chdir("./file0" [pid 1315] <... futex resumed>) = 0 [pid 1319] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1315] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1319] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1315] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1319] <... futex resumed>) = 0 [pid 1315] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1319] creat("./bus", 000 [pid 1315] <... futex resumed>) = 0 [pid 1319] <... creat resumed>) = 3 [pid 1315] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1319] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1315] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1319] <... futex resumed>) = 0 [pid 1315] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1322] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1321] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1320] <... memfd_create resumed>) = 6 [pid 1319] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1315] <... futex resumed>) = 0 [pid 1321] memfd_create("syzkaller", 0 [pid 1319] <... openat resumed>) = 4 [pid 1317] ioctl(7, LOOP_SET_FD, 6 [pid 1322] <... prctl resumed>) = 0 [pid 1321] <... memfd_create resumed>) = 3 [pid 1319] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1317] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1315] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1320] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1322] setpgid(0, 0 [pid 1321] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1320] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1319] <... futex resumed>) = 0 [pid 1317] close(7 [pid 1315] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1322] <... setpgid resumed>) = 0 [pid 1321] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1320] <... write resumed>) = 131072 [pid 1319] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1317] <... close resumed>) = 0 [pid 1315] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1320] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1320] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 7 [pid 1320] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1320] ioctl(7, LOOP_CLR_FD) = 0 [pid 1321] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1319] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1317] close(6 [pid 1315] <... futex resumed>) = 0 [pid 1322] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1319] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1320] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1320] close(7) = 0 [pid 1317] <... close resumed>) = 0 [pid 1315] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1320] close(6 [pid 1322] <... openat resumed>) = 3 [pid 1320] <... close resumed>) = 0 [pid 1317] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1320] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1316] <... futex resumed>) = 0 [pid 1316] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1316] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1320] <... futex resumed>) = 1 [pid 1320] mknod(0x20000000, 000) = -1 EEXIST (File exists) [pid 1320] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1316] <... futex resumed>) = 0 [pid 1316] exit_group(0) = ? [pid 1320] <... futex resumed>) = ? [pid 1322] write(3, "1000", 4 [pid 1321] <... write resumed>) = 262144 [pid 1320] +++ exited with 0 +++ [pid 1319] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1317] <... futex resumed>) = 1 [pid 1316] +++ exited with 0 +++ [pid 1313] <... futex resumed>) = 0 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1316, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 1322] <... write resumed>) = 4 [pid 1321] munmap(0x7fe6f03b1000, 138412032 [pid 1319] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1317] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1313] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1322] close(3 [pid 1321] <... munmap resumed>) = 0 [pid 1319] <... futex resumed>) = 1 [pid 1317] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1315] <... futex resumed>) = 0 [pid 1313] <... futex resumed>) = 0 [pid 1322] <... close resumed>) = 0 [pid 1321] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1319] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1317] mknod(0x20000000, 000 [pid 1315] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1313] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1322] write(1, "executing program\n", 18executing program [pid 1321] <... openat resumed>) = 4 [pid 1319] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1317] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1315] <... futex resumed>) = 0 [pid 1322] <... write resumed>) = 18 [pid 304] <... restart_syscall resumed>) = 0 [pid 1322] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1321] ioctl(4, LOOP_SET_FD, 3 [pid 1319] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1317] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1315] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1322] <... futex resumed>) = 0 [pid 1321] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1319] <... open resumed>) = 5 [pid 1317] <... futex resumed>) = 1 [pid 1313] <... futex resumed>) = 0 [pid 304] <... openat resumed>) = 3 [pid 304] ioctl(3, LOOP_CLR_FD) = 0 [pid 304] close(3) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1322] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1321] ioctl(4, LOOP_CLR_FD [pid 1319] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1317] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1313] exit_group(0 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1324 ./strace-static-x86_64: Process 1324 attached [pid 1322] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1321] <... ioctl resumed>) = 0 [pid 1319] <... futex resumed>) = 1 [pid 1317] <... futex resumed>) = ? [pid 1315] <... futex resumed>) = 0 [pid 1313] <... exit_group resumed>) = ? [pid 1324] set_robust_list(0x5555636e06a0, 24 [pid 1322] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1319] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1317] +++ exited with 0 +++ [pid 1315] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1313] +++ exited with 0 +++ [pid 1324] <... set_robust_list resumed>) = 0 [pid 1322] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1319] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1315] <... futex resumed>) = 0 [pid 1324] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1322] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1319] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1315] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1313, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1324] <... prctl resumed>) = 0 [pid 1322] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1321] ioctl(4, LOOP_SET_FD, 3 [pid 1319] <... mmap resumed>) = 0x20000000 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 1324] setpgid(0, 0 [pid 1322] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1321] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1319] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1324] <... setpgid resumed>) = 0 [pid 1322] <... mprotect resumed>) = 0 [pid 1321] close(4 [pid 1319] <... futex resumed>) = 1 [pid 1315] <... futex resumed>) = 0 [pid 1324] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1322] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1321] <... close resumed>) = 0 [pid 1319] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1315] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1324] <... openat resumed>) = 3 [pid 1322] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1321] close(3 [pid 1319] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1315] <... futex resumed>) = 0 [pid 1324] write(3, "1000", 4 [pid 1322] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1321] <... close resumed>) = 0 [pid 1319] memfd_create("syzkaller", 0 [pid 1315] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 302] <... restart_syscall resumed>) = 0 [pid 1324] <... write resumed>) = 4 [pid 1321] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1319] <... memfd_create resumed>) = 6 [pid 1324] close(3 [pid 1322] <... clone3 resumed> => {parent_tid=[1325]}, 88) = 1325 [pid 1321] <... futex resumed>) = 1 [pid 1319] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1318] <... futex resumed>) = 0 [pid 1324] <... close resumed>) = 0 [pid 1322] rt_sigprocmask(SIG_SETMASK, [], [pid 1321] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1319] <... mmap resumed>) = 0x7fe6f03b1000 executing program [pid 1318] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1324] write(1, "executing program\n", 18 [pid 1322] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1321] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1319] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1318] <... futex resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 1325 attached [pid 1324] <... write resumed>) = 18 [pid 1322] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1321] chdir("./file0" [pid 1319] <... write resumed>) = 131072 [pid 1318] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1325] set_robust_list(0x7fe6f87d19a0, 24 [pid 1324] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1322] <... futex resumed>) = 0 [pid 1321] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1319] munmap(0x7fe6f03b1000, 138412032 [pid 302] <... openat resumed>) = 3 [pid 1324] <... futex resumed>) = 0 [pid 1322] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1321] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1319] <... munmap resumed>) = 0 [pid 1324] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1321] <... futex resumed>) = 1 [pid 1319] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1318] <... futex resumed>) = 0 [pid 1324] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1321] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1319] <... openat resumed>) = 7 [pid 1318] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1324] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1321] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1319] ioctl(7, LOOP_SET_FD, 6 [pid 1318] <... futex resumed>) = 0 [pid 1324] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1321] creat("./bus", 000 [pid 1319] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1318] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1324] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1321] <... creat resumed>) = 3 [pid 1319] ioctl(7, LOOP_CLR_FD [pid 1324] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1321] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1319] <... ioctl resumed>) = 0 [pid 1324] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1321] <... futex resumed>) = 1 [pid 1318] <... futex resumed>) = 0 [pid 1324] <... mprotect resumed>) = 0 [pid 1321] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1318] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1324] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1321] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1318] <... futex resumed>) = 0 [pid 1324] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1321] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1318] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1324] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1321] <... openat resumed>) = 4 [pid 1321] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] ioctl(3, LOOP_CLR_FD [pid 1325] <... set_robust_list resumed>) = 0 [pid 1324] <... clone3 resumed> => {parent_tid=[1326]}, 88) = 1326 [pid 1321] <... futex resumed>) = 1 [pid 1319] ioctl(7, LOOP_SET_FD, 6 [pid 1318] <... futex resumed>) = 0 [pid 1324] rt_sigprocmask(SIG_SETMASK, [], [pid 1321] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1319] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1318] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... ioctl resumed>) = 0 [pid 1324] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1321] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1319] close(7 [pid 1318] <... futex resumed>) = 0 [pid 302] close(3 [pid 1324] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1321] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1319] <... close resumed>) = 0 [pid 1318] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1324] <... futex resumed>) = 0 [pid 1319] close(6 [pid 302] <... close resumed>) = 0 [pid 1324] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1319] <... close resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1325] rt_sigprocmask(SIG_SETMASK, [], [pid 1319] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1315] <... futex resumed>) = 0 [pid 1325] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1319] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1315] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1319] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1315] <... futex resumed>) = 0 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1327 [pid 1325] memfd_create("syzkaller", 0 [pid 1319] mknod(0x20000000, 000 [pid 1315] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1319] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1319] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1325] <... memfd_create resumed>) = 3 [pid 1315] <... futex resumed>) = 0 [pid 1319] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1315] exit_group(0 [pid 1319] <... futex resumed>) = ? [pid 1315] <... exit_group resumed>) = ? [pid 1325] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1319] +++ exited with 0 +++ [pid 1315] +++ exited with 0 +++ [pid 1325] <... mmap resumed>) = 0x7fe6f03b1000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1315, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1321] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1321] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1318] <... futex resumed>) = 0 [pid 1321] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1318] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1321] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1318] <... futex resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1321] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1318] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1321] <... open resumed>) = 5 [pid 305] <... openat resumed>) = 3 [pid 1321] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1318] <... futex resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 1321] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1318] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... ioctl resumed>) = 0 [pid 1321] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1318] <... futex resumed>) = 0 [pid 305] close(3 [pid 1321] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1318] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1325] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1321] <... mmap resumed>) = 0x20000000 [pid 305] <... close resumed>) = 0 [pid 1321] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1318] <... futex resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1321] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1318] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1321] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1318] <... futex resumed>) = 0 [pid 1321] memfd_create("syzkaller", 0 [pid 1318] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1321] <... memfd_create resumed>) = 6 [pid 1321] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1328 [pid 1321] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1325] <... write resumed>) = 262144 [pid 1321] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 1321] munmap(0x7fe6f03b1000, 138412032 [pid 1325] munmap(0x7fe6f03b1000, 138412032 [pid 1321] <... munmap resumed>) = 0 [pid 1321] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 7 [pid 1321] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1321] ioctl(7, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1328 attached [pid 1328] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1328] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 1328] setpgid(0, 0) = 0 [pid 1321] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1321] close(7) = 0 [pid 1321] close(6) = 0 [pid 1321] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1318] <... futex resumed>) = 0 [pid 1321] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1318] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1321] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1318] <... futex resumed>) = 0 [pid 1321] mknod(0x20000000, 000 [pid 1318] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1321] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1321] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1318] <... futex resumed>) = 0 [pid 1325] <... munmap resumed>) = 0 [pid 1321] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1318] exit_group(0 [pid 1321] <... futex resumed>) = ? [pid 1318] <... exit_group resumed>) = ? [pid 1325] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1321] +++ exited with 0 +++ [pid 1318] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1318, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 1325] <... openat resumed>) = 4 ./strace-static-x86_64: Process 1327 attached [pid 1327] set_robust_list(0x5555636e06a0, 24 [pid 1325] ioctl(4, LOOP_SET_FD, 3 [pid 1328] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 1328] write(3, "1000", 4) = 4 [pid 306] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 1326 attached [pid 1327] <... set_robust_list resumed>) = 0 [pid 1325] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1325] ioctl(4, LOOP_CLR_FD [pid 1328] close(3 [pid 1325] <... ioctl resumed>) = 0 [pid 1327] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1326] set_robust_list(0x7fe6f87d19a0, 24 [pid 1328] <... close resumed>) = 0 [pid 1327] <... prctl resumed>) = 0 [pid 1326] <... set_robust_list resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1328] write(1, "executing program\n", 18 [pid 1327] setpgid(0, 0 [pid 1326] rt_sigprocmask(SIG_SETMASK, [], [pid 306] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 1327] <... setpgid resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 1326] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 306] close(3executing program [pid 1328] <... write resumed>) = 18 [pid 1327] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1326] memfd_create("syzkaller", 0 [pid 306] <... close resumed>) = 0 [pid 1328] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1327] <... openat resumed>) = 3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1326] <... memfd_create resumed>) = 3 [pid 1328] <... futex resumed>) = 0 [pid 1328] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1328] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1327] write(3, "1000", 4 [pid 1326] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1328] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1327] <... write resumed>) = 4 [pid 1326] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1325] ioctl(4, LOOP_SET_FD, 3 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1329 [pid 1327] close(3 [pid 1325] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1327] <... close resumed>) = 0 [pid 1325] close(4 [pid 1328] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1328] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1328] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1328] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[1330]}, 88) = 1330 [pid 1328] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1328] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1328] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1325] <... close resumed>) = 0 [pid 1327] write(1, "executing program\n", 18 [pid 1325] close(3./strace-static-x86_64: Process 1329 attached [pid 1329] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1329] prctl(PR_SET_PDEATHSIG, SIGKILLexecuting program [pid 1327] <... write resumed>) = 18 [pid 1325] <... close resumed>) = 0 [pid 1327] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1325] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1322] <... futex resumed>) = 0 [pid 1322] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1327] <... futex resumed>) = 0 [pid 1325] <... futex resumed>) = 1 [pid 1322] <... futex resumed>) = 0 [pid 1327] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1325] chdir("./file0" [pid 1322] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1327] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1325] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1327] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1325] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1327] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1325] <... futex resumed>) = 1 [pid 1327] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1322] <... futex resumed>) = 0 [pid 1327] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1325] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1322] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1327] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1326] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1325] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1322] <... futex resumed>) = 0 [pid 1329] <... prctl resumed>) = 0 [pid 1327] <... mprotect resumed>) = 0 [pid 1325] creat("./bus", 000 [pid 1322] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1329] setpgid(0, 0 [pid 1327] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1325] <... creat resumed>) = 3 [pid 1329] <... setpgid resumed>) = 0 [pid 1327] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1325] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1327] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1329] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1325] <... futex resumed>) = 1 [pid 1322] <... futex resumed>) = 0 [pid 1329] <... openat resumed>) = 3 [pid 1325] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1322] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1329] write(3, "1000", 4 [pid 1327] <... clone3 resumed> => {parent_tid=[1331]}, 88) = 1331 [pid 1322] <... futex resumed>) = 0 [pid 1329] <... write resumed>) = 4 [pid 1327] rt_sigprocmask(SIG_SETMASK, [], [pid 1325] <... openat resumed>) = 4 [pid 1322] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1329] close(3 [pid 1327] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1325] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1322] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) executing program [pid 1329] <... close resumed>) = 0 [pid 1327] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1325] <... futex resumed>) = 0 [pid 1322] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1329] write(1, "executing program\n", 18 [pid 1327] <... futex resumed>) = 0 [pid 1325] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1322] <... futex resumed>) = 0 [pid 1329] <... write resumed>) = 18 [pid 1327] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1325] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1322] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1329] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1325] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1329] <... futex resumed>) = 0 [pid 1325] <... futex resumed>) = 1 [pid 1322] <... futex resumed>) = 0 [pid 1329] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1325] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1322] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1329] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1325] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1322] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1330 attached [pid 1329] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1325] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1322] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1330] set_robust_list(0x7fe6f87d19a0, 24 [pid 1329] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1326] <... write resumed>) = 262144 [pid 1325] <... open resumed>) = 5 [pid 1330] <... set_robust_list resumed>) = 0 [pid 1329] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1326] munmap(0x7fe6f03b1000, 138412032 [pid 1325] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1330] rt_sigprocmask(SIG_SETMASK, [], [pid 1329] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1326] <... munmap resumed>) = 0 [pid 1325] <... futex resumed>) = 1 [pid 1322] <... futex resumed>) = 0 [pid 1330] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1329] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1326] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1325] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1322] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1330] memfd_create("syzkaller", 0 [pid 1329] <... mprotect resumed>) = 0 [pid 1326] <... openat resumed>) = 4 [pid 1325] <... mmap resumed>) = 0x20000000 [pid 1322] <... futex resumed>) = 0 [pid 1330] <... memfd_create resumed>) = 3 [pid 1329] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1326] ioctl(4, LOOP_SET_FD, 3 [pid 1325] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1322] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 1331 attached [pid 1330] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1329] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1326] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1325] <... futex resumed>) = 0 [pid 1322] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1331] set_robust_list(0x7fe6f87d19a0, 24 [pid 1330] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1329] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1326] ioctl(4, LOOP_CLR_FD [pid 1325] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1322] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1331] <... set_robust_list resumed>) = 0 [pid 1330] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1326] <... ioctl resumed>) = 0 [pid 1325] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1322] <... futex resumed>) = 0 [pid 1331] rt_sigprocmask(SIG_SETMASK, [], [pid 1329] <... clone3 resumed> => {parent_tid=[1332]}, 88) = 1332 [pid 1322] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1331] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1330] <... write resumed>) = 262144 [pid 1329] rt_sigprocmask(SIG_SETMASK, [], [pid 1325] memfd_create("syzkaller", 0 [pid 1331] memfd_create("syzkaller", 0 [pid 1329] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1331] <... memfd_create resumed>) = 3 [pid 1329] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1326] ioctl(4, LOOP_SET_FD, 3 [pid 1325] <... memfd_create resumed>) = 6 [pid 1331] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1329] <... futex resumed>) = 0 [pid 1331] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1329] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1326] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1325] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1326] close(4 [pid 1325] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1330] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1330] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 1330] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1330] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1332 attached [pid 1325] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1326] <... close resumed>) = 0 [pid 1332] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1332] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1325] <... write resumed>) = 131072 [pid 1326] close(3 [pid 1332] memfd_create("syzkaller", 0 [pid 1330] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1330] close(4) = 0 [pid 1330] close(3) = 0 [pid 1326] <... close resumed>) = 0 [pid 1325] munmap(0x7fe6f03b1000, 138412032 [pid 1326] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1330] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1328] <... futex resumed>) = 0 [pid 1328] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1325] <... munmap resumed>) = 0 [pid 1330] <... futex resumed>) = 1 [pid 1328] <... futex resumed>) = 0 [pid 1326] <... futex resumed>) = 1 [pid 1324] <... futex resumed>) = 0 [pid 1330] chdir("./file0" [pid 1328] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1324] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1330] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1324] <... futex resumed>) = 0 [pid 1331] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1330] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1326] chdir("./file0" [pid 1325] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1324] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1330] <... futex resumed>) = 1 [pid 1328] <... futex resumed>) = 0 [pid 1326] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1325] <... openat resumed>) = 7 [pid 1332] <... memfd_create resumed>) = 3 [pid 1330] creat("./bus", 000 [pid 1328] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1326] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1325] ioctl(7, LOOP_SET_FD, 6 [pid 1332] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1331] <... write resumed>) = 262144 [pid 1330] <... creat resumed>) = 3 [pid 1328] <... futex resumed>) = 0 [pid 1326] <... futex resumed>) = 1 [pid 1324] <... futex resumed>) = 0 [pid 1332] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1331] munmap(0x7fe6f03b1000, 138412032 [pid 1330] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1328] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1326] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1325] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1324] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1332] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1331] <... munmap resumed>) = 0 [pid 1330] <... futex resumed>) = 0 [pid 1328] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1326] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1325] ioctl(7, LOOP_CLR_FD [pid 1324] <... futex resumed>) = 0 [pid 1331] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1330] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1328] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1326] creat("./bus", 000 [pid 1325] <... ioctl resumed>) = 0 [pid 1324] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1331] <... openat resumed>) = 4 [pid 1330] <... openat resumed>) = 4 [pid 1328] <... futex resumed>) = 0 [pid 1326] <... creat resumed>) = 3 [pid 1331] ioctl(4, LOOP_SET_FD, 3 [pid 1330] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1328] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1326] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1331] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1330] <... futex resumed>) = 0 [pid 1328] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1331] ioctl(4, LOOP_CLR_FD [pid 1330] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1328] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1326] <... futex resumed>) = 1 [pid 1324] <... futex resumed>) = 0 [pid 1331] <... ioctl resumed>) = 0 [pid 1330] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1328] <... futex resumed>) = 0 [pid 1326] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1324] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1332] <... write resumed>) = 262144 [pid 1330] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1328] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1326] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1324] <... futex resumed>) = 0 [pid 1330] <... futex resumed>) = 0 [pid 1328] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1326] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1325] ioctl(7, LOOP_SET_FD, 6 [pid 1324] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1330] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1328] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1330] <... open resumed>) = 5 [pid 1328] <... futex resumed>) = 0 [pid 1330] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1328] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1330] <... futex resumed>) = 0 [pid 1328] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1330] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1328] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1332] munmap(0x7fe6f03b1000, 138412032 [pid 1330] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1328] <... futex resumed>) = 0 [pid 1332] <... munmap resumed>) = 0 [pid 1330] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1328] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1332] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1330] <... mmap resumed>) = 0x20000000 [pid 1332] <... openat resumed>) = 4 [pid 1330] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1332] ioctl(4, LOOP_SET_FD, 3 [pid 1330] <... futex resumed>) = 1 [pid 1328] <... futex resumed>) = 0 [pid 1332] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1330] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1328] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1332] ioctl(4, LOOP_CLR_FD [pid 1330] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1328] <... futex resumed>) = 0 [pid 1332] <... ioctl resumed>) = 0 [pid 1330] memfd_create("syzkaller", 0 [pid 1328] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1330] <... memfd_create resumed>) = 6 [pid 1330] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1330] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1332] ioctl(4, LOOP_SET_FD, 3 [pid 1330] <... write resumed>) = 131072 [pid 1332] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1330] munmap(0x7fe6f03b1000, 138412032 [pid 1332] close(4 [pid 1330] <... munmap resumed>) = 0 [pid 1326] <... openat resumed>) = 4 [pid 1325] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1332] <... close resumed>) = 0 [pid 1330] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1326] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1325] close(7 [pid 1332] close(3 [pid 1331] ioctl(4, LOOP_SET_FD, 3 [pid 1330] <... openat resumed>) = 7 [pid 1326] <... futex resumed>) = 1 [pid 1325] <... close resumed>) = 0 [pid 1324] <... futex resumed>) = 0 [pid 1332] <... close resumed>) = 0 [pid 1331] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1330] ioctl(7, LOOP_SET_FD, 6 [pid 1326] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1325] close(6 [pid 1324] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1332] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1331] close(4 [pid 1330] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1324] <... futex resumed>) = 0 [pid 1332] <... futex resumed>) = 1 [pid 1330] ioctl(7, LOOP_CLR_FD [pid 1329] <... futex resumed>) = 0 [pid 1324] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1332] chdir("./file0" [pid 1331] <... close resumed>) = 0 [pid 1330] <... ioctl resumed>) = 0 [pid 1329] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1326] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1325] <... close resumed>) = 0 [pid 1332] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1331] close(3 [pid 1329] <... futex resumed>) = 0 [pid 1326] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1325] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1332] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1329] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1332] <... futex resumed>) = 0 [pid 1329] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1332] creat("./bus", 000 [pid 1329] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1332] <... creat resumed>) = 3 [pid 1331] <... close resumed>) = 0 [pid 1329] <... futex resumed>) = 0 [pid 1326] <... futex resumed>) = 1 [pid 1325] <... futex resumed>) = 1 [pid 1324] <... futex resumed>) = 0 [pid 1322] <... futex resumed>) = 0 [pid 1332] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1331] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1329] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1326] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1325] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1324] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1322] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1332] <... futex resumed>) = 0 [pid 1331] <... futex resumed>) = 1 [pid 1330] ioctl(7, LOOP_SET_FD, 6 [pid 1329] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1327] <... futex resumed>) = 0 [pid 1326] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1325] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1324] <... futex resumed>) = 0 [pid 1322] <... futex resumed>) = 0 [pid 1332] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1331] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1330] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1329] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1327] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1326] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1325] mknod(0x20000000, 000 [pid 1324] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1322] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1332] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1331] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1330] close(7 [pid 1329] <... futex resumed>) = 0 [pid 1327] <... futex resumed>) = 0 [pid 1326] <... open resumed>) = 5 [pid 1325] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1332] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1331] chdir("./file0" [pid 1330] <... close resumed>) = 0 [pid 1329] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1327] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1326] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1332] <... openat resumed>) = 4 [pid 1331] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1330] close(6 [pid 1326] <... futex resumed>) = 1 [pid 1325] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1324] <... futex resumed>) = 0 [pid 1332] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1331] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1330] <... close resumed>) = 0 [pid 1326] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1325] <... futex resumed>) = 1 [pid 1324] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1322] <... futex resumed>) = 0 [pid 1332] <... futex resumed>) = 1 [pid 1331] <... futex resumed>) = 1 [pid 1330] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1329] <... futex resumed>) = 0 [pid 1327] <... futex resumed>) = 0 [pid 1326] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1325] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1324] <... futex resumed>) = 0 [pid 1322] exit_group(0 [pid 1332] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1330] <... futex resumed>) = 1 [pid 1329] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1328] <... futex resumed>) = 0 [pid 1324] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1322] <... exit_group resumed>) = ? [pid 1332] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1330] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1329] <... futex resumed>) = 0 [pid 1328] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1332] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1330] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1329] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1328] <... futex resumed>) = 0 [pid 1330] mknod(0x20000000, 000 [pid 1328] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1330] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1330] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1328] <... futex resumed>) = 0 [pid 1330] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1328] exit_group(0 [pid 1330] <... futex resumed>) = ? [pid 1328] <... exit_group resumed>) = ? [pid 1331] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1330] +++ exited with 0 +++ [pid 1328] +++ exited with 0 +++ [pid 1327] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1326] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1325] <... futex resumed>) = ? [pid 1331] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1327] <... futex resumed>) = 0 [pid 1332] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1331] creat("./bus", 000 [pid 1327] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1326] <... mmap resumed>) = 0x20000000 [pid 1325] +++ exited with 0 +++ [pid 1322] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1328, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 1332] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1331] <... creat resumed>) = 3 [pid 1326] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1322, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1332] <... futex resumed>) = 1 [pid 1331] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1329] <... futex resumed>) = 0 [pid 1326] <... futex resumed>) = 1 [pid 1324] <... futex resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1332] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1331] <... futex resumed>) = 1 [pid 1329] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1327] <... futex resumed>) = 0 [pid 1326] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1324] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1332] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1331] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1329] <... futex resumed>) = 0 [pid 1327] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1326] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1324] <... futex resumed>) = 0 [pid 1332] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1331] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1329] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1327] <... futex resumed>) = 0 [pid 1326] memfd_create("syzkaller", 0 [pid 1324] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1332] <... open resumed>) = 5 [pid 1331] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1327] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1326] <... memfd_create resumed>) = 6 [pid 305] <... openat resumed>) = 3 [pid 1332] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1331] <... openat resumed>) = 4 [pid 1326] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 1332] <... futex resumed>) = 1 [pid 1331] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1329] <... futex resumed>) = 0 [pid 1326] <... mmap resumed>) = 0x7fe6f03b1000 [pid 305] <... ioctl resumed>) = 0 [pid 1332] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1331] <... futex resumed>) = 1 [pid 1329] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1327] <... futex resumed>) = 0 [pid 1326] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 305] close(3 [pid 303] <... restart_syscall resumed>) = 0 [pid 1332] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1331] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1329] <... futex resumed>) = 0 [pid 1327] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1326] <... write resumed>) = 131072 [pid 305] <... close resumed>) = 0 [pid 1332] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1331] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1329] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1327] <... futex resumed>) = 0 [pid 1326] munmap(0x7fe6f03b1000, 138412032 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1332] <... mmap resumed>) = 0x20000000 [pid 1331] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1327] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1326] <... munmap resumed>) = 0 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1332] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1331] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1326] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1333 [pid 303] <... openat resumed>) = 3 ./strace-static-x86_64: Process 1333 attached [pid 1332] <... futex resumed>) = 1 [pid 1331] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1329] <... futex resumed>) = 0 [pid 1326] <... openat resumed>) = 7 [pid 303] ioctl(3, LOOP_CLR_FD [pid 1333] set_robust_list(0x5555636e06a0, 24 [pid 1332] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1331] <... futex resumed>) = 1 [pid 1329] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1327] <... futex resumed>) = 0 [pid 1326] ioctl(7, LOOP_SET_FD, 6 [pid 1333] <... set_robust_list resumed>) = 0 [pid 1332] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1331] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1329] <... futex resumed>) = 0 [pid 1327] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1326] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 303] <... ioctl resumed>) = 0 [pid 1333] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1332] memfd_create("syzkaller", 0 [pid 1331] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1329] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1327] <... futex resumed>) = 0 [pid 1326] ioctl(7, LOOP_CLR_FD [pid 303] close(3 [pid 1333] <... prctl resumed>) = 0 [pid 1332] <... memfd_create resumed>) = 6 [pid 1331] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1327] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1326] <... ioctl resumed>) = 0 [pid 1333] setpgid(0, 0 [pid 1332] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1333] <... setpgid resumed>) = 0 [pid 1332] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1333] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1332] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1333] <... openat resumed>) = 3 [pid 1332] <... write resumed>) = 131072 [pid 1331] <... open resumed>) = 5 [pid 303] <... close resumed>) = 0 [pid 1333] write(3, "1000", 4 [pid 1332] munmap(0x7fe6f03b1000, 138412032 [pid 1331] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1333] <... write resumed>) = 4 [pid 1332] <... munmap resumed>) = 0 [pid 1331] <... futex resumed>) = 1 [pid 1327] <... futex resumed>) = 0 [pid 1333] close(3 [pid 1332] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1333] <... close resumed>) = 0 [pid 1332] <... openat resumed>) = 7 [pid 1331] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1327] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1333] write(1, "executing program\n", 18 [pid 1332] ioctl(7, LOOP_SET_FD, 6executing program [pid 1333] <... write resumed>) = 18 [pid 1332] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1331] <... mmap resumed>) = 0x20000000 [pid 1327] <... futex resumed>) = 0 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1334 [pid 1333] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1332] ioctl(7, LOOP_CLR_FD [pid 1331] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1333] <... futex resumed>) = 0 [pid 1332] <... ioctl resumed>) = 0 [pid 1331] <... futex resumed>) = 0 [pid 1327] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1326] ioctl(7, LOOP_SET_FD, 6 [pid 1333] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1331] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1327] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1326] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1333] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1327] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1333] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1326] close(7 [pid 1327] <... futex resumed>) = 1 [pid 1333] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1331] <... futex resumed>) = 0 [pid 1326] <... close resumed>) = 0 [pid 1333] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1327] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1333] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1331] memfd_create("syzkaller", 0 [pid 1326] close(6 [pid 1333] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1331] <... memfd_create resumed>) = 6 [pid 1333] <... mprotect resumed>) = 0 [pid 1332] ioctl(7, LOOP_SET_FD, 6 [pid 1331] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1326] <... close resumed>) = 0 [pid 1333] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1332] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1331] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1326] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1333] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1332] close(7./strace-static-x86_64: Process 1334 attached [pid 1333] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1332] <... close resumed>) = 0 [pid 1334] set_robust_list(0x5555636e06a0, 24 [pid 1332] close(6 [pid 1334] <... set_robust_list resumed>) = 0 [pid 1333] <... clone3 resumed> => {parent_tid=[1335]}, 88) = 1335 [pid 1332] <... close resumed>) = 0 [pid 1334] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1333] rt_sigprocmask(SIG_SETMASK, [], [pid 1332] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1331] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1326] <... futex resumed>) = 1 [pid 1324] <... futex resumed>) = 0 [pid 1334] <... prctl resumed>) = 0 [pid 1333] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1332] <... futex resumed>) = 1 [pid 1329] <... futex resumed>) = 0 [pid 1334] setpgid(0, 0 [pid 1333] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1332] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1329] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1334] <... setpgid resumed>) = 0 [pid 1333] <... futex resumed>) = 0 [pid 1332] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1329] <... futex resumed>) = 0 [pid 1334] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1333] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1332] mknod(0x20000000, 000 [pid 1331] <... write resumed>) = 131072 [pid 1329] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1326] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1324] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1334] <... openat resumed>) = 3 [pid 1332] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1331] munmap(0x7fe6f03b1000, 138412032 [pid 1326] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1324] <... futex resumed>) = 0 [pid 1334] write(3, "1000", 4 [pid 1332] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1334] <... write resumed>) = 4 [pid 1332] <... futex resumed>) = 1 [pid 1331] <... munmap resumed>) = 0 [pid 1329] <... futex resumed>) = 0 [pid 1326] mknod(0x20000000, 000 [pid 1324] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1334] close(3 [pid 1332] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1331] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1329] exit_group(0 [pid 1326] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1334] <... close resumed>) = 0 [pid 1332] <... futex resumed>) = ? [pid 1331] <... openat resumed>) = 7 [pid 1329] <... exit_group resumed>) = ? executing program [pid 1326] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1334] write(1, "executing program\n", 18 [pid 1332] +++ exited with 0 +++ [pid 1329] +++ exited with 0 +++ [pid 1334] <... write resumed>) = 18 [pid 1334] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1334] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, NULL, 8) = 0 [pid 1334] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 1334] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6f87b1000 [pid 1334] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 1334] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 1334] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} => {parent_tid=[1336]}, 88) = 1336 [pid 1334] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1334] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1335 attached ) = 0 [pid 1335] set_robust_list(0x7fe6f87d19a0, 24 [pid 1334] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1335] <... set_robust_list resumed>) = 0 [pid 1335] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1335] memfd_create("syzkaller", 0 [pid 1331] ioctl(7, LOOP_SET_FD, 6 [pid 1326] <... futex resumed>) = 1 [pid 1324] <... futex resumed>) = 0 [pid 1331] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1326] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1324] exit_group(0 [pid 1331] ioctl(7, LOOP_CLR_FD [pid 1324] <... exit_group resumed>) = ? [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1329, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1326] <... futex resumed>) = ? [pid 1331] <... ioctl resumed>) = 0 [pid 1335] <... memfd_create resumed>) = 3 [pid 1335] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1335] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1326] +++ exited with 0 +++ [pid 1324] +++ exited with 0 +++ [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1324, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] ioctl(3, LOOP_CLR_FD [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 306] <... ioctl resumed>) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1335] <... write resumed>) = 262144 [pid 1331] ioctl(7, LOOP_SET_FD, 6 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1337 [pid 1331] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1331] close(7) = 0 [pid 1331] close(6 [pid 1335] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1331] <... close resumed>) = 0 [pid 1331] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1327] <... futex resumed>) = 0 [pid 1331] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1327] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1331] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1331] mknod(0x20000000, 000 [pid 1327] <... futex resumed>) = 0 [pid 1331] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1327] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1331] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1327] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1331] <... futex resumed>) = 0 [pid 1331] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1327] exit_group(0 [pid 1331] <... futex resumed>) = ? [pid 1327] <... exit_group resumed>) = ? [pid 1331] +++ exited with 0 +++ [pid 1335] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 1335] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1335] ioctl(4, LOOP_CLR_FD [pid 1327] +++ exited with 0 +++ [pid 1335] <... ioctl resumed>) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1327, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 1336 attached [pid 1336] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1336] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1336] memfd_create("syzkaller", 0) = 3 [pid 1336] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1336] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1335] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1335] close(4) = 0 [pid 1335] close(3) = 0 [pid 1335] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1333] <... futex resumed>) = 0 [pid 1333] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1333] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1335] <... futex resumed>) = 1 [pid 1335] chdir("./file0") = -1 ENOTDIR (Not a directory) [pid 1335] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1333] <... futex resumed>) = 0 [pid 1335] <... futex resumed>) = 1 [pid 1333] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1335] creat("./bus", 000 [pid 1333] <... futex resumed>) = 0 [pid 1335] <... creat resumed>) = 3 [pid 1333] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] <... restart_syscall resumed>) = 0 [pid 1335] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1333] <... futex resumed>) = 0 [pid 1335] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1333] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1335] <... openat resumed>) = 4 [pid 1333] <... futex resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1335] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1333] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1335] <... futex resumed>) = 0 [pid 1333] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 302] <... openat resumed>) = 3 [pid 1335] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1333] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... restart_syscall resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 1337 attached [pid 1335] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1333] <... futex resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 1335] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1333] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1337] set_robust_list(0x5555636e06a0, 24 [pid 1335] <... futex resumed>) = 0 [pid 1333] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 302] close(3 [pid 1337] <... set_robust_list resumed>) = 0 [pid 1335] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1333] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1337] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1336] <... write resumed>) = 262144 [pid 1335] <... open resumed>) = 5 [pid 1333] <... futex resumed>) = 0 [pid 302] <... close resumed>) = 0 [pid 1337] <... prctl resumed>) = 0 [pid 1335] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1333] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... openat resumed>) = 3 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1335] <... futex resumed>) = 0 [pid 1333] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 304] ioctl(3, LOOP_CLR_FD [pid 1335] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1333] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1337] setpgid(0, 0 [pid 1335] <... mmap resumed>) = 0x20000000 [pid 1333] <... futex resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 1337] <... setpgid resumed>) = 0 [pid 1335] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1333] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] close(3 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1338 [pid 1337] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1335] <... futex resumed>) = 0 [pid 1333] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 304] <... close resumed>) = 0 [pid 1337] <... openat resumed>) = 3 [pid 1336] munmap(0x7fe6f03b1000, 138412032 [pid 1335] memfd_create("syzkaller", 0 [pid 1333] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1337] write(3, "1000", 4 [pid 1336] <... munmap resumed>) = 0 [pid 1335] <... memfd_create resumed>) = 6 [pid 1333] <... futex resumed>) = 0 [pid 1336] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1335] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1333] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1337] <... write resumed>) = 4 [pid 1336] <... openat resumed>) = 4 [pid 1335] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1337] close(3 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1339 [pid 1337] <... close resumed>) = 0 executing program [pid 1337] write(1, "executing program\n", 18 [pid 1336] ioctl(4, LOOP_SET_FD, 3 [pid 1335] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1337] <... write resumed>) = 18 ./strace-static-x86_64: Process 1338 attached [pid 1337] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1336] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1335] <... write resumed>) = 131072 [pid 1337] <... futex resumed>) = 0 [pid 1338] set_robust_list(0x5555636e06a0, 24 [pid 1337] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, ./strace-static-x86_64: Process 1339 attached [pid 1338] <... set_robust_list resumed>) = 0 [pid 1337] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1336] ioctl(4, LOOP_CLR_FD [pid 1335] munmap(0x7fe6f03b1000, 138412032 [pid 1337] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1339] set_robust_list(0x5555636e06a0, 24 [pid 1338] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1337] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1336] <... ioctl resumed>) = 0 [pid 1335] <... munmap resumed>) = 0 [pid 1337] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1339] <... set_robust_list resumed>) = 0 [pid 1338] <... prctl resumed>) = 0 [pid 1337] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1335] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1338] setpgid(0, 0 [pid 1337] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1339] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1338] <... setpgid resumed>) = 0 [pid 1337] <... mprotect resumed>) = 0 [pid 1335] <... openat resumed>) = 7 [pid 1337] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1335] ioctl(7, LOOP_SET_FD, 6 [pid 1338] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1339] <... prctl resumed>) = 0 [pid 1337] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1338] <... openat resumed>) = 3 [pid 1337] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1335] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1339] setpgid(0, 0) = 0 [pid 1338] write(3, "1000", 4 [pid 1335] ioctl(7, LOOP_CLR_FD [pid 1338] <... write resumed>) = 4 [pid 1337] <... clone3 resumed> => {parent_tid=[1340]}, 88) = 1340 [pid 1339] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1338] close(3 [pid 1337] rt_sigprocmask(SIG_SETMASK, [], [pid 1335] <... ioctl resumed>) = 0 [pid 1338] <... close resumed>) = 0 [pid 1337] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1339] <... openat resumed>) = 3 [pid 1338] write(1, "executing program\n", 18 [pid 1337] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1336] ioctl(4, LOOP_SET_FD, 3executing program [pid 1339] write(3, "1000", 4 [pid 1338] <... write resumed>) = 18 [pid 1337] <... futex resumed>) = 0 [pid 1336] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1339] <... write resumed>) = 4 [pid 1338] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1337] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1336] close(4 [pid 1339] close(3 [pid 1338] <... futex resumed>) = 0 [pid 1336] <... close resumed>) = 0 [pid 1339] <... close resumed>) = 0 [pid 1338] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1336] close(3) = 0 [pid 1336] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1335] ioctl(7, LOOP_SET_FD, 6 [pid 1336] <... futex resumed>) = 1 [pid 1335] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1334] <... futex resumed>) = 0 [pid 1336] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1335] close(7 [pid 1334] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1336] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1335] <... close resumed>) = 0 [pid 1334] <... futex resumed>) = 0 [pid 1336] chdir("./file0" [pid 1335] close(6 [pid 1334] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1336] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1335] <... close resumed>) = 0 [pid 1336] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1335] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1336] <... futex resumed>) = 1 [pid 1335] <... futex resumed>) = 1 [pid 1334] <... futex resumed>) = 0 [pid 1333] <... futex resumed>) = 0 [pid 1336] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1335] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1334] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1333] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1336] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1335] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1334] <... futex resumed>) = 0 [pid 1333] <... futex resumed>) = 0 [pid 1336] creat("./bus", 000 [pid 1335] mknod(0x20000000, 000 [pid 1334] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}executing program [pid 1333] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1339] write(1, "executing program\n", 18 [pid 1338] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1336] <... creat resumed>) = 3 [pid 1335] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1339] <... write resumed>) = 18 [pid 1338] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1336] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1335] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1339] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1338] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1336] <... futex resumed>) = 1 [pid 1335] <... futex resumed>) = 1 [pid 1334] <... futex resumed>) = 0 [pid 1333] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1340 attached [pid 1339] <... futex resumed>) = 0 [pid 1338] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1336] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1335] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1334] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1333] exit_group(0 [pid 1340] set_robust_list(0x7fe6f87d19a0, 24 [pid 1339] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1338] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1336] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1335] <... futex resumed>) = ? [pid 1334] <... futex resumed>) = 0 [pid 1333] <... exit_group resumed>) = ? [pid 1340] <... set_robust_list resumed>) = 0 [pid 1339] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1338] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1336] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1335] +++ exited with 0 +++ [pid 1334] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1333] +++ exited with 0 +++ [pid 1340] rt_sigprocmask(SIG_SETMASK, [], [pid 1339] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1338] <... mprotect resumed>) = 0 [pid 1336] <... openat resumed>) = 4 [pid 1340] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1339] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1338] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1336] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1333, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1340] memfd_create("syzkaller", 0 [pid 1339] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1338] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1336] <... futex resumed>) = 1 [pid 1334] <... futex resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1340] <... memfd_create resumed>) = 3 [pid 1339] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1338] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1336] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1334] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1340] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1339] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1336] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1334] <... futex resumed>) = 0 [pid 1340] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1339] <... mprotect resumed>) = 0 [pid 1338] <... clone3 resumed> => {parent_tid=[1341]}, 88) = 1341 [pid 1336] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1334] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1340] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1339] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1338] rt_sigprocmask(SIG_SETMASK, [], [pid 1336] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1340] <... write resumed>) = 262144 [pid 1339] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1338] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1336] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1339] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1338] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1336] <... futex resumed>) = 1 [pid 1334] <... futex resumed>) = 0 [pid 1338] <... futex resumed>) = 0 [pid 1336] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1334] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1339] <... clone3 resumed> => {parent_tid=[1342]}, 88) = 1342 [pid 1338] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1336] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1334] <... futex resumed>) = 0 [pid 1339] rt_sigprocmask(SIG_SETMASK, [], [pid 1336] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1334] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1339] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1336] <... open resumed>) = 5 [pid 1339] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1336] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1340] munmap(0x7fe6f03b1000, 138412032 [pid 1339] <... futex resumed>) = 0 [pid 1336] <... futex resumed>) = 1 [pid 1334] <... futex resumed>) = 0 [pid 1340] <... munmap resumed>) = 0 [pid 1339] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1336] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1334] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1340] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1336] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1334] <... futex resumed>) = 0 [pid 1340] <... openat resumed>) = 4 [pid 1336] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1334] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... restart_syscall resumed>) = 0 [pid 1340] ioctl(4, LOOP_SET_FD, 3 [pid 1336] <... mmap resumed>) = 0x20000000 [pid 1340] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1336] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1340] ioctl(4, LOOP_CLR_FD [pid 1336] <... futex resumed>) = 1 [pid 1334] <... futex resumed>) = 0 [pid 1340] <... ioctl resumed>) = 0 [pid 1336] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1334] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1336] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1334] <... futex resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1336] memfd_create("syzkaller", 0 [pid 1334] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1336] <... memfd_create resumed>) = 6 [pid 1336] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1336] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1340] ioctl(4, LOOP_SET_FD, 3 [pid 1336] <... write resumed>) = 131072 [pid 1340] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1336] munmap(0x7fe6f03b1000, 138412032 [pid 1340] close(4 [pid 1336] <... munmap resumed>) = 0 [pid 1340] <... close resumed>) = 0 [pid 1336] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1340] close(3 [pid 1336] <... openat resumed>) = 7 [pid 1340] <... close resumed>) = 0 [pid 1336] ioctl(7, LOOP_SET_FD, 6 [pid 305] <... openat resumed>) = 3 [pid 1340] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1336] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 1342 attached [pid 1340] <... futex resumed>) = 1 [pid 1337] <... futex resumed>) = 0 [pid 1336] ioctl(7, LOOP_CLR_FD [pid 305] <... ioctl resumed>) = 0 [pid 1342] set_robust_list(0x7fe6f87d19a0, 24 [pid 1340] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1337] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1336] <... ioctl resumed>) = 0 [pid 305] close(3 [pid 1342] <... set_robust_list resumed>) = 0 [pid 1340] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1337] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1341 attached [pid 1342] rt_sigprocmask(SIG_SETMASK, [], [pid 1340] chdir("./file0" [pid 1337] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... close resumed>) = 0 [pid 1342] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1341] set_robust_list(0x7fe6f87d19a0, 24 [pid 1340] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1341] <... set_robust_list resumed>) = 0 [pid 1340] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1341] rt_sigprocmask(SIG_SETMASK, [], [pid 1340] <... futex resumed>) = 1 [pid 1337] <... futex resumed>) = 0 [pid 1342] memfd_create("syzkaller", 0 [pid 1341] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1340] creat("./bus", 000 [pid 1337] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1341] memfd_create("syzkaller", 0 [pid 1340] <... creat resumed>) = 3 [pid 1337] <... futex resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1343 [pid 1342] <... memfd_create resumed>) = 3 [pid 1341] <... memfd_create resumed>) = 3 [pid 1340] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1337] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1336] ioctl(7, LOOP_SET_FD, 6 [pid 1342] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1341] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1340] <... futex resumed>) = 0 [pid 1337] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1336] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1341] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1340] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1337] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1336] close(7 [pid 1342] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1341] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1340] <... openat resumed>) = 4 [pid 1337] <... futex resumed>) = 0 [pid 1336] <... close resumed>) = 0 [pid 1340] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1337] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1336] close(6 [pid 1340] <... futex resumed>) = 0 [pid 1337] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1336] <... close resumed>) = 0 [pid 1340] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1337] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1336] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1340] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1337] <... futex resumed>) = 0 [pid 1336] <... futex resumed>) = 1 [pid 1334] <... futex resumed>) = 0 [pid 1342] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1341] <... write resumed>) = 262144 [pid 1340] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1337] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1336] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1334] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1340] <... futex resumed>) = 0 [pid 1337] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1336] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1334] <... futex resumed>) = 0 [pid 1340] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1337] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1336] mknod(0x20000000, 000 [pid 1334] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1342] <... write resumed>) = 262144 [pid 1340] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1337] <... futex resumed>) = 0 [pid 1336] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1340] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1337] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1336] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1340] <... open resumed>) = 5 [pid 1336] <... futex resumed>) = 1 [pid 1334] <... futex resumed>) = 0 [pid 1341] munmap(0x7fe6f03b1000, 138412032 [pid 1340] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1336] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1334] exit_group(0 [pid 1341] <... munmap resumed>) = 0 [pid 1340] <... futex resumed>) = 1 [pid 1337] <... futex resumed>) = 0 [pid 1336] <... futex resumed>) = ? [pid 1334] <... exit_group resumed>) = ? [pid 1341] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1340] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1337] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1336] +++ exited with 0 +++ [pid 1334] +++ exited with 0 +++ [pid 1341] <... openat resumed>) = 4 [pid 1340] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1337] <... futex resumed>) = 0 [pid 1341] ioctl(4, LOOP_SET_FD, 3 [pid 1340] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1337] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1341] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1340] <... mmap resumed>) = 0x20000000 [pid 1341] ioctl(4, LOOP_CLR_FD [pid 1340] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1341] <... ioctl resumed>) = 0 [pid 1340] <... futex resumed>) = 1 [pid 1337] <... futex resumed>) = 0 [pid 1340] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1337] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1340] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1337] <... futex resumed>) = 0 [pid 1340] memfd_create("syzkaller", 0 [pid 1337] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1340] <... memfd_create resumed>) = 6 [pid 1340] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1342] munmap(0x7fe6f03b1000, 138412032 [pid 1340] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072./strace-static-x86_64: Process 1343 attached [pid 1342] <... munmap resumed>) = 0 [pid 1341] ioctl(4, LOOP_SET_FD, 3 [pid 1340] <... write resumed>) = 131072 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1334, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1343] set_robust_list(0x5555636e06a0, 24 [pid 1342] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1341] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1340] munmap(0x7fe6f03b1000, 138412032 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1343] <... set_robust_list resumed>) = 0 [pid 1342] <... openat resumed>) = 4 [pid 1341] close(4 [pid 1340] <... munmap resumed>) = 0 [pid 1343] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1342] ioctl(4, LOOP_SET_FD, 3 [pid 1341] <... close resumed>) = 0 [pid 1340] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1343] <... prctl resumed>) = 0 [pid 1342] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1341] close(3 [pid 1340] <... openat resumed>) = 7 [pid 1343] setpgid(0, 0 [pid 1342] ioctl(4, LOOP_CLR_FD [pid 1341] <... close resumed>) = 0 [pid 1340] ioctl(7, LOOP_SET_FD, 6 [pid 1343] <... setpgid resumed>) = 0 [pid 1341] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1340] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1343] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1341] <... futex resumed>) = 1 [pid 1340] ioctl(7, LOOP_CLR_FD [pid 1343] <... openat resumed>) = 3 [pid 1341] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1340] <... ioctl resumed>) = 0 [pid 1343] write(3, "1000", 4) = 4 [pid 1343] close(3) = 0 executing program [pid 1343] write(1, "executing program\n", 18) = 18 [pid 1343] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1342] <... ioctl resumed>) = 0 [pid 1338] <... futex resumed>) = 0 [pid 303] <... restart_syscall resumed>) = 0 [pid 1338] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1343] <... futex resumed>) = 0 [pid 1341] <... futex resumed>) = 0 [pid 1338] <... futex resumed>) = 1 [pid 1338] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1343] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1341] chdir("./file0" [pid 1343] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1341] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1340] ioctl(7, LOOP_SET_FD, 6 [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1343] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1341] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1340] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1343] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1341] <... futex resumed>) = 1 [pid 1340] close(7 [pid 1338] <... futex resumed>) = 0 [pid 303] <... openat resumed>) = 3 [pid 1343] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1341] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1340] <... close resumed>) = 0 [pid 1338] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] ioctl(3, LOOP_CLR_FD [pid 1343] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1342] ioctl(4, LOOP_SET_FD, 3 [pid 1341] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1340] close(6 [pid 1338] <... futex resumed>) = 0 [pid 303] <... ioctl resumed>) = 0 [pid 1343] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1342] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1341] creat("./bus", 000 [pid 1340] <... close resumed>) = 0 [pid 1338] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] close(3 [pid 1343] <... mprotect resumed>) = 0 [pid 1342] close(4 [pid 1341] <... creat resumed>) = 3 [pid 1340] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1343] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1342] <... close resumed>) = 0 [pid 1341] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1340] <... futex resumed>) = 1 [pid 1338] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1337] <... futex resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 1343] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1342] close(3 [pid 1341] <... futex resumed>) = 0 [pid 1340] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1338] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1337] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1343] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1341] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1340] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1337] <... futex resumed>) = 0 [pid 1342] <... close resumed>) = 0 [pid 1341] <... openat resumed>) = 4 [pid 1340] mknod(0x20000000, 000 [pid 1338] <... futex resumed>) = 0 [pid 1337] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1343] <... clone3 resumed> => {parent_tid=[1344]}, 88) = 1344 [pid 1342] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1341] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1340] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1338] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1343] rt_sigprocmask(SIG_SETMASK, [], [pid 1342] <... futex resumed>) = 1 [pid 1341] <... futex resumed>) = 0 [pid 1340] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1339] <... futex resumed>) = 0 [pid 1338] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1345 [pid 1343] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1342] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1341] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1340] <... futex resumed>) = 1 [pid 1339] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1338] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1337] <... futex resumed>) = 0 [pid 1343] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1342] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1341] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1340] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1339] <... futex resumed>) = 0 [pid 1338] <... futex resumed>) = 0 [pid 1337] exit_group(0 [pid 1343] <... futex resumed>) = 0 [pid 1342] chdir("./file0" [pid 1341] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1340] <... futex resumed>) = ? [pid 1339] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1338] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1337] <... exit_group resumed>) = ? [pid 1343] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1342] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1341] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1340] +++ exited with 0 +++ [pid 1337] +++ exited with 0 +++ [pid 1342] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1341] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1337, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1342] <... futex resumed>) = 1 [pid 1341] <... futex resumed>) = 1 [pid 1339] <... futex resumed>) = 0 [pid 1338] <... futex resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 1345 attached [pid 1342] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1341] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1339] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1338] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1345] set_robust_list(0x5555636e06a0, 24 [pid 1342] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1341] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1339] <... futex resumed>) = 0 [pid 1338] <... futex resumed>) = 0 [pid 1345] <... set_robust_list resumed>) = 0 [pid 1342] creat("./bus", 000 [pid 1341] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1339] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1338] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1345] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1342] <... creat resumed>) = 3 [pid 1341] <... open resumed>) = 5 [pid 1345] <... prctl resumed>) = 0 [pid 1342] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1341] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1345] setpgid(0, 0 [pid 1342] <... futex resumed>) = 1 [pid 1341] <... futex resumed>) = 1 [pid 1339] <... futex resumed>) = 0 [pid 1338] <... futex resumed>) = 0 [pid 1345] <... setpgid resumed>) = 0 [pid 1342] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1341] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1339] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1338] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1345] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1342] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1341] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1339] <... futex resumed>) = 0 [pid 1338] <... futex resumed>) = 0 [pid 1345] <... openat resumed>) = 3 [pid 1342] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1341] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1339] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1338] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1345] write(3, "1000", 4 [pid 1342] <... openat resumed>) = 4 [pid 1341] <... mmap resumed>) = 0x20000000 [pid 1345] <... write resumed>) = 4 [pid 1342] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1341] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1344 attached [pid 1345] close(3 [pid 1342] <... futex resumed>) = 1 [pid 1341] <... futex resumed>) = 1 executing program [pid 1339] <... futex resumed>) = 0 [pid 1338] <... futex resumed>) = 0 [pid 1345] <... close resumed>) = 0 [pid 1344] set_robust_list(0x7fe6f87d19a0, 24 [pid 1342] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1341] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1339] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1338] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... restart_syscall resumed>) = 0 [pid 1345] write(1, "executing program\n", 18 [pid 1344] <... set_robust_list resumed>) = 0 [pid 1342] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1341] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1339] <... futex resumed>) = 0 [pid 1338] <... futex resumed>) = 0 [pid 1345] <... write resumed>) = 18 [pid 1344] rt_sigprocmask(SIG_SETMASK, [], [pid 1342] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1341] memfd_create("syzkaller", 0 [pid 1338] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1344] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1341] <... memfd_create resumed>) = 6 [pid 1344] memfd_create("syzkaller", 0 [pid 1341] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1344] <... memfd_create resumed>) = 3 [pid 1341] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1344] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1341] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1344] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1341] <... write resumed>) = 131072 [pid 1345] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1344] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1342] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1341] munmap(0x7fe6f03b1000, 138412032 [pid 1339] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1345] <... futex resumed>) = 0 [pid 1342] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1341] <... munmap resumed>) = 0 [pid 1339] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1345] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1342] <... futex resumed>) = 0 [pid 1341] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1339] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1345] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1342] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1341] <... openat resumed>) = 7 [pid 1339] <... futex resumed>) = 0 [pid 1345] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1342] <... open resumed>) = 5 [pid 1341] ioctl(7, LOOP_SET_FD, 6 [pid 1339] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... openat resumed>) = 3 [pid 1345] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1342] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1341] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1339] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 306] ioctl(3, LOOP_CLR_FD [pid 1345] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1344] <... write resumed>) = 262144 [pid 1342] <... futex resumed>) = 0 [pid 1341] ioctl(7, LOOP_CLR_FD) = 0 [pid 1344] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1344] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 1344] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1344] ioctl(4, LOOP_CLR_FD) = 0 [pid 1341] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1341] close(7) = 0 [pid 1341] close(6 [pid 1345] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1342] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1341] <... close resumed>) = 0 [pid 1339] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... ioctl resumed>) = 0 [pid 1341] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1342] <... mmap resumed>) = 0x20000000 [pid 1341] <... futex resumed>) = 1 [pid 1339] <... futex resumed>) = 0 [pid 1338] <... futex resumed>) = 0 [pid 306] close(3 [pid 1345] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1342] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1341] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1339] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1338] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... close resumed>) = 0 [pid 1345] <... mprotect resumed>) = 0 [pid 1342] <... futex resumed>) = 0 [pid 1341] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1339] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1338] <... futex resumed>) = 0 [pid 1345] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1342] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1341] mknod(0x20000000, 000 [pid 1339] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1338] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1345] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1342] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1341] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1339] <... futex resumed>) = 0 [pid 1344] ioctl(4, LOOP_SET_FD, 3 [pid 1341] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1344] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1341] <... futex resumed>) = 1 [pid 1339] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1338] <... futex resumed>) = 0 [pid 1345] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1344] close(4 [pid 1342] memfd_create("syzkaller", 0 [pid 1341] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1338] exit_group(0 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1346 [pid 1344] <... close resumed>) = 0 [pid 1342] <... memfd_create resumed>) = 6 [pid 1341] <... futex resumed>) = ? [pid 1338] <... exit_group resumed>) = ? [pid 1345] <... clone3 resumed> => {parent_tid=[1347]}, 88) = 1347 [pid 1344] close(3 [pid 1342] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1341] +++ exited with 0 +++ [pid 1338] +++ exited with 0 +++ [pid 1345] rt_sigprocmask(SIG_SETMASK, [], [pid 1342] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1345] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1338, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1344] <... close resumed>) = 0 [pid 1344] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1343] <... futex resumed>) = 0 [pid 1344] chdir("./file0" [pid 1343] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1345] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1344] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1343] <... futex resumed>) = 0 [pid 1342] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 1345] <... futex resumed>) = 0 [pid 1344] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1343] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1344] <... futex resumed>) = 0 [pid 1343] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1344] creat("./bus", 000 [pid 1343] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1345] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1344] <... creat resumed>) = 3 [pid 1343] <... futex resumed>) = 0 [pid 1342] <... write resumed>) = 131072 [pid 1344] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1343] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1342] munmap(0x7fe6f03b1000, 138412032 [pid 1344] <... futex resumed>) = 0 [pid 1343] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1344] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1343] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1346 attached [pid 1344] <... openat resumed>) = 4 [pid 1343] <... futex resumed>) = 0 [pid 1342] <... munmap resumed>) = 0 [pid 1346] set_robust_list(0x5555636e06a0, 24 [pid 1344] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1343] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1342] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1346] <... set_robust_list resumed>) = 0 [pid 1344] <... futex resumed>) = 0 [pid 1343] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1346] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1344] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1343] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1342] <... openat resumed>) = 7 [pid 1346] <... prctl resumed>) = 0 [pid 1344] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1343] <... futex resumed>) = 0 [pid 1342] ioctl(7, LOOP_SET_FD, 6 [pid 1346] setpgid(0, 0 [pid 1344] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1343] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1342] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1346] <... setpgid resumed>) = 0 [pid 1344] <... futex resumed>) = 0 [pid 1343] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1342] ioctl(7, LOOP_CLR_FD [pid 1346] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1344] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1343] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1342] <... ioctl resumed>) = 0 [pid 1346] <... openat resumed>) = 3 [pid 1344] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1343] <... futex resumed>) = 0 [pid 1346] write(3, "1000", 4 [pid 1344] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1343] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1346] <... write resumed>) = 4 [pid 1344] <... open resumed>) = 5 executing program [pid 1346] close(3 [pid 1344] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1346] <... close resumed>) = 0 [pid 1344] <... futex resumed>) = 1 [pid 1343] <... futex resumed>) = 0 [pid 1346] write(1, "executing program\n", 18 [pid 1344] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1343] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1346] <... write resumed>) = 18 [pid 1344] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1343] <... futex resumed>) = 0 [pid 1346] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1344] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1343] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1346] <... futex resumed>) = 0 [pid 1344] <... mmap resumed>) = 0x20000000 [pid 1346] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1344] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1342] ioctl(7, LOOP_SET_FD, 6 [pid 1346] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1344] <... futex resumed>) = 1 [pid 1343] <... futex resumed>) = 0 [pid 1342] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1346] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1344] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1343] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1342] close(7 [pid 1346] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1344] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1343] <... futex resumed>) = 0 [pid 1346] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1344] memfd_create("syzkaller", 0 [pid 1343] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1342] <... close resumed>) = 0 [pid 1346] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1344] <... memfd_create resumed>) = 6 [pid 1342] close(6 [pid 302] <... restart_syscall resumed>) = 0 [pid 1346] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1344] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1346] <... mprotect resumed>) = 0 [pid 1344] <... mmap resumed>) = 0x7fe6f03b1000 ./strace-static-x86_64: Process 1347 attached [pid 1346] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1344] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1342] <... close resumed>) = 0 [pid 1346] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1344] <... write resumed>) = 131072 [pid 1342] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1347] set_robust_list(0x7fe6f87d19a0, 24 [pid 1342] <... futex resumed>) = 1 [pid 1339] <... futex resumed>) = 0 [pid 1342] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1339] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1342] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1339] <... futex resumed>) = 0 [pid 1342] mknod(0x20000000, 000 [pid 302] <... openat resumed>) = 3 [pid 1339] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1342] <... mknod resumed>) = -1 EEXIST (File exists) [pid 302] ioctl(3, LOOP_CLR_FD [pid 1342] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... ioctl resumed>) = 0 [pid 1342] <... futex resumed>) = 1 [pid 1339] <... futex resumed>) = 0 [pid 302] close(3 [pid 1347] <... set_robust_list resumed>) = 0 [pid 1342] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1339] exit_group(0 [pid 302] <... close resumed>) = 0 [pid 1347] rt_sigprocmask(SIG_SETMASK, [], [pid 1342] <... futex resumed>) = ? [pid 1339] <... exit_group resumed>) = ? [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1342] +++ exited with 0 +++ [pid 1346] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1344] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1339] +++ exited with 0 +++ [pid 1346] <... clone3 resumed> => {parent_tid=[1348]}, 88) = 1348 [pid 1344] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1347] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1346] rt_sigprocmask(SIG_SETMASK, [], [pid 1344] <... openat resumed>) = 7 [pid 1346] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1344] ioctl(7, LOOP_SET_FD, 6 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1339, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1349 [pid 1347] memfd_create("syzkaller", 0 [pid 1346] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1344] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 1346] <... futex resumed>) = 0 [pid 1344] ioctl(7, LOOP_CLR_FD [pid 1347] <... memfd_create resumed>) = 3 [pid 1346] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1344] <... ioctl resumed>) = 0 [pid 1347] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 1348 attached [pid 1348] set_robust_list(0x7fe6f87d19a0, 24) = 0 [pid 1348] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1348] memfd_create("syzkaller", 0) = 3 [pid 1344] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1344] close(7) = 0 [pid 1344] close(6) = 0 [pid 1344] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1343] <... futex resumed>) = 0 [pid 1344] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1343] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1344] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1343] <... futex resumed>) = 0 [pid 1344] mknod(0x20000000, 000 [pid 1343] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1347] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1344] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1344] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1343] <... futex resumed>) = 0 [pid 1344] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1343] exit_group(0 [pid 1344] <... futex resumed>) = ? [pid 1343] <... exit_group resumed>) = ? [pid 1344] +++ exited with 0 +++ [pid 1343] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1343, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 1348] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1347] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1348] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 305] <... restart_syscall resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 1348] munmap(0x7fe6f03b1000, 138412032 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 305] <... openat resumed>) = 3 [pid 304] <... openat resumed>) = 3 [pid 305] ioctl(3, LOOP_CLR_FD [pid 304] ioctl(3, LOOP_CLR_FD [pid 305] <... ioctl resumed>) = 0 [pid 304] <... ioctl resumed>) = 0 [pid 305] close(3 [pid 304] close(3 [pid 305] <... close resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1348] <... munmap resumed>) = 0 [pid 1348] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 1348] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1350 [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1351 [pid 1348] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 1350 attached [pid 1350] set_robust_list(0x5555636e06a0, 24 [pid 1347] <... write resumed>) = 262144 [pid 1350] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 1351 attached [pid 1347] munmap(0x7fe6f03b1000, 138412032 [pid 1350] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1347] <... munmap resumed>) = 0 [pid 1348] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 1348] close(4) = 0 [pid 1347] openat(AT_FDCWD, "/dev/loop1", O_RDWR./strace-static-x86_64: Process 1349 attached [pid 1348] close(3) = 0 [pid 1347] <... openat resumed>) = 4 [pid 1349] set_robust_list(0x5555636e06a0, 24 [pid 1347] ioctl(4, LOOP_SET_FD, 3 [pid 1349] <... set_robust_list resumed>) = 0 [pid 1347] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1349] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1347] ioctl(4, LOOP_CLR_FD [pid 1349] <... prctl resumed>) = 0 [pid 1347] <... ioctl resumed>) = 0 [pid 1349] setpgid(0, 0) = 0 [pid 1348] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1346] <... futex resumed>) = 0 [pid 1349] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1346] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1346] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1349] <... openat resumed>) = 3 [pid 1348] <... futex resumed>) = 1 [pid 1348] chdir("./file0" [pid 1349] write(3, "1000", 4executing program ) = 4 [pid 1347] ioctl(4, LOOP_SET_FD, 3 [pid 1349] close(3 [pid 1347] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1349] <... close resumed>) = 0 [pid 1347] close(4 [pid 1349] write(1, "executing program\n", 18 [pid 1347] <... close resumed>) = 0 [pid 1349] <... write resumed>) = 18 [pid 1347] close(3 [pid 1349] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1348] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1348] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1346] <... futex resumed>) = 0 [pid 1346] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1346] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1349] <... futex resumed>) = 0 [pid 1347] <... close resumed>) = 0 [pid 1349] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1347] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1348] <... futex resumed>) = 1 [pid 1349] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1348] creat("./bus", 000 [pid 1349] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1347] <... futex resumed>) = 1 [pid 1345] <... futex resumed>) = 0 [pid 1349] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1347] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1345] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1349] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1347] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1345] <... futex resumed>) = 0 [pid 1349] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1347] chdir("./file0" [pid 1345] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1349] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1347] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1348] <... creat resumed>) = 3 [pid 1348] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1347] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1346] <... futex resumed>) = 0 [pid 1346] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1346] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1348] <... futex resumed>) = 1 [pid 1348] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 1348] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1346] <... futex resumed>) = 0 [pid 1346] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 1346] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1348] <... futex resumed>) = 1 [pid 1348] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1351] set_robust_list(0x5555636e06a0, 24) = 0 [pid 1349] <... mprotect resumed>) = 0 [pid 1347] <... futex resumed>) = 1 [pid 1345] <... futex resumed>) = 0 [pid 1347] creat("./bus", 000 [pid 1345] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1349] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1345] <... futex resumed>) = 0 [pid 1345] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1349] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1347] <... creat resumed>) = 3 [pid 1349] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1347] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1350] <... prctl resumed>) = 0 [pid 1351] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1350] setpgid(0, 0) = 0 [pid 1350] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1347] <... futex resumed>) = 1 [pid 1345] <... futex resumed>) = 0 [pid 1345] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1347] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1345] <... futex resumed>) = 0 [pid 1345] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1351] <... prctl resumed>) = 0 [pid 1349] <... clone3 resumed> => {parent_tid=[1352]}, 88) = 1352 [pid 1347] <... openat resumed>) = 4 [pid 1347] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1349] rt_sigprocmask(SIG_SETMASK, [], [pid 1351] setpgid(0, 0 [pid 1349] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1347] <... futex resumed>) = 1 [pid 1345] <... futex resumed>) = 0 [pid 1349] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1347] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1345] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1349] <... futex resumed>) = 0 [pid 1347] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1345] <... futex resumed>) = 0 [pid 1347] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1345] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1351] <... setpgid resumed>) = 0 [pid 1350] <... openat resumed>) = 3 [pid 1349] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1348] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1351] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1347] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1347] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1345] <... futex resumed>) = 0 [pid 1347] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1345] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1347] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1345] <... futex resumed>) = 0 [pid 1347] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1345] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1351] <... openat resumed>) = 3 [pid 1350] write(3, "1000", 4 [pid 1348] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1347] <... open resumed>) = 5 [pid 1347] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1351] write(3, "1000", 4 [pid 1350] <... write resumed>) = 4 [pid 1348] <... futex resumed>) = 1 [pid 1347] <... futex resumed>) = 1 [pid 1346] <... futex resumed>) = 0 [pid 1345] <... futex resumed>) = 0 [pid 1351] <... write resumed>) = 4 [pid 1350] close(3 [pid 1348] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1347] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1346] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1345] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1351] close(3 [pid 1350] <... close resumed>) = 0 [pid 1348] <... open resumed>) = 5 [pid 1347] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1346] <... futex resumed>) = 0 executing program [pid 1351] <... close resumed>) = 0 [pid 1350] write(1, "executing program\n", 18 [pid 1348] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1347] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1346] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}executing program [pid 1345] <... futex resumed>) = 0 [pid 1351] write(1, "executing program\n", 18 [pid 1350] <... write resumed>) = 18 [pid 1348] <... futex resumed>) = 0 [pid 1346] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1351] <... write resumed>) = 18 [pid 1350] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1348] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1347] <... mmap resumed>) = 0x20000000 [pid 1346] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1345] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1351] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1350] <... futex resumed>) = 0 [pid 1348] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1347] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1346] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1352 attached [pid 1351] <... futex resumed>) = 0 [pid 1350] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1348] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1347] <... futex resumed>) = 0 [pid 1346] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1345] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1351] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1350] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1348] <... mmap resumed>) = 0x20000000 [pid 1347] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1345] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1352] set_robust_list(0x7fe6f87d19a0, 24 [pid 1351] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1350] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1348] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1347] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1345] <... futex resumed>) = 0 [pid 1352] <... set_robust_list resumed>) = 0 [pid 1351] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1350] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1348] <... futex resumed>) = 1 [pid 1346] <... futex resumed>) = 0 [pid 1352] rt_sigprocmask(SIG_SETMASK, [], [pid 1351] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1350] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1348] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1347] memfd_create("syzkaller", 0 [pid 1346] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1345] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1352] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1351] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1350] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1348] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1347] <... memfd_create resumed>) = 6 [pid 1346] <... futex resumed>) = 0 [pid 1352] memfd_create("syzkaller", 0 [pid 1351] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1350] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1348] memfd_create("syzkaller", 0 [pid 1347] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1346] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1352] <... memfd_create resumed>) = 3 [pid 1351] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1350] <... mprotect resumed>) = 0 [pid 1348] <... memfd_create resumed>) = 6 [pid 1347] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1352] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1351] <... mprotect resumed>) = 0 [pid 1350] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1348] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1351] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1350] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1348] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1352] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1351] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1350] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1348] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1347] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1351] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1348] <... write resumed>) = 131072 [pid 1350] <... clone3 resumed> => {parent_tid=[1353]}, 88) = 1353 [pid 1348] munmap(0x7fe6f03b1000, 138412032 [pid 1351] <... clone3 resumed> => {parent_tid=[1354]}, 88) = 1354 [pid 1350] rt_sigprocmask(SIG_SETMASK, [], [pid 1348] <... munmap resumed>) = 0 [pid 1347] <... write resumed>) = 131072 [pid 1351] rt_sigprocmask(SIG_SETMASK, [], [pid 1350] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1348] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1347] munmap(0x7fe6f03b1000, 138412032 [pid 1351] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1350] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1348] <... openat resumed>) = 7 [pid 1352] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1351] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1350] <... futex resumed>) = 0 [pid 1348] ioctl(7, LOOP_SET_FD, 6 [pid 1347] <... munmap resumed>) = 0 [pid 1351] <... futex resumed>) = 0 [pid 1350] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1348] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1347] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1351] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1348] ioctl(7, LOOP_CLR_FD) = 0 [pid 1347] <... openat resumed>) = 7 [pid 1347] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1347] ioctl(7, LOOP_CLR_FD [pid 1352] <... write resumed>) = 262144 [pid 1347] <... ioctl resumed>) = 0 [pid 1352] munmap(0x7fe6f03b1000, 138412032./strace-static-x86_64: Process 1354 attached [pid 1354] set_robust_list(0x7fe6f87d19a0, 24 [pid 1352] <... munmap resumed>) = 0 [pid 1348] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1348] close(7) = 0 [pid 1348] close(6) = 0 [pid 1348] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1346] <... futex resumed>) = 0 [pid 1348] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1346] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1352] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1348] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1346] <... futex resumed>) = 0 [pid 1352] <... openat resumed>) = 4 [pid 1348] mknod(0x20000000, 000 [pid 1347] ioctl(7, LOOP_SET_FD, 6 [pid 1346] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1352] ioctl(4, LOOP_SET_FD, 3 [pid 1348] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1347] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1352] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1348] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1347] close(7 [pid 1352] ioctl(4, LOOP_CLR_FD [pid 1348] <... futex resumed>) = 1 [pid 1346] <... futex resumed>) = 0 [pid 1352] <... ioctl resumed>) = 0 [pid 1348] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1347] <... close resumed>) = 0 [pid 1346] exit_group(0 [pid 1348] <... futex resumed>) = ? [pid 1347] close(6 [pid 1346] <... exit_group resumed>) = ? [pid 1348] +++ exited with 0 +++ [pid 1347] <... close resumed>) = 0 [pid 1346] +++ exited with 0 +++ [pid 1347] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1346, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1347] <... futex resumed>) = 1 [pid 1345] <... futex resumed>) = 0 [pid 1347] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1345] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 1347] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1345] <... futex resumed>) = 0 [pid 1347] mknod(0x20000000, 000 [pid 1345] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1347] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1352] ioctl(4, LOOP_SET_FD, 3 [pid 1347] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1352] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1347] <... futex resumed>) = 1 [pid 1352] close(4 [pid 1345] <... futex resumed>) = 0 [pid 1347] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1345] exit_group(0 [pid 1352] <... close resumed>) = 0 [pid 1347] <... futex resumed>) = ? [pid 1352] close(3 [pid 1345] <... exit_group resumed>) = ? [pid 1347] +++ exited with 0 +++ ./strace-static-x86_64: Process 1353 attached [pid 1354] <... set_robust_list resumed>) = 0 [pid 1354] rt_sigprocmask(SIG_SETMASK, [], [pid 1353] set_robust_list(0x7fe6f87d19a0, 24 [pid 1354] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1353] <... set_robust_list resumed>) = 0 [pid 1354] memfd_create("syzkaller", 0 [pid 1353] rt_sigprocmask(SIG_SETMASK, [], [pid 1345] +++ exited with 0 +++ [pid 1354] <... memfd_create resumed>) = 3 [pid 1353] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1345, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1354] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1353] memfd_create("syzkaller", 0 [pid 1352] <... close resumed>) = 0 [pid 303] restart_syscall(<... resuming interrupted clone ...> [pid 1352] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1354] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1353] <... memfd_create resumed>) = 3 [pid 1352] <... futex resumed>) = 1 [pid 1349] <... futex resumed>) = 0 [pid 1354] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1353] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1352] chdir("./file0" [pid 1349] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1353] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1352] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1349] <... futex resumed>) = 0 [pid 1353] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1352] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1349] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... restart_syscall resumed>) = 0 [pid 1352] <... futex resumed>) = 0 [pid 1349] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1352] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1349] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1352] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1349] <... futex resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1352] creat("./bus", 000 [pid 1349] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... openat resumed>) = 3 [pid 1354] <... write resumed>) = 262144 [pid 1353] <... write resumed>) = 262144 [pid 1352] <... creat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 1352] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... ioctl resumed>) = 0 [pid 1352] <... futex resumed>) = 1 [pid 1349] <... futex resumed>) = 0 [pid 1352] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1349] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] close(3 [pid 1352] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1349] <... futex resumed>) = 0 [pid 1352] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1349] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] <... close resumed>) = 0 [pid 1354] munmap(0x7fe6f03b1000, 138412032 [pid 1352] <... openat resumed>) = 4 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1352] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1354] <... munmap resumed>) = 0 [pid 1354] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1352] <... futex resumed>) = 1 [pid 1349] <... futex resumed>) = 0 [pid 1352] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1349] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... clone resumed>, child_tidptr=0x5555636e0690) = 1355 [pid 1352] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1349] <... futex resumed>) = 0 [pid 1352] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 1349] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1354] <... openat resumed>) = 4 [pid 1353] munmap(0x7fe6f03b1000, 138412032 [pid 1352] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1354] ioctl(4, LOOP_SET_FD, 3 [pid 1353] <... munmap resumed>) = 0 [pid 1352] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... restart_syscall resumed>) = 0 [pid 1352] <... futex resumed>) = 1 [pid 1349] <... futex resumed>) = 0 [pid 1352] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1349] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1354] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1353] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1352] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1349] <... futex resumed>) = 0 [pid 1354] ioctl(4, LOOP_CLR_FD [pid 1353] <... openat resumed>) = 4 [pid 1352] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1349] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1352] <... open resumed>) = 5 [pid 1354] <... ioctl resumed>) = 0 [pid 1353] ioctl(4, LOOP_SET_FD, 3 [pid 1352] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... openat resumed>) = 3 [pid 1353] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1352] <... futex resumed>) = 1 [pid 1349] <... futex resumed>) = 0 [pid 303] ioctl(3, LOOP_CLR_FD [pid 1352] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1349] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... ioctl resumed>) = 0 [pid 1352] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1349] <... futex resumed>) = 0 [pid 303] close(3 [pid 1352] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1349] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... close resumed>) = 0 [pid 1353] ioctl(4, LOOP_CLR_FD [pid 1352] <... mmap resumed>) = 0x20000000 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1353] <... ioctl resumed>) = 0 [pid 1352] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 1355 attached ) = 1 [pid 1349] <... futex resumed>) = 0 [pid 1352] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1349] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... clone resumed>, child_tidptr=0x5555636e0690) = 1356 [pid 1352] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1349] <... futex resumed>) = 0 [pid 1352] memfd_create("syzkaller", 0 [pid 1349] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1354] ioctl(4, LOOP_SET_FD, 3 [pid 1352] <... memfd_create resumed>) = 6 [pid 1354] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1354] close(4 [pid 1352] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1354] <... close resumed>) = 0 [pid 1354] close(3 [pid 1353] ioctl(4, LOOP_SET_FD, 3 [pid 1354] <... close resumed>) = 0 [pid 1353] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1354] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1353] close(4 [pid 1354] <... futex resumed>) = 1 [pid 1353] <... close resumed>) = 0 [pid 1351] <... futex resumed>) = 0 [pid 1354] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1353] close(3 [pid 1351] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1354] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1353] <... close resumed>) = 0 [pid 1351] <... futex resumed>) = 0 [pid 1354] chdir("./file0" [pid 1353] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1351] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1354] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1353] <... futex resumed>) = 1 [pid 1352] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1350] <... futex resumed>) = 0 [pid 1354] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1353] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1350] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1354] <... futex resumed>) = 1 [pid 1353] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1351] <... futex resumed>) = 0 [pid 1350] <... futex resumed>) = 0 [pid 1355] set_robust_list(0x5555636e06a0, 24 [pid 1354] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1353] chdir("./file0" [pid 1352] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1351] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1350] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1355] <... set_robust_list resumed>) = 0 [pid 1354] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1353] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1351] <... futex resumed>) = 0 [pid 1355] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1354] creat("./bus", 000 [pid 1353] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1352] <... write resumed>) = 131072 [pid 1351] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1355] <... prctl resumed>) = 0 [pid 1354] <... creat resumed>) = 3 [pid 1353] <... futex resumed>) = 1 [pid 1352] munmap(0x7fe6f03b1000, 138412032 [pid 1350] <... futex resumed>) = 0 [pid 1355] setpgid(0, 0 [pid 1354] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1353] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1352] <... munmap resumed>) = 0 [pid 1350] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1355] <... setpgid resumed>) = 0 [pid 1354] <... futex resumed>) = 1 [pid 1353] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1352] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1351] <... futex resumed>) = 0 [pid 1350] <... futex resumed>) = 0 [pid 1355] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1354] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1353] creat("./bus", 000 [pid 1352] <... openat resumed>) = 7 [pid 1351] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1350] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1355] <... openat resumed>) = 3 [pid 1354] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1353] <... creat resumed>) = 3 [pid 1352] ioctl(7, LOOP_SET_FD, 6 [pid 1351] <... futex resumed>) = 0 [pid 1355] write(3, "1000", 4 [pid 1354] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1353] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1352] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1351] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1355] <... write resumed>) = 4 [pid 1354] <... openat resumed>) = 4 [pid 1353] <... futex resumed>) = 1 [pid 1352] ioctl(7, LOOP_CLR_FD [pid 1350] <... futex resumed>) = 0 ./strace-static-x86_64: Process 1356 attached [pid 1355] close(3 [pid 1354] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1353] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1352] <... ioctl resumed>) = 0 [pid 1350] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1355] <... close resumed>) = 0 [pid 1354] <... futex resumed>) = 1 executing program [pid 1353] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1351] <... futex resumed>) = 0 [pid 1350] <... futex resumed>) = 0 [pid 1356] set_robust_list(0x5555636e06a0, 24 [pid 1355] write(1, "executing program\n", 18 [pid 1354] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1353] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1351] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1350] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1355] <... write resumed>) = 18 [pid 1354] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1353] <... openat resumed>) = 4 [pid 1351] <... futex resumed>) = 0 [pid 1356] <... set_robust_list resumed>) = 0 [pid 1355] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1354] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 1353] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1351] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1356] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1355] <... futex resumed>) = 0 [pid 1354] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1353] <... futex resumed>) = 1 [pid 1350] <... futex resumed>) = 0 [pid 1356] <... prctl resumed>) = 0 [pid 1355] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1354] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1353] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1352] ioctl(7, LOOP_SET_FD, 6 [pid 1350] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1356] setpgid(0, 0 [pid 1355] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1354] <... futex resumed>) = 1 [pid 1353] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1352] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1351] <... futex resumed>) = 0 [pid 1350] <... futex resumed>) = 0 [pid 1356] <... setpgid resumed>) = 0 [pid 1355] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1354] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1353] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 1352] close(7 [pid 1351] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1350] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1356] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1355] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1354] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1353] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1352] <... close resumed>) = 0 [pid 1351] <... futex resumed>) = 0 [pid 1356] <... openat resumed>) = 3 [pid 1355] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1354] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1353] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1352] close(6 [pid 1351] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1356] write(3, "1000", 4 [pid 1355] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1354] <... open resumed>) = 5 [pid 1353] <... futex resumed>) = 1 [pid 1350] <... futex resumed>) = 0 [pid 1356] <... write resumed>) = 4 [pid 1355] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1354] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1353] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1352] <... close resumed>) = 0 [pid 1350] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1356] close(3 [pid 1355] <... mprotect resumed>) = 0 [pid 1354] <... futex resumed>) = 1 [pid 1353] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1352] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1351] <... futex resumed>) = 0 [pid 1350] <... futex resumed>) = 0 [pid 1356] <... close resumed>) = 0 [pid 1355] rt_sigprocmask(SIG_BLOCK, ~[], executing program [pid 1354] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1353] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1351] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1350] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1356] write(1, "executing program\n", 18 [pid 1355] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1354] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1353] <... open resumed>) = 5 [pid 1352] <... futex resumed>) = 1 [pid 1351] <... futex resumed>) = 0 [pid 1349] <... futex resumed>) = 0 [pid 1356] <... write resumed>) = 18 [pid 1355] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1354] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1353] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1351] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1356] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1354] <... mmap resumed>) = 0x20000000 [pid 1353] <... futex resumed>) = 1 [pid 1352] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1350] <... futex resumed>) = 0 [pid 1349] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1356] <... futex resumed>) = 0 [pid 1355] <... clone3 resumed> => {parent_tid=[1357]}, 88) = 1357 [pid 1354] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1353] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1352] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1350] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1356] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1355] rt_sigprocmask(SIG_SETMASK, [], [pid 1354] <... futex resumed>) = 1 [pid 1353] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1352] mknod(0x20000000, 000 [pid 1351] <... futex resumed>) = 0 [pid 1350] <... futex resumed>) = 0 [pid 1349] <... futex resumed>) = 0 [pid 1356] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1355] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1354] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1353] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1352] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1351] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1350] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1349] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1356] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1355] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1354] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1353] <... mmap resumed>) = 0x20000000 [pid 1352] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1351] <... futex resumed>) = 0 [pid 1349] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1356] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1355] <... futex resumed>) = 0 [pid 1354] memfd_create("syzkaller", 0 [pid 1353] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1352] <... futex resumed>) = 0 [pid 1351] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1349] exit_group(0./strace-static-x86_64: Process 1357 attached [pid 1356] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1355] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1354] <... memfd_create resumed>) = 6 [pid 1353] <... futex resumed>) = 1 [pid 1350] <... futex resumed>) = 0 [pid 1349] <... exit_group resumed>) = ? [pid 1357] set_robust_list(0x7fe6f87d19a0, 24 [pid 1356] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1354] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1353] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1350] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1357] <... set_robust_list resumed>) = 0 [pid 1356] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1354] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1353] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1350] <... futex resumed>) = 0 [pid 1357] rt_sigprocmask(SIG_SETMASK, [], [pid 1356] <... mprotect resumed>) = 0 [pid 1354] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1353] memfd_create("syzkaller", 0 [pid 1352] +++ exited with 0 +++ [pid 1350] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1349] +++ exited with 0 +++ [pid 1357] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1356] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1354] <... write resumed>) = 131072 [pid 1353] <... memfd_create resumed>) = 6 [pid 1354] munmap(0x7fe6f03b1000, 138412032 [pid 1353] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1354] <... munmap resumed>) = 0 [pid 1353] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1354] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1353] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1354] <... openat resumed>) = 7 [pid 1353] <... write resumed>) = 131072 [pid 1354] ioctl(7, LOOP_SET_FD, 6 [pid 1353] munmap(0x7fe6f03b1000, 138412032 [pid 1354] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1353] <... munmap resumed>) = 0 [pid 1354] ioctl(7, LOOP_CLR_FD [pid 1353] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1354] <... ioctl resumed>) = 0 [pid 1353] <... openat resumed>) = 7 [pid 1353] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1356] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1353] ioctl(7, LOOP_CLR_FD [pid 1357] memfd_create("syzkaller", 0 [pid 1356] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1353] <... ioctl resumed>) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1349, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 1357] <... memfd_create resumed>) = 3 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 1357] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1356] <... clone3 resumed> => {parent_tid=[1358]}, 88) = 1358 [pid 1357] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1356] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 1354] ioctl(7, LOOP_SET_FD, 6 [pid 1356] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1354] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1356] <... futex resumed>) = 0 [pid 1354] close(7 [pid 1356] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1354] <... close resumed>) = 0 [pid 1354] close(6) = 0 [pid 1354] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1353] ioctl(7, LOOP_SET_FD, 6 [pid 1354] <... futex resumed>) = 1 [pid 1353] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1351] <... futex resumed>) = 0 [pid 1354] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1353] close(7 [pid 1351] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1354] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1353] <... close resumed>) = 0 [pid 1351] <... futex resumed>) = 0 [pid 1354] mknod(0x20000000, 000 [pid 1353] close(6 [pid 1351] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] <... restart_syscall resumed>) = 0 [pid 1357] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1354] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1353] <... close resumed>) = 0 [pid 1354] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1353] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1354] <... futex resumed>) = 1 [pid 1353] <... futex resumed>) = 1 [pid 1351] <... futex resumed>) = 0 [pid 1350] <... futex resumed>) = 0 [pid 1354] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1353] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1351] exit_group(0 [pid 1350] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1354] <... futex resumed>) = ? [pid 1353] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1351] <... exit_group resumed>) = ? [pid 1350] <... futex resumed>) = 0 [pid 302] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 1357] <... write resumed>) = 262144 [pid 1354] +++ exited with 0 +++ [pid 1353] mknod(0x20000000, 000 [pid 1351] +++ exited with 0 +++ [pid 1350] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] <... openat resumed>) = 3 [pid 1353] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1357] munmap(0x7fe6f03b1000, 138412032 [pid 1353] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1351, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] ioctl(3, LOOP_CLR_FD [pid 1357] <... munmap resumed>) = 0 [pid 1353] <... futex resumed>) = 1 [pid 1350] <... futex resumed>) = 0 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 302] <... ioctl resumed>) = 0 [pid 1357] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1353] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1350] exit_group(0 [pid 1357] <... openat resumed>) = 4 [pid 1353] <... futex resumed>) = ? [pid 1350] <... exit_group resumed>) = ? [pid 302] close(3./strace-static-x86_64: Process 1358 attached [pid 1357] ioctl(4, LOOP_SET_FD, 3 [pid 1353] +++ exited with 0 +++ [pid 1350] +++ exited with 0 +++ [pid 302] <... close resumed>) = 0 [pid 1358] set_robust_list(0x7fe6f87d19a0, 24 [pid 1357] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1350, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1358] <... set_robust_list resumed>) = 0 [pid 1357] ioctl(4, LOOP_CLR_FD [pid 305] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 1359 attached [pid 1358] rt_sigprocmask(SIG_SETMASK, [], [pid 1357] <... ioctl resumed>) = 0 [pid 1359] set_robust_list(0x5555636e06a0, 24 [pid 1358] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 302] <... clone resumed>, child_tidptr=0x5555636e0690) = 1359 [pid 1359] <... set_robust_list resumed>) = 0 [pid 1358] memfd_create("syzkaller", 0 [pid 1359] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1358] <... memfd_create resumed>) = 3 [pid 1359] <... prctl resumed>) = 0 [pid 1358] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1359] setpgid(0, 0 [pid 1358] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1359] <... setpgid resumed>) = 0 [pid 1358] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 1359] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1358] <... write resumed>) = 262144 [pid 1357] ioctl(4, LOOP_SET_FD, 3 [pid 1359] <... openat resumed>) = 3 [pid 1358] munmap(0x7fe6f03b1000, 138412032 [pid 1357] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1359] write(3, "1000", 4 [pid 1358] <... munmap resumed>) = 0 [pid 1357] close(4 executing program [pid 1359] <... write resumed>) = 4 [pid 1358] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 1357] <... close resumed>) = 0 [pid 1359] close(3 [pid 1358] <... openat resumed>) = 4 [pid 1357] close(3 [pid 1359] <... close resumed>) = 0 [pid 1358] ioctl(4, LOOP_SET_FD, 3 [pid 1357] <... close resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 1359] write(1, "executing program\n", 18 [pid 1358] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1357] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1359] <... write resumed>) = 18 [pid 1358] ioctl(4, LOOP_CLR_FD [pid 1357] <... futex resumed>) = 1 [pid 1355] <... futex resumed>) = 0 [pid 1359] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1358] <... ioctl resumed>) = 0 [pid 1357] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1355] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 1359] <... futex resumed>) = 0 [pid 1357] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1355] <... futex resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 1359] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1357] chdir("./file0" [pid 1355] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] ioctl(3, LOOP_CLR_FD [pid 1359] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1357] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 305] <... ioctl resumed>) = 0 [pid 304] <... restart_syscall resumed>) = 0 [pid 1359] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1357] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] close(3 [pid 1359] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1357] <... futex resumed>) = 1 [pid 1355] <... futex resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 1359] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1357] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1355] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 304] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 1359] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1357] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1355] <... futex resumed>) = 0 [pid 304] <... openat resumed>) = 3 [pid 1359] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1358] ioctl(4, LOOP_SET_FD, 3 [pid 1357] creat("./bus", 000 [pid 1355] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... clone resumed>, child_tidptr=0x5555636e0690) = 1360 [pid 304] ioctl(3, LOOP_CLR_FD [pid 1359] <... mprotect resumed>) = 0 [pid 1358] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1357] <... creat resumed>) = 3 [pid 304] <... ioctl resumed>) = 0 [pid 1359] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1358] close(4 [pid 1357] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] close(3 [pid 1359] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1358] <... close resumed>) = 0 [pid 1357] <... futex resumed>) = 1 [pid 1355] <... futex resumed>) = 0 [pid 304] <... close resumed>) = 0 [pid 1359] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6f87d1990, parent_tid=0x7fe6f87d1990, exit_signal=0, stack=0x7fe6f87b1000, stack_size=0x20300, tls=0x7fe6f87d16c0} [pid 1358] close(3 [pid 1357] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1355] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 1358] <... close resumed>) = 0 [pid 1357] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1355] <... futex resumed>) = 0 [pid 1359] <... clone3 resumed> => {parent_tid=[1361]}, 88) = 1361 [pid 1358] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1357] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1355] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... clone resumed>, child_tidptr=0x5555636e0690) = 1362 [pid 1359] rt_sigprocmask(SIG_SETMASK, [], [pid 1358] <... futex resumed>) = 1 [pid 1357] <... openat resumed>) = 4 [pid 1356] <... futex resumed>) = 0 [pid 1359] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1358] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1357] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1356] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1359] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1358] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1357] <... futex resumed>) = 1 [pid 1356] <... futex resumed>) = 0 [pid 1355] <... futex resumed>) = 0 [pid 1359] <... futex resumed>) = 0 [pid 1358] chdir("./file0" [pid 1357] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1356] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1355] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1359] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1358] <... chdir resumed>) = -1 ENOTDIR (Not a directory) [pid 1357] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1355] <... futex resumed>) = 0 [pid 1358] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1357] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 1355] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1358] <... futex resumed>) = 1 [pid 1357] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1356] <... futex resumed>) = 0 [pid 1358] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1357] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1356] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1358] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1357] <... futex resumed>) = 1 [pid 1356] <... futex resumed>) = 0 [pid 1355] <... futex resumed>) = 0 [pid 1358] creat("./bus", 000 [pid 1357] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1356] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1355] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1358] <... creat resumed>) = 3 [pid 1357] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1355] <... futex resumed>) = 0 [pid 1358] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1357] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1355] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1358] <... futex resumed>) = 1 [pid 1357] <... open resumed>) = 5 [pid 1356] <... futex resumed>) = 0 [pid 1358] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1357] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1356] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1358] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1357] <... futex resumed>) = 1 [pid 1356] <... futex resumed>) = 0 [pid 1355] <... futex resumed>) = 0 [pid 1358] openat(AT_FDCWD, "hugetlb.2MB.usage_in_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 1357] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1356] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1358] <... openat resumed>) = 4 [pid 1355] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1358] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1357] <... futex resumed>) = 0 [pid 1356] <... futex resumed>) = 0 [pid 1355] <... futex resumed>) = 1 [pid 1358] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1357] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1356] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1355] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1358] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1356] <... futex resumed>) = 0 [pid 1358] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 1356] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1358] <... mount resumed>) = -1 ENOSPC (No space left on device) [pid 1357] <... mmap resumed>) = 0x20000000 [pid 1358] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1357] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1358] <... futex resumed>) = 1 [pid 1357] <... futex resumed>) = 1 [pid 1356] <... futex resumed>) = 0 [pid 1355] <... futex resumed>) = 0 [pid 1358] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1357] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1356] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1355] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1358] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1357] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1356] <... futex resumed>) = 0 [pid 1355] <... futex resumed>) = 0 [pid 1358] open("./bus", O_RDWR|O_SYNC|O_DIRECT [pid 1356] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1358] <... open resumed>) = 5 [pid 1357] memfd_create("syzkaller", 0 [pid 1355] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1358] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1357] <... memfd_create resumed>) = 6 [pid 1356] <... futex resumed>) = 0 [pid 1358] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1357] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 1356] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1358] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1357] <... mmap resumed>) = 0x7fe6f03b1000 [pid 1356] <... futex resumed>) = 0 [pid 1358] mmap(0x20000000, 8388608, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 5, 0 [pid 1356] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1358] <... mmap resumed>) = 0x20000000 [pid 1358] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 1356] <... futex resumed>) = 0 [pid 1358] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1356] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1358] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1356] <... futex resumed>) = 0 [pid 1358] memfd_create("syzkaller", 0 [pid 1356] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 1358] <... memfd_create resumed>) = 6 [pid 1358] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe6f03b1000 [pid 1358] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1357] write(6, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072 [pid 1358] <... write resumed>) = 131072 [pid 1358] munmap(0x7fe6f03b1000, 138412032) = 0 [pid 1358] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 7 [pid 1358] ioctl(7, LOOP_SET_FD, 6) = -1 EBUSY (Device or resource busy) [pid 1357] <... write resumed>) = 131072 [pid 1358] ioctl(7, LOOP_CLR_FD [pid 1357] munmap(0x7fe6f03b1000, 138412032 [pid 1358] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 1362 attached [pid 1362] set_robust_list(0x5555636e06a0, 24 [pid 1357] <... munmap resumed>) = 0 [pid 1362] <... set_robust_list resumed>) = 0 [pid 1357] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 1362] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1357] <... openat resumed>) = 7 ./strace-static-x86_64: Process 1360 attached [pid 1357] ioctl(7, LOOP_SET_FD, 6 [pid 1362] <... prctl resumed>) = 0 [pid 1357] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1362] setpgid(0, 0 [pid 1357] ioctl(7, LOOP_CLR_FD [pid 1362] <... setpgid resumed>) = 0 [pid 1357] <... ioctl resumed>) = 0 [pid 1362] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1360] set_robust_list(0x5555636e06a0, 24executing program [pid 1362] <... openat resumed>) = 3 [pid 1360] <... set_robust_list resumed>) = 0 [pid 1362] write(3, "1000", 4) = 4 [pid 1362] close(3 [pid 1358] ioctl(7, LOOP_SET_FD, 6 [pid 1362] <... close resumed>) = 0 [pid 1358] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1362] write(1, "executing program\n", 18 [pid 1358] close(7 [pid 1362] <... write resumed>) = 18 [pid 1358] <... close resumed>) = 0 [pid 1362] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1358] close(6 [pid 1362] <... futex resumed>) = 0 [pid 1358] <... close resumed>) = 0 [pid 1362] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6f883aca0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6f882c350}, [pid 1358] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1362] <... rt_sigaction resumed>NULL, 8) = 0 [pid 1360] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 1358] <... futex resumed>) = 1 [pid 1356] <... futex resumed>) = 0 [pid 1362] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 1360] <... prctl resumed>) = 0 [pid 1358] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1357] ioctl(7, LOOP_SET_FD, 6 [pid 1356] futex(0x7fe6f889e6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 1362] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 1360] setpgid(0, 0 [pid 1358] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 1357] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 1356] <... futex resumed>) = 0 [pid 1362] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 1360] <... setpgid resumed>) = 0 [pid 1358] mknod(0x20000000, 000 [pid 1357] close(7 [pid 1356] futex(0x7fe6f889e6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 1362] <... mmap resumed>) = 0x7fe6f87b1000 [pid 1360] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 1358] <... mknod resumed>) = -1 EEXIST (File exists) [pid 1357] <... close resumed>) = 0 [pid 1362] mprotect(0x7fe6f87b2000, 131072, PROT_READ|PROT_WRITE [pid 1358] futex(0x7fe6f889e6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 1357] close(6./strace-static-x86_64: Process 1361 attached [pid 1362] <... mprotect resumed>) = 0 [pid 1360] <... openat resumed>) = 3 [pid 1358] <... futex resumed>) = 1 [pid 1356] <... futex resumed>) = 0 [pid 1362] rt_sigprocmask(SIG_BLOCK, ~[], [pid 1358] futex(0x7fe6f889e6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 1356] exit_group(0 [pid 1362] <... rt_sigprocmask resumed>[], 8) = 0 [pid 1361] set_robust_list(0x7fe6f87d19a0, 24 [pid 1360] write(3, "1000", 4 [pid 1358] <... futex resumed>) = ? [pid 1357] <... close resumed>) = 0 [pid 1356] <... exit_group resumed>) = ?