./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>) =