./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2410832085 <...> Warning: Permanently added '10.128.0.42' (ECDSA) to the list of known hosts. execve("./syz-executor2410832085", ["./syz-executor2410832085"], 0x7ffcdb0fc080 /* 10 vars */) = 0 brk(NULL) = 0x55555614e000 brk(0x55555614ed40) = 0x55555614ed40 arch_prctl(ARCH_SET_FS, 0x55555614e400) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 set_tid_address(0x55555614e6d0) = 304 set_robust_list(0x55555614e6e0, 24) = 0 rt_sigaction(SIGRTMIN, {sa_handler=0x7f39f91c7900, sa_mask=[], sa_flags=SA_RESTORER|SA_SIGINFO, sa_restorer=0x7f39f91c6e50}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f39f91c79a0, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f39f91c6e50}, NULL, 8) = 0 rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2410832085", 4096) = 28 brk(0x55555616fd40) = 0x55555616fd40 brk(0x555556170000) = 0x555556170000 mprotect(0x7f39f9289000, 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 getpid() = 304 openat(AT_FDCWD, "/sys/kernel/debug/x86/nmi_longest_ns", O_WRONLY|O_CLOEXEC) = 3 write(3, "10000000000", 11) = 11 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/hung_task_check_interval_secs", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) fstat(1, {st_mode=S_IFIFO|0600, st_size=0, ...}) = 0 openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_kallsyms", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_harden", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/kptr_restrict", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/softlockup_all_cpu_backtrace", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3 write(3, "100", 3) = 3 close(3) = 0 openat(AT_FDCWD, "/proc/sys/vm/oom_dump_tasks", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/debug/exception-trace", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/printk", O_WRONLY|O_CLOEXEC) = 3 [ 26.273829][ T23] audit: type=1400 audit(1669654515.949:73): avc: denied { execmem } for pid=304 comm="syz-executor241" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 write(3, "7 4 1 3", 7) = 7 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/keys/gc_delay", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/vm/oom_kill_allocating_task", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/ctrl-alt-del", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/cad_pid", O_WRONLY|O_CLOEXEC) = 3 write(3, "304", 3) = 3 close(3) = 0 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7f39f91c1700, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f39f91c6e50}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f39f91c1700, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f39f91c6e50}, NULL, 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555614e6d0) = 305 ./strace-static-x86_64: Process 305 attached [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] set_robust_list(0x55555614e6e0, 24) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 304] <... clone resumed>, child_tidptr=0x55555614e6d0) = 306 ./strace-static-x86_64: Process 306 attached [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... openat resumed>) = 3 [pid 305] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 305] close(3) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 304] <... clone resumed>, child_tidptr=0x55555614e6d0) = 307 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555614e6d0) = 309 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... clone resumed>, child_tidptr=0x55555614e6d0) = 308 [pid 304] <... clone resumed>, child_tidptr=0x55555614e6d0) = 310 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555614e6d0) = 311 [pid 306] set_robust_list(0x55555614e6e0, 24) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555614e6d0) = 312 ./strace-static-x86_64: Process 309 attached [pid 309] set_robust_list(0x55555614e6e0, 24) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 309] close(3) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 311 attached [pid 311] set_robust_list(0x55555614e6e0, 24 [pid 309] <... clone resumed>, child_tidptr=0x55555614e6d0) = 313 [pid 311] <... set_robust_list resumed>) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 311] close(3) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555614e6d0) = 314 ./strace-static-x86_64: Process 312 attached [pid 312] set_robust_list(0x55555614e6e0, 24) = 0 [pid 312] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 312] setpgid(0, 0) = 0 [pid 312] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 312] write(3, "1000", 4) = 4 [pid 312] close(3) = 0 [pid 312] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 312] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f39f9196000 [pid 312] mprotect(0x7f39f9197000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 312] clone(child_stack=0x7f39f91b62f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[315], tls=0x7f39f91b6700, child_tidptr=0x7f39f91b69d0) = 315 [pid 312] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 312] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 313 attached [pid 313] set_robust_list(0x55555614e6e0, 24) = 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 [pid 313] close(3) = 0 [pid 313] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 313] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f39f9196000 [pid 313] mprotect(0x7f39f9197000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 313] clone(child_stack=0x7f39f91b62f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 314 attached [pid 314] set_robust_list(0x55555614e6e0, 24 [pid 313] <... clone resumed>, parent_tid=[316], tls=0x7f39f91b6700, child_tidptr=0x7f39f91b69d0) = 316 [pid 313] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 313] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 314] <... set_robust_list resumed>) = 0 [pid 314] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 314] setpgid(0, 0) = 0 [pid 314] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 314] write(3, "1000", 4./strace-static-x86_64: Process 307 attached ./strace-static-x86_64: Process 310 attached ./strace-static-x86_64: Process 308 attached [pid 310] set_robust_list(0x55555614e6e0, 24 [pid 307] set_robust_list(0x55555614e6e0, 24 [pid 310] <... set_robust_list resumed>) = 0 [pid 308] set_robust_list(0x55555614e6e0, 24 [pid 307] <... set_robust_list resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] <... set_robust_list resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 310] <... openat resumed>) = 3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 307] <... openat resumed>) = 3 [pid 310] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 308] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 307] ioctl(3, LOOP_CLR_FD [pid 310] close(3 [pid 308] <... prctl resumed>) = 0 [pid 307] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 310] <... close resumed>) = 0 [pid 308] setpgid(0, 0 [pid 307] close(3 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] <... setpgid resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 314] <... write resumed>) = 4 [pid 314] close(3 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 314] <... close resumed>) = 0 [pid 314] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... openat resumed>) = 3 [pid 310] <... clone resumed>, child_tidptr=0x55555614e6d0) = 317 [pid 307] <... clone resumed>, child_tidptr=0x55555614e6d0) = 318 [pid 308] write(3, "1000", 4) = 4 [pid 308] close(3) = 0 [pid 308] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 308] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f39f9196000 [pid 308] mprotect(0x7f39f9197000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 308] clone(child_stack=0x7f39f91b62f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[319], tls=0x7f39f91b6700, child_tidptr=0x7f39f91b69d0) = 319 [pid 308] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 308] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 314] <... futex resumed>) = 0 [pid 314] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f39f9196000 [pid 314] mprotect(0x7f39f9197000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 314] clone(child_stack=0x7f39f91b62f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[320], tls=0x7f39f91b6700, child_tidptr=0x7f39f91b69d0) = 320 [pid 314] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 26.317831][ T23] audit: type=1400 audit(1669654515.999:74): avc: denied { read write } for pid=305 comm="syz-executor241" name="loop0" dev="devtmpfs" ino=9277 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 26.342384][ T23] audit: type=1400 audit(1669654516.019:75): avc: denied { open } for pid=305 comm="syz-executor241" path="/dev/loop0" dev="devtmpfs" ino=9277 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 314] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 315 attached [pid 315] set_robust_list(0x7f39f91b69e0, 24) = 0 [pid 315] memfd_create("syzkaller", 0) = 3 [pid 315] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f39f0d96000 ./strace-static-x86_64: Process 317 attached [pid 317] set_robust_list(0x55555614e6e0, 24) = 0 [pid 317] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 317] setpgid(0, 0) = 0 [pid 317] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 317] write(3, "1000", 4) = 4 [pid 317] close(3) = 0 ./strace-static-x86_64: Process 318 attached [pid 317] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 318] set_robust_list(0x55555614e6e0, 24 [pid 317] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f39f9196000 [pid 317] mprotect(0x7f39f9197000, 131072, PROT_READ|PROT_WRITE [pid 318] <... set_robust_list resumed>) = 0 [pid 317] <... mprotect resumed>) = 0 [pid 318] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 317] clone(child_stack=0x7f39f91b62f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 316 attached [pid 316] set_robust_list(0x7f39f91b69e0, 24) = 0 [pid 318] <... prctl resumed>) = 0 [pid 316] memfd_create("syzkaller", 0 [pid 318] setpgid(0, 0) = 0 [pid 318] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 317] <... clone resumed>, parent_tid=[321], tls=0x7f39f91b6700, child_tidptr=0x7f39f91b69d0) = 321 [pid 318] <... openat resumed>) = 3 [pid 317] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 316] <... memfd_create resumed>) = 3 [pid 317] <... futex resumed>) = 0 [pid 317] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 316] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f39f0d96000 [pid 318] write(3, "1000", 4) = 4 [pid 318] close(3) = 0 [pid 318] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 318] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f39f9196000 [pid 318] mprotect(0x7f39f9197000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 318] clone(child_stack=0x7f39f91b62f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[322], tls=0x7f39f91b6700, child_tidptr=0x7f39f91b69d0) = 322 [pid 318] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 318] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 315] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576./strace-static-x86_64: Process 321 attached [pid 321] set_robust_list(0x7f39f91b69e0, 24) = 0 [pid 321] memfd_create("syzkaller", 0) = 3 [pid 321] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f39f0d96000 ./strace-static-x86_64: Process 322 attached [pid 322] set_robust_list(0x7f39f91b69e0, 24) = 0 [pid 322] memfd_create("syzkaller", 0) = 3 [pid 322] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f39f0d96000 ./strace-static-x86_64: Process 319 attached [pid 319] set_robust_list(0x7f39f91b69e0, 24) = 0 [pid 319] memfd_create("syzkaller", 0./strace-static-x86_64: Process 320 attached ) = 3 [pid 320] set_robust_list(0x7f39f91b69e0, 24 [pid 319] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 320] <... set_robust_list resumed>) = 0 [pid 319] <... mmap resumed>) = 0x7f39f0d96000 [pid 320] memfd_create("syzkaller", 0) = 3 [pid 320] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f39f0d96000 [pid 315] <... write resumed>) = 1048576 [pid 316] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 319] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 322] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 320] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 316] <... write resumed>) = 1048576 [pid 315] munmap(0x7f39f0d96000, 1048576) = 0 [pid 315] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 315] ioctl(4, LOOP_SET_FD, 3 [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"..., 1048576 [pid 315] <... ioctl resumed>) = 0 [pid 315] close(3) = 0 [pid 315] mkdir("./bus", 0777 [pid 316] munmap(0x7f39f0d96000, 1048576) = 0 [pid 319] <... write resumed>) = 1048576 [pid 319] munmap(0x7f39f0d96000, 1048576 [pid 321] <... write resumed>) = 1048576 [pid 320] <... write resumed>) = 1048576 [pid 316] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 320] munmap(0x7f39f0d96000, 1048576 [pid 319] <... munmap resumed>) = 0 [pid 316] ioctl(4, LOOP_SET_FD, 3 [pid 319] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 320] <... munmap resumed>) = 0 [pid 320] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 316] <... ioctl resumed>) = 0 [pid 319] <... openat resumed>) = 4 [pid 316] close(3) = 0 [pid 316] mkdir("./bus", 0777 [pid 321] munmap(0x7f39f0d96000, 1048576 [pid 319] ioctl(4, LOOP_SET_FD, 3 [pid 320] <... openat resumed>) = 4 [pid 321] <... munmap resumed>) = 0 [pid 320] ioctl(4, LOOP_SET_FD, 3 [pid 321] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 322] <... write resumed>) = 1048576 [pid 322] munmap(0x7f39f0d96000, 1048576) = 0 [pid 322] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 319] <... ioctl resumed>) = 0 [pid 319] close(3) = 0 [pid 319] mkdir("./bus", 0777 [pid 320] <... ioctl resumed>) = 0 [ 26.386460][ T23] audit: type=1400 audit(1669654516.039:76): avc: denied { ioctl } for pid=305 comm="syz-executor241" path="/dev/loop0" dev="devtmpfs" ino=9277 ioctlcmd=0x4c01 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 322] <... openat resumed>) = 4 [pid 321] <... openat resumed>) = 4 [pid 320] close(3 [pid 319] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 316] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 315] <... mkdir resumed>) = 0 [pid 320] <... close resumed>) = 0 [pid 319] mount("/dev/loop0", "./bus", "ext4", MS_DIRSYNC|MS_NOATIME|MS_LAZYTIME, ",errors=continue" [pid 320] mkdir("./bus", 0777 [pid 322] ioctl(4, LOOP_SET_FD, 3 [pid 321] ioctl(4, LOOP_SET_FD, 3 [pid 316] mount("/dev/loop3", "./bus", "ext4", MS_DIRSYNC|MS_NOATIME|MS_LAZYTIME, ",errors=continue" [pid 315] mount("/dev/loop1", "./bus", "ext4", MS_DIRSYNC|MS_NOATIME|MS_LAZYTIME, ",errors=continue" [pid 320] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 320] mount("/dev/loop5", "./bus", "ext4", MS_DIRSYNC|MS_NOATIME|MS_LAZYTIME, ",errors=continue" [pid 322] <... ioctl resumed>) = 0 [pid 322] close(3 [pid 321] <... ioctl resumed>) = 0 [pid 322] <... close resumed>) = 0 [pid 322] mkdir("./bus", 0777 [pid 321] close(3 [pid 322] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 321] <... close resumed>) = 0 [pid 322] mount("/dev/loop2", "./bus", "ext4", MS_DIRSYNC|MS_NOATIME|MS_LAZYTIME, ",errors=continue" [pid 321] mkdir("./bus", 0777) = -1 EEXIST (File exists) [ 26.472201][ T23] audit: type=1400 audit(1669654516.149:77): avc: denied { mounton } for pid=308 comm="syz-executor241" path="/root/bus" dev="sda1" ino=1138 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 26.522352][ T315] EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue [ 26.525320][ T321] EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue [ 26.541100][ T23] audit: type=1400 audit(1669654516.219:78): avc: denied { mount } for pid=312 comm="syz-executor241" name="/" dev="loop1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 26.542344][ T322] EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue [pid 321] mount("/dev/loop4", "./bus", "ext4", MS_DIRSYNC|MS_NOATIME|MS_LAZYTIME, ",errors=continue" [pid 315] <... mount resumed>) = 0 [pid 316] <... mount resumed>) = 0 [pid 316] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 316] chdir("./bus") = 0 [pid 316] ioctl(4, LOOP_CLR_FD) = 0 [pid 316] close(4) = 0 [pid 316] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 313] <... futex resumed>) = 0 [pid 313] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 313] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 316] <... futex resumed>) = 1 [pid 316] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOFOLLOW|O_NOATIME|0x29800030, 000 [pid 315] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 315] chdir("./bus") = 0 [pid 315] ioctl(4, LOOP_CLR_FD) = 0 [pid 315] close(4) = 0 [pid 315] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [ 26.563847][ T316] EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue [ 26.576042][ T319] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 26.584169][ T23] audit: type=1400 audit(1669654516.259:79): avc: denied { write } for pid=313 comm="syz-executor241" name="/" dev="loop3" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 26.608342][ T320] EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue [pid 315] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 321] <... mount resumed>) = 0 [pid 319] <... mount resumed>) = 0 [pid 316] <... open resumed>) = 4 [pid 312] <... futex resumed>) = 0 [pid 321] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 319] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 321] <... openat resumed>) = 3 [pid 319] <... openat resumed>) = 3 [pid 321] chdir("./bus" [pid 319] chdir("./bus" [pid 321] <... chdir resumed>) = 0 [pid 319] <... chdir resumed>) = 0 [pid 321] ioctl(4, LOOP_CLR_FD [pid 319] ioctl(4, LOOP_CLR_FD [pid 321] <... ioctl resumed>) = 0 [pid 319] <... ioctl resumed>) = 0 [pid 321] close(4 [pid 319] close(4 [pid 321] <... close resumed>) = 0 [pid 319] <... close resumed>) = 0 [pid 321] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 319] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 321] <... futex resumed>) = 1 [pid 319] <... futex resumed>) = 1 [pid 308] <... futex resumed>) = 0 [pid 321] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 319] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOFOLLOW|O_NOATIME|0x29800030, 000 [pid 308] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 308] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 316] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 312] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 317] <... futex resumed>) = 0 [pid 319] <... open resumed>) = 4 [pid 316] <... futex resumed>) = 0 [pid 313] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 319] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 308] <... futex resumed>) = 0 [pid 319] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 308] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 319] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 317] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 316] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9 [pid 315] <... futex resumed>) = 0 [pid 313] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 312] <... futex resumed>) = 1 [pid 308] <... futex resumed>) = 0 [pid 319] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9 [pid 315] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOFOLLOW|O_NOATIME|0x29800030, 000 [pid 308] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 315] <... open resumed>) = 4 [pid 315] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 315] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 322] <... mount resumed>) = 0 [pid 322] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 322] chdir("./bus") = 0 [pid 322] ioctl(4, LOOP_CLR_FD) = 0 [pid 322] close(4) = 0 [pid 322] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 322] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 321] <... futex resumed>) = 0 [pid 318] <... futex resumed>) = 0 [pid 317] <... futex resumed>) = 1 [pid 316] <... write resumed>) = 9 [pid 313] <... futex resumed>) = 0 [pid 312] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 321] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOFOLLOW|O_NOATIME|0x29800030, 000 [pid 318] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 317] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 316] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 313] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 312] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 322] <... futex resumed>) = 0 [pid 318] <... futex resumed>) = 1 [pid 316] <... futex resumed>) = 0 [pid 313] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 312] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 322] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOFOLLOW|O_NOATIME|0x29800030, 000 [pid 318] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 316] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 315] <... futex resumed>) = 0 [pid 313] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 312] <... futex resumed>) = 1 [pid 322] <... open resumed>) = 4 [pid 316] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 315] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9 [pid 313] <... futex resumed>) = 0 [pid 312] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 322] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 316] openat(AT_FDCWD, "./bus", O_RDONLY [pid 315] <... write resumed>) = 9 [pid 313] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 322] <... futex resumed>) = 1 [pid 318] <... futex resumed>) = 0 [pid 316] <... openat resumed>) = 5 [pid 315] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 322] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9 [pid 318] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 316] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 315] <... futex resumed>) = 1 [pid 312] <... futex resumed>) = 0 [pid 322] <... write resumed>) = 9 [pid 318] <... futex resumed>) = 0 [pid 316] <... futex resumed>) = 1 [pid 315] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 313] <... futex resumed>) = 0 [pid 312] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 322] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 318] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 316] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 315] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 313] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 312] <... futex resumed>) = 0 [pid 322] <... futex resumed>) = 0 [pid 318] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 316] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 315] openat(AT_FDCWD, "./bus", O_RDONLY [pid 313] <... futex resumed>) = 0 [pid 312] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 322] openat(AT_FDCWD, "./bus", O_RDONLY [pid 318] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 316] open("./bus", O_RDWR [pid 315] <... openat resumed>) = 5 [pid 313] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 322] <... openat resumed>) = 5 [pid 318] <... futex resumed>) = 0 [pid 316] <... open resumed>) = 6 [pid 315] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 322] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 318] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 316] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 315] <... futex resumed>) = 1 [pid 312] <... futex resumed>) = 0 [pid 322] <... futex resumed>) = 0 [pid 318] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 316] <... futex resumed>) = 1 [pid 315] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 313] <... futex resumed>) = 0 [pid 312] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 322] open("./bus", O_RDWR [pid 318] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 316] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 315] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 313] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 312] <... futex resumed>) = 0 [pid 322] <... open resumed>) = 6 [pid 318] <... futex resumed>) = 0 [pid 316] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 315] open("./bus", O_RDWR [pid 313] <... futex resumed>) = 0 [pid 312] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 322] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 318] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 316] mmap(0x20000000, 6291456, PROT_WRITE|PROT_EXEC|PROT_SEM|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 315] <... open resumed>) = 6 [pid 313] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 322] <... futex resumed>) = 0 [pid 318] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 316] <... mmap resumed>) = 0x20000000 [pid 315] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 322] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 318] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 316] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 315] <... futex resumed>) = 1 [pid 312] <... futex resumed>) = 0 [pid 322] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 318] <... futex resumed>) = 0 [pid 316] <... futex resumed>) = 1 [pid 315] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 313] <... futex resumed>) = 0 [pid 312] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 322] mmap(0x20000000, 6291456, PROT_WRITE|PROT_EXEC|PROT_SEM|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 318] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 316] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 315] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 313] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 312] <... futex resumed>) = 0 [pid 322] <... mmap resumed>) = 0x20000000 [pid 316] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 315] mmap(0x20000000, 6291456, PROT_WRITE|PROT_EXEC|PROT_SEM|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 313] <... futex resumed>) = 0 [pid 312] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 322] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [ 26.612148][ T23] audit: type=1400 audit(1669654516.259:80): avc: denied { add_name } for pid=313 comm="syz-executor241" name="bus" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 26.642104][ T23] audit: type=1400 audit(1669654516.259:81): avc: denied { create } for pid=313 comm="syz-executor241" name="bus" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [pid 316] sendfile(4, 5, NULL, 2147483713 [pid 315] <... mmap resumed>) = 0x20000000 [pid 313] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 322] <... futex resumed>) = 1 [pid 321] <... open resumed>) = 4 [pid 318] <... futex resumed>) = 0 [pid 315] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 322] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 321] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 318] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 315] <... futex resumed>) = 1 [pid 312] <... futex resumed>) = 0 [pid 322] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 321] <... futex resumed>) = 1 [pid 318] <... futex resumed>) = 0 [pid 317] <... futex resumed>) = 0 [pid 315] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 312] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [ 26.655760][ T316] EXT4-fs error (device loop3): ext4_mb_generate_buddy:747: group 0, block bitmap and bg descriptor inconsistent: 25 vs 150994969 free clusters [ 26.662913][ T23] audit: type=1400 audit(1669654516.289:82): avc: denied { read write open } for pid=313 comm="syz-executor241" path="/root/bus/bus" dev="loop3" ino=18 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [ 26.686675][ T322] EXT4-fs error (device loop2): ext4_mb_generate_buddy:747: group 0, block bitmap and bg descriptor inconsistent: 25 vs 150994969 free clusters [pid 322] sendfile(4, 5, NULL, 2147483713 [pid 321] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 318] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 317] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 315] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 312] <... futex resumed>) = 0 [pid 321] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 320] <... mount resumed>) = 0 [pid 319] <... write resumed>) = 9 [pid 317] <... futex resumed>) = 0 [pid 315] sendfile(4, 5, NULL, 2147483713 [pid 312] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 321] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9 [pid 319] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 317] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 319] <... futex resumed>) = 1 [pid 319] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 320] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 308] <... futex resumed>) = 0 [pid 313] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 313] futex(0x7f39f928f6dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 313] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f39f0e75000 [pid 313] mprotect(0x7f39f0e76000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 313] clone(child_stack=0x7f39f0e952f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[347], tls=0x7f39f0e95700, child_tidptr=0x7f39f0e959d0) = 347 [pid 313] futex(0x7f39f928f6d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 313] futex(0x7f39f928f6dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 347 attached [pid 347] set_robust_list(0x7f39f0e959e0, 24) = 0 [pid 320] <... openat resumed>) = 3 [pid 308] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 321] <... write resumed>) = 9 [pid 321] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 317] <... futex resumed>) = 0 [pid 321] openat(AT_FDCWD, "./bus", O_RDONLY [pid 317] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 321] <... openat resumed>) = 5 [pid 317] <... futex resumed>) = 0 [pid 321] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 317] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 321] <... futex resumed>) = 0 [pid 317] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 321] open("./bus", O_RDWR [pid 317] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 321] <... open resumed>) = 6 [pid 317] <... futex resumed>) = 0 [pid 321] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 317] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 321] <... futex resumed>) = 0 [pid 317] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 321] mmap(0x20000000, 6291456, PROT_WRITE|PROT_EXEC|PROT_SEM|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 317] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 321] <... mmap resumed>) = 0x20000000 [pid 317] <... futex resumed>) = 0 [pid 321] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 317] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 321] <... futex resumed>) = 0 [pid 317] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 321] sendfile(4, 5, NULL, 2147483713 [pid 317] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 26.701217][ T316] EXT4-fs (loop3): Delayed block allocation failed for inode 18 at logical offset 0 with max blocks 1 with error 28 [ 26.717229][ T322] EXT4-fs (loop2): Delayed block allocation failed for inode 18 at logical offset 0 with max blocks 1 with error 28 [ 26.728167][ T316] EXT4-fs (loop3): This should not happen!! Data will be lost [ 26.728167][ T316] [ 26.741407][ T322] EXT4-fs (loop2): This should not happen!! Data will be lost [ 26.741407][ T322] [ 26.749716][ T316] EXT4-fs (loop3): Total free blocks count 0 [ 26.761757][ T322] EXT4-fs (loop2): Total free blocks count 0 [pid 317] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 320] chdir("./bus" [pid 308] <... futex resumed>) = 1 [pid 319] <... futex resumed>) = 0 [pid 318] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 312] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 319] openat(AT_FDCWD, "./bus", O_RDONLY [pid 318] futex(0x7f39f928f6dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 312] futex(0x7f39f928f6dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 319] <... openat resumed>) = 5 [pid 318] <... futex resumed>) = 0 [pid 312] <... futex resumed>) = 0 [pid 319] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 318] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 312] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 319] <... futex resumed>) = 0 [pid 318] <... mmap resumed>) = 0x7f39f0e75000 [pid 312] <... mmap resumed>) = 0x7f39f0e75000 [pid 319] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 318] mprotect(0x7f39f0e76000, 131072, PROT_READ|PROT_WRITE [pid 312] mprotect(0x7f39f0e76000, 131072, PROT_READ|PROT_WRITE [pid 318] <... mprotect resumed>) = 0 [pid 312] <... mprotect resumed>) = 0 [pid 318] clone(child_stack=0x7f39f0e952f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 312] clone(child_stack=0x7f39f0e952f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 318] <... clone resumed>, parent_tid=[348], tls=0x7f39f0e95700, child_tidptr=0x7f39f0e959d0) = 348 [pid 312] <... clone resumed>, parent_tid=[349], tls=0x7f39f0e95700, child_tidptr=0x7f39f0e959d0) = 349 [pid 318] futex(0x7f39f928f6d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 312] futex(0x7f39f928f6d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 318] <... futex resumed>) = 0 [pid 312] <... futex resumed>) = 0 [pid 318] futex(0x7f39f928f6dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 312] futex(0x7f39f928f6dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 349 attached [pid 349] set_robust_list(0x7f39f0e959e0, 24) = 0 ./strace-static-x86_64: Process 348 attached [pid 348] set_robust_list(0x7f39f0e959e0, 24) = 0 [pid 320] <... chdir resumed>) = 0 [pid 308] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 320] ioctl(4, LOOP_CLR_FD [pid 308] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 313] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 320] <... ioctl resumed>) = 0 [pid 308] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 320] close(4 [pid 308] <... futex resumed>) = 1 [pid 319] <... futex resumed>) = 0 [pid 317] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 319] open("./bus", O_RDWR [pid 317] futex(0x7f39f928f6dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 319] <... open resumed>) = 6 [pid 317] <... futex resumed>) = 0 [pid 319] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 317] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 319] <... futex resumed>) = 0 [pid 317] <... mmap resumed>) = 0x7f39f0e75000 [pid 319] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 317] mprotect(0x7f39f0e76000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 317] clone(child_stack=0x7f39f0e952f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[350], tls=0x7f39f0e95700, child_tidptr=0x7f39f0e959d0) = 350 [pid 317] futex(0x7f39f928f6d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 317] futex(0x7f39f928f6dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 350 attached [pid 350] set_robust_list(0x7f39f0e959e0, 24) = 0 [ 26.765449][ T316] EXT4-fs (loop3): Free/Dirty block details [ 26.774107][ T322] EXT4-fs (loop2): Free/Dirty block details [ 26.777306][ T316] EXT4-fs (loop3): free_blocks=2415919104 [ 26.783573][ T322] EXT4-fs (loop2): free_blocks=2415919104 [ 26.789010][ T316] EXT4-fs (loop3): dirty_blocks=16 [ 26.795112][ T322] EXT4-fs (loop2): dirty_blocks=16 [ 26.799853][ T316] EXT4-fs (loop3): Block reservation details [ 26.805388][ T322] EXT4-fs (loop2): Block reservation details [ 26.810894][ T316] EXT4-fs (loop3): i_reserved_data_blocks=1 [pid 320] <... close resumed>) = 0 [pid 308] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 318] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 312] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 320] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 348] creat(0x200001c0, 0420) = -1 EISDIR (Is a directory) [pid 348] futex(0x7f39f928f6dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 348] futex(0x7f39f928f6d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 322] <... sendfile resumed>) = 63 [pid 322] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 322] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 350] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x200001c0} --- [pid 320] <... futex resumed>) = 1 [pid 316] <... sendfile resumed>) = 63 [pid 314] <... futex resumed>) = 0 [pid 308] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory [pid 320] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 319] <... futex resumed>) = 0 [pid 318] write(1, "write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory\n", 90 [pid 316] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 314] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... futex resumed>) = 1 [pid 320] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 319] mmap(0x20000000, 6291456, PROT_WRITE|PROT_EXEC|PROT_SEM|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 318] <... write resumed>) = 90 [pid 316] <... futex resumed>) = 0 [pid 314] <... futex resumed>) = 0 [pid 308] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 320] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOFOLLOW|O_NOATIME|0x29800030, 000 [pid 318] exit_group(0 [pid 316] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 314] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 348] <... futex resumed>) = ? [pid 318] <... exit_group resumed>) = ? [pid 348] +++ exited with 0 +++ [pid 350] creat(0x200001c0, 0420) = -1 ENOENT (No such file or directory) [pid 350] futex(0x7f39f928f6dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 317] <... futex resumed>) = 0 [pid 350] <... futex resumed>) = 1 [pid 350] futex(0x7f39f928f6d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 349] creat(0x200001c0, 0420 [pid 347] creat(0x200001c0, 0420 [pid 349] <... creat resumed>) = -1 EISDIR (Is a directory) [pid 347] <... creat resumed>) = -1 EISDIR (Is a directory) write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory [pid 349] futex(0x7f39f928f6dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 347] futex(0x7f39f928f6dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 349] <... futex resumed>) = 0 [pid 347] <... futex resumed>) = 0 [pid 349] futex(0x7f39f928f6d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 347] futex(0x7f39f928f6d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 313] write(1, "write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory\n", 90) = 90 [pid 313] exit_group(0 [pid 347] <... futex resumed>) = ? [pid 316] <... futex resumed>) = ? [pid 313] <... exit_group resumed>) = ? [pid 347] +++ exited with 0 +++ [pid 316] +++ exited with 0 +++ [pid 313] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=313, si_uid=0, si_status=0, si_utime=0, si_stime=14} --- [ 26.818370][ T350] EXT4-fs error (device loop4): ext4_mb_generate_buddy:747: group 0, block bitmap and bg descriptor inconsistent: 25 vs 150994969 free clusters [ 26.830256][ T315] EXT4-fs (loop3): Delayed block allocation failed for inode 18 at logical offset 0 with max blocks 1 with error 28 [ 26.838012][ T322] EXT4-fs (loop2): i_reserved_data_blocks=1 [ 26.849577][ T315] EXT4-fs (loop3): This should not happen!! Data will be lost [ 26.849577][ T315] [pid 309] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3 [pid 322] <... futex resumed>) = ? [pid 320] <... open resumed>) = 4 [pid 309] <... close resumed>) = 0 [pid 322] +++ exited with 0 +++ [pid 320] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 318] +++ exited with 0 +++ [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 320] <... futex resumed>) = 1 [pid 314] <... futex resumed>) = 0 [pid 320] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 351 attached [pid 315] <... sendfile resumed>) = -1 ENOSPC (No space left on device) [pid 314] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=318, si_uid=0, si_status=0, si_utime=0, si_stime=14} --- [pid 314] <... futex resumed>) = 1 [pid 309] <... clone resumed>, child_tidptr=0x55555614e6d0) = 351 [pid 314] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555614e6d0) = 352 [pid 315] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 315] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 320] <... futex resumed>) = 0 [pid 312] write(1, "write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory\n", 90 [pid 320] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory [pid 312] <... write resumed>) = 90 [pid 312] exit_group(0 [pid 320] <... write resumed>) = 9 [pid 312] <... exit_group resumed>) = ? [pid 349] <... futex resumed>) = ? [pid 349] +++ exited with 0 +++ [pid 315] <... futex resumed>) = ? [pid 320] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 352 attached ) = 1 [pid 314] <... futex resumed>) = 0 [pid 315] +++ exited with 0 +++ [pid 312] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=312, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- [pid 306] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop1", 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=0x55555614e6d0) = 353 [pid 352] set_robust_list(0x55555614e6e0, 24 [pid 320] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 314] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 351] set_robust_list(0x55555614e6e0, 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 351] close(3) = 0 [pid 351] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 351] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f39f9196000 [pid 351] mprotect(0x7f39f9197000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 351] clone(child_stack=0x7f39f91b62f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[354], tls=0x7f39f91b6700, child_tidptr=0x7f39f91b69d0) = 354 [pid 351] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 351] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 353 attached [pid 352] <... set_robust_list resumed>) = 0 [pid 320] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 314] <... futex resumed>) = 0 [pid 353] set_robust_list(0x55555614e6e0, 24) = 0 [pid 353] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 353] setpgid(0, 0) = 0 [pid 353] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 353] write(3, "1000", 4) = 4 [pid 353] close(3) = 0 [pid 353] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 353] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f39f9196000 [pid 353] mprotect(0x7f39f9197000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 353] clone(child_stack=0x7f39f91b62f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[355], tls=0x7f39f91b6700, child_tidptr=0x7f39f91b69d0) = 355 [pid 353] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 353] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 354 attached [pid 354] set_robust_list(0x7f39f91b69e0, 24) = 0 [pid 354] memfd_create("syzkaller", 0) = 3 [pid 320] openat(AT_FDCWD, "./bus", O_RDONLY [pid 352] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 314] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 320] <... openat resumed>) = 5 [pid 352] <... prctl resumed>) = 0 [pid 320] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 354] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f39f0d96000 [pid 352] setpgid(0, 0 [pid 320] <... futex resumed>) = 1 [pid 314] <... futex resumed>) = 0 [pid 352] <... setpgid resumed>) = 0 [pid 320] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 314] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 320] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 352] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 314] <... futex resumed>) = 0 [pid 320] open("./bus", O_RDWR) = 6 [pid 314] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 352] <... openat resumed>) = 3 [pid 320] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 314] <... futex resumed>) = 0 [pid 352] write(3, "1000", 4 [pid 320] mmap(0x20000000, 6291456, PROT_WRITE|PROT_EXEC|PROT_SEM|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 314] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 320] <... mmap resumed>) = 0x20000000 [pid 352] <... write resumed>) = 4 [ 26.856832][ T321] EXT4-fs (loop4): Delayed block allocation failed for inode 18 at logical offset 0 with max blocks 1 with error 28 [ 26.880061][ T321] EXT4-fs (loop4): This should not happen!! Data will be lost [ 26.880061][ T321] [ 26.891881][ T321] EXT4-fs (loop4): Total free blocks count 0 [ 26.898428][ T321] EXT4-fs (loop4): Free/Dirty block details [pid 320] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 314] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 352] close(3 [pid 320] <... futex resumed>) = 0 [pid 314] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 320] sendfile(4, 5, NULL, 2147483713 [pid 352] <... close resumed>) = 0 [pid 314] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 352] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 352] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f39f9196000 [pid 352] mprotect(0x7f39f9197000, 131072, PROT_READ|PROT_WRITE) = 0 ./strace-static-x86_64: Process 355 attached [pid 355] set_robust_list(0x7f39f91b69e0, 24) = 0 [pid 355] memfd_create("syzkaller", 0) = 3 [pid 355] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f39f0d96000 [pid 308] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 308] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 308] futex(0x7f39f928f6dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 308] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f39f0e75000 [pid 308] mprotect(0x7f39f0e76000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 308] clone(child_stack=0x7f39f0e952f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[356], tls=0x7f39f0e95700, child_tidptr=0x7f39f0e959d0) = 356 [pid 308] futex(0x7f39f928f6d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 308] futex(0x7f39f928f6dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 354] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 352] clone(child_stack=0x7f39f91b62f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[357], tls=0x7f39f91b6700, child_tidptr=0x7f39f91b69d0) = 357 [pid 352] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 352] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 354] <... write resumed>) = 1048576 [pid 355] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 354] munmap(0x7f39f0d96000, 1048576) = 0 [pid 354] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 354] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 354] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 356 attached [pid 356] set_robust_list(0x7f39f0e959e0, 24 [pid 354] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 354] close(4) = 0 [pid 354] close(3 [pid 356] <... set_robust_list resumed>) = 0 [pid 356] sendfile(4, 5, NULL, 2147483713write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory [pid 354] <... close resumed>) = 0 ./strace-static-x86_64: Process 357 attached [pid 357] set_robust_list(0x7f39f91b69e0, 24) = 0 [pid 357] memfd_create("syzkaller", 0) = 3 [pid 357] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f39f0d96000 [pid 354] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 351] <... futex resumed>) = 0 [pid 351] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 351] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 354] <... futex resumed>) = 1 [pid 354] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOFOLLOW|O_NOATIME|0x29800030, 000) = -1 EISDIR (Is a directory) [pid 354] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 351] <... futex resumed>) = 0 [pid 351] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 351] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 354] <... futex resumed>) = 1 [pid 354] write(-1, "\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9) = -1 EBADF (Bad file descriptor) [pid 354] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 351] <... futex resumed>) = 0 [pid 351] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 351] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 354] <... futex resumed>) = 1 [pid 354] openat(AT_FDCWD, "./bus", O_RDONLY) = 3 [pid 354] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 351] <... futex resumed>) = 0 [pid 351] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 351] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 354] <... futex resumed>) = 1 [pid 354] open("./bus", O_RDWR) = -1 EISDIR (Is a directory) [pid 355] <... write resumed>) = 1048576 [pid 354] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 351] <... futex resumed>) = 0 [pid 351] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 351] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 354] <... futex resumed>) = 1 [pid 354] mmap(0x20000000, 6291456, PROT_WRITE|PROT_EXEC|PROT_SEM|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 351] <... futex resumed>) = 0 [pid 351] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 351] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 354] <... futex resumed>) = 1 [pid 354] sendfile(-1, 3, NULL, 2147483713) = -1 EBADF (Bad file descriptor) [pid 354] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 351] <... futex resumed>) = 0 [pid 351] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 351] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 354] <... futex resumed>) = 1 [pid 354] creat("./file0", 0420) = 4 [pid 355] munmap(0x7f39f0d96000, 1048576) = 0 [pid 354] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 351] <... futex resumed>) = 0 [pid 351] write(1, "write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory\n", 90) = 90 [pid 351] exit_group(0) = ? [pid 354] <... futex resumed>) = ? [pid 355] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 354] +++ exited with 0 +++ [pid 351] +++ exited with 0 +++ [pid 314] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=351, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3 [pid 314] futex(0x7f39f928f6dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 309] <... close resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555614e6d0) = 358 [pid 355] <... openat resumed>) = 4 [pid 355] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 355] ioctl(4, LOOP_CLR_FD) = 0 [pid 314] <... futex resumed>) = 0 [pid 355] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 314] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 308] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 355] close(4 [pid 308] futex(0x7f39f928f6ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 355] <... close resumed>) = 0 [pid 308] <... futex resumed>) = 0 [pid 355] close(3 [pid 308] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 314] <... mmap resumed>) = 0x7f39f0e75000 [pid 308] <... mmap resumed>) = 0x7f39f0e54000 [pid 314] mprotect(0x7f39f0e76000, 131072, PROT_READ|PROT_WRITE [pid 308] mprotect(0x7f39f0e55000, 131072, PROT_READ|PROT_WRITE) = 0 [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"..., 1048576 [pid 355] <... close resumed>) = 0 [pid 314] <... mprotect resumed>) = 0 [pid 308] clone(child_stack=0x7f39f0e742f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 314] clone(child_stack=0x7f39f0e952f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 308] <... clone resumed>, parent_tid=[359], tls=0x7f39f0e74700, child_tidptr=0x7f39f0e749d0) = 359 [pid 308] futex(0x7f39f928f6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 308] futex(0x7f39f928f6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 358 attached [pid 358] set_robust_list(0x55555614e6e0, 24) = 0 [pid 358] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 358] setpgid(0, 0) = 0 [pid 358] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 355] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 353] <... futex resumed>) = 0 [pid 353] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 353] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 355] <... futex resumed>) = 1 [pid 314] <... clone resumed>, parent_tid=[360], tls=0x7f39f0e95700, child_tidptr=0x7f39f0e959d0) = 360 [pid 355] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOFOLLOW|O_NOATIME|0x29800030, 000 [pid 314] futex(0x7f39f928f6d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 355] <... open resumed>) = -1 EISDIR (Is a directory) [pid 314] <... futex resumed>) = 0 [pid 358] <... openat resumed>) = 3 [pid 314] futex(0x7f39f928f6dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 355] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 353] <... futex resumed>) = 0 [pid 353] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 353] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 355] <... futex resumed>) = 1 [pid 355] write(-1, "\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9) = -1 EBADF (Bad file descriptor) [pid 355] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 353] <... futex resumed>) = 0 [pid 353] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 355] <... futex resumed>) = 1 [pid 353] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 358] write(3, "1000", 4 [pid 355] openat(AT_FDCWD, "./bus", O_RDONLY [pid 358] <... write resumed>) = 4 [pid 355] <... openat resumed>) = 3 [pid 358] close(3 [pid 355] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 358] <... close resumed>) = 0 [pid 355] <... futex resumed>) = 1 [pid 353] <... futex resumed>) = 0 [pid 358] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 355] open("./bus", O_RDWR [pid 353] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 358] <... futex resumed>) = 0 [pid 355] <... open resumed>) = -1 EISDIR (Is a directory) [pid 353] <... futex resumed>) = 0 [pid 358] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 355] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 353] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 358] <... mmap resumed>) = 0x7f39f9196000 [pid 355] <... futex resumed>) = 0 [pid 353] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 358] mprotect(0x7f39f9197000, 131072, PROT_READ|PROT_WRITE [pid 355] mmap(0x20000000, 6291456, PROT_WRITE|PROT_EXEC|PROT_SEM|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 353] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 358] <... mprotect resumed>) = 0 [pid 355] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 353] <... futex resumed>) = 0 [pid 358] clone(child_stack=0x7f39f91b62f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 355] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 353] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 357] <... write resumed>) = 1048576 [pid 355] <... futex resumed>) = 0 [pid 353] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 358] <... clone resumed>, parent_tid=[361], tls=0x7f39f91b6700, child_tidptr=0x7f39f91b69d0) = 361 [pid 355] sendfile(-1, 3, NULL, 2147483713 [pid 353] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 358] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 355] <... sendfile resumed>) = -1 EBADF (Bad file descriptor) [pid 353] <... futex resumed>) = 0 [pid 358] <... futex resumed>) = 0 [pid 355] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 353] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 358] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 355] <... futex resumed>) = 0 [pid 353] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) ./strace-static-x86_64: Process 360 attached [pid 355] creat("./file0", 0420 [pid 353] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory [pid 360] set_robust_list(0x7f39f0e959e0, 24 [pid 355] <... creat resumed>) = 4 [pid 353] <... futex resumed>) = 0 [pid 360] <... set_robust_list resumed>) = 0 [pid 355] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 353] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 355] <... futex resumed>) = 0 [pid 353] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 355] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 353] write(1, "write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory\n", 90) = 90 [pid 353] exit_group(0 [pid 355] <... futex resumed>) = ? [pid 353] <... exit_group resumed>) = ? [pid 355] +++ exited with 0 +++ [pid 353] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=353, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] openat(AT_FDCWD, "/dev/loop1", 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=0x55555614e6d0) = 362 ./strace-static-x86_64: Process 361 attached [pid 361] set_robust_list(0x7f39f91b69e0, 24) = 0 [pid 361] memfd_create("syzkaller", 0) = 3 [pid 361] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f39f0d96000 [pid 357] munmap(0x7f39f0d96000, 1048576) = 0 [pid 357] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 357] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 357] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 359 attached [pid 359] set_robust_list(0x7f39f0e749e0, 24) = 0 [pid 357] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 357] close(4) = 0 [pid 357] close(3./strace-static-x86_64: Process 362 attached [pid 362] set_robust_list(0x55555614e6e0, 24) = 0 [pid 357] <... close resumed>) = 0 [pid 362] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 362] setpgid(0, 0) = 0 [pid 362] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 362] write(3, "1000", 4) = 4 [pid 362] close(3) = 0 [pid 362] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 362] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f39f9196000 [pid 362] mprotect(0x7f39f9197000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 362] clone(child_stack=0x7f39f91b62f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [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"..., 1048576 [pid 362] <... clone resumed>, parent_tid=[363], tls=0x7f39f91b6700, child_tidptr=0x7f39f91b69d0) = 363 [pid 362] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 362] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 357] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 352] <... futex resumed>) = 0 [pid 357] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOFOLLOW|O_NOATIME|0x29800030, 000 [pid 352] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... open resumed>) = -1 EISDIR (Is a directory) [pid 352] <... futex resumed>) = 0 [pid 357] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 352] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 357] <... futex resumed>) = 0 [pid 352] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 357] write(-1, "\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9 [pid 352] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... write resumed>) = -1 EBADF (Bad file descriptor) [pid 352] <... futex resumed>) = 0 [pid 357] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 352] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 357] <... futex resumed>) = 0 [pid 352] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 357] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 352] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 352] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 357] <... futex resumed>) = 0 [pid 357] openat(AT_FDCWD, "./bus", O_RDONLY) = 3 [pid 357] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 352] <... futex resumed>) = 0 [pid 357] open("./bus", O_RDWR [pid 352] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... open resumed>) = -1 EISDIR (Is a directory) [pid 352] <... futex resumed>) = 0 [pid 357] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 352] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 357] <... futex resumed>) = 0 [pid 357] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 352] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 352] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... futex resumed>) = 0 [pid 352] <... futex resumed>) = 1 [pid 357] mmap(0x20000000, 6291456, PROT_WRITE|PROT_EXEC|PROT_SEM|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 352] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 357] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 357] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 352] <... futex resumed>) = 0 [pid 357] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 352] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 352] <... futex resumed>) = 0 [pid 357] sendfile(-1, 3, NULL, 2147483713 [pid 352] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 357] <... sendfile resumed>) = -1 EBADF (Bad file descriptor) [pid 357] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 352] <... futex resumed>) = 0 [pid 357] creat("./file0", 0420 [pid 352] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... creat resumed>) = 4 [pid 352] <... futex resumed>) = 0 [pid 357] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 352] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 357] <... futex resumed>) = 0 [pid 352] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [ 26.913879][ T320] EXT4-fs error (device loop5): ext4_mb_generate_buddy:747: group 0, block bitmap and bg descriptor inconsistent: 25 vs 150994969 free clusters [ 26.932919][ T320] EXT4-fs (loop5): Delayed block allocation failed for inode 18 at logical offset 0 with max blocks 1 with error 28 [ 26.936129][ T321] EXT4-fs (loop4): free_blocks=2415919104 [ 26.954179][ T320] EXT4-fs (loop5): This should not happen!! Data will be lost [ 26.954179][ T320] [pid 357] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 363 attached [pid 352] write(1, "write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory\n", 90write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory [pid 363] set_robust_list(0x7f39f91b69e0, 24 [pid 352] <... write resumed>) = 90 [pid 361] <... write resumed>) = 1048576 [pid 361] munmap(0x7f39f0d96000, 1048576) = 0 [pid 361] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 361] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 361] ioctl(4, LOOP_CLR_FD) = 0 [pid 363] <... set_robust_list resumed>) = 0 [pid 352] exit_group(0 [pid 308] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 363] memfd_create("syzkaller", 0 [pid 352] <... exit_group resumed>) = ? [pid 319] <... mmap resumed>) = 0x20000000 [pid 314] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 357] <... futex resumed>) = ? [pid 357] +++ exited with 0 +++ [ 27.004633][ T321] EXT4-fs (loop4): dirty_blocks=16 [ 27.006732][ T320] EXT4-fs (loop5): Total free blocks count 0 [ 27.010640][ T321] EXT4-fs (loop4): Block reservation details [ 27.018162][ T320] EXT4-fs (loop5): Free/Dirty block details [ 27.022300][ T321] EXT4-fs (loop4): i_reserved_data_blocks=1 [ 27.028431][ T320] EXT4-fs (loop5): free_blocks=2415919104 [ 27.035311][ T356] ------------[ cut here ]------------ [ 27.040509][ T320] EXT4-fs (loop5): dirty_blocks=16 [pid 363] <... memfd_create resumed>) = 3 [pid 361] ioctl(4, LOOP_SET_FD, 3 [pid 359] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x200001c0} --- [pid 352] +++ exited with 0 +++ [pid 319] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 363] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 361] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] creat(0x200001c0, 0420 [pid 363] <... mmap resumed>) = 0x7f39f0d96000 [pid 361] close(4 [pid 359] <... creat resumed>) = -1 ENOENT (No such file or directory) [pid 363] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 361] <... close resumed>) = 0 [pid 359] futex(0x7f39f928f6ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 361] close(3 [pid 359] <... futex resumed>) = 0 [pid 361] <... close resumed>) = 0 [pid 359] futex(0x7f39f928f6e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 361] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 358] <... futex resumed>) = 0 [pid 358] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 358] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 361] <... futex resumed>) = 1 [pid 361] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOFOLLOW|O_NOATIME|0x29800030, 000) = -1 EISDIR (Is a directory) [pid 361] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 358] <... futex resumed>) = 0 [pid 358] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 358] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 361] <... futex resumed>) = 1 [pid 361] write(-1, "\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9) = -1 EBADF (Bad file descriptor) [pid 361] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 358] <... futex resumed>) = 0 [pid 358] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 358] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 361] <... futex resumed>) = 1 [pid 361] openat(AT_FDCWD, "./bus", O_RDONLY) = 3 [pid 361] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 358] <... futex resumed>) = 0 [pid 358] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 358] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 361] <... futex resumed>) = 1 [pid 361] open("./bus", O_RDWR) = -1 EISDIR (Is a directory) [pid 361] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 358] <... futex resumed>) = 0 [pid 358] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 358] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 361] <... futex resumed>) = 1 [pid 361] mmap(0x20000000, 6291456, PROT_WRITE|PROT_EXEC|PROT_SEM|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 358] <... futex resumed>) = 0 [pid 358] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 358] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 361] <... futex resumed>) = 1 [pid 361] sendfile(-1, 3, NULL, 2147483713) = -1 EBADF (Bad file descriptor) [pid 361] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 358] <... futex resumed>) = 0 [pid 358] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 358] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 361] <... futex resumed>) = 1 [pid 361] creat("./file0", 0420) = 4 [pid 361] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory [pid 358] <... futex resumed>) = 0 [pid 358] write(1, "write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory\n", 90) = 90 [pid 358] exit_group(0) = ? [pid 361] <... futex resumed>) = ? [pid 361] +++ exited with 0 +++ [pid 358] +++ exited with 0 +++ [pid 363] <... write resumed>) = 1048576 [pid 363] munmap(0x7f39f0d96000, 1048576) = 0 [ 27.045001][ T356] kernel BUG at fs/ext4/inode.c:2837! [ 27.046491][ T356] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 27.050711][ T320] EXT4-fs (loop5): Block reservation details [ 27.055461][ T356] CPU: 0 PID: 356 Comm: syz-executor241 Not tainted 5.4.210-syzkaller-00006-gc80a5b2e7f63 #0 [ 27.055466][ T356] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 27.055499][ T356] RIP: 0010:ext4_writepages+0x3a2b/0x3a50 [ 27.082038][ T320] EXT4-fs (loop5): i_reserved_data_blocks=1 [pid 363] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 363] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 363] ioctl(4, LOOP_CLR_FD) = 0 [pid 363] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 363] close(4) = 0 [pid 363] close(3) = 0 [pid 363] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 362] <... futex resumed>) = 0 [pid 362] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 362] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 363] <... futex resumed>) = 1 [ 27.087627][ T356] Code: 94 c3 40 0f 94 c6 31 ff e8 f2 9f a0 ff 84 db 75 2e e8 59 9d a0 ff 48 bb 00 00 00 00 00 fc ff df e9 a9 f6 ff ff e8 45 9d a0 ff <0f> 0b e8 3e 9d a0 ff 0f 0b e8 37 9d a0 ff e8 62 a5 3b ff eb a3 e8 [ 27.087633][ T356] RSP: 0018:ffff8881dbadeec0 EFLAGS: 00010293 [ 27.087639][ T356] RAX: ffffffff81c4a22b RBX: 0000010000000000 RCX: ffff8881dc021f80 [ 27.087643][ T356] RDX: 0000000000000000 RSI: 0000010000000000 RDI: 0000000000000000 [ 27.087647][ T356] RBP: ffff8881dbadf290 R08: ffffffff81c470f7 R09: ffffed103cc7300b [ 27.087652][ T356] R10: ffffed103cc7300b R11: 1ffff1103cc7300a R12: ffff8881e6398100 [ 27.087655][ T356] R13: ffff8881dbadf400 R14: 0000011410000000 R15: 0000000000000001 [ 27.087661][ T356] FS: 00007f39f0e95700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 27.087666][ T356] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.087676][ T356] CR2: 00007f39f9271d61 CR3: 00000001dd08c000 CR4: 00000000003406f0 [ 27.188076][ T356] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.196043][ T356] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.204017][ T356] Call Trace: [ 27.207300][ T356] ? __ext4_handle_dirty_metadata+0x27d/0x620 [ 27.213362][ T356] ? ext4_mark_iloc_dirty+0x24af/0x3440 [ 27.218909][ T356] ? ext4_chunk_trans_blocks+0x2a0/0x2a0 [ 27.224537][ T356] ? ext4_readpage+0x2c0/0x2c0 [ 27.229296][ T356] ? ext4_reserve_inode_write+0x19c/0x220 [ 27.235048][ T356] ? ext4_mark_inode_dirty+0x4ca/0x780 [ 27.240600][ T356] ? ext4_blocks_for_truncate+0x220/0x220 [ 27.246321][ T356] ? iov_iter_advance+0x920/0xb20 [ 27.251340][ T356] ? ext4_readpage+0x2c0/0x2c0 [ 27.256095][ T356] do_writepages+0x13a/0x280 [ 27.260679][ T356] ? debug_smp_processor_id+0x20/0x20 [ 27.266042][ T356] ? __writepage+0x110/0x110 [ 27.270627][ T356] ? balance_dirty_pages_ratelimited+0x363/0x520 [ 27.276951][ T356] ? ext4_da_write_begin+0xf80/0xf80 [ 27.282238][ T356] file_write_and_wait_range+0x33f/0x410 [ 27.287869][ T356] ? __filemap_set_wb_err+0x160/0x160 [ 27.293234][ T356] ? grab_cache_page_write_begin+0x90/0x90 [ 27.299038][ T356] ? file_remove_privs+0x640/0x640 [ 27.304156][ T356] __generic_file_fsync+0x6e/0x190 [ 27.309265][ T356] ext4_sync_file+0x266/0xc70 [ 27.313947][ T356] ext4_file_write_iter+0xa05/0x10e0 [ 27.319230][ T356] ? ext4_file_read_iter+0x140/0x140 [ 27.324503][ T356] ? __kasan_kmalloc+0x1a5/0x1e0 [ 27.329428][ T356] ? do_splice_direct+0x2a0/0x3f0 [ 27.334442][ T356] ? __kasan_kmalloc+0x131/0x1e0 [ 27.339369][ T356] ? iter_file_splice_write+0x2b0/0x10f0 [ 27.345005][ T356] ? do_splice_direct+0x2a0/0x3f0 [ 27.350022][ T356] ? do_sendfile+0x8f2/0xf10 [ 27.354598][ T356] ? __x64_sys_sendfile64+0x1ce/0x230 [ 27.359961][ T356] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 27.366016][ T356] do_iter_readv_writev+0x529/0x740 [ 27.371192][ T356] ? vfs_dedupe_file_range+0x860/0x860 [ 27.376643][ T356] ? security_file_permission+0x140/0x330 [ 27.382351][ T356] do_iter_write+0x16f/0x570 [ 27.386942][ T356] iter_file_splice_write+0x887/0x10f0 [ 27.392409][ T356] ? splice_from_pipe+0x220/0x220 [ 27.397432][ T356] ? direct_splice_actor+0x25/0x120 [ 27.402622][ T356] splice_direct_to_actor+0x4c4/0xb20 [ 27.407987][ T356] ? _raw_spin_unlock_irq+0x4a/0x60 [ 27.413171][ T356] ? do_splice_direct+0x3f0/0x3f0 [ 27.418175][ T356] ? pipe_to_sendpage+0x300/0x300 [ 27.423189][ T356] ? security_file_permission+0x140/0x330 [ 27.428898][ T356] do_splice_direct+0x2a0/0x3f0 [ 27.433743][ T356] ? splice_direct_to_actor+0xb20/0xb20 [ 27.439284][ T356] do_sendfile+0x8f2/0xf10 [ 27.443697][ T356] ? compat_writev+0x3c0/0x3c0 [ 27.448449][ T356] ? syscall_trace_enter+0x652/0x940 [ 27.453737][ T356] __x64_sys_sendfile64+0x1ce/0x230 [ 27.458927][ T356] ? __ia32_sys_sendfile+0x240/0x240 [ 27.464210][ T356] do_syscall_64+0xcb/0x1c0 [ 27.468716][ T356] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 27.474600][ T356] RIP: 0033:0x7f39f9211f09 [ 27.479005][ T356] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 31 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 b8 ff ff ff f7 d8 64 89 01 48 [pid 363] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOFOLLOW|O_NOATIME|0x29800030, 000) = -1 EISDIR (Is a directory) [pid 363] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 362] <... futex resumed>) = 0 [pid 362] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 362] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 363] <... futex resumed>) = 1 [pid 363] write(-1, "\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9) = -1 EBADF (Bad file descriptor) [pid 363] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 362] <... futex resumed>) = 0 [pid 362] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 362] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 363] <... futex resumed>) = 1 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory [pid 363] openat(AT_FDCWD, "./bus", O_RDONLY) = 3 [pid 363] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 362] <... futex resumed>) = 0 [pid 362] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 362] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 363] <... futex resumed>) = 1 [pid 363] open("./bus", O_RDWR) = -1 EISDIR (Is a directory) [pid 363] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 362] <... futex resumed>) = 0 [pid 362] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 362] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 363] <... futex resumed>) = 1 [pid 363] mmap(0x20000000, 6291456, PROT_WRITE|PROT_EXEC|PROT_SEM|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 362] <... futex resumed>) = 0 [pid 362] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 362] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 363] <... futex resumed>) = 1 [pid 363] sendfile(-1, 3, NULL, 2147483713) = -1 EBADF (Bad file descriptor) [pid 363] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 362] <... futex resumed>) = 0 [pid 362] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 362] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 363] <... futex resumed>) = 1 [pid 363] creat("./file0", 0420) = 4 [pid 363] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 362] <... futex resumed>) = 0 [pid 362] write(1, "write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory\n", 90) = 90 [pid 362] exit_group(0) = ? [pid 363] <... futex resumed>) = ? [pid 363] +++ exited with 0 +++ [pid 362] +++ exited with 0 +++ [pid 360] creat(0x200001c0, 0420) = -1 EISDIR (Is a directory) [pid 360] futex(0x7f39f928f6dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 360] futex(0x7f39f928f6d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 319] <... futex resumed>) = 0 [pid 319] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=358, si_uid=0, si_status=0, si_utime=1, si_stime=1} --- [pid 309] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555614e6d0) = 364 ./strace-static-x86_64: Process 364 attached [pid 364] set_robust_list(0x55555614e6e0, 24) = 0 [pid 364] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 364] setpgid(0, 0) = 0 [pid 364] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 364] write(3, "1000", 4) = 4 [pid 364] close(3) = 0 [pid 364] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 364] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f39f9196000 [pid 364] mprotect(0x7f39f9197000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 364] clone(child_stack=0x7f39f91b62f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[365], tls=0x7f39f91b6700, child_tidptr=0x7f39f91b69d0) = 365 [pid 364] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 364] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 365 attached [pid 365] set_robust_list(0x7f39f91b69e0, 24) = 0 [pid 365] memfd_create("syzkaller", 0) = 3 [pid 365] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f39f0d96000 [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"..., 1048576) = 1048576 [pid 365] munmap(0x7f39f0d96000, 1048576) = 0 [pid 365] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 365] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 365] ioctl(4, LOOP_CLR_FDwrite to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory ) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=352, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555614e6d0) = 366 [pid 365] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 365] close(4) = 0 [pid 365] close(3 [pid 321] <... sendfile resumed>) = 27 [pid 320] <... sendfile resumed>) = 63 [pid 321] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 320] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=362, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 321] <... futex resumed>) = 0 [pid 320] <... futex resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 321] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 320] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 306] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 317] write(1, "write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory\n", 90 [pid 314] write(1, "write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory\n", 90 [pid 306] <... clone resumed>, child_tidptr=0x55555614e6d0) = 367 [pid 317] <... write resumed>) = 90 [pid 314] <... write resumed>) = 90 [pid 317] exit_group(0 [pid 314] exit_group(0 [pid 360] <... futex resumed>) = ? [pid 350] <... futex resumed>) = ? [pid 321] <... futex resumed>) = ? [pid 320] <... futex resumed>) = ? [pid 317] <... exit_group resumed>) = ? [pid 314] <... exit_group resumed>) = ? [pid 360] +++ exited with 0 +++ [pid 350] +++ exited with 0 +++ [pid 321] +++ exited with 0 +++ [pid 320] +++ exited with 0 +++ [pid 317] +++ exited with 0 +++ [pid 314] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=317, si_uid=0, si_status=0, si_utime=0, si_stime=13} --- [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=314, si_uid=0, si_status=0, si_utime=0, si_stime=9} --- [pid 310] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 311] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 310] <... openat resumed>) = 3 [pid 311] <... openat resumed>) = 3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 311] ioctl(3, LOOP_CLR_FD [pid 310] <... ioctl resumed>) = 0 [pid 311] <... ioctl resumed>) = 0 [pid 310] close(3 [pid 311] close(3 [pid 310] <... close resumed>) = 0 [pid 311] <... close resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 310] <... clone resumed>, child_tidptr=0x55555614e6d0) = 368 [pid 311] <... clone resumed>, child_tidptr=0x55555614e6d0) = 369 [pid 365] <... close resumed>) = 0 [pid 365] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 364] <... futex resumed>) = 0 [pid 364] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 364] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 365] <... futex resumed>) = 1 [pid 365] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOFOLLOW|O_NOATIME|0x29800030, 000) = -1 EISDIR (Is a directory) [pid 365] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 364] <... futex resumed>) = 0 [pid 364] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 364] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 365] <... futex resumed>) = 1 [pid 365] write(-1, "\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9) = -1 EBADF (Bad file descriptor) [pid 365] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 364] <... futex resumed>) = 0 [pid 364] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 364] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 365] <... futex resumed>) = 1 [pid 365] openat(AT_FDCWD, "./bus", O_RDONLY) = 3 [pid 365] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 364] <... futex resumed>) = 0 [pid 364] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 364] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 365] <... futex resumed>) = 1 [pid 365] open("./bus", O_RDWR) = -1 EISDIR (Is a directory) [pid 365] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 364] <... futex resumed>) = 0 [pid 364] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 364] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 365] <... futex resumed>) = 1 [pid 365] mmap(0x20000000, 6291456, PROT_WRITE|PROT_EXEC|PROT_SEM|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 364] <... futex resumed>) = 0 [pid 364] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 364] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 365] <... futex resumed>) = 1 [pid 365] sendfile(-1, 3, NULL, 2147483713) = -1 EBADF (Bad file descriptor) [pid 365] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 364] <... futex resumed>) = 0 [pid 364] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 364] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 365] <... futex resumed>) = 1 [pid 365] creat("./file0", 0420) = 4 ./strace-static-x86_64: Process 366 attached [pid 366] set_robust_list(0x55555614e6e0, 24 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory [pid 365] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 364] <... futex resumed>) = 0 [pid 364] write(1, "write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory\n", 90) = 90 [pid 364] exit_group(0) = ? [pid 365] <... futex resumed>) = ? [pid 365] +++ exited with 0 +++ [pid 364] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=364, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555614e6d0) = 370 [pid 366] <... set_robust_list resumed>) = 0 [pid 366] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [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] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 366] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f39f9196000 [pid 366] mprotect(0x7f39f9197000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 366] clone(child_stack=0x7f39f91b62f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[371], tls=0x7f39f91b6700, child_tidptr=0x7f39f91b69d0) = 371 [pid 366] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 366] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 370 attached [pid 370] set_robust_list(0x55555614e6e0, 24) = 0 [pid 370] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 370] setpgid(0, 0) = 0 [pid 370] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 370] write(3, "1000", 4) = 4 [pid 370] close(3) = 0 [pid 370] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 370] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f39f9196000 [pid 370] mprotect(0x7f39f9197000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 370] clone(child_stack=0x7f39f91b62f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[372], tls=0x7f39f91b6700, child_tidptr=0x7f39f91b69d0) = 372 [pid 370] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 370] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 371 attached [pid 371] set_robust_list(0x7f39f91b69e0, 24) = 0 [pid 371] memfd_create("syzkaller", 0) = 3 [pid 371] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f39f0d96000 ./strace-static-x86_64: Process 372 attached [pid 372] set_robust_list(0x7f39f91b69e0, 24) = 0 [pid 372] memfd_create("syzkaller", 0) = 3 [pid 372] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f39f0d96000 [pid 371] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [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"..., 1048576 [pid 371] <... write resumed>) = 1048576 ./strace-static-x86_64: Process 367 attached [pid 367] set_robust_list(0x55555614e6e0, 24) = 0 [pid 367] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 367] setpgid(0, 0) = 0 [pid 367] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 367] write(3, "1000", 4) = 4 [pid 367] close(3) = 0 [pid 367] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 367] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f39f9196000 [pid 371] munmap(0x7f39f0d96000, 1048576 [pid 367] mprotect(0x7f39f9197000, 131072, PROT_READ|PROT_WRITE [pid 371] <... munmap resumed>) = 0 [pid 367] <... mprotect resumed>) = 0 [pid 371] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 367] clone(child_stack=0x7f39f91b62f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 371] <... openat resumed>) = 4 [pid 371] ioctl(4, LOOP_SET_FD, 3 [pid 367] <... clone resumed>, parent_tid=[373], tls=0x7f39f91b6700, child_tidptr=0x7f39f91b69d0) = 373 [pid 371] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 367] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] ioctl(4, LOOP_CLR_FD [pid 367] <... futex resumed>) = 0 [pid 371] <... ioctl resumed>) = 0 [pid 367] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 371] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 371] close(4) = 0 [pid 371] close(3 [pid 372] <... write resumed>) = 1048576 [pid 372] munmap(0x7f39f0d96000, 1048576) = 0 [pid 371] <... close resumed>) = 0 [pid 372] openat(AT_FDCWD, "/dev/loop3", 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 371] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 366] <... futex resumed>) = 0 [pid 366] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 366] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 371] <... futex resumed>) = 1 [pid 371] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOFOLLOW|O_NOATIME|0x29800030, 000./strace-static-x86_64: Process 373 attached [pid 372] ioctl(4, LOOP_SET_FD, 3 [pid 371] <... open resumed>) = -1 EISDIR (Is a directory) [pid 373] set_robust_list(0x7f39f91b69e0, 24 [pid 372] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 371] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] <... set_robust_list resumed>) = 0 [pid 372] close(4 [pid 371] <... futex resumed>) = 1 [pid 366] <... futex resumed>) = 0 [pid 373] memfd_create("syzkaller", 0 [pid 372] <... close resumed>) = 0 [pid 371] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 366] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] <... memfd_create resumed>) = 3 [pid 372] close(3 [pid 371] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 366] <... futex resumed>) = 0 [pid 373] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 372] <... close resumed>) = 0 [pid 371] write(-1, "\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9 [pid 366] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 373] <... mmap resumed>) = 0x7f39f0d96000 [pid 371] <... write resumed>) = -1 EBADF (Bad file descriptor) [pid 373] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 371] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory [pid 308] write(1, "write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory\n", 90 [pid 371] <... futex resumed>) = 1 [pid 366] <... futex resumed>) = 0 [pid 308] <... write resumed>) = 90 [pid 366] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] exit_group(0 [pid 366] <... futex resumed>) = 0 [pid 359] <... futex resumed>) = ? [pid 319] <... futex resumed>) = ? [pid 308] <... exit_group resumed>) = ? [pid 366] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 359] +++ exited with 0 +++ [pid 319] +++ exited with 0 +++ [pid 371] openat(AT_FDCWD, "./bus", O_RDONLY [pid 372] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] <... openat resumed>) = 3 [pid 372] <... futex resumed>) = 1 [pid 371] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 370] <... futex resumed>) = 0 [pid 372] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 371] <... futex resumed>) = 1 [pid 370] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 366] <... futex resumed>) = 0 [pid 372] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 371] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 370] <... futex resumed>) = 0 [pid 366] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 372] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOFOLLOW|O_NOATIME|0x29800030, 000 [pid 371] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 370] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 366] <... futex resumed>) = 0 [pid 372] <... open resumed>) = -1 EISDIR (Is a directory) [pid 371] open("./bus", O_RDWR [pid 366] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 372] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] <... open resumed>) = -1 EISDIR (Is a directory) [pid 372] <... futex resumed>) = 1 [pid 371] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 370] <... futex resumed>) = 0 [pid 372] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 371] <... futex resumed>) = 1 [pid 370] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 366] <... futex resumed>) = 0 [pid 372] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 371] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 370] <... futex resumed>) = 0 [pid 366] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 372] write(-1, "\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9 [pid 371] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 370] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 366] <... futex resumed>) = 0 [pid 372] <... write resumed>) = -1 EBADF (Bad file descriptor) [pid 371] mmap(0x20000000, 6291456, PROT_WRITE|PROT_EXEC|PROT_SEM|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 366] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 372] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 372] <... futex resumed>) = 1 [pid 371] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 370] <... futex resumed>) = 0 [pid 372] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 371] <... futex resumed>) = 1 [pid 370] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 366] <... futex resumed>) = 0 [pid 372] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 371] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 370] <... futex resumed>) = 0 [pid 366] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 372] openat(AT_FDCWD, "./bus", O_RDONLY [pid 371] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 370] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 366] <... futex resumed>) = 0 [pid 372] <... openat resumed>) = 3 [pid 371] sendfile(-1, 3, NULL, 2147483713 [pid 366] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 372] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] <... sendfile resumed>) = -1 EBADF (Bad file descriptor) ./strace-static-x86_64: Process 368 attached [pid 372] <... futex resumed>) = 1 [pid 371] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 370] <... futex resumed>) = 0 [pid 372] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 371] <... futex resumed>) = 1 [pid 370] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] set_robust_list(0x55555614e6e0, 24 [pid 366] <... futex resumed>) = 0 [pid 372] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 371] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 370] <... futex resumed>) = 0 [pid 368] <... set_robust_list resumed>) = 0 [pid 366] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 372] open("./bus", O_RDWR [pid 371] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 370] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 368] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 366] <... futex resumed>) = 0 [pid 372] <... open resumed>) = -1 EISDIR (Is a directory) [pid 371] creat("./file0", 0420 [pid 368] <... prctl resumed>) = 0 [pid 366] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory [pid 372] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] <... creat resumed>) = 4 [pid 368] setpgid(0, 0 [pid 372] <... futex resumed>) = 1 [pid 371] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 370] <... futex resumed>) = 0 [pid 368] <... setpgid resumed>) = 0 [pid 372] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 371] <... futex resumed>) = 1 [pid 370] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 366] <... futex resumed>) = 0 [pid 372] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 371] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 370] <... futex resumed>) = 0 [pid 368] <... openat resumed>) = 3 [pid 366] write(1, "write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory\n", 90 [pid 372] mmap(0x20000000, 6291456, PROT_WRITE|PROT_EXEC|PROT_SEM|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 370] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 368] write(3, "1000", 4 [pid 366] <... write resumed>) = 90 [pid 372] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 368] <... write resumed>) = 4 [pid 366] exit_group(0 [pid 372] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] <... futex resumed>) = ? [pid 368] close(3 [pid 366] <... exit_group resumed>) = ? [pid 372] <... futex resumed>) = 1 [pid 371] +++ exited with 0 +++ [pid 370] <... futex resumed>) = 0 [pid 368] <... close resumed>) = 0 [pid 366] +++ exited with 0 +++ [pid 372] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 370] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=366, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 372] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 370] <... futex resumed>) = 0 [pid 368] <... futex resumed>) = 0 [pid 372] sendfile(-1, 3, NULL, 2147483713 [pid 370] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 368] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 372] <... sendfile resumed>) = -1 EBADF (Bad file descriptor) [pid 368] <... mmap resumed>) = 0x7f39f9196000 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 372] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] mprotect(0x7f39f9197000, 131072, PROT_READ|PROT_WRITE [pid 307] <... openat resumed>) = 3 [pid 372] <... futex resumed>) = 1 [pid 370] <... futex resumed>) = 0 [pid 368] <... mprotect resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 372] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 370] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] clone(child_stack=0x7f39f91b62f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 307] <... ioctl resumed>) = 0 [pid 373] <... write resumed>) = 1048576 [pid 372] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 370] <... futex resumed>) = 0 [pid 307] close(3 [pid 373] munmap(0x7f39f0d96000, 1048576 [pid 372] creat("./file0", 0420 [pid 370] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory [pid 368] <... clone resumed>, parent_tid=[374], tls=0x7f39f91b6700, child_tidptr=0x7f39f91b69d0) = 374 [pid 307] <... close resumed>) = 0 [pid 373] <... munmap resumed>) = 0 [pid 372] <... creat resumed>) = 4 [pid 368] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 373] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 372] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] <... futex resumed>) = 0 [pid 373] <... openat resumed>) = 4 [pid 372] <... futex resumed>) = 1 [pid 370] <... futex resumed>) = 0 [pid 368] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 307] <... clone resumed>, child_tidptr=0x55555614e6d0) = 375 [pid 373] ioctl(4, LOOP_SET_FD, 3 [pid 372] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 370] write(1, "write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory\n", 90 [pid 373] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 370] <... write resumed>) = 90 [pid 373] ioctl(4, LOOP_CLR_FD [pid 370] exit_group(0 [pid 373] <... ioctl resumed>) = 0 [pid 372] <... futex resumed>) = ? [pid 370] <... exit_group resumed>) = ? [pid 372] +++ exited with 0 +++ [pid 370] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=370, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 373] ioctl(4, LOOP_SET_FD, 3 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 373] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 373] close(4 [pid 309] <... clone resumed>, child_tidptr=0x55555614e6d0) = 376 [pid 373] <... close resumed>) = 0 [pid 373] close(3) = 0 ./strace-static-x86_64: Process 374 attached [pid 374] set_robust_list(0x7f39f91b69e0, 24) = 0 [pid 374] memfd_create("syzkaller", 0) = 3 [pid 374] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f39f0d96000 [pid 373] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 375 attached ) = 1 [pid 367] <... futex resumed>) = 0 [pid 375] set_robust_list(0x55555614e6e0, 24 [pid 373] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 367] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 375] <... set_robust_list resumed>) = 0 [pid 373] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 367] <... futex resumed>) = 0 [pid 375] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 374] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 373] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOFOLLOW|O_NOATIME|0x29800030, 000 [pid 367] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 375] <... prctl resumed>) = 0 [pid 373] <... open resumed>) = -1 EISDIR (Is a directory) [pid 375] setpgid(0, 0 [pid 373] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 375] <... setpgid resumed>) = 0 [pid 373] <... futex resumed>) = 1 [pid 367] <... futex resumed>) = 0 [pid 375] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 373] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 367] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 375] <... openat resumed>) = 3 [pid 373] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 367] <... futex resumed>) = 0 [pid 375] write(3, "1000", 4 [pid 373] write(-1, "\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9 [pid 367] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 375] <... write resumed>) = 4 [pid 373] <... write resumed>) = -1 EBADF (Bad file descriptor) [pid 375] close(3 [pid 373] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 375] <... close resumed>) = 0 [pid 373] <... futex resumed>) = 1 [pid 367] <... futex resumed>) = 0 [pid 375] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 367] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 375] <... futex resumed>) = 0 [pid 373] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 367] <... futex resumed>) = 0 [pid 375] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 373] openat(AT_FDCWD, "./bus", O_RDONLY [pid 367] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 375] <... mmap resumed>) = 0x7f39f9196000 [pid 373] <... openat resumed>) = 3 [pid 375] mprotect(0x7f39f9197000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 373] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 375] clone(child_stack=0x7f39f91b62f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 373] <... futex resumed>) = 1 [pid 367] <... futex resumed>) = 0 [pid 373] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 367] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 375] <... clone resumed>, parent_tid=[377], tls=0x7f39f91b6700, child_tidptr=0x7f39f91b69d0) = 377 [pid 373] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 367] <... futex resumed>) = 0 [pid 375] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] open("./bus", O_RDWR [pid 367] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 375] <... futex resumed>) = 0 [pid 373] <... open resumed>) = -1 EISDIR (Is a directory) [pid 375] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 373] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 367] <... futex resumed>) = 0 [pid 373] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 367] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 367] <... futex resumed>) = 0 [pid 373] mmap(0x20000000, 6291456, PROT_WRITE|PROT_EXEC|PROT_SEM|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 367] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 373] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 373] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 367] <... futex resumed>) = 0 [pid 373] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 367] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 367] <... futex resumed>) = 0 [pid 373] sendfile(-1, 3, NULL, 2147483713 [pid 367] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory [pid 373] <... sendfile resumed>) = -1 EBADF (Bad file descriptor) [pid 373] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 367] <... futex resumed>) = 0 [pid 373] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 367] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 367] <... futex resumed>) = 0 [pid 373] creat("./file0", 0420 [pid 367] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 373] <... creat resumed>) = 4 [pid 373] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 367] <... futex resumed>) = 0 [pid 373] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 367] write(1, "write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory\n", 90) = 90 [pid 367] exit_group(0 [pid 373] <... futex resumed>) = ? [pid 367] <... exit_group resumed>) = ? [pid 373] +++ exited with 0 +++ [pid 367] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=367, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- ./strace-static-x86_64: Process 377 attached [pid 377] set_robust_list(0x7f39f91b69e0, 24 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 377] <... set_robust_list resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 377] memfd_create("syzkaller", 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 377] <... memfd_create resumed>) = 3 [pid 306] <... ioctl resumed>) = 0 [pid 377] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 306] close(3 [pid 377] <... mmap resumed>) = 0x7f39f0d96000 [pid 306] <... close resumed>) = 0 [pid 377] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 374] <... write resumed>) = 1048576 [pid 306] <... clone resumed>, child_tidptr=0x55555614e6d0) = 378 ./strace-static-x86_64: Process 369 attached [pid 369] set_robust_list(0x55555614e6e0, 24) = 0 [pid 369] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 369] setpgid(0, 0) = 0 [pid 369] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 369] write(3, "1000", 4) = 4 [pid 369] close(3) = 0 [pid 369] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 369] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f39f9196000 [pid 369] mprotect(0x7f39f9197000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 369] clone(child_stack=0x7f39f91b62f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[379], tls=0x7f39f91b6700, child_tidptr=0x7f39f91b69d0) = 379 [pid 369] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 369] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 374] munmap(0x7f39f0d96000, 1048576) = 0 [pid 374] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 374] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 374] ioctl(4, LOOP_CLR_FD./strace-static-x86_64: Process 379 attached ./strace-static-x86_64: Process 378 attached ./strace-static-x86_64: Process 376 attached [pid 377] <... write resumed>) = 1048576 [pid 374] <... ioctl resumed>) = 0 [pid 379] set_robust_list(0x7f39f91b69e0, 24) = 0 [pid 379] memfd_create("syzkaller", 0) = 3 [pid 379] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f39f0d96000 [pid 374] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 374] close(4) = 0 [pid 374] close(3) = 0 [pid 374] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] <... futex resumed>) = 0 [pid 368] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 368] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 374] <... futex resumed>) = 1 [pid 374] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOFOLLOW|O_NOATIME|0x29800030, 000) = -1 EISDIR (Is a directory) [pid 374] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] <... futex resumed>) = 0 [pid 368] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 368] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 374] <... futex resumed>) = 1 [pid 374] write(-1, "\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9) = -1 EBADF (Bad file descriptor) [pid 374] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] <... futex resumed>) = 0 [pid 368] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 368] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 374] <... futex resumed>) = 1 [pid 374] openat(AT_FDCWD, "./bus", O_RDONLY) = 3 [pid 374] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] <... futex resumed>) = 0 [pid 368] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 368] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 374] <... futex resumed>) = 1 [pid 374] open("./bus", O_RDWR) = -1 EISDIR (Is a directory) [pid 374] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 368] <... futex resumed>) = 0 [pid 374] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 368] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 374] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 368] <... futex resumed>) = 0 [pid 374] mmap(0x20000000, 6291456, PROT_WRITE|PROT_EXEC|PROT_SEM|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 368] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 374] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 374] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 368] <... futex resumed>) = 0 [pid 379] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 374] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 368] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 374] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 368] <... futex resumed>) = 0 [pid 374] sendfile(-1, 3, NULL, 2147483713 [pid 368] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 374] <... sendfile resumed>) = -1 EBADF (Bad file descriptor) [pid 374] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 368] <... futex resumed>) = 0 [pid 374] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 368] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 374] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 368] <... futex resumed>) = 0 [pid 374] creat("./file0", 0420 [pid 368] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 374] <... creat resumed>) = 4 [pid 374] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 378] set_robust_list(0x55555614e6e0, 24write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory [pid 377] munmap(0x7f39f0d96000, 1048576 [pid 376] set_robust_list(0x55555614e6e0, 24 [pid 374] <... futex resumed>) = 1 [pid 368] <... futex resumed>) = 0 [pid 378] <... set_robust_list resumed>) = 0 [pid 377] <... munmap resumed>) = 0 [pid 376] <... set_robust_list resumed>) = 0 [pid 374] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 368] write(1, "write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory\n", 90 [pid 378] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 377] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 376] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 368] <... write resumed>) = 90 [pid 378] <... prctl resumed>) = 0 [pid 377] <... openat resumed>) = 4 [pid 376] <... prctl resumed>) = 0 [pid 368] exit_group(0 [pid 378] setpgid(0, 0 [pid 377] ioctl(4, LOOP_SET_FD, 3 [pid 376] setpgid(0, 0 [pid 374] <... futex resumed>) = ? [pid 368] <... exit_group resumed>) = ? [pid 378] <... setpgid resumed>) = 0 [pid 377] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 376] <... setpgid resumed>) = 0 [pid 374] +++ exited with 0 +++ [pid 368] +++ exited with 0 +++ [pid 378] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 377] ioctl(4, LOOP_CLR_FD [pid 376] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=368, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 378] <... openat resumed>) = 3 [pid 377] <... ioctl resumed>) = 0 [pid 376] <... openat resumed>) = 3 [pid 378] write(3, "1000", 4 [pid 376] write(3, "1000", 4 [pid 378] <... write resumed>) = 4 [pid 376] <... write resumed>) = 4 [pid 310] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 378] close(3 [pid 377] ioctl(4, LOOP_SET_FD, 3 [pid 376] close(3 [pid 310] <... openat resumed>) = 3 [pid 378] <... close resumed>) = 0 [pid 377] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 376] <... close resumed>) = 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 378] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 377] close(4 [pid 376] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 310] <... ioctl resumed>) = 0 [pid 378] <... futex resumed>) = 0 [pid 377] <... close resumed>) = 0 [pid 376] <... futex resumed>) = 0 [pid 310] close(3 [pid 378] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 377] close(3 [pid 376] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 310] <... close resumed>) = 0 [pid 378] <... mmap resumed>) = 0x7f39f9196000 [pid 377] <... close resumed>) = 0 [pid 376] <... mmap resumed>) = 0x7f39f9196000 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 379] <... write resumed>) = 1048576 [pid 378] mprotect(0x7f39f9197000, 131072, PROT_READ|PROT_WRITE [pid 376] mprotect(0x7f39f9197000, 131072, PROT_READ|PROT_WRITE [pid 378] <... mprotect resumed>) = 0 [pid 376] <... mprotect resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x55555614e6d0) = 380 [pid 378] clone(child_stack=0x7f39f91b62f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 376] clone(child_stack=0x7f39f91b62f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 377] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 378] <... clone resumed>, parent_tid=[381], tls=0x7f39f91b6700, child_tidptr=0x7f39f91b69d0) = 381 [pid 377] <... futex resumed>) = 1 [pid 376] <... clone resumed>, parent_tid=[382], tls=0x7f39f91b6700, child_tidptr=0x7f39f91b69d0) = 382 [pid 375] <... futex resumed>) = 0 [pid 378] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 377] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 376] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 375] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 378] <... futex resumed>) = 0 [pid 377] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 376] <... futex resumed>) = 0 [pid 375] <... futex resumed>) = 0 [pid 378] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 377] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOFOLLOW|O_NOATIME|0x29800030, 000 [pid 376] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 375] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 377] <... open resumed>) = -1 EISDIR (Is a directory) [pid 377] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 375] <... futex resumed>) = 0 [pid 377] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 375] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 377] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 375] <... futex resumed>) = 0 [pid 377] write(-1, "\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9 [pid 375] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 377] <... write resumed>) = -1 EBADF (Bad file descriptor) [pid 377] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 375] <... futex resumed>) = 0 [pid 377] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 375] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 377] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 375] <... futex resumed>) = 0 [pid 377] openat(AT_FDCWD, "./bus", O_RDONLY [pid 375] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 379] munmap(0x7f39f0d96000, 1048576 [pid 377] <... openat resumed>) = 3 [pid 379] <... munmap resumed>) = 0 [pid 377] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 379] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 377] <... futex resumed>) = 1 [pid 375] <... futex resumed>) = 0 [pid 379] <... openat resumed>) = 4 [pid 377] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 375] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 379] ioctl(4, LOOP_SET_FD, 3 [pid 377] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 375] <... futex resumed>) = 0 [pid 379] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 377] open("./bus", O_RDWR [pid 375] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 379] ioctl(4, LOOP_CLR_FD [pid 377] <... open resumed>) = -1 EISDIR (Is a directory) [pid 379] <... ioctl resumed>) = 0 [pid 377] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 375] <... futex resumed>) = 0 [pid 377] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 375] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory [pid 377] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 375] <... futex resumed>) = 0 [pid 377] mmap(0x20000000, 6291456, PROT_WRITE|PROT_EXEC|PROT_SEM|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 375] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 379] ioctl(4, LOOP_SET_FD, 3 [pid 377] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 379] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 377] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 379] close(4 [pid 377] <... futex resumed>) = 1 [pid 375] <... futex resumed>) = 0 [pid 379] <... close resumed>) = 0 [pid 377] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 375] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 379] close(3 [pid 377] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 375] <... futex resumed>) = 0 [pid 379] <... close resumed>) = 0 [pid 377] sendfile(-1, 3, NULL, 2147483713 [pid 375] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 377] <... sendfile resumed>) = -1 EBADF (Bad file descriptor) [pid 377] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 375] <... futex resumed>) = 0 [pid 377] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 375] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 377] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 375] <... futex resumed>) = 0 [pid 377] creat("./file0", 0420 [pid 375] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 377] <... creat resumed>) = 4 [pid 377] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 375] <... futex resumed>) = 0 [pid 377] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 375] write(1, "write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory\n", 90) = 90 [pid 379] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 375] exit_group(0 [pid 379] <... futex resumed>) = 1 [pid 377] <... futex resumed>) = ? [pid 375] <... exit_group resumed>) = ? [pid 369] <... futex resumed>) = 0 [pid 379] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 377] +++ exited with 0 +++ [pid 375] +++ exited with 0 +++ [pid 369] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 379] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 369] <... futex resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=375, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 379] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOFOLLOW|O_NOATIME|0x29800030, 000 [pid 369] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 379] <... open resumed>) = -1 EISDIR (Is a directory) [pid 379] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 379] <... futex resumed>) = 1 [pid 369] <... futex resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 379] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 369] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] ioctl(3, LOOP_CLR_FD [pid 379] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 369] <... futex resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 379] write(-1, "\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory [pid 369] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 307] close(3 [pid 379] <... write resumed>) = -1 EBADF (Bad file descriptor) [pid 307] <... close resumed>) = 0 [pid 379] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 379] <... futex resumed>) = 1 [pid 369] <... futex resumed>) = 0 [pid 379] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 369] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] <... clone resumed>, child_tidptr=0x55555614e6d0) = 383 [pid 379] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 369] <... futex resumed>) = 0 [pid 379] openat(AT_FDCWD, "./bus", O_RDONLY [pid 369] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 379] <... openat resumed>) = 3 [pid 379] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 369] <... futex resumed>) = 0 [pid 379] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 369] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 379] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 369] <... futex resumed>) = 0 [pid 379] open("./bus", O_RDWR [pid 369] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 379] <... open resumed>) = -1 EISDIR (Is a directory) [pid 379] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 369] <... futex resumed>) = 0 [pid 379] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 369] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 379] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 369] <... futex resumed>) = 0 [pid 379] mmap(0x20000000, 6291456, PROT_WRITE|PROT_EXEC|PROT_SEM|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 369] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 379] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 379] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 369] <... futex resumed>) = 0 [pid 379] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 369] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 379] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 369] <... futex resumed>) = 0 [pid 379] sendfile(-1, 3, NULL, 2147483713 [pid 369] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 379] <... sendfile resumed>) = -1 EBADF (Bad file descriptor) [pid 379] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 369] <... futex resumed>) = 0 [pid 379] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 369] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 379] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 369] <... futex resumed>) = 0 [pid 379] creat("./file0", 0420 [pid 369] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 379] <... creat resumed>) = 4 [pid 379] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 369] <... futex resumed>) = 0 [pid 379] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 369] write(1, "write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory\n", 90) = 90 [pid 369] exit_group(0 [pid 379] <... futex resumed>) = ? [pid 369] <... exit_group resumed>) = ? [pid 379] +++ exited with 0 +++ [pid 369] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=369, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 383 attached [pid 383] set_robust_list(0x55555614e6e0, 24) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 383] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 311] <... openat resumed>) = 3 [pid 383] <... prctl resumed>) = 0 [pid 311] ioctl(3, LOOP_CLR_FD [pid 383] setpgid(0, 0 [pid 311] <... ioctl resumed>) = 0 [pid 383] <... setpgid resumed>) = 0 [pid 311] close(3 [pid 383] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 311] <... close resumed>) = 0 [pid 383] <... openat resumed>) = 3 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 383] write(3, "1000", 4) = 4 [pid 311] <... clone resumed>, child_tidptr=0x55555614e6d0) = 384 [pid 383] close(3) = 0 [pid 383] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 383] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f39f9196000 [pid 383] mprotect(0x7f39f9197000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 383] clone(child_stack=0x7f39f91b62f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[385], tls=0x7f39f91b6700, child_tidptr=0x7f39f91b69d0) = 385 [pid 383] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 383] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 385 attached [pid 385] set_robust_list(0x7f39f91b69e0, 24) = 0 [pid 385] memfd_create("syzkaller", 0./strace-static-x86_64: Process 384 attached ) = 3 [pid 384] set_robust_list(0x55555614e6e0, 24 [pid 385] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 384] <... set_robust_list resumed>) = 0 [pid 385] <... mmap resumed>) = 0x7f39f0d96000 [pid 384] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 384] setpgid(0, 0) = 0 [pid 384] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 384] write(3, "1000", 4) = 4 [pid 384] close(3) = 0 [pid 384] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 384] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f39f9196000 [pid 384] mprotect(0x7f39f9197000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 384] clone(child_stack=0x7f39f91b62f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[386], tls=0x7f39f91b6700, child_tidptr=0x7f39f91b69d0) = 386 [pid 384] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 384] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 385] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576./strace-static-x86_64: Process 386 attached [pid 386] set_robust_list(0x7f39f91b69e0, 24) = 0 [pid 386] memfd_create("syzkaller", 0) = 3 [pid 386] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f39f0d96000 ./strace-static-x86_64: Process 380 attached [pid 380] set_robust_list(0x55555614e6e0, 24) = 0 [pid 380] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 380] setpgid(0, 0) = 0 [pid 380] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 380] write(3, "1000", 4) = 4 [pid 380] close(3) = 0 [pid 380] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 380] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f39f9196000 [pid 380] mprotect(0x7f39f9197000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 380] clone(child_stack=0x7f39f91b62f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[387], tls=0x7f39f91b6700, child_tidptr=0x7f39f91b69d0) = 387 [pid 380] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 380] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 385] <... write resumed>) = 1048576 [pid 385] munmap(0x7f39f0d96000, 1048576) = 0 [pid 385] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 385] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 385] ioctl(4, LOOP_CLR_FD) = 0 [pid 385] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 385] close(4) = 0 [pid 385] close(3 [pid 386] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576./strace-static-x86_64: Process 387 attached [pid 387] set_robust_list(0x7f39f91b69e0, 24) = 0 [pid 387] memfd_create("syzkaller", 0) = 3 [pid 387] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f39f0d96000 [pid 385] <... close resumed>) = 0 [pid 385] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 383] <... futex resumed>) = 0 [pid 383] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 383] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 385] <... futex resumed>) = 1 [pid 385] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOFOLLOW|O_NOATIME|0x29800030, 000) = -1 EISDIR (Is a directory) [pid 385] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 383] <... futex resumed>) = 0 [pid 383] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 383] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 385] <... futex resumed>) = 1 [pid 385] write(-1, "\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9) = -1 EBADF (Bad file descriptor) [pid 385] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 383] <... futex resumed>) = 0 [pid 383] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 383] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 385] <... futex resumed>) = 1 [pid 385] openat(AT_FDCWD, "./bus", O_RDONLY) = 3 [pid 385] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 383] <... futex resumed>) = 0 [pid 383] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 383] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 385] <... futex resumed>) = 1 [pid 385] open("./bus", O_RDWR) = -1 EISDIR (Is a directory) [pid 385] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 383] <... futex resumed>) = 0 [pid 383] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 382 attached ./strace-static-x86_64: Process 381 attached ) = 0 [pid 383] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 382] set_robust_list(0x7f39f91b69e0, 24 [pid 381] set_robust_list(0x7f39f91b69e0, 24 [pid 382] <... set_robust_list resumed>) = 0 [pid 381] <... set_robust_list resumed>) = 0 [pid 385] <... futex resumed>) = 1 [pid 382] memfd_create("syzkaller", 0 [pid 385] mmap(0x20000000, 6291456, PROT_WRITE|PROT_EXEC|PROT_SEM|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 382] <... memfd_create resumed>) = 3 [pid 381] memfd_create("syzkaller", 0 [pid 382] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 385] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 382] <... mmap resumed>) = 0x7f39f0d96000 [pid 381] <... memfd_create resumed>) = 3 [pid 385] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 383] <... futex resumed>) = 0 [pid 385] sendfile(-1, 3, NULL, 2147483713 [pid 383] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 386] <... write resumed>) = 1048576 [pid 385] <... sendfile resumed>) = -1 EBADF (Bad file descriptor) [pid 383] <... futex resumed>) = 0 [pid 385] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 383] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 385] <... futex resumed>) = 0 [pid 383] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 385] creat("./file0", 0420 [pid 383] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 385] <... creat resumed>) = 4 [pid 383] <... futex resumed>) = 0 [pid 385] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 383] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 385] <... futex resumed>) = 0 [pid 383] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory [pid 385] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 383] write(1, "write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory\n", 90) = 90 [ 27.498608][ T356] RSP: 002b:00007f39f0e95208 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 27.507021][ T356] RAX: ffffffffffffffda RBX: 00007f39f928f6d8 RCX: 00007f39f9211f09 [ 27.514984][ T356] RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004 [ 27.522996][ T356] RBP: 00007f39f928f6d0 R08: 00007f39f0e95700 R09: 0000000000000000 [ 27.530959][ T356] R10: 0000000080000041 R11: 0000000000000246 R12: 00007f39f928f6dc [ 27.538919][ T356] R13: 00007ffd91646edf R14: 00007f39f0e95300 R15: 0000000000022000 [ 27.547241][ T356] Modules linked in: [pid 383] exit_group(0 [pid 385] <... futex resumed>) = ? [pid 383] <... exit_group resumed>) = ? [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"..., 1048576 [pid 381] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 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"..., 1048576 [pid 385] +++ exited with 0 +++ [pid 383] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=383, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 386] munmap(0x7f39f0d96000, 1048576) = 0 [pid 386] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 307] <... restart_syscall resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 386] <... openat resumed>) = 4 [pid 307] <... openat resumed>) = 3 [pid 386] ioctl(4, LOOP_SET_FD, 3 [pid 307] ioctl(3, LOOP_CLR_FD [pid 386] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] <... ioctl resumed>) = 0 [pid 386] ioctl(4, LOOP_CLR_FD [pid 307] close(3 [pid 386] <... ioctl resumed>) = 0 [pid 382] <... write resumed>) = 1048576 [pid 381] <... mmap resumed>) = 0x7f39f0d96000 [pid 307] <... close resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555614e6d0) = 388 [pid 386] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 386] close(4 [pid 387] <... write resumed>) = 1048576 [pid 386] <... close resumed>) = 0 [pid 382] munmap(0x7f39f0d96000, 1048576 [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"..., 1048576 [pid 386] close(3) = 0 [pid 386] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] <... futex resumed>) = 0 [pid 384] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 384] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 386] <... futex resumed>) = 1 [pid 386] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOFOLLOW|O_NOATIME|0x29800030, 000) = -1 EISDIR (Is a directory) [pid 386] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] <... futex resumed>) = 0 [pid 384] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 384] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 386] <... futex resumed>) = 1 [pid 386] write(-1, "\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9) = -1 EBADF (Bad file descriptor) [pid 386] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] <... futex resumed>) = 0 [pid 384] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 384] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 386] <... futex resumed>) = 1 [pid 386] openat(AT_FDCWD, "./bus", O_RDONLY) = 3 [pid 386] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 384] <... futex resumed>) = 0 [pid 386] open("./bus", O_RDWR [pid 384] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 388 attached [pid 386] <... open resumed>) = -1 EISDIR (Is a directory) [pid 384] <... futex resumed>) = 0 [pid 388] set_robust_list(0x55555614e6e0, 24 [pid 386] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 388] <... set_robust_list resumed>) = 0 [pid 386] <... futex resumed>) = 0 [pid 384] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 388] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 386] mmap(0x20000000, 6291456, PROT_WRITE|PROT_EXEC|PROT_SEM|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 384] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 388] <... prctl resumed>) = 0 [pid 386] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 384] <... futex resumed>) = 0 [pid 388] setpgid(0, 0 [pid 386] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 388] <... setpgid resumed>) = 0 [pid 386] <... futex resumed>) = 0 [pid 384] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 388] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 386] sendfile(-1, 3, NULL, 2147483713 [pid 384] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 388] <... openat resumed>) = 3 [pid 386] <... sendfile resumed>) = -1 EBADF (Bad file descriptor) [pid 384] <... futex resumed>) = 0 [pid 388] write(3, "1000", 4 [pid 386] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 388] <... write resumed>) = 4 [pid 386] <... futex resumed>) = 0 [pid 384] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 388] close(3 [pid 386] creat("./file0", 0420 [pid 384] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 388] <... close resumed>) = 0 [pid 386] <... creat resumed>) = 4 [pid 384] <... futex resumed>) = 0 [pid 388] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 386] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 388] <... futex resumed>) = 0 [pid 386] <... futex resumed>) = 0 [pid 384] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 388] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 386] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory [pid 384] write(1, "write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory\n", 90 [pid 388] <... mmap resumed>) = 0x7f39f9196000 [pid 384] <... write resumed>) = 90 [pid 388] mprotect(0x7f39f9197000, 131072, PROT_READ|PROT_WRITE [pid 384] exit_group(0 [pid 388] <... mprotect resumed>) = 0 [pid 386] <... futex resumed>) = ? [pid 384] <... exit_group resumed>) = ? [pid 388] clone(child_stack=0x7f39f91b62f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 386] +++ exited with 0 +++ [pid 384] +++ exited with 0 +++ [pid 311] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=384, si_uid=0, si_status=0, si_utime=1, si_stime=1} --- [pid 388] <... clone resumed>, parent_tid=[389], tls=0x7f39f91b6700, child_tidptr=0x7f39f91b69d0) = 389 [pid 388] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 388] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 311] <... openat resumed>) = 3 [pid 311] ioctl(3, LOOP_CLR_FD) = 0 [pid 311] close(3 [pid 387] munmap(0x7f39f0d96000, 1048576 [pid 382] <... munmap resumed>) = 0 [pid 311] <... close resumed>) = 0 [pid 311] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555614e6d0) = 390 [pid 381] <... write resumed>) = 1048576 [pid 387] <... munmap resumed>) = 0 [pid 382] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 381] munmap(0x7f39f0d96000, 1048576./strace-static-x86_64: Process 390 attached [ 27.564568][ T356] ---[ end trace 0e6e59795538b507 ]--- [ 27.582503][ T356] RIP: 0010:ext4_writepages+0x3a2b/0x3a50 [ 27.592043][ T356] Code: 94 c3 40 0f 94 c6 31 ff e8 f2 9f a0 ff 84 db 75 2e e8 59 9d a0 ff 48 bb 00 00 00 00 00 fc ff df e9 a9 f6 ff ff e8 45 9d a0 ff <0f> 0b e8 3e 9d a0 ff 0f 0b e8 37 9d a0 ff e8 62 a5 3b ff eb a3 e8 [pid 390] set_robust_list(0x55555614e6e0, 24) = 0 [pid 390] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 390] setpgid(0, 0) = 0 [pid 390] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 390] write(3, "1000", 4) = 4 [pid 390] close(3) = 0 [pid 390] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 390] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f39f9196000 [pid 390] mprotect(0x7f39f9197000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 390] clone(child_stack=0x7f39f91b62f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[391], tls=0x7f39f91b6700, child_tidptr=0x7f39f91b69d0) = 391 [pid 390] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 390] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 389 attached [pid 389] set_robust_list(0x7f39f91b69e0, 24) = 0 [pid 389] memfd_create("syzkaller", 0) = 3 [pid 389] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 387] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 382] <... openat resumed>) = 4 [pid 381] <... munmap resumed>) = 0 [pid 389] <... mmap resumed>) = 0x7f39f0d96000 [pid 387] <... openat resumed>) = 4 [pid 382] ioctl(4, LOOP_SET_FD, 3 [pid 381] openat(AT_FDCWD, "/dev/loop1", O_RDWR./strace-static-x86_64: Process 391 attached [pid 391] set_robust_list(0x7f39f91b69e0, 24) = 0 [pid 391] memfd_create("syzkaller", 0) = 3 [pid 391] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 387] ioctl(4, LOOP_SET_FD, 3 [pid 382] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 381] <... openat resumed>) = 4 [pid 387] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 382] ioctl(4, LOOP_CLR_FD [pid 381] ioctl(4, LOOP_SET_FD, 3 [pid 391] <... mmap resumed>) = 0x7f39f0d96000 [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"..., 1048576 [pid 387] ioctl(4, LOOP_CLR_FD [pid 382] <... ioctl resumed>) = 0 [pid 381] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 391] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576 [pid 387] <... ioctl resumed>) = 0 [pid 381] ioctl(4, LOOP_CLR_FD [pid 389] <... write resumed>) = 1048576 [pid 389] munmap(0x7f39f0d96000, 1048576) = 0 [pid 389] openat(AT_FDCWD, "/dev/loop2", 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 389] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 389] close(4 [pid 381] <... ioctl resumed>) = 0 [pid 382] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 382] close(4 [pid 387] ioctl(4, LOOP_SET_FD, 3 [pid 382] <... close resumed>) = 0 [ 27.616592][ T356] RSP: 0018:ffff8881dbadeec0 EFLAGS: 00010293 [ 27.623559][ T356] RAX: ffffffff81c4a22b RBX: 0000010000000000 RCX: ffff8881dc021f80 [ 27.631989][ T356] RDX: 0000000000000000 RSI: 0000010000000000 RDI: 0000000000000000 [ 27.640522][ T356] RBP: ffff8881dbadf290 R08: ffffffff81c470f7 R09: ffffed103cc7300b [ 27.648754][ T356] R10: ffffed103cc7300b R11: 1ffff1103cc7300a R12: ffff8881e6398100 [pid 389] <... close resumed>) = 0 [pid 389] close(3 [pid 387] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 382] close(3) = 0 [pid 382] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 376] <... futex resumed>) = 0 [pid 382] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 376] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 387] close(4 [pid 382] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 381] ioctl(4, LOOP_SET_FD, 3 [pid 376] <... futex resumed>) = 0 [pid 382] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOFOLLOW|O_NOATIME|0x29800030, 000 [pid 376] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 382] <... open resumed>) = -1 EISDIR (Is a directory) [pid 382] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 376] <... futex resumed>) = 0 [pid 382] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 376] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 376] <... futex resumed>) = 0 [pid 382] write(-1, "\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9 [pid 376] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 382] <... write resumed>) = -1 EBADF (Bad file descriptor) [pid 382] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 376] <... futex resumed>) = 0 [pid 382] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 376] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 376] <... futex resumed>) = 0 [pid 382] openat(AT_FDCWD, "./bus", O_RDONLY [pid 376] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 382] <... openat resumed>) = 3 [pid 382] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 376] <... futex resumed>) = 0 [pid 382] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 376] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 389] <... close resumed>) = 0 [pid 382] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 376] <... futex resumed>) = 0 [pid 382] open("./bus", O_RDWR [pid 376] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 387] <... close resumed>) = 0 [pid 382] <... open resumed>) = -1 EISDIR (Is a directory) [pid 381] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 391] <... write resumed>) = 1048576 [pid 389] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 389] <... futex resumed>) = 1 [pid 388] <... futex resumed>) = 0 [pid 387] close(3 [pid 382] <... futex resumed>) = 1 [pid 381] close(4 [pid 376] <... futex resumed>) = 0 [pid 391] munmap(0x7f39f0d96000, 1048576 [pid 389] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOFOLLOW|O_NOATIME|0x29800030, 000 [pid 388] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 376] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 391] <... munmap resumed>) = 0 [pid 389] <... open resumed>) = -1 EISDIR (Is a directory) [pid 388] <... futex resumed>) = 0 [pid 382] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 376] <... futex resumed>) = 0 [pid 391] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 389] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 388] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 382] mmap(0x20000000, 6291456, PROT_WRITE|PROT_EXEC|PROT_SEM|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [pid 376] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 391] <... openat resumed>) = 4 [pid 389] <... futex resumed>) = 0 [pid 388] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 382] <... mmap resumed>) = -1 EBADF (Bad file descriptor) [pid 391] ioctl(4, LOOP_SET_FD, 3 [pid 389] write(-1, "\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9 [pid 388] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 391] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 389] <... write resumed>) = -1 EBADF (Bad file descriptor) [pid 388] <... futex resumed>) = 0 [pid 382] <... futex resumed>) = 1 [pid 376] <... futex resumed>) = 0 [pid 391] ioctl(4, LOOP_CLR_FD [pid 389] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 388] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 382] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 376] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 391] <... ioctl resumed>) = 0 [pid 389] <... futex resumed>) = 0 [pid 388] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 382] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 376] <... futex resumed>) = 0 [pid 389] openat(AT_FDCWD, "./bus", O_RDONLY [pid 388] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] sendfile(-1, 3, NULL, 2147483713 [pid 376] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 389] <... openat resumed>) = 3 [pid 388] <... futex resumed>) = 0 [pid 382] <... sendfile resumed>) = -1 EBADF (Bad file descriptor) [pid 389] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 388] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 382] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 389] <... futex resumed>) = 0 [pid 388] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 382] <... futex resumed>) = 1 [pid 376] <... futex resumed>) = 0 [pid 389] open("./bus", O_RDWR [pid 388] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] futex(0x7f39f928f6c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 376] futex(0x7f39f928f6c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 389] <... open resumed>) = -1 EISDIR (Is a directory) [pid 388] <... futex resumed>) = 0 [pid 382] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 376] <... futex resumed>) = 0 [pid 391] ioctl(4, LOOP_SET_FD, 3 [pid 389] futex(0x7f39f928f6cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 388] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 382] creat("./file0", 0420 [pid 376] futex(0x7f39f928f6cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 391] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 389] <... futex resumed>) = 0 [pid 388] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 382] <... creat resumed>) = 4 [pid 391] close(4 [ 27.663466][ T356] R13: ffff8881dbadf400 R14: 0000011410000000 R15: 0000000000000001 [ 27.671792][ T356] FS: 00007f39f0e95700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 27.681103][ T356] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.688567][ T356] CR2: 00007f39f0e95000 CR3: 00000001dd08c000 CR4: 00000000003406f0 [ 27.696912][ T356] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.708311][ T356] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.721395][ T356] Kernel panic - not syncing: Fatal exception [ 27.727619][ T356] Kernel Offset: disabled [ 27.731934][ T356] Rebooting in 86400 seconds..