./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2586644612 <...> Warning: Permanently added '10.128.10.11' (ED25519) to the list of known hosts. execve("./syz-executor2586644612", ["./syz-executor2586644612"], 0x7ffcd0abb2d0 /* 10 vars */) = 0 brk(NULL) = 0x555582341000 brk(0x555582341d00) = 0x555582341d00 arch_prctl(ARCH_SET_FS, 0x555582341380) = 0 set_tid_address(0x555582341650) = 5869 set_robust_list(0x555582341660, 24) = 0 rseq(0x555582341ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2586644612", 4096) = 28 getrandom("\x3c\xe4\xd8\x04\x60\xa0\x1a\x89", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555582341d00 brk(0x555582362d00) = 0x555582362d00 brk(0x555582363000) = 0x555582363000 mprotect(0x7f034b88e000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555582341650) = 5870 ./strace-static-x86_64: Process 5870 attached [pid 5869] openat(AT_FDCWD, "/sys/kernel/debug/x86/nmi_longest_ns", O_WRONLY|O_CLOEXEC [pid 5870] set_robust_list(0x555582341660, 24) = 0 [pid 5869] <... openat resumed>) = 3 [pid 5869] write(3, "10000000000", 11) = 11 [pid 5869] close(3) = 0 [pid 5869] openat(AT_FDCWD, "/proc/sys/kernel/hung_task_check_interval_secs", O_WRONLY|O_CLOEXEC) = 3 [pid 5869] write(3, "20", 2) = 2 [pid 5869] close(3) = 0 [pid 5869] openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_kallsyms", O_WRONLY|O_CLOEXEC) = 3 [pid 5869] write(3, "1", 1) = 1 [pid 5869] close(3) = 0 [pid 5869] openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_harden", O_WRONLY|O_CLOEXEC) = 3 [pid 5869] write(3, "0", 1) = 1 [pid 5869] close(3) = 0 [pid 5869] openat(AT_FDCWD, "/proc/sys/kernel/kptr_restrict", O_WRONLY|O_CLOEXEC) = 3 [pid 5869] write(3, "0", 1) = 1 [pid 5869] close(3) = 0 [pid 5869] openat(AT_FDCWD, "/proc/sys/kernel/softlockup_all_cpu_backtrace", O_WRONLY|O_CLOEXEC) = 3 [pid 5869] write(3, "1", 1) = 1 [pid 5869] close(3) = 0 [pid 5869] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3 [pid 5869] write(3, "100", 3) = 3 [pid 5869] close(3) = 0 [pid 5869] openat(AT_FDCWD, "/proc/sys/vm/oom_dump_tasks", O_WRONLY|O_CLOEXEC) = 3 [pid 5869] write(3, "0", 1) = 1 [pid 5869] close(3) = 0 [pid 5869] openat(AT_FDCWD, "/proc/sys/debug/exception-trace", O_WRONLY|O_CLOEXEC) = 3 [pid 5869] write(3, "0", 1) = 1 [pid 5869] close(3) = 0 [pid 5869] openat(AT_FDCWD, "/proc/sys/kernel/printk", O_WRONLY|O_CLOEXEC) = 3 [pid 5869] write(3, "7 4 1 3", 7) = 7 [pid 5869] close(3) = 0 [pid 5869] openat(AT_FDCWD, "/proc/sys/kernel/keys/gc_delay", O_WRONLY|O_CLOEXEC) = 3 [pid 5869] write(3, "1", 1) = 1 [pid 5869] close(3) = 0 [pid 5869] openat(AT_FDCWD, "/proc/sys/vm/oom_kill_allocating_task", O_WRONLY|O_CLOEXEC) = 3 [pid 5869] write(3, "1", 1) = 1 [pid 5869] close(3) = 0 [pid 5869] openat(AT_FDCWD, "/proc/sys/kernel/ctrl-alt-del", O_WRONLY|O_CLOEXEC) = 3 [pid 5869] write(3, "0", 1) = 1 [pid 5869] close(3) = 0 [pid 5869] openat(AT_FDCWD, "/proc/sys/kernel/cad_pid", O_WRONLY|O_CLOEXEC) = 3 [pid 5869] write(3, "5870", 4) = 4 [pid 5869] close(3) = 0 [pid 5869] kill(5870, SIGKILL) = 0 [pid 5870] +++ killed by SIGKILL +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5870, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- mkdir("./syzkaller.WvZqYZ", 0700) = 0 chmod("./syzkaller.WvZqYZ", 0777) = 0 chdir("./syzkaller.WvZqYZ") = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5871 attached [pid 5871] set_robust_list(0x555582341660, 24 [pid 5869] <... clone resumed>, child_tidptr=0x555582341650) = 5871 [pid 5871] <... set_robust_list resumed>) = 0 [pid 5871] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5871] getppid() = 0 [pid 5871] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5871] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5871] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5871] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5871] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5871] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5871] unshare(CLONE_NEWNS) = 0 [pid 5871] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5871] unshare(CLONE_NEWIPC) = 0 [pid 5871] unshare(CLONE_NEWCGROUP) = 0 [pid 5871] unshare(CLONE_NEWUTS) = 0 [pid 5871] unshare(CLONE_SYSVSEM) = 0 [pid 5871] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5871] write(3, "16777216", 8) = 8 [pid 5871] close(3) = 0 [pid 5871] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5871] write(3, "536870912", 9) = 9 [pid 5871] close(3) = 0 [pid 5871] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5871] write(3, "1024", 4) = 4 [pid 5871] close(3) = 0 [pid 5871] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5871] write(3, "8192", 4) = 4 [pid 5871] close(3) = 0 [pid 5871] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5871] write(3, "1024", 4) = 4 [pid 5871] close(3) = 0 [pid 5871] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5871] write(3, "1024", 4) = 4 [pid 5871] close(3) = 0 [pid 5871] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5871] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5871] close(3) = 0 [pid 5871] getpid() = 1 [pid 5871] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<) = 0 [pid 5871] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5871] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5871] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=60, ...}, AT_EMPTY_PATH) = 0 [pid 5871] getdents64(3, 0x5555823426f0 /* 3 entries */, 32768) = 80 [pid 5871] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5871] newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5871] unlink("./0/binderfs") = 0 [pid 5871] getdents64(3, 0x5555823426f0 /* 0 entries */, 32768) = 0 [pid 5871] close(3) = 0 [pid 5871] rmdir("./0") = 0 [pid 5871] mkdir("./1", 0777) = 0 [pid 5871] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5888 attached [pid 5888] set_robust_list(0x555582341660, 24) = 0 [pid 5871] <... clone resumed>, child_tidptr=0x555582341650) = 3 [pid 5888] chdir("./1") = 0 [pid 5888] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5888] setpgid(0, 0) = 0 [pid 5888] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5888] write(3, "1000", 4) = 4 [pid 5888] close(3) = 0 [pid 5888] read(200, 0x7ffda3bbc9c0, 1000) = -1 EAGAIN (Resource temporarily unavailable) [pid 5888] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5888] write(1, "executing program\n", 18executing program ) = 18 [pid 5888] socket(AF_NETLINK, SOCK_RAW, NETLINK_NETFILTER) = 3 [pid 5888] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x14\x00\x00\x00\x10\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0a\x20\x00\x00\x00\x00\x0a\x01\x03\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\xff\xfd\x09\x00\x01\x00\x73\x79\x7a\x30\x00\x00\x00\x00\x40\x00\x00\x00\x03\x0a\x01\x02\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x09\x00\x03\x00\x73\x79\x7a\x32\x00\x00\x00\x00\x14\x00\x04\x80\x08\x00\x02\x40\x32\x65\x8a\xeb\x08\x00\x01\x40"..., iov_len=204}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 204 [pid 5888] write(200, "\x01\x80\xc2\x00\x00\x02\x01\x80\xc2\x00\x00\x00\x08\x00\x45\x00\x00\x34\x00\x00\x00\x00\x00\x06\xba\xc5\x00\x00\x00\x00\x00\x00\x00\x00\x00\x10\x4e\x26\x44\x43\x42\x41\x44\x43\x42\x41\x80\xc2\x00\x01\x24\x2f\x00\x00\xfe\x02\x09\x02\xfe\x04\xf9\x89\x02\x04\xff\x0f", 66) = 66 [pid 5888] close(3) = 0 [pid 5888] close(4) = -1 EBADF (Bad file descriptor) [pid 5888] close(5) = -1 EBADF (Bad file descriptor) [pid 5888] close(6) = -1 EBADF (Bad file descriptor) [pid 5888] close(7) = -1 EBADF (Bad file descriptor) [pid 5888] close(8) = -1 EBADF (Bad file descriptor) [pid 5888] close(9) = -1 EBADF (Bad file descriptor) [pid 5888] close(10) = -1 EBADF (Bad file descriptor) [pid 5888] close(11) = -1 EBADF (Bad file descriptor) [pid 5888] close(12) = -1 EBADF (Bad file descriptor) [pid 5888] close(13) = -1 EBADF (Bad file descriptor) [pid 5888] close(14) = -1 EBADF (Bad file descriptor) [pid 5888] close(15) = -1 EBADF (Bad file descriptor) [pid 5888] close(16) = -1 EBADF (Bad file descriptor) [pid 5888] close(17) = -1 EBADF (Bad file descriptor) [pid 5888] close(18) = -1 EBADF (Bad file descriptor) [pid 5888] close(19) = -1 EBADF (Bad file descriptor) [pid 5888] close(20) = -1 EBADF (Bad file descriptor) [pid 5888] close(21) = -1 EBADF (Bad file descriptor) [pid 5888] close(22) = -1 EBADF (Bad file descriptor) [pid 5888] close(23) = -1 EBADF (Bad file descriptor) [pid 5888] close(24) = -1 EBADF (Bad file descriptor) [pid 5888] close(25) = -1 EBADF (Bad file descriptor) [pid 5888] close(26) = -1 EBADF (Bad file descriptor) [pid 5888] close(27) = -1 EBADF (Bad file descriptor) [pid 5888] close(28) = -1 EBADF (Bad file descriptor) [pid 5888] close(29) = -1 EBADF (Bad file descriptor) [pid 5888] exit_group(0) = ? [pid 5888] +++ exited with 0 +++ [pid 5871] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5871] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5871] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5871] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=60, ...}, AT_EMPTY_PATH) = 0 [pid 5871] getdents64(3, 0x5555823426f0 /* 3 entries */, 32768) = 80 [pid 5871] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5871] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5871] unlink("./1/binderfs") = 0 [pid 5871] getdents64(3, 0x5555823426f0 /* 0 entries */, 32768) = 0 [pid 5871] close(3) = 0 [pid 5871] rmdir("./1") = 0 [pid 5871] mkdir("./2", 0777) = 0 [pid 5871] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555582341650) = 4 executing program ./strace-static-x86_64: Process 5889 attached [pid 5889] set_robust_list(0x555582341660, 24) = 0 [pid 5889] chdir("./2") = 0 [pid 5889] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5889] setpgid(0, 0) = 0 [pid 5889] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5889] write(3, "1000", 4) = 4 [pid 5889] close(3) = 0 [pid 5889] read(200, 0x7ffda3bbc9c0, 1000) = -1 EAGAIN (Resource temporarily unavailable) [pid 5889] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5889] write(1, "executing program\n", 18) = 18 [pid 5889] socket(AF_NETLINK, SOCK_RAW, NETLINK_NETFILTER) = 3 [pid 5889] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x14\x00\x00\x00\x10\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0a\x20\x00\x00\x00\x00\x0a\x01\x03\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\xff\xfd\x09\x00\x01\x00\x73\x79\x7a\x30\x00\x00\x00\x00\x40\x00\x00\x00\x03\x0a\x01\x02\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x09\x00\x03\x00\x73\x79\x7a\x32\x00\x00\x00\x00\x14\x00\x04\x80\x08\x00\x02\x40\x32\x65\x8a\xeb\x08\x00\x01\x40"..., iov_len=204}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 204 [pid 5889] write(200, "\x01\x80\xc2\x00\x00\x02\x01\x80\xc2\x00\x00\x00\x08\x00\x45\x00\x00\x34\x00\x00\x00\x00\x00\x06\xba\xc5\x00\x00\x00\x00\x00\x00\x00\x00\x00\x10\x4e\x26\x44\x43\x42\x41\x44\x43\x42\x41\x80\xc2\x00\x01\x24\x2f\x00\x00\xfe\x02\x09\x02\xfe\x04\xf9\x89\x02\x04\xff\x0f", 66) = 66 [ 245.603968][ T5501] sched: DL replenish lagged too much [pid 5889] close(3) = 0 [pid 5889] close(4) = -1 EBADF (Bad file descriptor) [pid 5889] close(5) = -1 EBADF (Bad file descriptor) [pid 5889] close(6) = -1 EBADF (Bad file descriptor) [pid 5889] close(7) = -1 EBADF (Bad file descriptor) [pid 5889] close(8) = -1 EBADF (Bad file descriptor) [pid 5889] close(9) = -1 EBADF (Bad file descriptor) [pid 5889] close(10) = -1 EBADF (Bad file descriptor) [pid 5889] close(11) = -1 EBADF (Bad file descriptor) [pid 5889] close(12) = -1 EBADF (Bad file descriptor) [pid 5889] close(13) = -1 EBADF (Bad file descriptor) [pid 5889] close(14) = -1 EBADF (Bad file descriptor) [pid 5889] close(15) = -1 EBADF (Bad file descriptor) [pid 5889] close(16) = -1 EBADF (Bad file descriptor) [pid 5889] close(17) = -1 EBADF (Bad file descriptor) [pid 5889] close(18) = -1 EBADF (Bad file descriptor) [pid 5889] close(19) = -1 EBADF (Bad file descriptor) [pid 5889] close(20) = -1 EBADF (Bad file descriptor) [pid 5889] close(21) = -1 EBADF (Bad file descriptor) [pid 5889] close(22) = -1 EBADF (Bad file descriptor) [pid 5889] close(23) = -1 EBADF (Bad file descriptor) [pid 5889] close(24) = -1 EBADF (Bad file descriptor) [pid 5889] close(25) = -1 EBADF (Bad file descriptor) [pid 5889] close(26) = -1 EBADF (Bad file descriptor) [pid 5889] close(27) = -1 EBADF (Bad file descriptor) [pid 5889] close(28) = -1 EBADF (Bad file descriptor) [pid 5889] close(29) = -1 EBADF (Bad file descriptor) [pid 5889] exit_group(0) = ? [pid 5889] +++ exited with 0 +++ [pid 5871] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5871] umount2("./2", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5871] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5871] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=60, ...}, AT_EMPTY_PATH) = 0 [pid 5871] getdents64(3, 0x5555823426f0 /* 3 entries */, 32768) = 80 [pid 5871] umount2("./2/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5871] newfstatat(AT_FDCWD, "./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5871] unlink("./2/binderfs") = 0 [pid 5871] getdents64(3, 0x5555823426f0 /* 0 entries */, 32768) = 0 [pid 5871] close(3) = 0 [pid 5871] rmdir("./2") = 0 [pid 5871] mkdir("./3", 0777) = 0 [pid 5871] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555582341650) = 5 ./strace-static-x86_64: Process 5890 attached [pid 5890] set_robust_list(0x555582341660, 24) = 0 [pid 5890] chdir("./3") = 0 [pid 5890] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5890] setpgid(0, 0) = 0 [pid 5890] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5871] kill(-5, SIGKILL) = 0 [pid 5871] kill(5, SIGKILL) = 0 [pid 5890] <... openat resumed>) = ? [pid 5890] +++ killed by SIGKILL +++ [pid 5871] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5871] umount2("./3", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5871] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5871] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0 [pid 5871] getdents64(3, 0x5555823426f0 /* 2 entries */, 32768) = 48 [pid 5871] getdents64(3, 0x5555823426f0 /* 0 entries */, 32768) = 0 [pid 5871] close(3) = 0 [pid 5871] rmdir("./3") = 0 [pid 5871] mkdir("./4", 0777) = 0 [pid 5871] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555582341650) = 6 ./strace-static-x86_64: Process 5891 attached [pid 5891] set_robust_list(0x555582341660, 24) = 0 [pid 5891] chdir("./4") = 0 [pid 5891] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5891] setpgid(0, 0) = 0 [pid 5891] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5871] kill(-6, SIGKILL) = 0 [pid 5871] kill(6, SIGKILL) = 0 [pid 5891] <... openat resumed>) = ? [pid 5891] +++ killed by SIGKILL +++ [pid 5871] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=6, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5871] umount2("./4", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5871] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5871] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0 [pid 5871] getdents64(3, 0x5555823426f0 /* 2 entries */, 32768) = 48 [pid 5871] getdents64(3, 0x5555823426f0 /* 0 entries */, 32768) = 0 [pid 5871] close(3) = 0 [pid 5871] rmdir("./4") = 0 [pid 5871] mkdir("./5", 0777) = 0 [pid 5871] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555582341650) = 7 ./strace-static-x86_64: Process 5897 attached [pid 5897] set_robust_list(0x555582341660, 24) = 0 [pid 5897] chdir("./5") = 0 [pid 5897] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5897] setpgid(0, 0) = 0 [pid 5897] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5871] kill(-7, SIGKILL) = 0 [pid 5871] kill(7, SIGKILL) = 0 [pid 5897] <... openat resumed>) = ? [pid 5897] +++ killed by SIGKILL +++ [pid 5871] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=7, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5871] umount2("./5", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5871] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5871] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0 [pid 5871] getdents64(3, 0x5555823426f0 /* 2 entries */, 32768) = 48 [pid 5871] getdents64(3, 0x5555823426f0 /* 0 entries */, 32768) = 0 [pid 5871] close(3) = 0 [pid 5871] rmdir("./5") = 0 [pid 5871] mkdir("./6", 0777) = 0 [pid 5871] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555582341650) = 8 ./strace-static-x86_64: Process 5900 attached [pid 5900] set_robust_list(0x555582341660, 24) = 0 [pid 5900] chdir("./6") = 0 [pid 5900] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5900] setpgid(0, 0) = 0 [pid 5900] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5871] kill(-8, SIGKILL) = 0 [pid 5871] kill(8, SIGKILL) = 0 [ 452.092258][ T31] INFO: task kworker/0:1:10 blocked for more than 145 seconds. [ 453.973214][ T31] Not tainted 6.16.0-rc1-syzkaller-00003-gf09079bd04a9 #0 [pid 5871] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5900] <... openat resumed>) = ? [pid 5900] +++ killed by SIGKILL +++ [pid 5871] <... openat resumed>) = 3 [pid 5871] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=8, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=4 /* 0.04 s */} --- [ 457.823560][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 457.849362][ T31] task:kworker/0:1 state:D stack:25000 pid:10 tgid:10 ppid:2 task_flags:0x4208060 flags:0x00004000 [pid 5871] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0