./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor17382916 <...> Warning: Permanently added '10.128.1.102' (ED25519) to the list of known hosts. execve("./syz-executor17382916", ["./syz-executor17382916"], 0x7fff5dd46940 /* 10 vars */) = 0 brk(NULL) = 0x55558ca96000 brk(0x55558ca96d00) = 0x55558ca96d00 arch_prctl(ARCH_SET_FS, 0x55558ca96380) = 0 set_tid_address(0x55558ca96650) = 5890 set_robust_list(0x55558ca96660, 24) = 0 rseq(0x55558ca96ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor17382916", 4096) = 26 getrandom("\x0d\x7e\x72\x95\x89\xb6\x57\xba", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558ca96d00 brk(0x55558cab7d00) = 0x55558cab7d00 brk(0x55558cab8000) = 0x55558cab8000 mprotect(0x7fbb9b5e5000, 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 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5891 attached [pid 5891] set_robust_list(0x55558ca96660, 24 [pid 5890] <... clone resumed>, child_tidptr=0x55558ca96650) = 5891 [pid 5891] <... set_robust_list resumed>) = 0 [pid 5891] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5891] getppid() = 0 [pid 5891] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5891] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5891] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5891] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5891] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5891] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5891] unshare(CLONE_NEWNS) = 0 [pid 5891] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5891] unshare(CLONE_NEWIPC) = 0 [pid 5891] unshare(CLONE_NEWCGROUP) = 0 [pid 5891] unshare(CLONE_NEWUTS) = 0 [pid 5891] unshare(CLONE_SYSVSEM) = 0 [pid 5891] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5891] write(3, "16777216", 8) = 8 [pid 5891] close(3) = 0 [pid 5891] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5891] write(3, "536870912", 9) = 9 [pid 5891] close(3) = 0 [pid 5891] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5891] write(3, "1024", 4) = 4 [pid 5891] close(3) = 0 [pid 5891] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5891] write(3, "8192", 4) = 4 [pid 5891] close(3) = 0 [pid 5891] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5891] write(3, "1024", 4) = 4 [pid 5891] close(3) = 0 [pid 5891] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5891] write(3, "1024", 4) = 4 [pid 5891] close(3) = 0 [pid 5891] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5891] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5891] close(3) = 0 [pid 5891] getpid() = 1 [pid 5891] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 5906] set_robust_list(0x55558ca96660, 24 [pid 5891] <... clone resumed>, child_tidptr=0x55558ca96650) = 2 [pid 5906] <... set_robust_list resumed>) = 0 [pid 5906] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5906] setpgid(0, 0) = 0 [pid 5906] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5906] write(3, "1000", 4) = 4 [pid 5906] close(3) = 0 [pid 5906] read(200, "\x33\x33\x00\x00\x00\x16\xaa\xaa\xaa\xaa\xaa\xaa\x86\xdd\x60\x00\x00\x00\x00\x38\x00\x01\xfe\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xaa\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x16\x3a\x00\x05\x02\x00\x00\x01\x00\x8f\x00\xc2\x46\x00\x00\x00\x02\x04\x00\x00\x00\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\xaa\xaa\xaa\x04\x00\x00\x00\xff\x02\x00\x00\x00\x00"..., 1000) = 110 [pid 5906] read(200, "\x33\x33\x00\x00\x00\x16\xaa\xaa\xaa\xaa\xaa\xaa\x86\xdd\x60\x00\x00\x00\x00\x38\x00\x01\xfe\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xaa\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x16\x3a\x00\x05\x02\x00\x00\x01\x00\x8f\x00\xc2\x46\x00\x00\x00\x02\x04\x00\x00\x00\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\xaa\xaa\xaa\x04\x00\x00\x00\xff\x02\x00\x00\x00\x00"..., 1000) = 110 [pid 5906] read(200, 0x7ffd52d08b60, 1000) = -1 EAGAIN (Resource temporarily unavailable) [pid 5906] write(1, "executing program\n", 18executing program ) = 18 [pid 5906] socket(AF_NETLINK, SOCK_RAW, NETLINK_NETFILTER) = 3 [pid 5906] 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 5906] write(200, "\xaa\xaa\xaa\xaa\xaa\xaa\xff\xff\xff\xff\xff\xff\x08\x00\x45\xec\x00\x28\x00\x66\x00\x00\x00\x06\xb9\x7f\x00\x00\x00\x00\x00\x00\x00\x00\x4e\x20\x4e\x29\x44\x43\x42\x41\x44\x43\x42\x41\x50\x16\x00\x01\x06\x5c\x00\x20", 54) = 54 [pid 5906] close(3) = 0 [pid 5906] close(4) = -1 EBADF (Bad file descriptor) [pid 5906] close(5) = -1 EBADF (Bad file descriptor) [pid 5906] close(6) = -1 EBADF (Bad file descriptor) [pid 5906] close(7) = -1 EBADF (Bad file descriptor) [pid 5906] close(8) = -1 EBADF (Bad file descriptor) [pid 5906] close(9) = -1 EBADF (Bad file descriptor) [pid 5906] close(10) = -1 EBADF (Bad file descriptor) [pid 5906] close(11) = -1 EBADF (Bad file descriptor) [pid 5906] close(12) = -1 EBADF (Bad file descriptor) [pid 5906] close(13) = -1 EBADF (Bad file descriptor) [pid 5906] close(14) = -1 EBADF (Bad file descriptor) [pid 5906] close(15) = -1 EBADF (Bad file descriptor) [pid 5906] close(16) = -1 EBADF (Bad file descriptor) [pid 5906] close(17) = -1 EBADF (Bad file descriptor) [pid 5906] close(18) = -1 EBADF (Bad file descriptor) [pid 5906] close(19) = -1 EBADF (Bad file descriptor) [pid 5906] close(20) = -1 EBADF (Bad file descriptor) [pid 5906] close(21) = -1 EBADF (Bad file descriptor) [pid 5906] close(22) = -1 EBADF (Bad file descriptor) [pid 5906] close(23) = -1 EBADF (Bad file descriptor) [pid 5906] close(24) = -1 EBADF (Bad file descriptor) [pid 5906] close(25) = -1 EBADF (Bad file descriptor) [pid 5906] close(26) = -1 EBADF (Bad file descriptor) [pid 5906] close(27) = -1 EBADF (Bad file descriptor) [pid 5906] close(28) = -1 EBADF (Bad file descriptor) [pid 5906] close(29) = -1 EBADF (Bad file descriptor) [pid 5906] exit_group(0) = ? [pid 5906] +++ exited with 0 +++ [pid 5891] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5891] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5907 attached [pid 5907] set_robust_list(0x55558ca96660, 24) = 0 [pid 5907] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5891] <... clone resumed>, child_tidptr=0x55558ca96650) = 3 [pid 5907] setpgid(0, 0) = 0 [pid 5907] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5907] write(3, "1000", 4) = 4 [pid 5907] close(3) = 0 [pid 5907] read(200, executing program 0x7ffd52d08b60, 1000) = -1 EAGAIN (Resource temporarily unavailable) [pid 5907] write(1, "executing program\n", 18) = 18 [pid 5907] socket(AF_NETLINK, SOCK_RAW, NETLINK_NETFILTER) = 3 [pid 5907] 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 5907] write(200, "\xaa\xaa\xaa\xaa\xaa\xaa\xff\xff\xff\xff\xff\xff\x08\x00\x45\xec\x00\x28\x00\x66\x00\x00\x00\x06\xb9\x7f\x00\x00\x00\x00\x00\x00\x00\x00\x4e\x20\x4e\x29\x44\x43\x42\x41\x44\x43\x42\x41\x50\x16\x00\x01\x06\x5c\x00\x20", 54) = 54 [pid 5907] close(3) = 0 [pid 5907] close(4) = -1 EBADF (Bad file descriptor) [pid 5907] close(5) = -1 EBADF (Bad file descriptor) [pid 5907] close(6) = -1 EBADF (Bad file descriptor) [pid 5907] close(7) = -1 EBADF (Bad file descriptor) [pid 5907] close(8) = -1 EBADF (Bad file descriptor) [pid 5907] close(9) = -1 EBADF (Bad file descriptor) [pid 5907] close(10) = -1 EBADF (Bad file descriptor) [pid 5907] close(11) = -1 EBADF (Bad file descriptor) [pid 5907] close(12) = -1 EBADF (Bad file descriptor) [pid 5907] close(13) = -1 EBADF (Bad file descriptor) [pid 5907] close(14) = -1 EBADF (Bad file descriptor) [pid 5907] close(15) = -1 EBADF (Bad file descriptor) [pid 5907] close(16) = -1 EBADF (Bad file descriptor) [pid 5907] close(17) = -1 EBADF (Bad file descriptor) [pid 5907] close(18) = -1 EBADF (Bad file descriptor) [pid 5907] close(19) = -1 EBADF (Bad file descriptor) [pid 5907] close(20) = -1 EBADF (Bad file descriptor) [pid 5907] close(21) = -1 EBADF (Bad file descriptor) [pid 5907] close(22) = -1 EBADF (Bad file descriptor) [pid 5907] close(23) = -1 EBADF (Bad file descriptor) [pid 5907] close(24) = -1 EBADF (Bad file descriptor) [pid 5907] close(25) = -1 EBADF (Bad file descriptor) [pid 5907] close(26) = -1 EBADF (Bad file descriptor) [pid 5907] close(27) = -1 EBADF (Bad file descriptor) [pid 5907] close(28) = -1 EBADF (Bad file descriptor) [pid 5907] close(29) = -1 EBADF (Bad file descriptor) [pid 5907] exit_group(0) = ? [pid 5907] +++ exited with 0 +++ [pid 5891] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5891] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55558ca96650) = 4 ./strace-static-x86_64: Process 5908 attached [pid 5908] set_robust_list(0x55558ca96660, 24) = 0 [pid 5908] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5908] setpgid(0, 0) = 0 executing program [pid 5908] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5908] write(3, "1000", 4) = 4 [pid 5908] close(3) = 0 [pid 5908] read(200, 0x7ffd52d08b60, 1000) = -1 EAGAIN (Resource temporarily unavailable) [pid 5908] write(1, "executing program\n", 18) = 18 [pid 5908] socket(AF_NETLINK, SOCK_RAW, NETLINK_NETFILTER) = 3 [ 207.357486][ C0] sched: DL replenish lagged too much [pid 5908] 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 [pid 5891] kill(-4, SIGKILL) = 0 [pid 5891] kill(4, SIGKILL) = 0 [pid 5891] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5908] <... sendmsg resumed>) = ? [pid 5891] <... openat resumed>) = 3 [pid 5891] newfstatat(3, "", [pid 5908] +++ killed by SIGKILL +++ [pid 5891] <... newfstatat resumed>{st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5891] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=4, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5891] getdents64(3, 0x55558ca976f0 /* 2 entries */, 32768) = 48 [pid 5891] getdents64(3, 0x55558ca976f0 /* 0 entries */, 32768) = 0 [pid 5891] close(3) = 0 [pid 5891] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55558ca96650) = 5 ./strace-static-x86_64: Process 5910 attached [pid 5910] set_robust_list(0x55558ca96660, 24) = 0 [pid 5910] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5910] setpgid(0, 0) = 0 [pid 5910] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5891] kill(-5, SIGKILL) = 0 [pid 5891] kill(5, SIGKILL) = 0 [pid 5910] <... openat resumed>) = ? [pid 5910] +++ killed by SIGKILL +++ [pid 5891] --- 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 5891] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55558ca96650) = 6 ./strace-static-x86_64: Process 5914 attached [pid 5914] set_robust_list(0x55558ca96660, 24) = 0 [pid 5914] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5914] setpgid(0, 0) = 0 [pid 5914] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5891] kill(-6, SIGKILL) = 0 [pid 5891] kill(6, SIGKILL) = 0 [pid 5914] <... openat resumed>) = ? [pid 5914] +++ killed by SIGKILL +++ [pid 5891] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=6, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=3 /* 0.03 s */} --- [ 430.068325][ T31] INFO: task kworker/1:0:24 blocked for more than 140 seconds. [ 430.075945][ T31] Not tainted 6.17.0-rc1-syzkaller-00199-gdfd4b508c8c6 #0 [pid 5891] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55558ca96650) = 7 ./strace-static-x86_64: Process 5918 attached [pid 5918] set_robust_list(0x55558ca96660, 24) = 0 [pid 5918] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5918] setpgid(0, 0) = 0 [pid 5918] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5891] kill(-7, SIGKILL) = 0 [pid 5891] kill(7, SIGKILL) = 0 [ 439.097927][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.