./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor750908850 <...> Warning: Permanently added '10.128.1.6' (ED25519) to the list of known hosts. execve("./syz-executor750908850", ["./syz-executor750908850"], 0x7ffcf7aaec70 /* 10 vars */) = 0 brk(NULL) = 0x5555589e2000 brk(0x5555589e2d00) = 0x5555589e2d00 arch_prctl(ARCH_SET_FS, 0x5555589e2380) = 0 set_tid_address(0x5555589e2650) = 5847 set_robust_list(0x5555589e2660, 24) = 0 rseq(0x5555589e2ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor750908850", 4096) = 27 getrandom("\x1e\x91\x93\xcc\x3d\x73\xd3\xd2", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555589e2d00 brk(0x555558a03d00) = 0x555558a03d00 brk(0x555558a04000) = 0x555558a04000 mprotect(0x7fa089d8e000, 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, child_tidptr=0x5555589e2650) = 5848 ./strace-static-x86_64: Process 5848 attached [pid 5848] set_robust_list(0x5555589e2660, 24) = 0 [pid 5848] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5848] getppid() = 0 [pid 5848] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5848] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5848] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5848] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5848] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5848] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5848] unshare(CLONE_NEWNS) = 0 [pid 5848] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5848] unshare(CLONE_NEWIPC) = 0 [pid 5848] unshare(CLONE_NEWCGROUP) = 0 [pid 5848] unshare(CLONE_NEWUTS) = 0 [pid 5848] unshare(CLONE_SYSVSEM) = 0 [pid 5848] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5848] write(3, "16777216", 8) = 8 [pid 5848] close(3) = 0 [pid 5848] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5848] write(3, "536870912", 9) = 9 [pid 5848] close(3) = 0 [pid 5848] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5848] write(3, "1024", 4) = 4 [pid 5848] close(3) = 0 [pid 5848] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5848] write(3, "8192", 4) = 4 [pid 5848] close(3) = 0 [pid 5848] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5848] write(3, "1024", 4) = 4 [pid 5848] close(3) = 0 [pid 5848] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5848] write(3, "1024", 4) = 4 [pid 5848] close(3) = 0 [pid 5848] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5848] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5848] close(3) = 0 [pid 5848] getpid() = 1 [pid 5848] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<) = 0 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5864 attached [pid 5864] set_robust_list(0x5555589e2660, 24) = 0 [pid 5864] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5864] setpgid(0, 0 [pid 5848] <... clone resumed>, child_tidptr=0x5555589e2650) = 3 [pid 5864] <... setpgid resumed>) = 0 [pid 5864] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5864] write(3, "1000", 4) = 4 [pid 5864] close(3) = 0 [pid 5864] read(200, 0x7ffea9a7d6a0, 1000) = -1 EAGAIN (Resource temporarily unavailable) executing program [pid 5864] write(1, "executing program\n", 18) = 18 [pid 5864] socket(AF_NETLINK, SOCK_RAW, NETLINK_NETFILTER) = 3 [pid 5864] 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 5864] write(200, "\x01\x80\xc2\x00\x00\x02\x01\x80\xc2\x00\x00\x00\x08\x00\x45\x00\x00\x2c\x00\x64\x00\x00\x00\x06\xba\x69\x00\x00\x00\x00\x00\x00\x00\x00\x00\x10\x4e\x26\x44\x43\x42\x41\x44\x43\x42\x41\x60\xc2\x00\x01\x41\xdd\x00\x00\x02\x02\x00\x00", 58) = 58 [pid 5864] close(3) = 0 [pid 5864] close(4) = -1 EBADF (Bad file descriptor) [pid 5864] close(5) = -1 EBADF (Bad file descriptor) [pid 5864] close(6) = -1 EBADF (Bad file descriptor) [pid 5864] close(7) = -1 EBADF (Bad file descriptor) [pid 5864] close(8) = -1 EBADF (Bad file descriptor) [pid 5864] close(9) = -1 EBADF (Bad file descriptor) [pid 5864] close(10) = -1 EBADF (Bad file descriptor) [pid 5864] close(11) = -1 EBADF (Bad file descriptor) [pid 5864] close(12) = -1 EBADF (Bad file descriptor) [pid 5864] close(13) = -1 EBADF (Bad file descriptor) [pid 5864] close(14) = -1 EBADF (Bad file descriptor) [pid 5864] close(15) = -1 EBADF (Bad file descriptor) [pid 5864] close(16) = -1 EBADF (Bad file descriptor) [pid 5864] close(17) = -1 EBADF (Bad file descriptor) [pid 5864] close(18) = -1 EBADF (Bad file descriptor) [pid 5864] close(19) = -1 EBADF (Bad file descriptor) [pid 5864] close(20) = -1 EBADF (Bad file descriptor) [pid 5864] close(21) = -1 EBADF (Bad file descriptor) [pid 5864] close(22) = -1 EBADF (Bad file descriptor) [pid 5864] close(23) = -1 EBADF (Bad file descriptor) [pid 5864] close(24) = -1 EBADF (Bad file descriptor) [pid 5864] close(25) = -1 EBADF (Bad file descriptor) [pid 5864] close(26) = -1 EBADF (Bad file descriptor) [pid 5864] close(27) = -1 EBADF (Bad file descriptor) [pid 5864] close(28) = -1 EBADF (Bad file descriptor) [pid 5864] close(29) = -1 EBADF (Bad file descriptor) [pid 5864] exit_group(0) = ? [pid 5864] +++ exited with 0 +++ [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [ 133.262877][ C1] sched: DL replenish lagged too much [pid 5848] restart_syscall(<... resuming interrupted clone ...>executing program ) = 0 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589e2650) = 4 ./strace-static-x86_64: Process 5865 attached [pid 5865] set_robust_list(0x5555589e2660, 24) = 0 [pid 5865] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5865] setpgid(0, 0) = 0 [pid 5865] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5865] write(3, "1000", 4) = 4 [pid 5865] close(3) = 0 [pid 5865] read(200, 0x7ffea9a7d6a0, 1000) = -1 EAGAIN (Resource temporarily unavailable) [pid 5865] write(1, "executing program\n", 18) = 18 [pid 5865] socket(AF_NETLINK, SOCK_RAW, NETLINK_NETFILTER) = 3 [pid 5865] 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 5848] kill(-4, SIGKILL) = 0 [pid 5848] kill(4, SIGKILL) = 0 [pid 5865] <... sendmsg resumed>) = ? [pid 5865] +++ killed by SIGKILL +++ [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=4, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 5848] restart_syscall(<... resuming interrupted kill ...>executing program ) = 0 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589e2650) = 5 ./strace-static-x86_64: Process 5874 attached [pid 5874] set_robust_list(0x5555589e2660, 24) = 0 [pid 5874] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5874] setpgid(0, 0) = 0 [pid 5874] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5874] write(3, "1000", 4) = 4 [pid 5874] close(3) = 0 [pid 5874] read(200, 0x7ffea9a7d6a0, 1000) = -1 EAGAIN (Resource temporarily unavailable) [pid 5874] write(1, "executing program\n", 18) = 18 [pid 5874] socket(AF_NETLINK, SOCK_RAW, NETLINK_NETFILTER) = 3 [pid 5874] 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 5848] kill(-5, SIGKILL) = 0 [pid 5848] kill(5, SIGKILL) = 0 [pid 5874] <... sendmsg resumed>) = ? [pid 5874] +++ killed by SIGKILL +++ [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589e2650) = 6 ./strace-static-x86_64: Process 5878 attached [pid 5878] set_robust_list(0x5555589e2660, 24) = 0 [pid 5878] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5878] setpgid(0, 0) = 0 [pid 5878] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5848] kill(-6, SIGKILL) = 0 [pid 5848] kill(6, SIGKILL) = 0 [pid 5878] <... openat resumed>) = ? [pid 5878] +++ killed by SIGKILL +++ [pid 5848] --- 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 */} --- [ 288.577852][ T31] INFO: task kworker/1:1:42 blocked for more than 143 seconds. [ 288.602355][ T31] Not tainted 6.16.0-rc1-syzkaller-00121-gd0fa59897e04 #0 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589e2650) = 7 ./strace-static-x86_64: Process 5883 attached [ 293.531316][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [pid 5883] set_robust_list(0x5555589e2660, 24) = 0 [pid 5883] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5883] setpgid(0, 0) = 0 [ 294.829292][ T31] task:kworker/1:1 state:D stack:24872 pid:42 tgid:42 ppid:2 task_flags:0x4208060 flags:0x00004000