./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1721761588 <...> Warning: Permanently added '10.128.0.195' (ED25519) to the list of known hosts. execve("./syz-executor1721761588", ["./syz-executor1721761588"], 0x7ffcf61ec750 /* 10 vars */) = 0 brk(NULL) = 0x555560556000 brk(0x555560556e00) = 0x555560556e00 arch_prctl(ARCH_SET_FS, 0x555560556480) = 0 set_tid_address(0x555560556750) = 5837 set_robust_list(0x555560556760, 24) = 0 rseq(0x555560556da0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1721761588", 4096) = 28 getrandom("\x73\xf3\x5e\x42\x5b\xde\xea\x51", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555560556e00 brk(0x555560577e00) = 0x555560577e00 brk(0x555560578000) = 0x555560578000 mprotect(0x7fb2719b5000, 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./strace-static-x86_64: Process 5838 attached , child_tidptr=0x555560556750) = 5838 [pid 5838] set_robust_list(0x555560556760, 24) = 0 [pid 5837] openat(AT_FDCWD, "/sys/kernel/debug/x86/nmi_longest_ns", O_WRONLY|O_CLOEXEC) = 3 [pid 5837] write(3, "10000000000", 11) = 11 [pid 5837] close(3) = 0 [pid 5837] openat(AT_FDCWD, "/proc/sys/kernel/hung_task_check_interval_secs", O_WRONLY|O_CLOEXEC) = 3 [pid 5837] write(3, "20", 2) = 2 [pid 5837] close(3) = 0 [pid 5837] openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_kallsyms", O_WRONLY|O_CLOEXEC) = 3 [pid 5837] write(3, "1", 1) = 1 [pid 5837] close(3) = 0 [pid 5837] openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_harden", O_WRONLY|O_CLOEXEC) = 3 [pid 5837] write(3, "0", 1) = 1 [pid 5837] close(3) = 0 [pid 5837] openat(AT_FDCWD, "/proc/sys/kernel/kptr_restrict", O_WRONLY|O_CLOEXEC) = 3 [pid 5837] write(3, "0", 1) = 1 [pid 5837] close(3) = 0 [pid 5837] openat(AT_FDCWD, "/proc/sys/kernel/softlockup_all_cpu_backtrace", O_WRONLY|O_CLOEXEC) = 3 [pid 5837] write(3, "1", 1) = 1 [pid 5837] close(3) = 0 [pid 5837] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3 [pid 5837] write(3, "100", 3) = 3 [pid 5837] close(3) = 0 [pid 5837] openat(AT_FDCWD, "/proc/sys/vm/oom_dump_tasks", O_WRONLY|O_CLOEXEC) = 3 [pid 5837] write(3, "0", 1) = 1 [pid 5837] close(3) = 0 [pid 5837] openat(AT_FDCWD, "/proc/sys/debug/exception-trace", O_WRONLY|O_CLOEXEC) = 3 [pid 5837] write(3, "0", 1) = 1 [pid 5837] close(3) = 0 [pid 5837] openat(AT_FDCWD, "/proc/sys/kernel/printk", O_WRONLY|O_CLOEXEC) = 3 [pid 5837] write(3, "7 4 1 3", 7) = 7 [pid 5837] close(3) = 0 [pid 5837] openat(AT_FDCWD, "/proc/sys/kernel/keys/gc_delay", O_WRONLY|O_CLOEXEC) = 3 [pid 5837] write(3, "1", 1) = 1 [pid 5837] close(3) = 0 [pid 5837] openat(AT_FDCWD, "/proc/sys/vm/oom_kill_allocating_task", O_WRONLY|O_CLOEXEC) = 3 [pid 5837] write(3, "1", 1) = 1 [pid 5837] close(3) = 0 [pid 5837] openat(AT_FDCWD, "/proc/sys/kernel/ctrl-alt-del", O_WRONLY|O_CLOEXEC) = 3 [pid 5837] write(3, "0", 1) = 1 [pid 5837] close(3) = 0 [pid 5837] openat(AT_FDCWD, "/proc/sys/kernel/cad_pid", O_WRONLY|O_CLOEXEC) = 3 [pid 5837] write(3, "5838", 4) = 4 [pid 5837] close(3) = 0 [pid 5837] kill(5838, SIGKILL) = 0 [pid 5838] +++ killed by SIGKILL +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5838, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=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=0x7fb271905b40, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7fb271910c70}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7fb271905b40, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7fb271910c70}, NULL, 8) = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5839 attached , child_tidptr=0x555560556750) = 5839 [pid 5839] set_robust_list(0x555560556760, 24) = 0 [pid 5839] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5839] getppid() = 0 [pid 5839] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5839] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5839] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5839] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5839] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5839] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5839] unshare(CLONE_NEWNS) = 0 [pid 5839] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5839] unshare(CLONE_NEWIPC) = 0 [pid 5839] unshare(CLONE_NEWCGROUP) = 0 [pid 5839] unshare(CLONE_NEWUTS) = 0 [pid 5839] unshare(CLONE_SYSVSEM) = 0 [pid 5839] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5839] write(3, "16777216", 8) = 8 [pid 5839] close(3) = 0 [pid 5839] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5839] write(3, "536870912", 9) = 9 [pid 5839] close(3) = 0 [pid 5839] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5839] write(3, "1024", 4) = 4 [pid 5839] close(3) = 0 [pid 5839] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5839] write(3, "8192", 4) = 4 [pid 5839] close(3) = 0 [pid 5839] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5839] write(3, "1024", 4) = 4 [pid 5839] close(3) = 0 [pid 5839] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5839] write(3, "1024", 4) = 4 [pid 5839] close(3) = 0 [pid 5839] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5839] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5839] close(3) = 0 [pid 5839] getpid() = 1 [pid 5839] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 5863] set_robust_list(0x555560556760, 24) = 0 [pid 5863] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5839] <... clone resumed>, child_tidptr=0x555560556750) = 3 [pid 5863] <... prctl resumed>) = 0 [pid 5863] setpgid(0, 0) = 0 [pid 5863] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5863] write(3, "1000", 4) = 4 [pid 5863] close(3) = 0 [pid 5863] read(200, 0x7ffcfe0b2360, 1000) = -1 EAGAIN (Resource temporarily unavailable) executing program [pid 5863] write(1, "executing program\n", 18) = 18 [pid 5863] socket(AF_NETLINK, SOCK_RAW, NETLINK_NETFILTER) = 3 [pid 5863] 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 5863] write(200, "\x01\x80\xc2\x00\x00\x02\x01\x80\xc2\x00\x00\x00\x08\x00\x45\x00\x00\x2c\x00\x00\x00\x00\x00\x06\xba\xcd\x00\x00\x00\x00\x00\x00\x00\x00\x00\x10\x4e\x26\x44\x43\x42\x41\x44\x43\x42\x41\x60\xc2\x00\x01\x3c\x3b\x00\x00\x02\x04\x05\xa0", 58) = 58 [pid 5863] close(3) = 0 [pid 5863] close(4) = -1 EBADF (Bad file descriptor) [pid 5863] close(5) = -1 EBADF (Bad file descriptor) [pid 5863] close(6) = -1 EBADF (Bad file descriptor) [pid 5863] close(7) = -1 EBADF (Bad file descriptor) [pid 5863] close(8) = -1 EBADF (Bad file descriptor) [pid 5863] close(9) = -1 EBADF (Bad file descriptor) [pid 5863] close(10) = -1 EBADF (Bad file descriptor) [pid 5863] close(11) = -1 EBADF (Bad file descriptor) [pid 5863] close(12) = -1 EBADF (Bad file descriptor) [pid 5863] close(13) = -1 EBADF (Bad file descriptor) [pid 5863] close(14) = -1 EBADF (Bad file descriptor) [pid 5863] close(15) = -1 EBADF (Bad file descriptor) [pid 5863] close(16) = -1 EBADF (Bad file descriptor) [pid 5863] close(17) = -1 EBADF (Bad file descriptor) [pid 5863] close(18) = -1 EBADF (Bad file descriptor) [pid 5863] close(19) = -1 EBADF (Bad file descriptor) [pid 5863] close(20) = -1 EBADF (Bad file descriptor) [pid 5863] close(21) = -1 EBADF (Bad file descriptor) [pid 5863] close(22) = -1 EBADF (Bad file descriptor) [pid 5863] close(23) = -1 EBADF (Bad file descriptor) [pid 5863] close(24) = -1 EBADF (Bad file descriptor) [pid 5863] close(25) = -1 EBADF (Bad file descriptor) [pid 5863] close(26) = -1 EBADF (Bad file descriptor) [pid 5863] close(27) = -1 EBADF (Bad file descriptor) [pid 5863] close(28) = -1 EBADF (Bad file descriptor) [pid 5863] close(29) = -1 EBADF (Bad file descriptor) [pid 5863] exit_group(0) = ? [pid 5863] +++ exited with 0 +++ [pid 5839] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5839] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555560556750) = 4 ./strace-static-x86_64: Process 5864 attached executing program [pid 5864] set_robust_list(0x555560556760, 24) = 0 [pid 5864] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5864] setpgid(0, 0) = 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, 0x7ffcfe0b2360, 1000) = -1 EAGAIN (Resource temporarily unavailable) [pid 5864] write(1, "executing program\n", 18) = 18 [pid 5864] socket(AF_NETLINK, SOCK_RAW, NETLINK_NETFILTER) = 3 [ 108.091432][ C0] sched: DL replenish lagged too much [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 [pid 5839] kill(-4, SIGKILL) = 0 [pid 5839] kill(4, SIGKILL) = 0 [pid 5864] <... sendmsg resumed>) = ? [pid 5864] +++ killed by SIGKILL +++ [pid 5839] --- 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 5839] restart_syscall(<... resuming interrupted kill ...>) = 0 [pid 5839] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555560556750) = 5 ./strace-static-x86_64: Process 5866 attached [pid 5866] set_robust_list(0x555560556760, 24) = 0 [pid 5866] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5866] setpgid(0, 0) = 0 [pid 5866] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5839] kill(-5, SIGKILL) = 0 [pid 5839] kill(5, SIGKILL) = 0 [pid 5866] <... openat resumed>) = ? [pid 5866] +++ killed by SIGKILL +++ [pid 5839] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5839] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555560556750) = 6 ./strace-static-x86_64: Process 5871 attached [pid 5871] set_robust_list(0x555560556760, 24) = 0 [pid 5871] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5871] setpgid(0, 0) = 0 [pid 5871] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5839] kill(-6, SIGKILL) = 0 [pid 5839] kill(6, SIGKILL) = 0 [pid 5871] <... openat resumed>) = ? [pid 5871] +++ killed by SIGKILL +++ [pid 5839] --- 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 5839] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5873 attached , child_tidptr=0x555560556750) = 7 [pid 5873] set_robust_list(0x555560556760, 24) = 0 [pid 5873] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5873] setpgid(0, 0) = 0 [pid 5873] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5839] kill(-7, SIGKILL) = 0 [pid 5839] kill(7, SIGKILL) = 0 [pid 5873] <... openat resumed>) = ? [pid 5873] +++ killed by SIGKILL +++ [pid 5839] --- 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 */} --- [ 278.322001][ T31] INFO: task kworker/u8:1:13 blocked for more than 143 seconds. [ 278.329776][ T31] Not tainted 6.16.0-rc2-syzkaller-00591-g4f4040ea5d3e #0 [ 282.193178][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 282.219760][ T31] task:kworker/u8:1 state:D stack:22472 pid:13 tgid:13 ppid:2 task_flags:0x4208160 flags:0x00004000 [ 286.828081][ T31] Workqueue: ipv6_addrconf addrconf_dad_work [ 286.847971][ T31] Call Trace: [ 287.554719][ T31] [ 287.557741][ T31] __schedule+0x16f5/0x4d00 [ 287.579619][ T31] ? __lock_acquire+0xab9/0xd20