./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor933034663 <...> Warning: Permanently added '10.128.1.145' (ED25519) to the list of known hosts. execve("./syz-executor933034663", ["./syz-executor933034663"], 0x7ffdad3a4ab0 /* 10 vars */) = 0 brk(NULL) = 0x555578a61000 brk(0x555578a61d00) = 0x555578a61d00 arch_prctl(ARCH_SET_FS, 0x555578a61380) = 0 set_tid_address(0x555578a61650) = 5868 set_robust_list(0x555578a61660, 24) = 0 rseq(0x555578a61ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor933034663", 4096) = 27 getrandom("\x5a\xa7\x54\x98\x37\x70\x74\xe2", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555578a61d00 brk(0x555578a82d00) = 0x555578a82d00 brk(0x555578a83000) = 0x555578a83000 mprotect(0x7f81a9795000, 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 5869 attached , child_tidptr=0x555578a61650) = 5869 [pid 5869] set_robust_list(0x555578a61660, 24) = 0 [pid 5868] openat(AT_FDCWD, "/sys/kernel/debug/x86/nmi_longest_ns", O_WRONLY|O_CLOEXEC) = 3 [pid 5868] write(3, "10000000000", 11) = 11 [pid 5868] close(3) = 0 [pid 5868] openat(AT_FDCWD, "/proc/sys/kernel/hung_task_check_interval_secs", O_WRONLY|O_CLOEXEC) = 3 [pid 5868] write(3, "20", 2) = 2 [pid 5868] close(3) = 0 [pid 5868] openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_kallsyms", O_WRONLY|O_CLOEXEC) = 3 [pid 5868] write(3, "1", 1) = 1 [pid 5868] close(3) = 0 [pid 5868] openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_harden", O_WRONLY|O_CLOEXEC) = 3 [pid 5868] write(3, "0", 1) = 1 [pid 5868] close(3) = 0 [pid 5868] openat(AT_FDCWD, "/proc/sys/kernel/kptr_restrict", O_WRONLY|O_CLOEXEC) = 3 [pid 5868] write(3, "0", 1) = 1 [pid 5868] close(3) = 0 [pid 5868] openat(AT_FDCWD, "/proc/sys/kernel/softlockup_all_cpu_backtrace", O_WRONLY|O_CLOEXEC) = 3 [pid 5868] write(3, "1", 1) = 1 [pid 5868] close(3) = 0 [pid 5868] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3 [pid 5868] write(3, "100", 3) = 3 [pid 5868] close(3) = 0 [pid 5868] openat(AT_FDCWD, "/proc/sys/vm/oom_dump_tasks", O_WRONLY|O_CLOEXEC) = 3 [pid 5868] write(3, "0", 1) = 1 [pid 5868] close(3) = 0 [pid 5868] openat(AT_FDCWD, "/proc/sys/debug/exception-trace", O_WRONLY|O_CLOEXEC) = 3 [pid 5868] write(3, "0", 1) = 1 [pid 5868] close(3) = 0 [pid 5868] openat(AT_FDCWD, "/proc/sys/kernel/printk", O_WRONLY|O_CLOEXEC) = 3 [pid 5868] write(3, "7 4 1 3", 7) = 7 [pid 5868] close(3) = 0 [pid 5868] openat(AT_FDCWD, "/proc/sys/kernel/keys/gc_delay", O_WRONLY|O_CLOEXEC) = 3 [pid 5868] write(3, "1", 1) = 1 [pid 5868] close(3) = 0 [pid 5868] openat(AT_FDCWD, "/proc/sys/vm/oom_kill_allocating_task", O_WRONLY|O_CLOEXEC) = 3 [pid 5868] write(3, "1", 1) = 1 [pid 5868] close(3) = 0 [pid 5868] openat(AT_FDCWD, "/proc/sys/kernel/ctrl-alt-del", O_WRONLY|O_CLOEXEC) = 3 [pid 5868] write(3, "0", 1) = 1 [pid 5868] close(3) = 0 [pid 5868] openat(AT_FDCWD, "/proc/sys/kernel/cad_pid", O_WRONLY|O_CLOEXEC) = 3 [pid 5868] write(3, "5869", 4) = 4 [pid 5868] close(3) = 0 [pid 5868] kill(5869, SIGKILL) = 0 [pid 5869] +++ killed by SIGKILL +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5869, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5870 attached , child_tidptr=0x555578a61650) = 5870 [pid 5870] set_robust_list(0x555578a61660, 24) = 0 [pid 5870] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5870] getppid() = 0 [pid 5870] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5870] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5870] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5870] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5870] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5870] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5870] unshare(CLONE_NEWNS) = 0 [pid 5870] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5870] unshare(CLONE_NEWIPC) = 0 [pid 5870] unshare(CLONE_NEWCGROUP) = 0 [pid 5870] unshare(CLONE_NEWUTS) = 0 [pid 5870] unshare(CLONE_SYSVSEM) = 0 [pid 5870] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5870] write(3, "16777216", 8) = 8 [pid 5870] close(3) = 0 [pid 5870] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5870] write(3, "536870912", 9) = 9 [pid 5870] close(3) = 0 [pid 5870] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5870] write(3, "1024", 4) = 4 [pid 5870] close(3) = 0 [pid 5870] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5870] write(3, "8192", 4) = 4 [pid 5870] close(3) = 0 [pid 5870] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5870] write(3, "1024", 4) = 4 [pid 5870] close(3) = 0 [pid 5870] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5870] write(3, "1024", 4) = 4 [pid 5870] close(3) = 0 [pid 5870] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5870] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5870] close(3) = 0 [pid 5870] getpid() = 1 [pid 5870] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 5887] set_robust_list(0x555578a61660, 24) = 0 [pid 5887] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5870] <... clone resumed>, child_tidptr=0x555578a61650) = 4 [pid 5887] <... prctl resumed>) = 0 [pid 5887] setpgid(0, 0) = 0 [pid 5887] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5887] write(3, "1000", 4) = 4 [pid 5887] close(3) = 0 [pid 5887] read(200, 0x7fffa87578e0, 1000) = -1 EAGAIN (Resource temporarily unavailable) [pid 5887] write(1, "executing program\n", 18executing program ) = 18 [pid 5887] socket(AF_INET, SOCK_STREAM, IPPROTO_IP) = 3 [pid 5887] sendto(3, NULL, 0, MSG_OOB|MSG_DONTROUTE|MSG_CTRUNC|MSG_PROBE|MSG_TRUNC|MSG_DONTWAIT|MSG_EOR|MSG_WAITALL|MSG_FIN|MSG_SYN|MSG_FASTOPEN, {sa_family=AF_INET, sin_port=htons(20003), sin_addr=inet_addr("172.20.20.170")}, 16) = -1 EINPROGRESS (Operation now in progress) [pid 5887] socket(AF_NETLINK, SOCK_RAW, NETLINK_NETFILTER) = 4 [pid 5887] sendmsg(4, {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 5887] close(3) = 0 [pid 5887] close(4) = 0 [pid 5887] close(5) = -1 EBADF (Bad file descriptor) [pid 5887] close(6) = -1 EBADF (Bad file descriptor) [pid 5887] close(7) = -1 EBADF (Bad file descriptor) [pid 5887] close(8) = -1 EBADF (Bad file descriptor) [pid 5887] close(9) = -1 EBADF (Bad file descriptor) [pid 5887] close(10) = -1 EBADF (Bad file descriptor) [pid 5887] close(11) = -1 EBADF (Bad file descriptor) [pid 5887] close(12) = -1 EBADF (Bad file descriptor) [pid 5887] close(13) = -1 EBADF (Bad file descriptor) [pid 5887] close(14) = -1 EBADF (Bad file descriptor) [pid 5887] close(15) = -1 EBADF (Bad file descriptor) [pid 5887] close(16) = -1 EBADF (Bad file descriptor) [pid 5887] close(17) = -1 EBADF (Bad file descriptor) [pid 5887] close(18) = -1 EBADF (Bad file descriptor) [pid 5887] close(19) = -1 EBADF (Bad file descriptor) [pid 5887] close(20) = -1 EBADF (Bad file descriptor) [pid 5887] close(21) = -1 EBADF (Bad file descriptor) [pid 5887] close(22) = -1 EBADF (Bad file descriptor) [pid 5887] close(23) = -1 EBADF (Bad file descriptor) [pid 5887] close(24) = -1 EBADF (Bad file descriptor) [pid 5887] close(25) = -1 EBADF (Bad file descriptor) [pid 5887] close(26) = -1 EBADF (Bad file descriptor) [pid 5887] close(27) = -1 EBADF (Bad file descriptor) [pid 5887] close(28) = -1 EBADF (Bad file descriptor) [pid 5887] close(29) = -1 EBADF (Bad file descriptor) [pid 5887] exit_group(0) = ? [pid 5887] +++ exited with 0 +++ [pid 5870] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5870] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5888 attached , child_tidptr=0x555578a61650) = 5 [pid 5888] set_robust_list(0x555578a61660, 24) = 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(3executing program ) = 0 [pid 5888] read(200, 0x7fffa87578e0, 1000) = -1 EAGAIN (Resource temporarily unavailable) [pid 5888] write(1, "executing program\n", 18) = 18 [pid 5888] socket(AF_INET, SOCK_STREAM, IPPROTO_IP) = 3 [pid 5888] sendto(3, NULL, 0, MSG_OOB|MSG_DONTROUTE|MSG_CTRUNC|MSG_PROBE|MSG_TRUNC|MSG_DONTWAIT|MSG_EOR|MSG_WAITALL|MSG_FIN|MSG_SYN|MSG_FASTOPEN, {sa_family=AF_INET, sin_port=htons(20003), sin_addr=inet_addr("172.20.20.170")}, 16) = -1 EINPROGRESS (Operation now in progress) [ 249.301707][ C1] sched: DL replenish lagged too much [pid 5888] socket(AF_NETLINK, SOCK_RAW, NETLINK_NETFILTER [pid 5870] kill(-5, SIGKILL) = 0 [pid 5870] kill(5, SIGKILL) = 0 executing program [pid 5888] <... socket resumed>) = ? [pid 5888] +++ killed by SIGKILL +++ [pid 5870] --- 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 5870] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555578a61650) = 6 ./strace-static-x86_64: Process 5890 attached [pid 5890] set_robust_list(0x555578a61660, 24) = 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) = 3 [pid 5890] write(3, "1000", 4) = 4 [pid 5890] close(3) = 0 [pid 5890] read(200, 0x7fffa87578e0, 1000) = -1 EAGAIN (Resource temporarily unavailable) [pid 5890] write(1, "executing program\n", 18) = 18 [pid 5890] socket(AF_INET, SOCK_STREAM, IPPROTO_IP) = 3 [pid 5890] sendto(3, NULL, 0, MSG_OOB|MSG_DONTROUTE|MSG_CTRUNC|MSG_PROBE|MSG_TRUNC|MSG_DONTWAIT|MSG_EOR|MSG_WAITALL|MSG_FIN|MSG_SYN|MSG_FASTOPEN, {sa_family=AF_INET, sin_port=htons(20003), sin_addr=inet_addr("172.20.20.170")}, 16) = -1 EINPROGRESS (Operation now in progress) [pid 5890] socket(AF_NETLINK, SOCK_RAW, NETLINK_NETFILTER) = 4 [pid 5890] sendmsg(4, {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 5870] kill(-6, SIGKILL) = 0 [pid 5870] kill(6, SIGKILL) = 0 [pid 5890] <... sendmsg resumed>) = ? [pid 5890] +++ killed by SIGKILL +++ [pid 5870] --- 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 5870] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555578a61650) = 7 ./strace-static-x86_64: Process 5897 attached [pid 5897] set_robust_list(0x555578a61660, 24) = 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 5870] kill(-7, SIGKILL) = 0 [pid 5870] kill(7, SIGKILL) = 0 [pid 5897] <... openat resumed>) = ? [pid 5897] +++ killed by SIGKILL +++ [pid 5870] --- 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 5870] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555578a61650) = 8 ./strace-static-x86_64: Process 5900 attached [pid 5900] set_robust_list(0x555578a61660, 24) = 0 [pid 5900] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5900] setpgid(0, 0 [pid 5870] kill(-8, SIGKILL) = -1 ESRCH (No such process) [pid 5870] kill(8, SIGKILL) = 0 [pid 5900] <... setpgid resumed>) = ? [pid 5900] +++ killed by SIGKILL +++ [pid 5870] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=8, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- [ 474.205979][ T31] INFO: task kworker/1:1:43 blocked for more than 147 seconds. [ 474.213611][ T31] Not tainted 6.16.0-rc1-syzkaller-00102-g5466491c9e33 #0 [ 476.886696][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.