./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4282084831 <...> Warning: Permanently added '10.128.0.245' (ED25519) to the list of known hosts. execve("./syz-executor4282084831", ["./syz-executor4282084831"], 0x7ffc8b5e77b0 /* 10 vars */) = 0 brk(NULL) = 0x55557fd39000 brk(0x55557fd39d00) = 0x55557fd39d00 arch_prctl(ARCH_SET_FS, 0x55557fd39380) = 0 set_tid_address(0x55557fd39650) = 5839 set_robust_list(0x55557fd39660, 24) = 0 rseq(0x55557fd39ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4282084831", 4096) = 28 getrandom("\x1c\x86\xfd\x96\xd9\x9c\x9c\x28", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557fd39d00 brk(0x55557fd5ad00) = 0x55557fd5ad00 brk(0x55557fd5b000) = 0x55557fd5b000 mprotect(0x7f8f50eb6000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5840 attached , child_tidptr=0x55557fd39650) = 5840 [pid 5840] set_robust_list(0x55557fd39660, 24) = 0 [pid 5840] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5840] setpgid(0, 0) = 0 [pid 5840] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5840] write(3, "1000", 4) = 4 [pid 5840] close(3) = 0 [pid 5840] write(1, "executing program\n", 18executing program ) = 18 [pid 5840] io_uring_setup(17987, {flags=IORING_SETUP_SUBMIT_ALL|IORING_SETUP_COOP_TASKRUN|0x13000, sq_thread_cpu=0xfffffffb, sq_thread_idle=0, sq_entries=32768, cq_entries=65536, features=IORING_FEAT_SINGLE_MMAP|IORING_FEAT_NODROP|IORING_FEAT_SUBMIT_STABLE|IORING_FEAT_RW_CUR_POS|IORING_FEAT_CUR_PERSONALITY|IORING_FEAT_FAST_POLL|IORING_FEAT_POLL_32BITS|IORING_FEAT_SQPOLL_NONFIXED|IORING_FEAT_EXT_ARG|IORING_FEAT_NATIVE_WORKERS|IORING_FEAT_RSRC_TAGS|IORING_FEAT_CQE_SKIP|IORING_FEAT_LINKED_FILE|0xe000, sq_off={head=0, tail=4, ring_mask=16, ring_entries=24, flags=36, dropped=32, array=0}, cq_off={head=8, tail=12, ring_mask=20, ring_entries=28, overflow=44, cqes=64, flags=40}}) = 3 [pid 5840] mmap(NULL, 1048640, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_POPULATE, 3, 0) = 0x7f8f50d01000 [pid 5840] mmap(NULL, 2097152, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_POPULATE, 3, 0x10000000) = 0x7f8f50b01000 [pid 5840] clock_gettime(CLOCK_REALTIME, {tv_sec=1735177006, tv_nsec=166022729}) = 0 [pid 5840] io_uring_enter(3, 27469, 0, 0, NULL, 0) = 1 [pid 5840] eventfd2(0, 0) = 4 [pid 5840] io_uring_register(3, IORING_REGISTER_EVENTFD, [4], 1) = 0 [pid 5840] io_uring_enter(3, 0, 3, IORING_ENTER_GETEVENTS|IORING_ENTER_SQ_WAKEUP|IORING_ENTER_SQ_WAIT, NULL, 0 [pid 5839] kill(-5840, SIGKILL) = 0 [pid 5840] <... io_uring_enter resumed>) = ? [pid 5839] kill(5840, SIGKILL [pid 5840] +++ killed by SIGKILL +++ <... kill resumed>) = 0 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5840, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=1 /* 0.01 s */} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5842 attached , child_tidptr=0x55557fd39650) = 5842 [pid 5842] set_robust_list(0x55557fd39660, 24) = 0 [pid 5842] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5842] setpgid(0, 0) = 0 [pid 5842] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5842] write(3, "1000", 4) = 4 executing program [pid 5842] close(3) = 0 [pid 5842] write(1, "executing program\n", 18) = 18 [pid 5842] io_uring_setup(17987, {flags=IORING_SETUP_SUBMIT_ALL|IORING_SETUP_COOP_TASKRUN|0x13000, sq_thread_cpu=0xfffffffb, sq_thread_idle=0, sq_entries=32768, cq_entries=65536, features=IORING_FEAT_SINGLE_MMAP|IORING_FEAT_NODROP|IORING_FEAT_SUBMIT_STABLE|IORING_FEAT_RW_CUR_POS|IORING_FEAT_CUR_PERSONALITY|IORING_FEAT_FAST_POLL|IORING_FEAT_POLL_32BITS|IORING_FEAT_SQPOLL_NONFIXED|IORING_FEAT_EXT_ARG|IORING_FEAT_NATIVE_WORKERS|IORING_FEAT_RSRC_TAGS|IORING_FEAT_CQE_SKIP|IORING_FEAT_LINKED_FILE|0xe000, sq_off={head=0, tail=4, ring_mask=16, ring_entries=24, flags=36, dropped=32, array=0}, cq_off={head=8, tail=12, ring_mask=20, ring_entries=28, overflow=44, cqes=64, flags=40}}) = 3 [ 76.677989][ T1325] [ 76.680413][ T1325] ============================= [ 76.685897][ T1325] [ BUG: Invalid wait context ] [ 76.691048][ T1325] 6.13.0-rc4-syzkaller-00012-g9b2ffa6148b1 #0 Not tainted [ 76.699436][ T1325] ----------------------------- [ 76.704549][ T1325] kworker/u8:6/1325 is trying to lock: [ 76.712167][ T1325] ffff88802f6ec020 (&ctx->wqh){....}-{3:3}, at: eventfd_signal_mask+0x7a/0x1f0 [ 76.722396][ T1325] other info that might help us debug this: [ 76.729574][ T1325] context-{5:5} [ 76.733468][ T1325] 6 locks held by kworker/u8:6/1325: [ 76.740077][ T1325] #0: ffff88801e30b148 ((wq_completion)iou_exit){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 [ 76.753823][ T1325] #1: ffffc900048ffd00 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 [ 76.770929][ T1325] #2: ffff88807ed703d8 (&ctx->completion_lock){+.+.}-{3:3}, at: io_kill_timeouts+0x3c/0x230 [ 76.782761][ T1325] #3: ffff88807ed70358 (&ctx->timeout_lock){....}-{2:2}, at: io_kill_timeouts+0x4b/0x230 [ 76.793893][ T1325] #4: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: io_req_local_work_add+0xb5/0x5c0 [ 76.806362][ T1325] #5: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: io_eventfd_grab+0xc2/0x6a0 [ 76.818216][ T1325] stack backtrace: [ 76.822147][ T1325] CPU: 1 UID: 0 PID: 1325 Comm: kworker/u8:6 Not tainted 6.13.0-rc4-syzkaller-00012-g9b2ffa6148b1 #0 [ 76.834709][ T1325] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 76.847617][ T1325] Workqueue: iou_exit io_ring_exit_work [ 76.855151][ T1325] Call Trace: [ 76.859513][ T1325] [ 76.862642][ T1325] dump_stack_lvl+0x241/0x360 [ 76.867851][ T1325] ? __pfx_dump_stack_lvl+0x10/0x10 [ 76.873692][ T1325] ? __pfx__printk+0x10/0x10 [ 76.879440][ T1325] __lock_acquire+0x15a8/0x2100 [ 76.885029][ T1325] lock_acquire+0x1ed/0x550 [ 76.889845][ T1325] ? eventfd_signal_mask+0x7a/0x1f0 [ 76.896326][ T1325] ? __pfx_lock_acquire+0x10/0x10 [ 76.901780][ T1325] ? __pfx_lock_acquire+0x10/0x10 [ 76.908024][ T1325] _raw_spin_lock_irqsave+0xd5/0x120 [ 76.914306][ T1325] ? eventfd_signal_mask+0x7a/0x1f0 [ 76.920310][ T1325] ? __pfx__raw_spin_lock_irqsave+0x10/0x10 [ 76.927887][ T1325] ? io_eventfd_grab+0x438/0x6a0 [ 76.935282][ T1325] ? io_eventfd_grab+0xc2/0x6a0 [ 76.941240][ T1325] ? __pfx_io_eventfd_grab+0x10/0x10 [ 76.949090][ T1325] eventfd_signal_mask+0x7a/0x1f0 [ 76.955108][ T1325] io_eventfd_signal+0x96/0x1d0 [ 76.960532][ T1325] io_req_local_work_add+0x408/0x5c0 [ 76.966968][ T1325] ? io_req_local_work_add+0xb5/0x5c0 [ 76.974372][ T1325] ? __pfx_io_req_local_work_add+0x10/0x10 [ 76.980791][ T1325] ? hrtimer_try_to_cancel+0x3b6/0x410 [ 76.986320][ T1325] ? __io_req_task_work_add+0xfc/0x370 [ 76.992794][ T1325] io_kill_timeout+0x27b/0x310 [ 76.998176][ T1325] io_kill_timeouts+0x1b7/0x230 [ 77.003310][ T1325] io_uring_try_cancel_requests+0x480/0x560 [ 77.010624][ T1325] ? __pfx_io_uring_try_cancel_requests+0x10/0x10 [ 77.018402][ T1325] ? do_raw_spin_unlock+0x13c/0x8b0 [ 77.024200][ T1325] ? io_ring_exit_work+0x7d1/0x8a0 [ 77.030043][ T1325] ? __io_fallback_tw+0x1df/0x200 [ 77.035710][ T1325] ? __io_fallback_tw+0xf1/0x200 [ 77.041444][ T1325] io_ring_exit_work+0x231/0x8a0 [ 77.046589][ T1325] ? __pfx_io_ring_exit_work+0x10/0x10 [ 77.053298][ T1325] ? process_scheduled_works+0x976/0x1840 [ 77.061332][ T1325] process_scheduled_works+0xa66/0x1840 [ 77.067745][ T1325] ? __pfx_process_scheduled_works+0x10/0x10 [ 77.073919][ T1325] ? assign_work+0x364/0x3d0 [ 77.078796][ T1325] worker_thread+0x870/0xd30 [ 77.084174][ T1325] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 77.090438][ T1325] ? __kthread_parkme+0x169/0x1d0 [ 77.095931][ T1325] ? __pfx_worker_thread+0x10/0x10 [ 77.101243][ T1325] kthread+0x2f0/0x390 [ 77.105425][ T1325] ? __pfx_worker_thread+0x10/0x10 [ 77.111143][ T1325] ? __pfx_kthread+0x10/0x10 [ 77.116703][ T1325] ret_from_fork+0x4b/0x80 [ 77.122017][ T1325] ? __pfx_kthread+0x10/0x10 [pid 5842] mmap(NULL, 1048640, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_POPULATE, 3, 0) = 0x7f8f50d01000 [pid 5842] mmap(NULL, 2097152, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_POPULATE, 3, 0x10000000) = 0x7f8f50b01000 [pid 5842] clock_gettime(CLOCK_REALTIME, {tv_sec=1735177011, tv_nsec=167984309}) = 0 [pid 5842] io_uring_enter(3, 27469, 0, 0, NULL, 0) = 1 [pid 5842] eventfd2(0, 0) = 4 [pid 5842] io_uring_register(3, IORING_REGISTER_EVENTFD, [4], 1) = 0 [ 77.127228][ T1325] ret_from_fork_asm+0x1a/0x30 [ 77.132787][ T1325] [pid 5842] io_uring_enter(3, 0, 3, IORING_ENTER_GETEVENTS|IORING_ENTER_SQ_WAKEUP|IORING_ENTER_SQ_WAIT, NULL, 0 [pid 5839] kill(-5842, SIGKILL [pid 5842] <... io_uring_enter resumed>) = ? [pid 5839] <... kill resumed>) = 0 [pid 5842] +++ killed by SIGKILL +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5842, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- kill(5842, SIGKILL) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557fd39650) = 5844 ./strace-static-x86_64: Process 5844 attached [pid 5844] set_robust_list(0x55557fd39660, 24) = 0 [pid 5844] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5844] setpgid(0, 0) = 0 [pid 5844] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5844] write(3, "1000", 4) = 4 [pid 5844] close(3) = 0 [pid 5844] write(1, "executing program\n", 18executing program ) = 18 [pid 5844] io_uring_setup(17987, {flags=IORING_SETUP_SUBMIT_ALL|IORING_SETUP_COOP_TASKRUN|0x13000, sq_thread_cpu=0xfffffffb, sq_thread_idle=0, sq_entries=32768, cq_entries=65536, features=IORING_FEAT_SINGLE_MMAP|IORING_FEAT_NODROP|IORING_FEAT_SUBMIT_STABLE|IORING_FEAT_RW_CUR_POS|IORING_FEAT_CUR_PERSONALITY|IORING_FEAT_FAST_POLL|IORING_FEAT_POLL_32BITS|IORING_FEAT_SQPOLL_NONFIXED|IORING_FEAT_EXT_ARG|IORING_FEAT_NATIVE_WORKERS|IORING_FEAT_RSRC_TAGS|IORING_FEAT_CQE_SKIP|IORING_FEAT_LINKED_FILE|0xe000, sq_off={head=0, tail=4, ring_mask=16, ring_entries=24, flags=36, dropped=32, array=0}, cq_off={head=8, tail=12, ring_mask=20, ring_entries=28, overflow=44, cqes=64, flags=40}}) = 3 [pid 5844] mmap(NULL, 1048640, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_POPULATE, 3, 0) = 0x7f8f50d01000 [pid 5844] mmap(NULL, 2097152, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_POPULATE, 3, 0x10000000) = 0x7f8f50b01000 [pid 5844] clock_gettime(CLOCK_REALTIME, {tv_sec=1735177016, tv_nsec=208887124}) = 0 [pid 5844] io_uring_enter(3, 27469, 0, 0, NULL, 0) = 1 [pid 5844] eventfd2(0, 0) = 4 [pid 5844] io_uring_register(3, IORING_REGISTER_EVENTFD, [4], 1) = 0 [ 82.119133][ T8] cfg80211: failed to load regulatory.db