./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor629213210 <...> Warning: Permanently added '10.128.0.172' (ED25519) to the list of known hosts. execve("./syz-executor629213210", ["./syz-executor629213210"], 0x7ffcc34d0510 /* 10 vars */) = 0 brk(NULL) = 0x5555560ed000 brk(0x5555560edd00) = 0x5555560edd00 arch_prctl(ARCH_SET_FS, 0x5555560ed380) = 0 set_tid_address(0x5555560ed650) = 5034 set_robust_list(0x5555560ed660, 24) = 0 rseq(0x5555560edca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor629213210", 4096) = 27 getrandom("\x1c\x38\x6f\x00\x61\x0f\x39\x45", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555560edd00 brk(0x55555610ed00) = 0x55555610ed00 brk(0x55555610f000) = 0x55555610f000 mprotect(0x7fe58179d000, 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 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555560ed650) = 5035 ./strace-static-x86_64: Process 5035 attached [pid 5035] set_robust_list(0x5555560ed660, 24) = 0 [pid 5035] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5035] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5035] setsid() = 1 [pid 5035] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5035] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5035] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5035] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5035] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5035] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5035] unshare(CLONE_NEWNS) = 0 [pid 5035] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5035] unshare(CLONE_NEWIPC) = 0 [pid 5035] unshare(CLONE_NEWCGROUP) = 0 [pid 5035] unshare(CLONE_NEWUTS) = 0 [pid 5035] unshare(CLONE_SYSVSEM) = 0 [pid 5035] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5035] write(3, "16777216", 8) = 8 [pid 5035] close(3) = 0 [pid 5035] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5035] write(3, "536870912", 9) = 9 [pid 5035] close(3) = 0 [pid 5035] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5035] write(3, "1024", 4) = 4 [pid 5035] close(3) = 0 [pid 5035] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5035] write(3, "8192", 4) = 4 [pid 5035] close(3) = 0 [pid 5035] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5035] write(3, "1024", 4) = 4 [pid 5035] close(3) = 0 [pid 5035] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5035] write(3, "1024", 4) = 4 [pid 5035] close(3) = 0 [pid 5035] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5035] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5035] close(3) = 0 [pid 5035] getpid() = 1 [pid 5035] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 5035] kill(-2, SIGKILL) = 0 [pid 5035] kill(2, SIGKILL) = 0 [pid 5035] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5035] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5035] getdents64(3, 0x5555560ee6f0 /* 2 entries */, 32768) = 48 [pid 5035] getdents64(3, 0x5555560ee6f0 /* 0 entries */, 32768) = 0 [pid 5035] close(3) = 0 [ 76.129194][ T27] cfg80211: failed to load regulatory.db [ 286.046964][ T29] INFO: task kworker/0:2:774 blocked for more than 143 seconds. [ 286.054957][ T29] Not tainted 6.6.0-rc5-syzkaller-00243-g727fb8376504 #0 [ 286.062911][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.071730][ T29] task:kworker/0:2 state:D stack:26608 pid:774 ppid:2 flags:0x00004000 [ 286.081021][ T29] Workqueue: usb_hub_wq hub_event [ 286.086089][ T29] Call Trace: [ 286.089396][ T29] [ 286.092325][ T29] __schedule+0xee1/0x5a10 [ 286.096878][ T29] ? io_schedule_timeout+0x150/0x150 [ 286.102173][ T29] ? reacquire_held_locks+0x4b0/0x4b0 [ 286.107590][ T29] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.112794][ T29] ? lockdep_hardirqs_on+0x7d/0x100 [ 286.118016][ T29] schedule+0xe7/0x1b0 [ 286.122105][ T29] usb_kill_urb.part.0+0x1c6/0x250 [ 286.127301][ T29] ? usb_anchor_suspend_wakeups+0x40/0x40 [ 286.133040][ T29] ? cpuacct_percpu_seq_show+0x10/0x10 [ 286.138563][ T29] ? preempt_count_sub+0x150/0x150 [ 286.143714][ T29] usb_kill_urb+0x83/0xa0 [ 286.148087][ T29] usb_start_wait_urb+0x251/0x4c0 [ 286.153138][ T29] ? usb_api_blocking_completion+0xa0/0xa0 [ 286.159018][ T29] ? rcu_is_watching+0x12/0xb0 [ 286.163799][ T29] usb_control_msg+0x327/0x4a0 [ 286.168598][ T29] ? usb_start_wait_urb+0x4c0/0x4c0 [ 286.173901][ T29] ? hub_resume+0x3e0/0x3e0 [ 286.178708][ T29] get_bMaxPacketSize0.constprop.0+0xa5/0x1c0 [ 286.184797][ T29] hub_port_init+0x680/0x3850 [ 286.189518][ T29] hub_event+0x2b64/0x4e00 [ 286.193959][ T29] ? hub_port_debounce+0x3d0/0x3d0 [ 286.199132][ T29] ? mark_lock+0x331/0x1950 [ 286.203659][ T29] ? lock_sync+0x190/0x190 [ 286.208109][ T29] ? reacquire_held_locks+0x4b0/0x4b0 [ 286.213503][ T29] process_one_work+0x884/0x15c0 [ 286.218488][ T29] ? lock_sync+0x190/0x190 [ 286.222931][ T29] ? init_worker_pool+0x770/0x770 [ 286.227999][ T29] ? assign_work+0x1a0/0x240 [ 286.232605][ T29] worker_thread+0x8b9/0x1290 [ 286.237309][ T29] ? __kthread_parkme+0x14b/0x220 [ 286.242426][ T29] ? process_one_work+0x15c0/0x15c0 [ 286.247647][ T29] kthread+0x33c/0x440 [ 286.251721][ T29] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.256934][ T29] ? kthread_complete_and_exit+0x40/0x40 [ 286.262575][ T29] ret_from_fork+0x45/0x80 [ 286.267029][ T29] ? kthread_complete_and_exit+0x40/0x40 [ 286.272699][ T29] ret_from_fork_asm+0x11/0x20 [ 286.277521][ T29] [ 286.280625][ T29] INFO: task syz-executor629:5038 blocked for more than 143 seconds. [ 286.288734][ T29] Not tainted 6.6.0-rc5-syzkaller-00243-g727fb8376504 #0 [ 286.296275][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.304968][ T29] task:syz-executor629 state:D stack:25536 pid:5038 ppid:5035 flags:0x00004006 [ 286.314212][ T29] Call Trace: [ 286.317514][ T29] [ 286.320448][ T29] __schedule+0xee1/0x5a10 [ 286.324886][ T29] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 286.330892][ T29] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 286.336920][ T29] ? io_schedule_timeout+0x150/0x150 [ 286.342189][ T29] ? __mutex_lock+0x964/0x1340 [ 286.346983][ T29] schedule+0xe7/0x1b0 [ 286.351070][ T29] schedule_preempt_disabled+0x13/0x20 [ 286.356510][ T29] __mutex_lock+0x969/0x1340 [ 286.361125][ T29] ? usbdev_release+0x87/0x4b0 [ 286.365910][ T29] ? mutex_lock_io_nested+0x11a0/0x11a0 [ 286.371478][ T29] ? __fsnotify_parent+0x4fc/0xa10 [ 286.376617][ T29] ? __fsnotify_update_child_dentry_flags+0x360/0x360 [ 286.383412][ T29] ? locks_remove_file+0x399/0x5a0 [ 286.388553][ T29] ? free_async+0x520/0x520 [ 286.393044][ T29] ? usbdev_release+0x87/0x4b0 [ 286.397831][ T29] usbdev_release+0x87/0x4b0 [ 286.402437][ T29] ? free_async+0x520/0x520 [ 286.406968][ T29] __fput+0x3f7/0xa70 [ 286.410989][ T29] __fput_sync+0x47/0x50 [ 286.415227][ T29] __x64_sys_close+0x87/0xf0 [ 286.419856][ T29] do_syscall_64+0x38/0xb0 [ 286.424303][ T29] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 286.430228][ T29] RIP: 0033:0x7fe5817290e0 [ 286.434644][ T29] RSP: 002b:00007ffd1f1fc058 EFLAGS: 00000202 ORIG_RAX: 0000000000000003 [ 286.443094][ T29] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fe5817290e0 [ 286.451163][ T29] RDX: 0000000000000007 RSI: 00007ffd1f1fbb90 RDI: 0000000000000003 [ 286.459173][ T29] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 286.467185][ T29] R10: 0000000000000000 R11: 0000000000000202 R12: 00000000000f4240 [ 286.475157][ T29] R13: 00007ffd1f1fc308 R14: 0000000000000001 R15: 00007ffd1f1fc0a0 [ 286.483260][ T29] [ 286.486324][ T29] [ 286.486324][ T29] Showing all locks held in the system: [ 286.494239][ T29] 1 lock held by khungtaskd/29: [ 286.499135][ T29] #0: ffffffff8cbab2a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 [ 286.509046][ T29] 5 locks held by kworker/0:2/774: [ 286.514356][ T29] #0: ffff888141e5ad38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x787/0x15c0 [ 286.525280][ T29] #1: ffffc90003adfd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7e9/0x15c0 [ 286.536705][ T29] #2: ffff888142f2a190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e00 [ 286.545719][ T29] #3: ffff888142f2e508 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2801/0x4e00 [ 286.555720][ T29] #4: ffff888142ba7768 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x282a/0x4e00 [ 286.565576][ T29] 2 locks held by getty/4790: [ 286.570311][ T29] #0: ffff88802a4fa0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 [ 286.580233][ T29] #1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc5/0x1480 [ 286.590434][ T29] 1 lock held by syz-executor629/5038: [ 286.595931][ T29] #0: ffff888142f2a190 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x87/0x4b0 [ 286.605218][ T29] [ 286.607584][ T29] ============================================= [ 286.607584][ T29] [ 286.615984][ T29] NMI backtrace for cpu 1 [ 286.620317][ T29] CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc5-syzkaller-00243-g727fb8376504 #0 [ 286.630125][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 [ 286.640189][ T29] Call Trace: [ 286.643471][ T29] [ 286.646386][ T29] dump_stack_lvl+0xd9/0x1b0 [ 286.651000][ T29] nmi_cpu_backtrace+0x277/0x380 [ 286.655941][ T29] ? lapic_can_unplug_cpu+0xa0/0xa0 [ 286.661141][ T29] nmi_trigger_cpumask_backtrace+0x299/0x300 [ 286.667112][ T29] watchdog+0xf87/0x1210 [ 286.671350][ T29] ? proc_dohung_task_timeout_secs+0x90/0x90 [ 286.677319][ T29] ? lockdep_hardirqs_on+0x7d/0x100 [ 286.682508][ T29] ? __kthread_parkme+0x14b/0x220 [ 286.687522][ T29] ? proc_dohung_task_timeout_secs+0x90/0x90 [ 286.693492][ T29] kthread+0x33c/0x440 [ 286.697560][ T29] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.702740][ T29] ? kthread_complete_and_exit+0x40/0x40 [ 286.708352][ T29] ret_from_fork+0x45/0x80 [ 286.712748][ T29] ? kthread_complete_and_exit+0x40/0x40 [ 286.718358][ T29] ret_from_fork_asm+0x11/0x20 [ 286.723108][ T29] [ 286.726202][ T29] Sending NMI from CPU 1 to CPUs 0: [ 286.731533][ C0] NMI backtrace for cpu 0 [ 286.731542][ C0] CPU: 0 PID: 1039 Comm: kworker/u4:7 Not tainted 6.6.0-rc5-syzkaller-00243-g727fb8376504 #0 [ 286.731556][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 [ 286.731563][ C0] Workqueue: events_unbound toggle_allocation_gate [ 286.731580][ C0] RIP: 0010:__default_send_IPI_dest_field+0x70/0xf0 [ 286.731599][ C0] Code: 0f b6 03 84 c0 74 04 3c 03 7e 7c 8b 04 25 00 c3 5f ff f6 c4 10 75 e7 44 89 24 25 10 c3 5f ff 89 f0 09 e8 89 04 25 00 c3 5f ff <48> 83 c4 08 5b 5d 41 5c c3 bb e8 03 00 00 eb 16 65 ff 05 19 b5 cb [ 286.731610][ C0] RSP: 0018:ffffc900045af8e0 EFLAGS: 00000002 [ 286.731619][ C0] RAX: 00000000000008fb RBX: fffffbffffebf860 RCX: ffffffff818e7d7b [ 286.731626][ C0] RDX: 0000000000000800 RSI: 00000000000000fb RDI: 0000000002000000 [ 286.731633][ C0] RBP: 0000000000000800 R08: 0000000000000000 R09: fffffbfff1d9c522 [ 286.731640][ C0] R10: ffffffff8ece2917 R11: 0000000000000000 R12: 0000000002000000 [ 286.731647][ C0] R13: dffffc0000000000 R14: 0000000000000001 R15: ffff8880b983d8d0 [ 286.731657][ C0] FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 286.731668][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 286.731676][ C0] CR2: 00007fdf7e240580 CR3: 000000000c976000 CR4: 0000000000350ef0 [ 286.731684][ C0] Call Trace: [ 286.731688][ C0] [ 286.731692][ C0] ? show_regs+0x8f/0xa0 [ 286.731706][ C0] ? nmi_cpu_backtrace+0x1d4/0x380 [ 286.731720][ C0] ? nmi_cpu_backtrace_handler+0xc/0x10 [ 286.731736][ C0] ? nmi_handle+0x1a6/0x570 [ 286.731750][ C0] ? __default_send_IPI_dest_field+0x70/0xf0 [ 286.731766][ C0] ? default_do_nmi+0x69/0x160 [ 286.731782][ C0] ? exc_nmi+0x171/0x1e0 [ 286.731796][ C0] ? end_repeat_nmi+0x16/0x31 [ 286.731814][ C0] ? trace_hardirqs_off+0x5b/0x120 [ 286.731829][ C0] ? __default_send_IPI_dest_field+0x70/0xf0 [ 286.731845][ C0] ? __default_send_IPI_dest_field+0x70/0xf0 [ 286.731861][ C0] ? __default_send_IPI_dest_field+0x70/0xf0 [ 286.731877][ C0] [ 286.731880][ C0] [ 286.731883][ C0] ? _flat_send_IPI_mask+0x30/0x70 [ 286.731895][ C0] ? on_each_cpu_cond_mask+0x40/0x90 [ 286.731912][ C0] _flat_send_IPI_mask+0x40/0x70 [ 286.731924][ C0] smp_call_function_many_cond+0x12df/0x1570 [ 286.731943][ C0] ? __text_poke+0xc90/0xc90 [ 286.731954][ C0] ? __kmem_cache_alloc_node+0xc3/0x340 [ 286.731974][ C0] ? generic_smp_call_function_single_interrupt+0x20/0x20 [ 286.731993][ C0] ? apply_relocation+0x830/0x830 [ 286.732005][ C0] ? __text_poke+0xc90/0xc90 [ 286.732015][ C0] on_each_cpu_cond_mask+0x40/0x90 [ 286.732032][ C0] ? __kmem_cache_alloc_node+0xc3/0x340 [ 286.732054][ C0] text_poke_bp_batch+0x746/0x960 [ 286.732066][ C0] ? __kmem_cache_alloc_node+0xc4/0x340 [ 286.732085][ C0] ? do_sync_core+0x40/0x40 [ 286.732095][ C0] ? __jump_label_patch+0x1db/0x3f0 [ 286.732111][ C0] ? text_poke_queue+0xef/0x180 [ 286.732122][ C0] ? arch_jump_label_transform_queue+0xc0/0x110 [ 286.732141][ C0] text_poke_finish+0x30/0x40 [ 286.732153][ C0] arch_jump_label_transform_apply+0x1c/0x30 [ 286.732170][ C0] jump_label_update+0x32e/0x410 [ 286.732190][ C0] static_key_enable_cpuslocked+0x1b5/0x270 [ 286.732209][ C0] static_key_enable+0x1a/0x20 [ 286.732226][ C0] toggle_allocation_gate+0xf4/0x250 [ 286.732242][ C0] ? wake_up_kfence_timer+0x30/0x30 [ 286.732259][ C0] process_one_work+0x884/0x15c0 [ 286.732276][ C0] ? lock_sync+0x190/0x190 [ 286.732293][ C0] ? init_worker_pool+0x770/0x770 [ 286.732309][ C0] ? assign_work+0x1a0/0x240 [ 286.732323][ C0] worker_thread+0x8b9/0x1290 [ 286.732341][ C0] ? process_one_work+0x15c0/0x15c0 [ 286.732355][ C0] kthread+0x33c/0x440 [ 286.732367][ C0] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.732378][ C0] ? kthread_complete_and_exit+0x40/0x40 [ 286.732392][ C0] ret_from_fork+0x45/0x80 [ 286.732405][ C0] ? kthread_complete_and_exit+0x40/0x40 [ 286.732418][ C0] ret_from_fork_asm+0x11/0x20 [ 286.732439][ C0] [ 286.732574][ T29] Kernel panic - not syncing: hung_task: blocked tasks [ 286.732583][ T29] CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc5-syzkaller-00243-g727fb8376504 #0 [ 286.732599][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 [ 286.732609][ T29] Call Trace: [ 286.732614][ T29] [ 286.732620][ T29] dump_stack_lvl+0xd9/0x1b0 [ 286.732640][ T29] panic+0x6a6/0x750 [ 286.732660][ T29] ? panic_smp_self_stop+0xa0/0xa0 [ 286.732682][ T29] ? lapic_can_unplug_cpu+0xa0/0xa0 [ 286.732704][ T29] ? preempt_schedule_thunk+0x1a/0x30 [ 286.732730][ T29] ? watchdog+0xd3e/0x1210 [ 286.732748][ T29] watchdog+0xd4f/0x1210 [ 286.732768][ T29] ? proc_dohung_task_timeout_secs+0x90/0x90 [ 286.732783][ T29] ? lockdep_hardirqs_on+0x7d/0x100 [ 286.732808][ T29] ? __kthread_parkme+0x14b/0x220 [ 286.732825][ T29] ? proc_dohung_task_timeout_secs+0x90/0x90 [ 286.732842][ T29] kthread+0x33c/0x440 [ 286.732858][ T29] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.732874][ T29] ? kthread_complete_and_exit+0x40/0x40 [ 286.732893][ T29] ret_from_fork+0x45/0x80 [ 286.732911][ T29] ? kthread_complete_and_exit+0x40/0x40 [ 286.732930][ T29] ret_from_fork_asm+0x11/0x20 [ 286.732961][ T29] [ 286.737871][ T29] Kernel Offset: disabled [ 287.245396][ T29] Rebooting in 86400 seconds..