[ 256.217913][ T5075] Bluetooth: hci0: command 0x0409 tx timeout [ 258.297850][ T5075] Bluetooth: hci0: command 0x041b tx timeout [ 260.377950][ T5075] Bluetooth: hci0: command 0x040f tx timeout [ 262.458006][ T5075] Bluetooth: hci0: command 0x0419 tx timeout [ 281.747841][ T1094] block nbd0: Possible stuck request ffff88801f2a1200: control (read@0,4096B). Runtime 210 seconds [ 311.817968][ T1094] block nbd0: Possible stuck request ffff88801f2a1200: control (read@0,4096B). Runtime 240 seconds [ 341.898044][ T1094] block nbd0: Possible stuck request ffff88801f2a1200: control (read@0,4096B). Runtime 270 seconds [ 371.977839][ T1094] block nbd0: Possible stuck request ffff88801f2a1200: control (read@0,4096B). Runtime 300 seconds [ 379.817763][ T5075] Bluetooth: hci0: command 0x0406 tx timeout [ 402.061020][ T1094] block nbd0: Possible stuck request ffff88801f2a1200: control (read@0,4096B). Runtime 330 seconds Warning: Permanently added '10.128.10.51' (ECDSA) to the list of known hosts. [ 428.937873][ T28] INFO: task udevd:5076 blocked for more than 143 seconds. [ 428.945341][ T28] Not tainted 6.4.0-rc1-syzkaller-gba0ad6ed89fd #0 [ 428.952688][ T28] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 428.961391][ T28] task:udevd state:D stack:26480 pid:5076 ppid:4454 flags:0x00004006 [ 428.970616][ T28] Call Trace: [ 428.973892][ T28] [ 428.976812][ T28] __schedule+0xc9a/0x5880 [ 428.981307][ T28] ? mark_lock.part.0+0xee/0x1970 [ 428.986348][ T28] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 428.992360][ T28] ? __lock_acquire+0xbe1/0x5df0 [ 428.997718][ T28] ? io_schedule_timeout+0x150/0x150 [ 429.003097][ T28] ? find_held_lock+0x2d/0x110 [ 429.007894][ T28] ? lock_downgrade+0x690/0x690 [ 429.012762][ T28] schedule+0xde/0x1a0 [ 429.016817][ T28] io_schedule+0xbe/0x130 [ 429.021342][ T28] folio_wait_bit_common+0x394/0x9b0 [ 429.026679][ T28] ? filemap_get_folios_contig+0xa70/0xa70 [ 429.032612][ T28] ? filemap_get_entry+0x225/0x430 [ 429.038024][ T28] ? __folio_lock_or_retry+0x240/0x240 [ 429.043502][ T28] ? folio_unlock+0xd0/0xd0 [ 429.048080][ T28] __filemap_get_folio+0x789/0x990 [ 429.053229][ T28] truncate_inode_pages_range+0x350/0xf10 [ 429.059033][ T28] ? truncate_inode_partial_folio+0x750/0x750 [ 429.065120][ T28] ? has_bh_in_lru+0x8f/0xe0 [ 429.069761][ T28] ? smp_call_function_many_cond+0x40a/0x15a0 [ 429.075843][ T28] ? generic_remap_file_range_prep+0x50/0x50 [ 429.081967][ T28] ? __brelse+0xa0/0xa0 [ 429.086233][ T28] ? trace_ipi_send_cpu+0x1d0/0x1d0 [ 429.091568][ T28] ? mutex_lock_io_nested+0x11a0/0x11a0 [ 429.097122][ T28] ? __brelse+0xa0/0xa0 [ 429.101407][ T28] blkdev_flush_mapping+0x152/0x320 [ 429.106648][ T28] blkdev_put_whole+0xcb/0xf0 [ 429.111365][ T28] blkdev_put+0x220/0x780 [ 429.115703][ T28] blkdev_close+0x68/0x80 [ 429.120171][ T28] __fput+0x27c/0xa90 [ 429.124160][ T28] ? blkdev_fsync+0xa0/0xa0 [ 429.128695][ T28] task_work_run+0x16f/0x270 [ 429.133376][ T28] ? task_work_cancel+0x30/0x30 [ 429.138306][ T28] ? do_raw_spin_unlock+0x175/0x230 [ 429.143526][ T28] do_exit+0xad3/0x2960 [ 429.147921][ T28] ? find_held_lock+0x2d/0x110 [ 429.152743][ T28] ? get_signal+0x89d/0x25b0 [ 429.157341][ T28] ? mm_update_next_owner+0x7b0/0x7b0 [ 429.162904][ T28] ? do_raw_spin_lock+0x124/0x2b0 [ 429.168287][ T28] ? spin_bug+0x1c0/0x1c0 [ 429.172705][ T28] do_group_exit+0xd4/0x2a0 [ 429.177248][ T28] get_signal+0x2315/0x25b0 [ 429.181960][ T28] ? exit_signals+0x910/0x910 [ 429.186649][ T28] ? do_sys_openat2+0xa1/0x4c0 [ 429.191451][ T28] arch_do_signal_or_restart+0x79/0x5c0 [ 429.197011][ T28] ? get_sigframe_size+0x10/0x10 [ 429.201998][ T28] ? __ia32_sys_open+0x1c0/0x1c0 [ 429.206954][ T28] exit_to_user_mode_prepare+0x11f/0x240 [ 429.212626][ T28] syscall_exit_to_user_mode+0x1d/0x50 [ 429.218156][ T28] do_syscall_64+0x46/0xb0 [ 429.222586][ T28] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 429.228518][ T28] RIP: 0033:0x7f0c469169a4 [ 429.232936][ T28] RSP: 002b:00007ffe6c4c2be0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 429.241414][ T28] RAX: 0000000000000008 RBX: 00005634bf0f0d00 RCX: 00007f0c469169a4 [ 429.249612][ T28] RDX: 00000000000a0800 RSI: 00005634bf0d0850 RDI: 00000000ffffff9c [ 429.257583][ T28] RBP: 00005634bf0d0850 R08: 0000000000000001 R09: 00007ffe6c551080 [ 429.265914][ T28] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800 [ 429.274108][ T28] R13: 00005634bf0e1760 R14: 0000000000000001 R15: 00005634bf0cf910 [ 429.282212][ T28] [ 429.285323][ T28] INFO: task syz-executor.0:5157 blocked for more than 143 seconds. [ 429.293532][ T28] Not tainted 6.4.0-rc1-syzkaller-gba0ad6ed89fd #0 [ 429.300637][ T28] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 429.309424][ T28] task:syz-executor.0 state:D stack:28448 pid:5157 ppid:5135 flags:0x00000004 [ 429.319059][ T28] Call Trace: [ 429.322381][ T28] [ 429.325316][ T28] __schedule+0xc9a/0x5880 [ 429.329768][ T28] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 429.335767][ T28] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 429.341798][ T28] ? io_schedule_timeout+0x150/0x150 [ 429.347098][ T28] ? __mutex_lock+0xa36/0x1350 [ 429.351914][ T28] schedule+0xde/0x1a0 [ 429.355997][ T28] schedule_preempt_disabled+0x13/0x20 [ 429.361625][ T28] __mutex_lock+0xa3b/0x1350 [ 429.366405][ T28] ? blkdev_get_by_dev.part.0+0x95/0xb80 [ 429.372456][ T28] ? mutex_lock_io_nested+0x11a0/0x11a0 [ 429.378260][ T28] ? _atomic_dec_and_lock+0x96/0x100 [ 429.383795][ T28] ? disk_block_events+0x21/0x140 [ 429.388932][ T28] blkdev_get_by_dev.part.0+0x95/0xb80 [ 429.394405][ T28] ? devcgroup_check_permission+0x1aa/0x4a0 [ 429.400421][ T28] blkdev_get_by_dev+0x6f/0x90 [ 429.405206][ T28] blkdev_open+0x140/0x2d0 [ 429.409664][ T28] do_dentry_open+0x6cc/0x13f0 [ 429.414700][ T28] ? blkdev_close+0x80/0x80 [ 429.419247][ T28] path_openat+0x1baa/0x2750 [ 429.423977][ T28] ? path_lookupat+0x840/0x840 [ 429.428804][ T28] do_filp_open+0x1ba/0x410 [ 429.433329][ T28] ? may_open_dev+0xf0/0xf0 [ 429.437903][ T28] ? find_held_lock+0x2d/0x110 [ 429.442853][ T28] ? do_raw_spin_lock+0x124/0x2b0 [ 429.447998][ T28] ? spin_bug+0x1c0/0x1c0 [ 429.452366][ T28] ? _raw_spin_unlock+0x28/0x40 [ 429.457203][ T28] ? alloc_fd+0x2e4/0x750 [ 429.461575][ T28] do_sys_openat2+0x16d/0x4c0 [ 429.466297][ T28] ? build_open_flags+0x720/0x720 [ 429.471406][ T28] ? do_user_addr_fault+0x367/0x1210 [ 429.476812][ T28] ? lock_downgrade+0x690/0x690 [ 429.481955][ T28] __x64_sys_openat+0x143/0x1f0 [ 429.487104][ T28] ? __ia32_sys_open+0x1c0/0x1c0 [ 429.492171][ T28] ? syscall_enter_from_user_mode+0x26/0x80 [ 429.498176][ T28] do_syscall_64+0x39/0xb0 [ 429.502630][ T28] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 429.508600][ T28] RIP: 0033:0x418484 [ 429.512582][ T28] RSP: 002b:00007f8742cb8cc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 [ 429.521222][ T28] RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 0000000000418484 [ 429.529287][ T28] RDX: 0000000000000000 RSI: 00007f8742cb8d60 RDI: 00000000ffffff9c [ 429.537531][ T28] RBP: 00007f8742cb8d60 R08: 0000000000000000 R09: 002364626e2f7665 [ 429.545593][ T28] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 429.553603][ T28] R13: 00007ffcb939b7cf R14: 00007f8742cb9300 R15: 0000000000022000 [ 429.561677][ T28] [ 429.564714][ T28] [ 429.564714][ T28] Showing all locks held in the system: [ 429.572606][ T28] 1 lock held by rcu_tasks_kthre/13: [ 429.577982][ T28] #0: ffffffff8c798430 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 [ 429.588588][ T28] 1 lock held by rcu_tasks_trace/14: [ 429.593868][ T28] #0: ffffffff8c798130 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 [ 429.605053][ T28] 1 lock held by khungtaskd/28: [ 429.609917][ T28] #0: ffffffff8c799040 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 [ 429.619819][ T28] 2 locks held by getty/4756: [ 429.624504][ T28] #0: ffff88814ae7e098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 [ 429.634288][ T28] #1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 [ 429.644518][ T28] 1 lock held by udevd/5076: [ 429.649125][ T28] #0: ffff888140bdb4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xba/0x780 [ 429.658525][ T28] 1 lock held by syz-executor.0/5157: [ 429.663985][ T28] #0: ffff888140bdb4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x95/0xb80 [ 429.674879][ T28] 1 lock held by syz-executor156/5172: [ 429.680413][ T28] #0: ffff888140bdb4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x95/0xb80 [ 429.691019][ T28] [ 429.693348][ T28] ============================================= [ 429.693348][ T28] [ 429.701805][ T28] NMI backtrace for cpu 0 [ 429.706214][ T28] CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc1-syzkaller-gba0ad6ed89fd #0 [ 429.715481][ T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 [ 429.725518][ T28] Call Trace: [ 429.728786][ T28] [ 429.731823][ T28] dump_stack_lvl+0xd9/0x150 [ 429.736417][ T28] nmi_cpu_backtrace+0x29c/0x350 [ 429.741444][ T28] ? lapic_can_unplug_cpu+0xa0/0xa0 [ 429.746653][ T28] nmi_trigger_cpumask_backtrace+0x2a4/0x300 [ 429.752626][ T28] watchdog+0xe16/0x1090 [ 429.756858][ T28] ? proc_dohung_task_timeout_secs+0x80/0x80 [ 429.762829][ T28] kthread+0x344/0x440 [ 429.766882][ T28] ? kthread_complete_and_exit+0x40/0x40 [ 429.772525][ T28] ret_from_fork+0x1f/0x30 [ 429.776932][ T28] [ 429.780020][ T28] Sending NMI from CPU 0 to CPUs 1: [ 429.785237][ C1] NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt+0x40/0x50 [ 429.786225][ T28] Kernel panic - not syncing: hung_task: blocked tasks [ 429.801352][ T28] CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc1-syzkaller-gba0ad6ed89fd #0 [ 429.810619][ T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 [ 429.820657][ T28] Call Trace: [ 429.823930][ T28] [ 429.826846][ T28] dump_stack_lvl+0xd9/0x150 [ 429.831516][ T28] panic+0x686/0x730 [ 429.835398][ T28] ? panic_smp_self_stop+0xa0/0xa0 [ 429.840505][ T28] ? irq_work_claim+0x76/0x90 [ 429.845173][ T28] ? lapic_can_unplug_cpu+0xa0/0xa0 [ 429.850359][ T28] ? irq_work_queue+0x2d/0x80 [ 429.855026][ T28] ? watchdog+0xbe8/0x1090 [ 429.859437][ T28] watchdog+0xbf9/0x1090 [ 429.863676][ T28] ? proc_dohung_task_timeout_secs+0x80/0x80 [ 429.869828][ T28] kthread+0x344/0x440 [ 429.873887][ T28] ? kthread_complete_and_exit+0x40/0x40 [ 429.879517][ T28] ret_from_fork+0x1f/0x30 [ 429.883937][ T28] [ 429.887881][ T28] Kernel Offset: disabled [ 429.892191][ T28] Rebooting in 86400 seconds..