DUID 00:04:53:46:a9:9d:03:7a:46:b2:48:ff:4a:ea:3f:46:f2:43 forked to background, child pid 3185 [ 26.595858][ T3186] 8021q: adding VLAN 0 to HW filter on device bond0 [ 26.605342][ T3186] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller syzkaller login: [ 76.162214][ T6] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.0.206' (ECDSA) to the list of known hosts. executing program [ 484.971885][ T3637] nbd0: detected capacity change from 0 to -4194304 [ 489.920288][ T3637] block nbd0: shutting down sockets [ 515.199330][ T9] block nbd0: Possible stuck request ffff88801df28000: control (read@0,4096B). Runtime 30 seconds [ 545.058949][ T2973] udevd[2973]: worker [3639] /devices/virtual/block/nbd0 is taking a long time [ 545.279277][ T9] block nbd0: Possible stuck request ffff88801df28000: control (read@0,4096B). Runtime 60 seconds [ 575.359279][ T9] block nbd0: Possible stuck request ffff88801df28000: control (read@0,4096B). Runtime 90 seconds [ 605.439314][ T9] block nbd0: Possible stuck request ffff88801df28000: control (read@0,4096B). Runtime 120 seconds [ 635.519358][ T9] block nbd0: Possible stuck request ffff88801df28000: control (read@0,4096B). Runtime 150 seconds executing program [ 665.221623][ T2973] udevd[2973]: worker [3639] /devices/virtual/block/nbd0 timeout; kill it [ 665.230436][ T2973] udevd[2973]: seq 7486 '/devices/virtual/block/nbd0' killed [ 665.230535][ T3639] ldm_validate_partition_table(): Disk read failed. [ 665.244552][ T3639] Dev nbd0: unable to read RDB block 0 [ 665.250124][ T3639] nbd0: unable to read partition table [ 665.255762][ T3639] nbd0: partition table beyond EOD, truncated [ 665.267626][ T2973] udevd[2973]: worker [3639] terminated by signal 9 (Killed) [ 665.275323][ T2973] udevd[2973]: worker [3639] failed while handling '/devices/virtual/block/nbd0' [ 665.599257][ T9] block nbd0: Possible stuck request ffff88801df28000: control (read@0,4096B). Runtime 180 seconds [ 695.679295][ T9] block nbd0: Possible stuck request ffff88801df28000: control (read@0,4096B). Runtime 210 seconds [ 725.759262][ T9] block nbd0: Possible stuck request ffff88801df28000: control (read@0,4096B). Runtime 240 seconds [ 755.839265][ T9] block nbd0: Possible stuck request ffff88801df28000: control (read@0,4096B). Runtime 270 seconds [ 785.919232][ T9] block nbd0: Possible stuck request ffff88801df28000: control (read@0,4096B). Runtime 300 seconds [ 815.999271][ T9] block nbd0: Possible stuck request ffff88801df28000: control (read@0,4096B). Runtime 330 seconds [ 846.079211][ T9] block nbd0: Possible stuck request ffff88801df28000: control (read@0,4096B). Runtime 360 seconds [ 859.519259][ T28] INFO: task syz-executor379:3646 blocked for more than 143 seconds. [ 859.527494][ T28] Not tainted 5.19.0-next-20220809-syzkaller #0 [ 859.534558][ T28] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 859.543477][ T28] task:syz-executor379 state:D stack:27432 pid:3646 ppid:3636 flags:0x00000004 [ 859.552891][ T28] Call Trace: [ 859.556189][ T28] [ 859.559206][ T28] __schedule+0xadf/0x52b0 [ 859.563765][ T28] ? io_schedule_timeout+0x140/0x140 [ 859.569098][ T28] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 859.574953][ T28] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 859.580828][ T28] schedule+0xda/0x1b0 [ 859.584921][ T28] blk_mq_freeze_queue_wait+0x112/0x160 [ 859.590645][ T28] ? blk_mq_queue_inflight+0xa0/0xa0 [ 859.596009][ T28] ? blk_mq_run_hw_queue+0x490/0x490 [ 859.601375][ T28] ? prepare_to_wait_exclusive+0x2b0/0x2b0 [ 859.607279][ T28] nbd_add_socket+0x166/0x810 [ 859.612078][ T28] ? apparmor_capable+0x1d8/0x460 [ 859.617215][ T28] ? nbd_alloc_config.part.0+0x180/0x180 [ 859.623291][ T28] ? bpf_lsm_capable+0x5/0x10 [ 859.628030][ T28] ? security_capable+0x8f/0xc0 [ 859.632999][ T28] nbd_ioctl+0x4ab/0xbd0 [ 859.637275][ T28] ? blkdev_bszset+0x1f0/0x1f0 [ 859.642123][ T28] ? nbd_start_device+0xc30/0xc30 [ 859.647169][ T28] ? __ct_user_exit+0xff/0x150 [ 859.651993][ T28] ? lock_downgrade+0x6e0/0x6e0 [ 859.656862][ T28] ? nbd_start_device+0xc30/0xc30 [ 859.661945][ T28] blkdev_ioctl+0x36e/0x800 [ 859.666478][ T28] ? blkdev_common_ioctl+0x1a30/0x1a30 [ 859.671976][ T28] ? bpf_lsm_file_ioctl+0x5/0x10 [ 859.676926][ T28] ? blkdev_common_ioctl+0x1a30/0x1a30 [ 859.682456][ T28] __x64_sys_ioctl+0x193/0x200 [ 859.687237][ T28] do_syscall_64+0x35/0xb0 [ 859.691686][ T28] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 859.697596][ T28] RIP: 0033:0x7f72c2a5f399 [ 859.703642][ T28] RSP: 002b:00007ffc8dcc8b78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 859.712086][ T28] RAX: ffffffffffffffda RBX: 000000000007661f RCX: 00007f72c2a5f399 [ 859.720118][ T28] RDX: 0000000000000004 RSI: 000000000000ab00 RDI: 0000000000000003 [ 859.728094][ T28] RBP: 0000000000000000 R08: 00007ffc8dcc8d18 R09: 00007ffc8dcc8d18 [ 859.736528][ T28] R10: 00007ffc8dcc85f0 R11: 0000000000000246 R12: 00007ffc8dcc8b8c [ 859.744872][ T28] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 859.753118][ T28] [ 859.757167][ T28] [ 859.757167][ T28] Showing all threads with locks held in the system: [ 859.766361][ T28] task:rcu_tasks_kthre state:I stack:29000 pid:12 ppid:2 flags:0x00004000 [ 859.775825][ T28] Call Trace: [ 859.779459][ T28] [ 859.782412][ T28] __schedule+0xadf/0x52b0 [ 859.786832][ T28] ? find_held_lock+0x2d/0x110 [ 859.791903][ T28] ? rcu_tasks_one_gp+0x6f5/0xc70 [ 859.796939][ T28] ? io_schedule_timeout+0x140/0x140 [ 859.802626][ T28] ? mark_held_locks+0x9f/0xe0 [ 859.807390][ T28] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 859.813496][ T28] schedule+0xda/0x1b0 [ 859.817571][ T28] rcu_tasks_one_gp+0x3e5/0xc70 [ 859.822670][ T28] rcu_tasks_kthread+0x73/0xa0 [ 859.827439][ T28] ? synchronize_rcu_tasks_trace+0x60/0x60 [ 859.833529][ T28] kthread+0x2e4/0x3a0 [ 859.837598][ T28] ? kthread_complete_and_exit+0x40/0x40 [ 859.843448][ T28] ret_from_fork+0x1f/0x30 [ 859.847874][ T28] [ 859.851017][ T28] 1 lock held by rcu_tasks_kthre/12: [ 859.856327][ T28] #0: ffffffff8bf889b0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 [ 859.866937][ T28] task:rcu_tasks_trace state:I stack:29120 pid:13 ppid:2 flags:0x00004000 [ 859.876448][ T28] Call Trace: [ 859.879835][ T28] [ 859.882792][ T28] __schedule+0xadf/0x52b0 [ 859.887217][ T28] ? find_held_lock+0x2d/0x110 [ 859.892037][ T28] ? rcu_tasks_one_gp+0x6f5/0xc70 [ 859.897179][ T28] ? io_schedule_timeout+0x140/0x140 [ 859.902530][ T28] ? mark_held_locks+0x9f/0xe0 [ 859.907312][ T28] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 859.913168][ T28] schedule+0xda/0x1b0 [ 859.917259][ T28] rcu_tasks_one_gp+0x3e5/0xc70 [ 859.922193][ T28] rcu_tasks_kthread+0x73/0xa0 [ 859.926974][ T28] ? synchronize_rcu_tasks_trace+0x60/0x60 [ 859.932859][ T28] kthread+0x2e4/0x3a0 [ 859.937048][ T28] ? kthread_complete_and_exit+0x40/0x40 [ 859.942774][ T28] ret_from_fork+0x1f/0x30 [ 859.947302][ T28] [ 859.950365][ T28] 1 lock held by rcu_tasks_trace/13: [ 859.955659][ T28] #0: ffffffff8bf886b0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 [ 859.966785][ T28] task:klogd state:R running task stack:25504 pid:2962 ppid:1 flags:0x00000000 [ 859.977651][ T28] Call Trace: [ 859.981016][ T28] [ 859.983983][ T28] ? __schedule+0xadf/0x52b0 [ 859.988678][ T28] ? get_data+0x5d0/0x5d0 [ 859.993083][ T28] ? prepare_to_wait_event+0xc8/0x6a0 [ 859.998508][ T28] ? io_schedule_timeout+0x140/0x140 [ 860.003894][ T28] ? prb_read_valid+0x75/0xa0 [ 860.008647][ T28] ? prb_final_commit+0xa0/0xa0 [ 860.013629][ T28] ? schedule+0xda/0x1b0 [ 860.017898][ T28] ? syslog_print+0x1c2/0x580 [ 860.022671][ T28] ? record_print_text+0x3e0/0x3e0 [ 860.027809][ T28] ? prepare_to_wait_exclusive+0x2b0/0x2b0 [ 860.033661][ T28] ? __sys_sendto+0x25f/0x340 [ 860.038432][ T28] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 860.044482][ T28] ? find_held_lock+0x2d/0x110 [ 860.049283][ T28] ? do_syslog.part.0+0x1db/0x5f0 [ 860.054301][ T28] ? lock_downgrade+0x6e0/0x6e0 [ 860.059225][ T28] ? __wake_up_klogd.part.0+0xf0/0xf0 [ 860.064609][ T28] ? lock_downgrade+0x6e0/0x6e0 [ 860.069492][ T28] ? apparmor_capable+0x1d8/0x460 [ 860.074531][ T28] ? bpf_lsm_capable+0x5/0x10 [ 860.079265][ T28] ? security_capable+0x8f/0xc0 [ 860.084137][ T28] ? bpf_lsm_syslog+0x5/0x10 [ 860.088723][ T28] ? security_syslog+0x73/0x90 [ 860.093556][ T28] ? __x64_sys_syslog+0x97/0xc0 [ 860.098433][ T28] ? do_syscall_64+0x35/0xb0 [ 860.103160][ T28] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 860.109485][ T28] [ 860.112505][ T28] no locks held by klogd/2962. [ 860.117253][ T28] task:getty state:S stack:23392 pid:3285 ppid:1 flags:0x00000000 [ 860.126558][ T28] Call Trace: [ 860.129863][ T28] [ 860.132806][ T28] __schedule+0xadf/0x52b0 [ 860.137229][ T28] ? io_schedule_timeout+0x140/0x140 [ 860.142573][ T28] schedule+0xda/0x1b0 [ 860.146657][ T28] schedule_timeout+0x1db/0x2a0 [ 860.151547][ T28] ? usleep_range_state+0x1b0/0x1b0 [ 860.156766][ T28] ? __up_read+0x192/0x720 [ 860.161238][ T28] ? down_read+0x198/0x450 [ 860.165672][ T28] ? up_write+0x470/0x470 [ 860.170048][ T28] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 860.175896][ T28] wait_woken+0x18b/0x1f0 [ 860.180278][ T28] n_tty_read+0x1051/0x13e0 [ 860.184895][ T28] ? n_tty_open+0x170/0x170 [ 860.189445][ T28] ? __init_waitqueue_head+0x150/0x150 [ 860.194923][ T28] tty_read+0x33a/0x5d0 [ 860.199170][ T28] ? do_SAK+0x70/0x70 [ 860.203184][ T28] ? fsnotify_perm.part.0+0x221/0x610 [ 860.208571][ T28] ? apparmor_file_permission+0x264/0x4e0 [ 860.214335][ T28] ? security_file_permission+0xab/0xd0 [ 860.219975][ T28] vfs_read+0x67d/0x930 [ 860.224190][ T28] ? kernel_read+0x1c0/0x1c0 [ 860.228872][ T28] ? __ct_user_exit+0xff/0x150 [ 860.233700][ T28] ? lock_downgrade+0x6e0/0x6e0 [ 860.238620][ T28] ? lock_downgrade+0x6e0/0x6e0 [ 860.243566][ T28] ? __fget_light+0x20a/0x270 [ 860.248263][ T28] ksys_read+0x127/0x250 [ 860.252550][ T28] ? vfs_write+0xdd0/0xdd0 [ 860.256984][ T28] ? syscall_enter_from_user_mode+0x22/0xb0 [ 860.262948][ T28] do_syscall_64+0x35/0xb0 [ 860.267380][ T28] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 860.273312][ T28] RIP: 0033:0x7f55aa5a58fe [ 860.277752][ T28] RSP: 002b:00007ffff583eb18 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 860.286217][ T28] RAX: ffffffffffffffda RBX: 000055ab76486910 RCX: 00007f55aa5a58fe [ 860.294249][ T28] RDX: 0000000000000001 RSI: 00007ffff583eb30 RDI: 0000000000000000 [ 860.302266][ T28] RBP: 000055ab76486970 R08: 0000000000000007 R09: 000055ab76487cd0 [ 860.310283][ T28] R10: 0000000000000063 R11: 0000000000000246 R12: 000055ab764869ac [ 860.318245][ T28] R13: 00007ffff583eb30 R14: 0000000000000000 R15: 000055ab764869ac [ 860.326281][ T28] [ 860.329325][ T28] 2 locks held by getty/3285: [ 860.333988][ T28] #0: ffff88814a913098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 [ 860.343785][ T28] #1: ffffc90002d262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef0/0x13e0 [ 860.353983][ T28] task:syz-executor379 state:D stack:27432 pid:3646 ppid:3636 flags:0x00000004 [ 860.363255][ T28] Call Trace: [ 860.366567][ T28] [ 860.369553][ T28] __schedule+0xadf/0x52b0 [ 860.374041][ T28] ? io_schedule_timeout+0x140/0x140 [ 860.379386][ T28] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 860.385215][ T28] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 860.391069][ T28] schedule+0xda/0x1b0 [ 860.395153][ T28] blk_mq_freeze_queue_wait+0x112/0x160 [ 860.400762][ T28] ? blk_mq_queue_inflight+0xa0/0xa0 [ 860.406150][ T28] ? blk_mq_run_hw_queue+0x490/0x490 [ 860.411481][ T28] ? prepare_to_wait_exclusive+0x2b0/0x2b0 [ 860.417322][ T28] nbd_add_socket+0x166/0x810 [ 860.422058][ T28] ? apparmor_capable+0x1d8/0x460 [ 860.427096][ T28] ? nbd_alloc_config.part.0+0x180/0x180 [ 860.432763][ T28] ? bpf_lsm_capable+0x5/0x10 [ 860.437460][ T28] ? security_capable+0x8f/0xc0 [ 860.442393][ T28] nbd_ioctl+0x4ab/0xbd0 [ 860.446661][ T28] ? blkdev_bszset+0x1f0/0x1f0 [ 860.451457][ T28] ? nbd_start_device+0xc30/0xc30 [ 860.456506][ T28] ? __ct_user_exit+0xff/0x150 [ 860.461341][ T28] ? lock_downgrade+0x6e0/0x6e0 [ 860.466214][ T28] ? nbd_start_device+0xc30/0xc30 [ 860.471281][ T28] blkdev_ioctl+0x36e/0x800 [ 860.475799][ T28] ? blkdev_common_ioctl+0x1a30/0x1a30 [ 860.481330][ T28] ? bpf_lsm_file_ioctl+0x5/0x10 [ 860.486298][ T28] ? blkdev_common_ioctl+0x1a30/0x1a30 [ 860.491828][ T28] __x64_sys_ioctl+0x193/0x200 [ 860.496620][ T28] do_syscall_64+0x35/0xb0 [ 860.501102][ T28] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 860.507008][ T28] RIP: 0033:0x7f72c2a5f399 [ 860.511448][ T28] RSP: 002b:00007ffc8dcc8b78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 860.519914][ T28] RAX: ffffffffffffffda RBX: 000000000007661f RCX: 00007f72c2a5f399 [ 860.527895][ T28] RDX: 0000000000000004 RSI: 000000000000ab00 RDI: 0000000000000003 [ 860.535916][ T28] RBP: 0000000000000000 R08: 00007ffc8dcc8d18 R09: 00007ffc8dcc8d18 [ 860.543985][ T28] R10: 00007ffc8dcc85f0 R11: 0000000000000246 R12: 00007ffc8dcc8b8c [ 860.551995][ T28] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 860.560095][ T28] [ 860.563110][ T28] 1 lock held by syz-executor379/3646: [ 860.568555][ T28] #0: ffff888147440198 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x151/0xbd0 [ 860.577922][ T28] [ 860.580282][ T28] ============================================= [ 860.580282][ T28] [ 860.588673][ T28] NMI backtrace for cpu 0 [ 860.593010][ T28] CPU: 0 PID: 28 Comm: khungtaskd Not tainted 5.19.0-next-20220809-syzkaller #0 [ 860.602020][ T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 860.612077][ T28] Call Trace: [ 860.615378][ T28] [ 860.618307][ T28] dump_stack_lvl+0xcd/0x134 [ 860.622991][ T28] nmi_cpu_backtrace.cold+0x46/0x14f [ 860.628288][ T28] ? lockdep_hardirqs_off+0x90/0xd0 [ 860.633597][ T28] ? lapic_can_unplug_cpu+0x80/0x80 [ 860.638815][ T28] nmi_trigger_cpumask_backtrace+0x206/0x250 [ 860.644840][ T28] watchdog+0xcf7/0xfd0 [ 860.649027][ T28] ? proc_dohung_task_timeout_secs+0x80/0x80 [ 860.655032][ T28] kthread+0x2e4/0x3a0 [ 860.659109][ T28] ? kthread_complete_and_exit+0x40/0x40 [ 860.664756][ T28] ret_from_fork+0x1f/0x30 [ 860.669198][ T28] [ 860.672350][ T28] Sending NMI from CPU 0 to CPUs 1: [ 860.677581][ C1] NMI backtrace for cpu 1 [ 860.677592][ C1] CPU: 1 PID: 8 Comm: kworker/u4:0 Not tainted 5.19.0-next-20220809-syzkaller #0 [ 860.677611][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 860.677623][ C1] Workqueue: events_unbound toggle_allocation_gate [ 860.677657][ C1] RIP: 0010:load_new_mm_cr3+0x7e/0x110 [ 860.677680][ C1] Code: 48 8b 05 dd ac a7 0c a9 00 00 02 00 74 68 48 89 ef e8 46 f8 ff ff 48 89 c6 83 c3 01 0f b7 c3 48 09 f0 48 0f ba e8 3f 0f 22 d8 <5b> 5d c3 66 85 f6 75 5a 48 89 ef e8 22 f8 ff ff eb eb 0f 0b 48 c7 [ 860.677697][ C1] RSP: 0018:ffffc900000d7968 EFLAGS: 00000093 [ 860.677710][ C1] RAX: 000000000bc8e000 RBX: 0000000000000000 RCX: 0000000000000000 [ 860.677722][ C1] RDX: ffff888011a6d880 RSI: ffffffff8136e1b4 RDI: 0000000000000007 [ 860.677734][ C1] RBP: ffffffff8bc8e000 R08: 0000000000000007 R09: 000000001fffffff [ 860.677746][ C1] R10: 000000000bc8e000 R11: 0000000000000000 R12: ffff88813fe30000 [ 860.677757][ C1] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 [ 860.677768][ C1] FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 [ 860.677783][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 860.677796][ C1] CR2: 000055d9b57ba600 CR3: 000000000bc8e000 CR4: 00000000003506e0 [ 860.677815][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 860.677825][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 860.677836][ C1] Call Trace: [ 860.677841][ C1] [ 860.677847][ C1] switch_mm_irqs_off+0x562/0xa20 [ 860.677868][ C1] ? kasan_check_range+0x13d/0x180 [ 860.677894][ C1] ? kmem_cache_alloc_lru+0x1b9/0x720 [ 860.677915][ C1] __text_poke+0x3f3/0x8e0 [ 860.677933][ C1] ? cpumask_weight+0x40/0x40 [ 860.677952][ C1] ? optimize_nops+0x2d0/0x2d0 [ 860.677970][ C1] ? text_poke_memset+0x60/0x60 [ 860.677992][ C1] text_poke_bp_batch+0x44a/0x6c0 [ 860.678010][ C1] ? kmem_cache_alloc_lru+0x1b9/0x720 [ 860.678033][ C1] ? do_sync_core+0x20/0x20 [ 860.678055][ C1] ? __jump_label_update+0x296/0x410 [ 860.678080][ C1] text_poke_finish+0x16/0x30 [ 860.678098][ C1] arch_jump_label_transform_apply+0x13/0x20 [ 860.678125][ C1] jump_label_update+0x32f/0x410 [ 860.678149][ C1] static_key_enable_cpuslocked+0x1b1/0x260 [ 860.678173][ C1] static_key_enable+0x16/0x20 [ 860.678195][ C1] toggle_allocation_gate+0x100/0x390 [ 860.678223][ C1] ? lock_release+0x780/0x780 [ 860.678243][ C1] ? wake_up_kfence_timer+0x20/0x20 [ 860.678271][ C1] ? lockdep_hardirqs_on+0x79/0x100 [ 860.678297][ C1] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 860.678323][ C1] process_one_work+0x991/0x1610 [ 860.678353][ C1] ? pwq_dec_nr_in_flight+0x2a0/0x2a0 [ 860.678380][ C1] ? rwlock_bug.part.0+0x90/0x90 [ 860.678401][ C1] ? _raw_spin_lock_irq+0x41/0x50 [ 860.678432][ C1] worker_thread+0x665/0x1080 [ 860.678461][ C1] ? process_one_work+0x1610/0x1610 [ 860.678486][ C1] kthread+0x2e4/0x3a0 [ 860.678506][ C1] ? kthread_complete_and_exit+0x40/0x40 [ 860.678529][ C1] ret_from_fork+0x1f/0x30 [ 860.678560][ C1] [ 860.678643][ T28] Kernel panic - not syncing: hung_task: blocked tasks [ 860.986654][ T28] CPU: 0 PID: 28 Comm: khungtaskd Not tainted 5.19.0-next-20220809-syzkaller #0 [ 860.995692][ T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 861.005745][ T28] Call Trace: [ 861.009031][ T28] [ 861.011966][ T28] dump_stack_lvl+0xcd/0x134 [ 861.016579][ T28] panic+0x2c8/0x627 [ 861.020514][ T28] ? panic_print_sys_info.part.0+0x10b/0x10b [ 861.026513][ T28] ? lapic_can_unplug_cpu+0x80/0x80 [ 861.031718][ T28] ? preempt_schedule_thunk+0x16/0x18 [ 861.037110][ T28] ? watchdog.cold+0x135/0x426 [ 861.041892][ T28] watchdog.cold+0x146/0x426 [ 861.046494][ T28] ? proc_dohung_task_timeout_secs+0x80/0x80 [ 861.052489][ T28] kthread+0x2e4/0x3a0 [ 861.056567][ T28] ? kthread_complete_and_exit+0x40/0x40 [ 861.062222][ T28] ret_from_fork+0x1f/0x30 [ 861.066673][ T28] [ 861.069968][ T28] Kernel Offset: disabled [ 861.074325][ T28] Rebooting in 86400 seconds..