DUID 00:04:87:04:3c:41:30:05:a7:f7:d5:81:12:9d:2d:df:74:1f
forked to background, child pid 3191
[   25.916736][ T3192] 8021q: adding VLAN 0 to HW filter on device bond0
[   25.919477][ T3192] eql: remember to turn off Van-Jacobson compression on your slave devices
Starting sshd: OK

syzkaller
syzkaller login: [   76.187684][   T23] cfg80211: failed to load regulatory.db
Warning: Permanently added '10.128.0.96' (ECDSA) to the list of known hosts.
executing program
[  716.184920][   T29] INFO: task kworker/1:4:2943 blocked for more than 143 seconds.
[  716.192714][   T29]       Not tainted 5.19.0-rc3-syzkaller-00158-g5a478a653b4c #0
[  716.200436][   T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  716.209218][   T29] task:kworker/1:4     state:D stack:27784 pid: 2943 ppid:     2 flags:0x00004000
[  716.218546][   T29] Workqueue: ipv6_addrconf addrconf_verify_work
[  716.224948][   T29] Call Trace:
[  716.228249][   T29]  <TASK>
[  716.231193][   T29]  __schedule+0xa00/0x4b50
[  716.235805][   T29]  ? find_held_lock+0x2d/0x110
[  716.240605][   T29]  ? wq_worker_sleeping+0x1e5/0x250
[  716.245912][   T29]  ? mark_held_locks+0x9f/0xe0
[  716.250752][   T29]  ? rwlock_bug.part.0+0x90/0x90
[  716.255837][   T29]  ? io_schedule_timeout+0x140/0x140
[  716.261188][   T29]  ? lockdep_hardirqs_on+0x79/0x100
[  716.266488][   T29]  schedule+0xd2/0x1f0
[  716.270621][   T29]  schedule_preempt_disabled+0xf/0x20
[  716.276132][   T29]  __mutex_lock+0xa70/0x1350
[  716.280780][   T29]  ? addrconf_verify_work+0xe/0x20
[  716.285987][   T29]  ? mutex_lock_io_nested+0x1190/0x1190
[  716.291611][   T29]  ? lock_release+0x780/0x780
[  716.296473][   T29]  addrconf_verify_work+0xe/0x20
[  716.301481][   T29]  process_one_work+0x996/0x1610
[  716.306550][   T29]  ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[  716.311982][   T29]  ? rwlock_bug.part.0+0x90/0x90
[  716.317066][   T29]  ? _raw_spin_lock_irq+0x41/0x50
[  716.322221][   T29]  worker_thread+0x665/0x1080
[  716.327284][   T29]  ? __kthread_parkme+0x15f/0x220
[  716.332334][   T29]  ? process_one_work+0x1610/0x1610
[  716.337715][   T29]  kthread+0x2e9/0x3a0
[  716.341856][   T29]  ? kthread_complete_and_exit+0x40/0x40
[  716.347641][   T29]  ret_from_fork+0x1f/0x30
[  716.352137][   T29]  </TASK>
[  716.355298][   T29] 
[  716.355298][   T29] Showing all locks held in the system:
[  716.363075][   T29] 1 lock held by khungtaskd/29:
[  716.368017][   T29]  #0: ffffffff8bd86ba0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260
[  716.378059][   T29] 3 locks held by kworker/1:4/2943:
[  716.383300][   T29]  #0: ffff88814a440138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610
[  716.394407][   T29]  #1: ffffc9000e1b7da8 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610
[  716.407592][   T29]  #2: ffffffff8d58e828 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xe/0x20
[  716.417128][   T29] 2 locks held by getty/3295:
[  716.421847][   T29]  #0: ffff88814983d098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80
[  716.431803][   T29]  #1: ffffc90002d162e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xe50/0x13c0
[  716.442030][   T29] 1 lock held by syz-executor289/3643:
[  716.447600][   T29]  #0: ffffffff8d58e828 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3a/0x180
[  716.456740][   T29] 
[  716.459137][   T29] =============================================
[  716.459137][   T29] 
[  716.467688][   T29] NMI backtrace for cpu 1
[  716.472014][   T29] CPU: 1 PID: 29 Comm: khungtaskd Not tainted 5.19.0-rc3-syzkaller-00158-g5a478a653b4c #0
[  716.481898][   T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  716.491950][   T29] Call Trace:
[  716.495217][   T29]  <TASK>
[  716.498136][   T29]  dump_stack_lvl+0xcd/0x134
[  716.502772][   T29]  nmi_cpu_backtrace.cold+0x47/0x144
[  716.508049][   T29]  ? lapic_can_unplug_cpu+0x80/0x80
[  716.513240][   T29]  nmi_trigger_cpumask_backtrace+0x1e6/0x230
[  716.519252][   T29]  watchdog+0xc22/0xf90
[  716.523401][   T29]  ? proc_dohung_task_timeout_secs+0x80/0x80
[  716.529374][   T29]  kthread+0x2e9/0x3a0
[  716.533431][   T29]  ? kthread_complete_and_exit+0x40/0x40
[  716.539067][   T29]  ret_from_fork+0x1f/0x30
[  716.543484][   T29]  </TASK>
[  716.546590][   T29] Sending NMI from CPU 1 to CPUs 0:
[  716.551816][    C0] NMI backtrace for cpu 0 skipped: idling at acpi_idle_do_entry+0x1c9/0x240
[  716.552807][   T29] Kernel panic - not syncing: hung_task: blocked tasks
[  716.568300][   T29] CPU: 1 PID: 29 Comm: khungtaskd Not tainted 5.19.0-rc3-syzkaller-00158-g5a478a653b4c #0
[  716.578184][   T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  716.588254][   T29] Call Trace:
[  716.591539][   T29]  <TASK>
[  716.594466][   T29]  dump_stack_lvl+0xcd/0x134
[  716.599051][   T29]  panic+0x2d7/0x64a
[  716.602954][   T29]  ? panic_print_sys_info.part.0+0x10b/0x10b
[  716.608948][   T29]  ? lapic_can_unplug_cpu+0x80/0x80
[  716.614160][   T29]  ? preempt_schedule_thunk+0x16/0x18
[  716.619546][   T29]  ? watchdog.cold+0x5/0x143
[  716.624162][   T29]  watchdog.cold+0x16/0x143
[  716.628682][   T29]  ? proc_dohung_task_timeout_secs+0x80/0x80
[  716.634678][   T29]  kthread+0x2e9/0x3a0
[  716.638756][   T29]  ? kthread_complete_and_exit+0x40/0x40
[  716.644400][   T29]  ret_from_fork+0x1f/0x30
[  716.648842][   T29]  </TASK>
[  716.652046][   T29] Kernel Offset: disabled
[  716.656378][   T29] Rebooting in 86400 seconds..