Warning: Permanently added '10.128.1.80' (ECDSA) to the list of known hosts. executing program [ 716.210179][ T29] INFO: task kworker/0:1:14 blocked for more than 143 seconds. [ 716.217827][ T29] Not tainted 5.19.0-rc3-syzkaller-00158-g5a478a653b4c #0 [ 716.225707][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 716.234561][ T29] task:kworker/0:1 state:D stack:25320 pid: 14 ppid: 2 flags:0x00004000 [ 716.243922][ T29] Workqueue: ipv6_addrconf addrconf_verify_work [ 716.250316][ T29] Call Trace: [ 716.253640][ T29] [ 716.256598][ T29] __schedule+0xa00/0x4b50 [ 716.261189][ T29] ? find_held_lock+0x2d/0x110 [ 716.266017][ T29] ? wq_worker_sleeping+0x1e5/0x250 [ 716.271321][ T29] ? mark_held_locks+0x9f/0xe0 [ 716.276145][ T29] ? rwlock_bug.part.0+0x90/0x90 [ 716.281190][ T29] ? io_schedule_timeout+0x140/0x140 [ 716.286544][ T29] ? lockdep_hardirqs_on+0x79/0x100 [ 716.291919][ T29] schedule+0xd2/0x1f0 [ 716.296054][ T29] schedule_preempt_disabled+0xf/0x20 [ 716.301547][ T29] __mutex_lock+0xa70/0x1350 [ 716.306219][ T29] ? addrconf_verify_work+0xe/0x20 [ 716.311443][ T29] ? mutex_lock_io_nested+0x1190/0x1190 [ 716.317096][ T29] ? lock_release+0x780/0x780 [ 716.321915][ T29] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 716.327976][ T29] addrconf_verify_work+0xe/0x20 [ 716.333024][ T29] process_one_work+0x996/0x1610 [ 716.338039][ T29] ? pwq_dec_nr_in_flight+0x2a0/0x2a0 [ 716.343544][ T29] ? rwlock_bug.part.0+0x90/0x90 [ 716.348546][ T29] ? _raw_spin_lock_irq+0x41/0x50 [ 716.353765][ T29] worker_thread+0x665/0x1080 [ 716.358546][ T29] ? __kthread_parkme+0x15f/0x220 [ 716.363698][ T29] ? process_one_work+0x1610/0x1610 [ 716.368926][ T29] kthread+0x2e9/0x3a0 [ 716.373086][ T29] ? kthread_complete_and_exit+0x40/0x40 [ 716.378755][ T29] ret_from_fork+0x1f/0x30 [ 716.383349][ T29] [ 716.386496][ T29] [ 716.386496][ T29] Showing all locks held in the system: [ 716.394824][ T29] 3 locks held by kworker/0:1/14: [ 716.399862][ T29] #0: ffff8880266ef138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 [ 716.411001][ T29] #1: ffffc90000137da8 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 [ 716.424195][ T29] #2: ffffffff8d58e828 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xe/0x20 [ 716.433739][ T29] 1 lock held by khungtaskd/29: [ 716.438628][ T29] #0: ffffffff8bd86ba0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 [ 716.448623][ T29] 1 lock held by klogd/2968: [ 716.453308][ T29] #0: ffff8880b9a39ed8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 [ 716.463348][ T29] 2 locks held by getty/3293: [ 716.468025][ T29] #0: ffff88814a53c098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 [ 716.477976][ T29] #1: ffffc90002d162e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xe50/0x13c0 [ 716.488209][ T29] 1 lock held by syz-executor281/3648: [ 716.493776][ T29] [ 716.496131][ T29] ============================================= [ 716.496131][ T29] [ 716.504689][ T29] NMI backtrace for cpu 1 [ 716.509034][ T29] CPU: 1 PID: 29 Comm: khungtaskd Not tainted 5.19.0-rc3-syzkaller-00158-g5a478a653b4c #0 [ 716.518955][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 716.529069][ T29] Call Trace: [ 716.532355][ T29] [ 716.535293][ T29] dump_stack_lvl+0xcd/0x134 [ 716.539945][ T29] nmi_cpu_backtrace.cold+0x47/0x144 [ 716.545249][ T29] ? lapic_can_unplug_cpu+0x80/0x80 [ 716.550462][ T29] nmi_trigger_cpumask_backtrace+0x1e6/0x230 [ 716.556497][ T29] watchdog+0xc22/0xf90 [ 716.560659][ T29] ? proc_dohung_task_timeout_secs+0x80/0x80 [ 716.566658][ T29] kthread+0x2e9/0x3a0 [ 716.570736][ T29] ? kthread_complete_and_exit+0x40/0x40 [ 716.576372][ T29] ret_from_fork+0x1f/0x30 [ 716.580816][ T29] [ 716.583954][ T29] Sending NMI from CPU 1 to CPUs 0: [ 716.589197][ C0] NMI backtrace for cpu 0 skipped: idling at acpi_idle_do_entry+0x1c9/0x240 [ 716.590187][ T29] Kernel panic - not syncing: hung_task: blocked tasks [ 716.590198][ T29] CPU: 1 PID: 29 Comm: khungtaskd Not tainted 5.19.0-rc3-syzkaller-00158-g5a478a653b4c #0 [ 716.590224][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 716.590236][ T29] Call Trace: [ 716.590242][ T29] [ 716.590250][ T29] dump_stack_lvl+0xcd/0x134 [ 716.590280][ T29] panic+0x2d7/0x64a [ 716.590304][ T29] ? panic_print_sys_info.part.0+0x10b/0x10b [ 716.590333][ T29] ? __irq_work_queue_local+0xd8/0x1b0 [ 716.590359][ T29] ? irq_work_queue+0x29/0x80 [ 716.590381][ T29] ? __wake_up_klogd.part.0+0x99/0xf0 [ 716.590411][ T29] ? watchdog.cold+0x5/0x143 [ 716.590446][ T29] watchdog.cold+0x16/0x143 [ 716.590476][ T29] ? proc_dohung_task_timeout_secs+0x80/0x80 [ 716.590507][ T29] kthread+0x2e9/0x3a0 [ 716.590528][ T29] ? kthread_complete_and_exit+0x40/0x40 [ 716.590554][ T29] ret_from_fork+0x1f/0x30 [ 716.590594][ T29] [ 716.694855][ T29] Kernel Offset: disabled [ 716.699186][ T29] Rebooting in 86400 seconds..