Warning: Permanently added '10.128.1.9' (ED25519) to the list of known hosts. executing program [ 716.931257][ T30] INFO: task kworker/u8:12:2485 blocked for more than 143 seconds. [ 716.939413][ T30] Not tainted 6.10.0-rc2-syzkaller-00761-g3ec8d7572a69 #0 [ 716.948818][ T30] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 716.957918][ T30] task:kworker/u8:12 state:D stack:21384 pid:2485 tgid:2485 ppid:2 flags:0x00004000 [ 716.968556][ T30] Workqueue: ipv6_addrconf addrconf_verify_work [ 716.975153][ T30] Call Trace: [ 716.978443][ T30] [ 716.981845][ T30] __schedule+0x17e8/0x4a20 [ 716.986414][ T30] ? __pfx___schedule+0x10/0x10 [ 716.991731][ T30] ? __pfx_lock_release+0x10/0x10 [ 716.996776][ T30] ? __mutex_trylock_common+0x92/0x2e0 [ 717.002719][ T30] ? kthread_data+0x52/0xd0 [ 717.007243][ T30] ? schedule+0x90/0x320 [ 717.011895][ T30] ? wq_worker_sleeping+0x66/0x240 [ 717.017032][ T30] ? schedule+0x90/0x320 [ 717.021638][ T30] schedule+0x14b/0x320 [ 717.025819][ T30] schedule_preempt_disabled+0x13/0x30 [ 717.031731][ T30] __mutex_lock+0x6a4/0xd70 [ 717.036264][ T30] ? __mutex_lock+0x527/0xd70 [ 717.041419][ T30] ? addrconf_verify_work+0x19/0x30 [ 717.046809][ T30] ? __pfx___mutex_lock+0x10/0x10 [ 717.052510][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 717.058513][ T30] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 717.065691][ T30] ? process_scheduled_works+0x945/0x1830 [ 717.071724][ T30] addrconf_verify_work+0x19/0x30 [ 717.076764][ T30] process_scheduled_works+0xa2c/0x1830 [ 717.082792][ T30] ? __pfx_process_scheduled_works+0x10/0x10 [ 717.088800][ T30] ? assign_work+0x364/0x3d0 [ 717.093814][ T30] worker_thread+0x86d/0xd70 [ 717.098432][ T30] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 717.104790][ T30] ? __kthread_parkme+0x169/0x1d0 [ 717.109838][ T30] ? __pfx_worker_thread+0x10/0x10 [ 717.115399][ T30] kthread+0x2f0/0x390 [ 717.119489][ T30] ? __pfx_worker_thread+0x10/0x10 [ 717.125067][ T30] ? __pfx_kthread+0x10/0x10 [ 717.129679][ T30] ret_from_fork+0x4b/0x80 [ 717.134545][ T30] ? __pfx_kthread+0x10/0x10 [ 717.139154][ T30] ret_from_fork_asm+0x1a/0x30 [ 717.144377][ T30] [ 717.147434][ T30] [ 717.147434][ T30] Showing all locks held in the system: [ 717.155711][ T30] 1 lock held by khungtaskd/30: [ 717.160590][ T30] #0: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 717.171107][ T30] 3 locks held by kworker/u8:12/2485: [ 717.176501][ T30] #0: ffff88802a02b948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 [ 717.189220][ T30] #1: ffffc9000996fd00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 [ 717.203383][ T30] #2: ffffffff8f5e7648 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x19/0x30 [ 717.212964][ T30] 2 locks held by getty/4848: [ 717.217641][ T30] #0: ffff88802a7ed0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 717.227970][ T30] #1: ffffc9000312b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 717.238418][ T30] 2 locks held by syz-executor292/5118: [ 717.244284][ T30] [ 717.246616][ T30] ============================================= [ 717.246616][ T30] [ 717.255770][ T30] NMI backtrace for cpu 1 [ 717.260116][ T30] CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc2-syzkaller-00761-g3ec8d7572a69 #0 [ 717.270008][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 717.280064][ T30] Call Trace: [ 717.283348][ T30] [ 717.286289][ T30] dump_stack_lvl+0x241/0x360 [ 717.290981][ T30] ? __pfx_dump_stack_lvl+0x10/0x10 [ 717.296185][ T30] ? __pfx__printk+0x10/0x10 [ 717.300781][ T30] ? vprintk_emit+0x631/0x770 [ 717.305491][ T30] ? __pfx_vprintk_emit+0x10/0x10 [ 717.310723][ T30] nmi_cpu_backtrace+0x49c/0x4d0 [ 717.315675][ T30] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 717.321399][ T30] ? _printk+0xd5/0x120 [ 717.325559][ T30] ? __pfx__printk+0x10/0x10 [ 717.330156][ T30] ? __wake_up_klogd+0xcc/0x110 [ 717.335020][ T30] ? __pfx__printk+0x10/0x10 [ 717.339622][ T30] ? __rcu_read_unlock+0xa1/0x110 [ 717.344661][ T30] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 717.350650][ T30] nmi_trigger_cpumask_backtrace+0x198/0x320 [ 717.356728][ T30] watchdog+0xfde/0x1020 [ 717.360978][ T30] ? watchdog+0x1ea/0x1020 [ 717.365411][ T30] ? __pfx_watchdog+0x10/0x10 [ 717.370096][ T30] kthread+0x2f0/0x390 [ 717.374177][ T30] ? __pfx_watchdog+0x10/0x10 [ 717.378856][ T30] ? __pfx_kthread+0x10/0x10 [ 717.383450][ T30] ret_from_fork+0x4b/0x80 [ 717.387874][ T30] ? __pfx_kthread+0x10/0x10 [ 717.392472][ T30] ret_from_fork_asm+0x1a/0x30 [ 717.397277][ T30] [ 717.400430][ T30] Sending NMI from CPU 1 to CPUs 0: [ 717.405709][ C0] NMI backtrace for cpu 0 [ 717.405721][ C0] CPU: 0 PID: 2475 Comm: kworker/u8:11 Not tainted 6.10.0-rc2-syzkaller-00761-g3ec8d7572a69 #0 [ 717.405738][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 717.405747][ C0] Workqueue: events_unbound toggle_allocation_gate [ 717.405775][ C0] RIP: 0010:lock_release+0x343/0x9f0 [ 717.405796][ C0] Code: 8b 5c 24 18 74 0e 4c 89 ff 49 89 d6 e8 d6 6c 89 00 4c 89 f2 4d 8b 37 48 81 c3 d0 0a 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 <74> 0e 48 89 df 49 89 d7 e8 a0 6d 89 00 4c 89 fa 4c 89 33 3b 54 24 [ 717.405809][ C0] RSP: 0018:ffffc9000990f600 EFLAGS: 00000046 [ 717.405826][ C0] RAX: 1ffff1100538dc9a RBX: ffff888029c6e4d0 RCX: ffffc9000990f603 [ 717.405838][ C0] RDX: 0000000000000005 RSI: ffff888029c6e4d8 RDI: ffff888029c6e5a8 [ 717.405849][ C0] RBP: ffffc9000990f730 R08: ffffffff8fad9aaf R09: 1ffffffff1f5b355 [ 717.405860][ C0] R10: dffffc0000000000 R11: fffffbfff1f5b356 R12: dffffc0000000000 [ 717.405871][ C0] R13: 0000000000020021 R14: 20c1c5e340627009 R15: ffff888029c6e5a8 [ 717.405882][ C0] FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 717.405895][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 717.405906][ C0] CR2: 00007fc563ff0bd0 CR3: 000000000e132000 CR4: 00000000003506f0 [ 717.405919][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 717.405928][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 717.405938][ C0] Call Trace: [ 717.405944][ C0] [ 717.405950][ C0] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 717.405968][ C0] ? __pfx_lock_acquire+0x10/0x10 [ 717.405985][ C0] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 717.406009][ C0] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 717.406025][ C0] ? nmi_handle+0x14f/0x5a0 [ 717.406045][ C0] ? nmi_handle+0x2a/0x5a0 [ 717.406065][ C0] ? lock_release+0x343/0x9f0 [ 717.406080][ C0] ? default_do_nmi+0x63/0x160 [ 717.406098][ C0] ? exc_nmi+0x123/0x1f0 [ 717.406115][ C0] ? end_repeat_nmi+0xf/0x53 [ 717.406136][ C0] ? lock_release+0x343/0x9f0 [ 717.406151][ C0] ? lock_release+0x343/0x9f0 [ 717.406166][ C0] ? lock_release+0x343/0x9f0 [ 717.406181][ C0] [ 717.406186][ C0] [ 717.406193][ C0] ? __text_poke+0xa6b/0xd30 [ 717.406208][ C0] ? __text_poke+0xaec/0xd30 [ 717.406223][ C0] ? __pfx_lock_release+0x10/0x10 [ 717.406237][ C0] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 717.406254][ C0] ? do_raw_spin_unlock+0x13c/0x8b0 [ 717.406276][ C0] ? kmalloc_node_trace_noprof+0x8c/0x300 [ 717.406292][ C0] __text_poke+0xaf8/0xd30 [ 717.406308][ C0] ? kmalloc_node_trace_noprof+0x8c/0x300 [ 717.406323][ C0] ? __pfx_text_poke_memcpy+0x10/0x10 [ 717.406339][ C0] ? __pfx___text_poke+0x10/0x10 [ 717.406353][ C0] ? kmem_cache_alloc_bulk_noprof+0x146/0x770 [ 717.406369][ C0] ? perf_event_text_poke+0x258/0x330 [ 717.406389][ C0] ? __pfx_smp_call_function_many_cond+0x10/0x10 [ 717.406409][ C0] ? __pfx_perf_event_text_poke+0x10/0x10 [ 717.406426][ C0] ? __mutex_trylock_common+0x183/0x2e0 [ 717.406444][ C0] ? __pfx___might_resched+0x10/0x10 [ 717.406467][ C0] text_poke_bp_batch+0x8cd/0xb30 [ 717.406487][ C0] ? kmem_cache_alloc_bulk_noprof+0x147/0x770 [ 717.406503][ C0] ? __pfx_text_poke_bp_batch+0x10/0x10 [ 717.406522][ C0] ? arch_jump_label_transform_queue+0x9b/0x100 [ 717.406543][ C0] text_poke_finish+0x30/0x50 [ 717.406558][ C0] arch_jump_label_transform_apply+0x1c/0x30 [ 717.406576][ C0] static_key_enable_cpuslocked+0x136/0x260 [ 717.406592][ C0] static_key_enable+0x1a/0x20 [ 717.406606][ C0] toggle_allocation_gate+0xb5/0x250 [ 717.406624][ C0] ? __pfx_toggle_allocation_gate+0x10/0x10 [ 717.406643][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 717.406664][ C0] ? process_scheduled_works+0x945/0x1830 [ 717.406678][ C0] process_scheduled_works+0xa2c/0x1830 [ 717.406704][ C0] ? __pfx_process_scheduled_works+0x10/0x10 [ 717.406722][ C0] ? assign_work+0x364/0x3d0 [ 717.406739][ C0] worker_thread+0x86d/0xd70 [ 717.406760][ C0] ? __kthread_parkme+0x169/0x1d0 [ 717.406777][ C0] ? __pfx_worker_thread+0x10/0x10 [ 717.406792][ C0] kthread+0x2f0/0x390 [ 717.406809][ C0] ? __pfx_worker_thread+0x10/0x10 [ 717.406829][ C0] ? __pfx_kthread+0x10/0x10 [ 717.406845][ C0] ret_from_fork+0x4b/0x80 [ 717.406863][ C0] ? __pfx_kthread+0x10/0x10 [ 717.406879][ C0] ret_from_fork_asm+0x1a/0x30 [ 717.406905][ C0] [ 717.406912][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.202 msecs [ 717.407763][ T30] Kernel panic - not syncing: hung_task: blocked tasks [ 717.407775][ T30] CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc2-syzkaller-00761-g3ec8d7572a69 #0 [ 717.407792][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 717.407802][ T30] Call Trace: [ 717.407809][ T30] [ 717.407816][ T30] dump_stack_lvl+0x241/0x360 [ 717.407839][ T30] ? __pfx_dump_stack_lvl+0x10/0x10 [ 717.407856][ T30] ? __pfx__printk+0x10/0x10 [ 717.407876][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 717.407901][ T30] ? vscnprintf+0x5d/0x90 [ 717.407922][ T30] panic+0x349/0x860 [ 717.407945][ T30] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 717.407967][ T30] ? __pfx_panic+0x10/0x10 [ 717.407987][ T30] ? tick_nohz_tick_stopped+0x82/0xb0 [ 717.408011][ T30] ? __irq_work_queue_local+0x137/0x410 [ 717.408030][ T30] ? preempt_schedule_thunk+0x1a/0x30 [ 717.408048][ T30] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 717.408066][ T30] ? nmi_trigger_cpumask_backtrace+0x2d4/0x320 [ 717.408094][ T30] ? nmi_trigger_cpumask_backtrace+0x2d9/0x320 [ 717.408116][ T30] watchdog+0x101d/0x1020 [ 717.408137][ T30] ? watchdog+0x1ea/0x1020 [ 717.408160][ T30] ? __pfx_watchdog+0x10/0x10 [ 717.408178][ T30] kthread+0x2f0/0x390 [ 717.408197][ T30] ? __pfx_watchdog+0x10/0x10 [ 717.408214][ T30] ? __pfx_kthread+0x10/0x10 [ 717.408234][ T30] ret_from_fork+0x4b/0x80 [ 717.408253][ T30] ? __pfx_kthread+0x10/0x10 [ 717.408273][ T30] ret_from_fork_asm+0x1a/0x30 [ 717.408306][ T30] [ 717.411560][ T30] Kernel Offset: disabled [ 717.999776][ T30] Rebooting in 86400 seconds..