Warning: Permanently added '10.128.0.186' (ECDSA) to the list of known hosts. executing program [ 716.477487][ T29] INFO: task kworker/1:2:1480 blocked for more than 143 seconds. [ 716.485275][ T29] Not tainted 5.19.0-rc3-syzkaller-00145-gab84db251c04 #0 [ 716.493114][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 716.502000][ T29] task:kworker/1:2 state:D stack:26024 pid: 1480 ppid: 2 flags:0x00004000 [ 716.511333][ T29] Workqueue: ipv6_addrconf addrconf_verify_work [ 716.517704][ T29] Call Trace: [ 716.520998][ T29] [ 716.523942][ T29] __schedule+0xa00/0x4b50 [ 716.528478][ T29] ? find_held_lock+0x2d/0x110 [ 716.533278][ T29] ? wq_worker_sleeping+0x1e5/0x250 [ 716.538557][ T29] ? mark_held_locks+0x9f/0xe0 [ 716.543354][ T29] ? rwlock_bug.part.0+0x90/0x90 [ 716.548363][ T29] ? io_schedule_timeout+0x140/0x140 [ 716.553691][ T29] ? lockdep_hardirqs_on+0x79/0x100 [ 716.559028][ T29] schedule+0xd2/0x1f0 [ 716.559077][ T29] schedule_preempt_disabled+0xf/0x20 [ 716.568581][ T29] __mutex_lock+0xa70/0x1350 [ 716.573190][ T29] ? addrconf_verify_work+0xe/0x20 [ 716.578369][ T29] ? mutex_lock_io_nested+0x1190/0x1190 [ 716.583933][ T29] ? lock_release+0x780/0x780 [ 716.588709][ T29] addrconf_verify_work+0xe/0x20 [ 716.593661][ T29] process_one_work+0x996/0x1610 [ 716.598681][ T29] ? pwq_dec_nr_in_flight+0x2a0/0x2a0 [ 716.604090][ T29] ? rwlock_bug.part.0+0x90/0x90 [ 716.609333][ T29] ? _raw_spin_lock_irq+0x41/0x50 [ 716.614517][ T29] worker_thread+0x665/0x1080 [ 716.619264][ T29] ? __kthread_parkme+0x15f/0x220 [ 716.624322][ T29] ? process_one_work+0x1610/0x1610 [ 716.629616][ T29] kthread+0x2e9/0x3a0 [ 716.633698][ T29] ? kthread_complete_and_exit+0x40/0x40 [ 716.639477][ T29] ret_from_fork+0x1f/0x30 [ 716.643938][ T29] [ 716.647031][ T29] [ 716.647031][ T29] Showing all locks held in the system: [ 716.654822][ T29] 1 lock held by khungtaskd/29: [ 716.659742][ T29] #0: ffffffff8bd86ba0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 [ 716.669724][ T29] 3 locks held by kworker/1:2/1480: [ 716.674934][ T29] #0: ffff88814a8c9138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 [ 716.685982][ T29] #1: ffffc90006497da8 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 [ 716.699149][ T29] #2: ffffffff8d58e828 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xe/0x20 [ 716.708688][ T29] 2 locks held by getty/3294: [ 716.713374][ T29] #0: ffff88814abf3098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 [ 716.723379][ T29] #1: ffffc90002d162e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xe50/0x13c0 [ 716.733589][ T29] 1 lock held by syz-executor285/3639: [ 716.739136][ T29] [ 716.741471][ T29] ============================================= [ 716.741471][ T29] [ 716.750006][ T29] NMI backtrace for cpu 0 [ 716.754346][ T29] CPU: 0 PID: 29 Comm: khungtaskd Not tainted 5.19.0-rc3-syzkaller-00145-gab84db251c04 #0 [ 716.764244][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 716.774297][ T29] Call Trace: [ 716.777576][ T29] [ 716.780510][ T29] dump_stack_lvl+0xcd/0x134 [ 716.785172][ T29] nmi_cpu_backtrace.cold+0x47/0x144 [ 716.790472][ T29] ? lapic_can_unplug_cpu+0x80/0x80 [ 716.795690][ T29] nmi_trigger_cpumask_backtrace+0x1e6/0x230 [ 716.801814][ T29] watchdog+0xc22/0xf90 [ 716.805989][ T29] ? proc_dohung_task_timeout_secs+0x80/0x80 [ 716.811980][ T29] kthread+0x2e9/0x3a0 [ 716.816059][ T29] ? kthread_complete_and_exit+0x40/0x40 [ 716.821702][ T29] ret_from_fork+0x1f/0x30 [ 716.826144][ T29] [ 716.829286][ T29] Sending NMI from CPU 0 to CPUs 1: [ 716.834511][ C1] NMI backtrace for cpu 1 [ 716.834520][ C1] CPU: 1 PID: 3639 Comm: syz-executor285 Not tainted 5.19.0-rc3-syzkaller-00145-gab84db251c04 #0 [ 716.834540][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 716.834550][ C1] RIP: 0010:native_apic_mem_write+0x8/0x10 [ 716.834576][ C1] Code: 00 00 be 01 00 00 00 e9 86 79 2e 00 66 0f 1f 44 00 00 b8 01 00 00 00 c3 cc cc cc cc cc cc cc cc cc cc 89 ff 89 b7 00 c0 5f ff 0f 1f 80 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 53 89 fb 48 [ 716.834594][ C1] RSP: 0018:ffffc9000315fa78 EFLAGS: 00000046 [ 716.834609][ C1] RAX: dffffc0000000000 RBX: ffffffff8b7fbae0 RCX: 0000000000000020 [ 716.834622][ C1] RDX: 1ffffffff16ff75e RSI: 0000000000002f4e RDI: 0000000000000380 [ 716.834634][ C1] RBP: ffff8880b9b27200 R08: 0000000000000005 R09: 000000000000003f [ 716.834646][ C1] R10: 0000000000000020 R11: 0000000000000001 R12: 0000000000002f4e [ 716.834657][ C1] R13: 0000000000000020 R14: ffff8880b9b2a500 R15: 0000000000000000 [ 716.834669][ C1] FS: 0000555556b5f300(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 [ 716.834686][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 716.834704][ C1] CR2: 00007ffd76746278 CR3: 0000000072444000 CR4: 00000000003506e0 [ 716.834716][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 716.834727][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 716.834739][ C1] Call Trace: [ 716.834744][ C1] [ 716.834749][ C1] lapic_next_event+0x4d/0x80 [ 716.834774][ C1] clockevents_program_event+0x254/0x370 [ 716.834799][ C1] tick_program_event+0xac/0x140 [ 716.834823][ C1] hrtimer_reprogram+0x38c/0x440 [ 716.834845][ C1] hrtimer_start_range_ns+0x7af/0xa80 [ 716.834871][ C1] schedule_hrtimeout_range_clock+0x183/0x390 [ 716.834894][ C1] ? hrtimer_nanosleep_restart+0x170/0x170 [ 716.834914][ C1] ? mark_held_locks+0x9f/0xe0 [ 716.834939][ C1] ? hrtimer_init_sleeper_on_stack+0x90/0x90 [ 716.834961][ C1] ? lockdep_hardirqs_on+0x79/0x100 [ 716.834980][ C1] ? ktime_get+0x38a/0x470 [ 716.834999][ C1] ? ktime_get+0x30b/0x470 [ 716.835020][ C1] usleep_range_state+0x129/0x1b0 [ 716.835041][ C1] ? console_conditional_schedule+0x50/0x50 [ 716.835062][ C1] ? usleep_range_state+0x143/0x1b0 [ 716.835083][ C1] napi_disable+0xff/0x120 [ 716.835133][ C1] __tun_detach+0x165/0x1440 [ 716.835193][ C1] tun_chr_close+0xc4/0x180 [ 716.835211][ C1] __fput+0x277/0x9d0 [ 716.835228][ C1] ? __tun_detach+0x1440/0x1440 [ 716.835248][ C1] task_work_run+0xdd/0x1a0 [ 716.835271][ C1] exit_to_user_mode_prepare+0x23c/0x250 [ 716.835290][ C1] syscall_exit_to_user_mode+0x19/0x50 [ 716.835311][ C1] do_syscall_64+0x42/0xb0 [ 716.835339][ C1] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 716.835361][ C1] RIP: 0033:0x7f9eab59ccb3 [ 716.835377][ C1] Code: c7 c2 c0 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 [ 716.835395][ C1] RSP: 002b:00007ffca2c19828 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ 716.835412][ C1] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f9eab59ccb3 [ 716.835428][ C1] RDX: 0000000020000500 RSI: 00000000400454d9 RDI: 0000000000000003 [ 716.835440][ C1] RBP: 0000000000000000 R08: 0000000000f0b5ff R09: 0000000000f0b5ff [ 716.835451][ C1] R10: 0000000000f0b5ff R11: 0000000000000246 R12: 0000000000000000 [ 716.835462][ C1] R13: 00007ffca2c19850 R14: 00007ffca2c19840 R15: 0000000000000003 [ 716.835481][ C1] [ 716.835572][ T29] Kernel panic - not syncing: hung_task: blocked tasks [ 717.184737][ T29] CPU: 1 PID: 29 Comm: khungtaskd Not tainted 5.19.0-rc3-syzkaller-00145-gab84db251c04 #0 [ 717.194611][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 717.204651][ T29] Call Trace: [ 717.207917][ T29] [ 717.210837][ T29] dump_stack_lvl+0xcd/0x134 [ 717.215421][ T29] panic+0x2d7/0x64a [ 717.219306][ T29] ? panic_print_sys_info.part.0+0x10b/0x10b [ 717.225281][ T29] ? lapic_can_unplug_cpu+0x80/0x80 [ 717.230469][ T29] ? preempt_schedule_thunk+0x16/0x18 [ 717.235835][ T29] ? watchdog.cold+0x5/0x143 [ 717.240449][ T29] watchdog.cold+0x16/0x143 [ 717.244947][ T29] ? proc_dohung_task_timeout_secs+0x80/0x80 [ 717.250920][ T29] kthread+0x2e9/0x3a0 [ 717.254974][ T29] ? kthread_complete_and_exit+0x40/0x40 [ 717.260595][ T29] ret_from_fork+0x1f/0x30 [ 717.265009][ T29] [ 717.268281][ T29] Kernel Offset: disabled [ 717.272604][ T29] Rebooting in 86400 seconds..