Warning: Permanently added '10.128.0.246' (ECDSA) to the list of known hosts. executing program executing program [ 587.270721][ T8408] IPVS: ftp: loaded support on port[0] = 21 [ 859.605826][ T1652] INFO: task kworker/1:3:4891 blocked for more than 143 seconds. [ 859.614595][ T1652] Not tainted 5.11.0-syzkaller #0 [ 859.624043][ T1652] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 859.634493][ T1652] task:kworker/1:3 state:D stack:28136 pid: 4891 ppid: 2 flags:0x00004000 [ 859.645372][ T1652] Workqueue: ipv6_addrconf addrconf_verify_work [ 859.653423][ T1652] Call Trace: [ 859.657893][ T1652] __schedule+0x999/0xe70 [ 859.662478][ T1652] schedule+0x14b/0x200 [ 859.669543][ T1652] schedule_preempt_disabled+0xf/0x20 [ 859.675321][ T1652] __mutex_lock_common+0x124f/0x2f00 [ 859.683912][ T1652] ? addrconf_verify_work+0xa/0x20 [ 859.690696][ T1652] mutex_lock_nested+0x1a/0x20 [ 859.697154][ T1652] addrconf_verify_work+0xa/0x20 [ 859.702595][ T1652] process_one_work+0x789/0xfc0 [ 859.709435][ T1652] worker_thread+0xac1/0x1300 [ 859.714253][ T1652] ? __kthread_parkme+0x148/0x190 [ 859.721203][ T1652] ? rcu_lock_release+0x20/0x20 [ 859.727532][ T1652] kthread+0x39a/0x3c0 [ 859.731645][ T1652] ? rcu_lock_release+0x20/0x20 [ 859.738160][ T1652] ? kthread_blkcg+0xd0/0xd0 [ 859.743141][ T1652] ret_from_fork+0x1f/0x30 [ 859.750424][ T1652] [ 859.750424][ T1652] Showing all locks held in the system: [ 859.760176][ T1652] 1 lock held by khungtaskd/1652: [ 859.765539][ T1652] #0: ffffffff8c711680 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 [ 859.778997][ T1652] 3 locks held by kworker/1:3/4891: [ 859.784496][ T1652] #0: ffff88814775a138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x6f4/0xfc0 [ 859.798453][ T1652] #1: ffffc90000e4fd78 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x733/0xfc0 [ 859.810387][ T1652] #2: ffffffff8d6ee888 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 [ 859.821946][ T1652] 1 lock held by in:imklog/8107: [ 859.828207][ T1652] #0: ffff88801d43a0f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 [ 859.839113][ T1652] 1 lock held by syz-executor716/8430: [ 859.844864][ T1652] [ 859.849175][ T1652] ============================================= [ 859.849175][ T1652] [ 859.860326][ T1652] NMI backtrace for cpu 1 [ 859.865022][ T1652] CPU: 1 PID: 1652 Comm: khungtaskd Not tainted 5.11.0-syzkaller #0 [ 859.874091][ T1652] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 859.885771][ T1652] Call Trace: [ 859.889483][ T1652] dump_stack+0x137/0x1be [ 859.894320][ T1652] ? nmi_cpu_backtrace+0x94/0x190 [ 859.899743][ T1652] ? hw_nmi_get_sample_period+0x30/0x60 [ 859.906014][ T1652] nmi_cpu_backtrace+0x16c/0x190 [ 859.911150][ T1652] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 859.917347][ T1652] nmi_trigger_cpumask_backtrace+0x191/0x2f0 [ 859.923718][ T1652] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 859.930497][ T1652] watchdog+0xce9/0xd30 [ 859.935138][ T1652] ? hungtask_pm_notify+0x50/0x50 [ 859.940723][ T1652] kthread+0x39a/0x3c0 [ 859.945166][ T1652] ? hungtask_pm_notify+0x50/0x50 [ 859.950466][ T1652] ? kthread_blkcg+0xd0/0xd0 [ 859.955258][ T1652] ret_from_fork+0x1f/0x30 [ 859.960305][ T1652] Sending NMI from CPU 1 to CPUs 0: [ 859.966378][ C0] NMI backtrace for cpu 0 [ 859.966385][ C0] CPU: 0 PID: 8430 Comm: syz-executor716 Not tainted 5.11.0-syzkaller #0 [ 859.966390][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 859.966394][ C0] RIP: 0010:mark_lock+0xd8/0x2030 [ 859.966400][ C0] Code: 00 00 00 41 89 d4 49 89 fe 83 fa 08 75 28 48 8d 5e 20 48 89 d8 48 c1 e8 03 42 8a 04 28 84 c0 0f 85 66 11 00 00 8a 43 02 24 03 <3c> 01 41 bc 09 00 00 00 41 83 dc 00 41 bf 01 00 00 00 44 89 e1 41 [ 859.966406][ C0] RSP: 0018:ffffc900013eec10 EFLAGS: 00000046 [ 859.966414][ C0] RAX: 1ffff110031b7b00 RBX: ffff888018dbdd10 RCX: ffffffff815c27c9 [ 859.966418][ C0] RDX: 0000000000000008 RSI: ffff888018dbdcf0 RDI: ffff888018dbd340 [ 859.966423][ C0] RBP: ffffc900013eed30 R08: dffffc0000000000 R09: fffffbfff1f216aa [ 859.966427][ C0] R10: fffffbfff1f216aa R11: 0000000000000000 R12: 0000000000000008 [ 859.966431][ C0] R13: dffffc0000000000 R14: ffff888018dbd340 R15: ffff888018dbdd10 [ 859.966435][ C0] FS: 000000000118d300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 859.966439][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 859.966443][ C0] CR2: 00007fff7a08d8d8 CR3: 0000000022fea000 CR4: 00000000001506f0 [ 859.966447][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 859.966451][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 859.966454][ C0] Call Trace: [ 859.966456][ C0] ? mark_lock+0x139/0x2030 [ 859.966459][ C0] __lock_acquire+0xccf/0x5e90 [ 859.966462][ C0] lock_acquire+0x114/0x5e0 [ 859.966464][ C0] ? tcf_idr_check_alloc+0xa4/0x380 [ 859.966467][ C0] __mutex_lock_common+0x173/0x2f00 [ 859.966470][ C0] ? tcf_idr_check_alloc+0xa4/0x380 [ 859.966473][ C0] ? tcf_idr_check_alloc+0x9a/0x380 [ 859.966476][ C0] ? tcf_idr_check_alloc+0xa4/0x380 [ 859.966479][ C0] ? __mutex_unlock_slowpath+0x12d/0x520 [ 859.966482][ C0] mutex_lock_nested+0x1a/0x20 [ 859.966485][ C0] tcf_idr_check_alloc+0xa4/0x380 [ 859.966488][ C0] tcf_police_init+0x1ce/0x1580 [ 859.966491][ C0] ? rcu_read_lock_sched_held+0x41/0xb0 [ 859.966494][ C0] ? tcf_police_search+0x40/0x40 [ 859.966497][ C0] tcf_action_init_1+0x40d/0xa80 [ 859.966500][ C0] ? rcu_read_lock_sched_held+0x41/0xb0 [ 859.966503][ C0] ? trace_percpu_alloc_percpu+0x120/0x270 [ 859.966506][ C0] ? pcpu_alloc+0xf21/0x1470 [ 859.966509][ C0] tcf_exts_validate+0xd6/0x370 [ 859.966511][ C0] basic_change+0x556/0x12d0 [ 859.966514][ C0] tc_new_tfilter+0x13ea/0x2d60 [ 859.966517][ C0] ? basic_get+0x150/0x150 [ 859.966519][ C0] ? tcf_gate_entry_destructor+0x20/0x20 [ 859.966522][ C0] rtnetlink_rcv_msg+0x8f9/0xd60 [ 859.966524][ C0] ? rcu_read_lock_sched_held+0x41/0xb0 [ 859.966527][ C0] netlink_rcv_skb+0x190/0x3a0 [ 859.966529][ C0] ? rtnetlink_bind+0x80/0x80 [ 859.966531][ C0] netlink_unicast+0x786/0x940 [ 859.966534][ C0] netlink_sendmsg+0x9ae/0xd50 [ 859.966536][ C0] ? netlink_getsockopt+0xa50/0xa50 [ 859.966539][ C0] ____sys_sendmsg+0x519/0x800 [ 859.966541][ C0] ? import_iovec+0xe6/0x120 [ 859.966543][ C0] __sys_sendmmsg+0x453/0x680 [ 859.966545][ C0] ? __sys_sendmsg+0xe2/0x370 [ 859.966548][ C0] ? __might_fault+0xb8/0x110 [ 859.966550][ C0] ? _copy_to_user+0xef/0x130 [ 859.966552][ C0] ? move_addr_to_user+0x174/0x1e0 [ 859.966555][ C0] ? syscall_enter_from_user_mode+0x24/0x190 [ 859.966558][ C0] __x64_sys_sendmmsg+0x9c/0xb0 [ 859.966560][ C0] do_syscall_64+0x2d/0x70 [ 859.966562][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 859.966565][ C0] RIP: 0033:0x440229 [ 859.966569][ C0] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 859.966574][ C0] RSP: 002b:00007fff7a08d8f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 859.966580][ C0] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000440229 [ 859.966584][ C0] RDX: 010efe10675dec16 RSI: 0000000020000200 RDI: 0000000000000003 [ 859.966587][ C0] RBP: 0000000000000000 R08: 00000000004ab000 R09: 00000000004ab000 [ 859.966591][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000008f669 [ 859.966594][ C0] R13: 00007fff7a08d920 R14: 00007fff7a08d910 R15: 00007fff7a08d904 [ 859.985648][ T1652] Kernel panic - not syncing: hung_task: blocked tasks [ 860.423368][ T1652] CPU: 1 PID: 1652 Comm: khungtaskd Not tainted 5.11.0-syzkaller #0 [ 860.432599][ T1652] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 860.443379][ T1652] Call Trace: [ 860.446862][ T1652] dump_stack+0x137/0x1be [ 860.451585][ T1652] ? panic+0x1f3/0x800 [ 860.456126][ T1652] panic+0x291/0x800 [ 860.462834][ T1652] ? nmi_trigger_cpumask_backtrace+0x236/0x2f0 [ 860.469351][ T1652] ? nmi_trigger_cpumask_backtrace+0x29b/0x2f0 [ 860.476733][ T1652] ? nmi_trigger_cpumask_backtrace+0x236/0x2f0 [ 860.483163][ T1652] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2f0 [ 860.489881][ T1652] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 860.496146][ T1652] watchdog+0xd29/0xd30 [ 860.500581][ T1652] ? hungtask_pm_notify+0x50/0x50 [ 860.505881][ T1652] kthread+0x39a/0x3c0 [ 860.510068][ T1652] ? hungtask_pm_notify+0x50/0x50 [ 860.515206][ T1652] ? kthread_blkcg+0xd0/0xd0 [ 860.520424][ T1652] ret_from_fork+0x1f/0x30 [ 860.527777][ T1652] Kernel Offset: disabled [ 860.532895][ T1652] Rebooting in 86400 seconds..