Warning: Permanently added '10.128.0.161' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 481.187936][ T8419] IPVS: ftp: loaded support on port[0] = 21 [ 721.520411][ T1648] INFO: task kworker/u4:0:8 blocked for more than 143 seconds. [ 721.528518][ T1648] Not tainted 5.11.0-rc6-syzkaller #0 [ 721.537866][ T1648] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 721.549540][ T1648] task:kworker/u4:0 state:D stack:24248 pid: 8 ppid: 2 flags:0x00004000 [ 721.560431][ T1648] Workqueue: tc_filter_workqueue tcindex_partial_destroy_work [ 721.568078][ T1648] Call Trace: [ 721.573346][ T1648] __schedule+0x999/0xe70 [ 721.577880][ T1648] schedule+0x14b/0x200 [ 721.583992][ T1648] schedule_preempt_disabled+0xf/0x20 [ 721.589406][ T1648] __mutex_lock_common+0x124f/0x2f00 [ 721.596673][ T1648] ? tcindex_partial_destroy_work+0x12/0x50 [ 721.604242][ T1648] mutex_lock_nested+0x1a/0x20 [ 721.609055][ T1648] tcindex_partial_destroy_work+0x12/0x50 [ 721.616868][ T1648] process_one_work+0x789/0xfc0 [ 721.623201][ T1648] worker_thread+0xac1/0x1300 [ 721.628833][ T1648] ? _raw_spin_unlock_irqrestore+0x2e/0x60 [ 721.636622][ T1648] ? rcu_lock_release+0x20/0x20 [ 721.642846][ T1648] kthread+0x39a/0x3c0 [ 721.647033][ T1648] ? rcu_lock_release+0x20/0x20 [ 721.654195][ T1648] ? kthread_blkcg+0xd0/0xd0 [ 721.658878][ T1648] ret_from_fork+0x1f/0x30 [ 721.665391][ T1648] INFO: task kworker/1:2:2990 blocked for more than 143 seconds. [ 721.675681][ T1648] Not tainted 5.11.0-rc6-syzkaller #0 [ 721.683768][ T1648] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 721.694066][ T1648] task:kworker/1:2 state:D stack:27480 pid: 2990 ppid: 2 flags:0x00004000 [ 721.704835][ T1648] Workqueue: ipv6_addrconf addrconf_verify_work [ 721.712566][ T1648] Call Trace: [ 721.716331][ T1648] __schedule+0x999/0xe70 [ 721.722534][ T1648] schedule+0x14b/0x200 [ 721.726997][ T1648] schedule_preempt_disabled+0xf/0x20 [ 721.734390][ T1648] __mutex_lock_common+0x124f/0x2f00 [ 721.739841][ T1648] ? addrconf_verify_work+0xa/0x20 [ 721.746885][ T1648] mutex_lock_nested+0x1a/0x20 [ 721.752991][ T1648] addrconf_verify_work+0xa/0x20 [ 721.758008][ T1648] process_one_work+0x789/0xfc0 [ 721.765568][ T1648] worker_thread+0xac1/0x1300 [ 721.771721][ T1648] ? __kthread_parkme+0x148/0x190 [ 721.776795][ T1648] ? rcu_lock_release+0x20/0x20 [ 721.783473][ T1648] kthread+0x39a/0x3c0 [ 721.787706][ T1648] ? rcu_lock_release+0x20/0x20 [ 721.794722][ T1648] ? kthread_blkcg+0xd0/0xd0 [ 721.799414][ T1648] ret_from_fork+0x1f/0x30 [ 721.807333][ T1648] [ 721.807333][ T1648] Showing all locks held in the system: [ 721.816484][ T1648] 3 locks held by kworker/u4:0/8: [ 721.823020][ T1648] #0: ffff888016117138 ((wq_completion)tc_filter_workqueue){+.+.}-{0:0}, at: process_one_work+0x6f4/0xfc0 [ 721.836109][ T1648] #1: ffffc90000cd7d78 ((work_completion)(&(rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x733/0xfc0 [ 721.848881][ T1648] #2: ffffffff8d6eeb88 (rtnl_mutex){+.+.}-{3:3}, at: tcindex_partial_destroy_work+0x12/0x50 [ 721.860541][ T1648] 1 lock held by khungtaskd/1648: [ 721.865687][ T1648] #0: ffffffff8c711740 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 [ 721.877140][ T1648] 3 locks held by kworker/1:2/2990: [ 721.883690][ T1648] #0: ffff8880226c1538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x6f4/0xfc0 [ 721.896010][ T1648] #1: ffffc90001087d78 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x733/0xfc0 [ 721.907569][ T1648] #2: ffffffff8d6eeb88 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 [ 721.918497][ T1648] 1 lock held by in:imklog/8144: [ 721.924706][ T1648] #0: ffff8880146eb270 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 [ 721.936581][ T1648] 1 lock held by syz-executor422/8440: [ 721.943503][ T1648] [ 721.945882][ T1648] ============================================= [ 721.945882][ T1648] [ 721.956647][ T1648] NMI backtrace for cpu 0 [ 721.961246][ T1648] CPU: 0 PID: 1648 Comm: khungtaskd Not tainted 5.11.0-rc6-syzkaller #0 [ 721.969597][ T1648] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 721.979681][ T1648] Call Trace: [ 721.982991][ T1648] dump_stack+0x137/0x1be [ 721.987490][ T1648] ? nmi_cpu_backtrace+0x94/0x190 [ 721.992541][ T1648] ? asan.module_dtor+0x20/0x20 [ 721.997524][ T1648] nmi_cpu_backtrace+0x16c/0x190 [ 722.002497][ T1648] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 722.008684][ T1648] nmi_trigger_cpumask_backtrace+0x191/0x2f0 [ 722.014697][ T1648] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 722.020798][ T1648] watchdog+0xce9/0xd30 [ 722.025091][ T1648] ? hungtask_pm_notify+0x50/0x50 [ 722.030131][ T1648] kthread+0x39a/0x3c0 [ 722.034220][ T1648] ? hungtask_pm_notify+0x50/0x50 [ 722.039257][ T1648] ? kthread_blkcg+0xd0/0xd0 [ 722.043873][ T1648] ret_from_fork+0x1f/0x30 [ 722.048479][ T1648] Sending NMI from CPU 0 to CPUs 1: [ 722.053991][ C1] NMI backtrace for cpu 1 [ 722.054000][ C1] CPU: 1 PID: 4881 Comm: systemd-journal Not tainted 5.11.0-rc6-syzkaller #0 [ 722.054006][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 722.054012][ C1] RIP: 0010:lockdep_hardirqs_on_prepare+0x1/0x5e0 [ 722.054018][ C1] Code: ff ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 4b ff ff ff e8 61 04 60 00 e9 41 ff ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 55 <41> 57 41 56 41 55 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 [ 722.054027][ C1] RSP: 0018:ffffc90000faff20 EFLAGS: 00000093 [ 722.054036][ C1] RAX: ffffffff817dc7fc RBX: ffffffff89600068 RCX: ffff888013668000 [ 722.054041][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff89600068 [ 722.054046][ C1] RBP: 0000000000000000 R08: ffffffff817dc7f3 R09: fffffbfff1b672e6 [ 722.054051][ C1] R10: fffffbfff1b672e6 R11: 0000000000000000 R12: 0000000000000000 [ 722.054056][ C1] R13: 0000000000000000 R14: ffff888013668000 R15: ffffc90000faff58 [ 722.054061][ C1] FS: 00007f4a3ddbe8c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 722.054066][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 722.054071][ C1] CR2: 00007f4a3b18f000 CR3: 0000000012b27000 CR4: 00000000001506e0 [ 722.054076][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 722.054081][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 722.054085][ C1] Call Trace: [ 722.054089][ C1] syscall_exit_to_user_mode+0x5a/0x180 [ 722.054093][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 722.054096][ C1] RIP: 0033:0x7f4a3d0799c7 [ 722.054102][ C1] Code: 83 c4 08 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d c8 d4 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 15 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a1 d4 2b 00 f7 d8 64 89 01 48 [ 722.054110][ C1] RSP: 002b:00007ffef4e2ad98 EFLAGS: 00000246 ORIG_RAX: 0000000000000015 [ 722.054119][ C1] RAX: 0000000000000000 RBX: 00007ffef4e2ddc0 RCX: 00007f4a3d0799c7 [ 722.054124][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000055dc28e3b9a3 [ 722.054129][ C1] RBP: 00007ffef4e2aee0 R08: 000055dc28e313e5 R09: 0000000000000018 [ 722.054134][ C1] R10: 0000000000000069 R11: 0000000000000246 R12: 0000000000000000 [ 722.054139][ C1] R13: 0000000000000000 R14: 000055dc296b98a0 R15: 00007ffef4e2b3d0 [ 722.055757][ T1648] Kernel panic - not syncing: hung_task: blocked tasks [ 722.283584][ T1648] CPU: 0 PID: 1648 Comm: khungtaskd Not tainted 5.11.0-rc6-syzkaller #0 [ 722.291945][ T1648] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 722.302018][ T1648] Call Trace: [ 722.305325][ T1648] dump_stack+0x137/0x1be [ 722.309676][ T1648] ? panic+0x1f3/0x800 [ 722.313871][ T1648] panic+0x291/0x800 [ 722.317810][ T1648] ? nmi_trigger_cpumask_backtrace+0x236/0x2f0 [ 722.323981][ T1648] ? nmi_trigger_cpumask_backtrace+0x29b/0x2f0 [ 722.330167][ T1648] ? nmi_trigger_cpumask_backtrace+0x236/0x2f0 [ 722.336366][ T1648] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2f0 [ 722.342571][ T1648] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 722.348678][ T1648] watchdog+0xd29/0xd30 [ 722.352879][ T1648] ? hungtask_pm_notify+0x50/0x50 [ 722.357932][ T1648] kthread+0x39a/0x3c0 [ 722.362032][ T1648] ? hungtask_pm_notify+0x50/0x50 [ 722.367179][ T1648] ? kthread_blkcg+0xd0/0xd0 [ 722.371975][ T1648] ret_from_fork+0x1f/0x30 [ 722.377135][ T1648] Kernel Offset: disabled [ 722.381597][ T1648] Rebooting in 86400 seconds..