Warning: Permanently added '10.128.0.183' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 609.628344][ T8427] IPVS: ftp: loaded support on port[0] = 21 [ 859.663429][ T1641] INFO: task kworker/1:1:34 blocked for more than 143 seconds. [ 859.671129][ T1641] Not tainted 5.11.0-rc7-syzkaller #0 [ 859.680421][ T1641] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 859.690192][ T1641] task:kworker/1:1 state:D stack:26416 pid: 34 ppid: 2 flags:0x00004000 [ 859.700122][ T1641] Workqueue: ipv6_addrconf addrconf_verify_work [ 859.707343][ T1641] Call Trace: [ 859.710640][ T1641] __schedule+0x999/0xe70 [ 859.716574][ T1641] schedule+0x14b/0x200 [ 859.720745][ T1641] schedule_preempt_disabled+0xf/0x20 [ 859.727299][ T1641] __mutex_lock_common+0x124f/0x2f00 [ 859.732611][ T1641] ? addrconf_verify_work+0xa/0x20 [ 859.738872][ T1641] mutex_lock_nested+0x1a/0x20 [ 859.744376][ T1641] addrconf_verify_work+0xa/0x20 [ 859.749327][ T1641] process_one_work+0x789/0xfc0 [ 859.755430][ T1641] worker_thread+0xac1/0x1300 [ 859.760162][ T1641] ? __kthread_parkme+0x148/0x190 [ 859.766388][ T1641] ? rcu_lock_release+0x20/0x20 [ 859.771251][ T1641] kthread+0x39a/0x3c0 [ 859.777562][ T1641] ? rcu_lock_release+0x20/0x20 [ 859.782420][ T1641] ? kthread_blkcg+0xd0/0xd0 [ 859.788211][ T1641] ret_from_fork+0x1f/0x30 [ 859.792857][ T1641] [ 859.792857][ T1641] Showing all locks held in the system: [ 859.801862][ T1641] 3 locks held by kworker/1:1/34: [ 859.808909][ T1641] #0: ffff888147422938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x6f4/0xfc0 [ 859.820527][ T1641] #1: ffffc90000e2fd78 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x733/0xfc0 [ 859.831527][ T1641] #2: ffffffff8d6eed48 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 [ 859.841707][ T1641] 1 lock held by khungtaskd/1641: [ 859.847459][ T1641] #0: ffffffff8c711680 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 [ 859.857600][ T1641] 1 lock held by in:imklog/8122: [ 859.862539][ T1641] #0: ffff88801269c870 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 [ 859.873020][ T1641] 1 lock held by syz-executor506/8449: [ 859.879190][ T1641] [ 859.881518][ T1641] ============================================= [ 859.881518][ T1641] [ 859.891124][ T1641] NMI backtrace for cpu 0 [ 859.895558][ T1641] CPU: 0 PID: 1641 Comm: khungtaskd Not tainted 5.11.0-rc7-syzkaller #0 [ 859.903964][ T1641] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 859.914009][ T1641] Call Trace: [ 859.917289][ T1641] dump_stack+0x137/0x1be [ 859.921704][ T1641] ? nmi_cpu_backtrace+0x94/0x190 [ 859.926727][ T1641] ? trace_vector_free_moved+0x1a0/0x1a0 [ 859.932384][ T1641] nmi_cpu_backtrace+0x16c/0x190 [ 859.937404][ T1641] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 859.943467][ T1641] nmi_trigger_cpumask_backtrace+0x191/0x2f0 [ 859.949440][ T1641] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 859.955506][ T1641] watchdog+0xce9/0xd30 [ 859.959735][ T1641] ? hungtask_pm_notify+0x50/0x50 [ 859.964756][ T1641] kthread+0x39a/0x3c0 [ 859.968821][ T1641] ? hungtask_pm_notify+0x50/0x50 [ 859.973837][ T1641] ? kthread_blkcg+0xd0/0xd0 [ 859.978424][ T1641] ret_from_fork+0x1f/0x30 [ 859.982998][ T1641] Sending NMI from CPU 0 to CPUs 1: [ 859.988757][ C1] NMI backtrace for cpu 1 [ 859.988763][ C1] CPU: 1 PID: 4878 Comm: systemd-journal Not tainted 5.11.0-rc7-syzkaller #0 [ 859.988768][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 859.988772][ C1] RIP: 0010:quarantine_reduce+0x62/0x1c0 [ 859.988777][ C1] Code: 48 c7 c7 10 db 7d 8c e8 0c 96 8f 07 48 8b 0d 15 4b f8 0b 48 c1 e1 07 48 ba 80 ff ff ff ff ff ff 07 48 21 ca 8b 0d c6 41 f8 0b e1 14 31 f6 48 89 d7 48 29 cf 48 0f 43 f7 48 c1 ea 09 48 81 fa [ 859.988783][ C1] RSP: 0018:ffffc900010dfb48 EFLAGS: 00000006 [ 859.988790][ C1] RAX: 0000000000000282 RBX: ffff8880b9d3a000 RCX: 0000000000000002 [ 859.988794][ C1] RDX: 000000000d14e400 RSI: 0000000000000004 RDI: ffffc900010dfadc [ 859.988798][ C1] RBP: ffffc900010dfdb8 R08: dffffc0000000000 R09: fffff5200021bf5c [ 859.988802][ C1] R10: fffff5200021bf5c R11: 0000000000000000 R12: 0000000000001000 [ 859.988806][ C1] R13: ffff888025f38000 R14: 0000000000000000 R15: ffff8880111be280 [ 859.988810][ C1] FS: 00007ff325df78c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 859.988814][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 859.988817][ C1] CR2: 00007ff3231c5000 CR3: 0000000012a35000 CR4: 00000000001506e0 [ 859.988821][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 859.988825][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 859.988828][ C1] Call Trace: [ 859.988830][ C1] ? getname_flags+0xba/0x640 [ 859.988833][ C1] ____kasan_kmalloc+0x32/0xf0 [ 859.988835][ C1] ? prep_compound_page+0x279/0x3b0 [ 859.988838][ C1] ? get_page_from_freelist+0x9ac/0xc50 [ 859.988841][ C1] ? rcu_read_lock_sched_held+0x41/0xb0 [ 859.988844][ C1] ? trace_mm_page_alloc+0x91/0x1a0 [ 859.988847][ C1] ? allocate_slab+0x366/0x5a0 [ 859.988850][ C1] ? lockdep_hardirqs_off+0x69/0xf0 [ 859.988853][ C1] ? trace_irq_disable_rcuidle+0x11/0x170 [ 859.988856][ C1] ? kmem_cache_alloc+0x253/0x2e0 [ 859.988858][ C1] ? getname_flags+0xba/0x640 [ 859.988861][ C1] kmem_cache_alloc+0x1d7/0x2e0 [ 859.988864][ C1] getname_flags+0xba/0x640 [ 859.988866][ C1] do_sys_openat2+0x5b/0x380 [ 859.988869][ C1] __x64_sys_open+0x1af/0x1e0 [ 859.988871][ C1] do_syscall_64+0x2d/0x70 [ 859.988874][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 859.988877][ C1] RIP: 0033:0x7ff325386840 [ 859.988882][ C1] Code: 73 01 c3 48 8b 0d 68 77 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 bb 20 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 1e f6 ff ff 48 89 04 24 [ 859.988888][ C1] RSP: 002b:00007ffe56fb2a88 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 859.988894][ C1] RAX: ffffffffffffffda RBX: 00007ffe56fb2d90 RCX: 00007ff325386840 [ 859.988898][ C1] RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 000055756cf51440 [ 859.988902][ C1] RBP: 000000000000000d R08: 00000000000001c0 R09: 00000000ffffffff [ 859.988906][ C1] R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff [ 859.988910][ C1] R13: 000055756cf46040 R14: 00007ffe56fb2d50 R15: 000055756cf51490 [ 859.990214][ T1641] Kernel panic - not syncing: hung_task: blocked tasks [ 860.289396][ T1641] CPU: 0 PID: 1641 Comm: khungtaskd Not tainted 5.11.0-rc7-syzkaller #0 [ 860.297717][ T1641] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 860.307763][ T1641] Call Trace: [ 860.311038][ T1641] dump_stack+0x137/0x1be [ 860.315369][ T1641] ? panic+0x1f3/0x800 [ 860.319521][ T1641] panic+0x291/0x800 [ 860.323412][ T1641] ? nmi_trigger_cpumask_backtrace+0x236/0x2f0 [ 860.329562][ T1641] ? nmi_trigger_cpumask_backtrace+0x29b/0x2f0 [ 860.335712][ T1641] ? nmi_trigger_cpumask_backtrace+0x236/0x2f0 [ 860.341858][ T1641] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2f0 [ 860.348004][ T1641] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 860.354076][ T1641] watchdog+0xd29/0xd30 [ 860.358243][ T1641] ? hungtask_pm_notify+0x50/0x50 [ 860.363261][ T1641] kthread+0x39a/0x3c0 [ 860.367326][ T1641] ? hungtask_pm_notify+0x50/0x50 [ 860.372345][ T1641] ? kthread_blkcg+0xd0/0xd0 [ 860.376932][ T1641] ret_from_fork+0x1f/0x30 [ 860.382262][ T1641] Kernel Offset: disabled [ 860.386584][ T1641] Rebooting in 86400 seconds..