Warning: Permanently added '10.128.0.80' (ECDSA) to the list of known hosts. [ 482.671640][ T6890] IPVS: ftp: loaded support on port[0] = 21 [ 482.766763][ T6899] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 482.779290][ T6899] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 482.811043][ T6882] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready executing program [ 482.851500][ T6899] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 482.860039][ T6899] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 482.869415][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 636.789805][ T1165] INFO: task kworker/0:1:12 blocked for more than 143 seconds. [ 636.797879][ T1165] Not tainted 5.9.0-rc8-syzkaller #0 [ 636.808875][ T1165] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 636.819021][ T1165] task:kworker/0:1 state:D stack:27272 pid: 12 ppid: 2 flags:0x00004000 [ 636.829971][ T1165] Workqueue: ipv6_addrconf addrconf_dad_work [ 636.836403][ T1165] Call Trace: [ 636.841250][ T1165] __schedule+0xec9/0x2280 [ 636.846378][ T1165] ? io_schedule_timeout+0x140/0x140 [ 636.853410][ T1165] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 636.859610][ T1165] ? _raw_spin_unlock_irq+0x1f/0x80 [ 636.867717][ T1165] ? lockdep_hardirqs_on+0x53/0x100 [ 636.874001][ T1165] schedule+0xd0/0x2a0 [ 636.878266][ T1165] schedule_preempt_disabled+0xf/0x20 [ 636.885258][ T1165] __mutex_lock+0x3e2/0x10e0 [ 636.892531][ T1165] ? addrconf_dad_work+0xa3/0x1280 [ 636.897866][ T1165] ? mutex_lock_io_nested+0xf60/0xf60 [ 636.905024][ T1165] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 636.913703][ T1165] ? lock_acquire+0x1f3/0xaf0 [ 636.918607][ T1165] ? process_one_work+0x85f/0x1670 [ 636.925460][ T1165] addrconf_dad_work+0xa3/0x1280 [ 636.931919][ T1165] ? addrconf_dad_completed+0xcd0/0xcd0 [ 636.938810][ T1165] ? _raw_spin_unlock_irq+0x1f/0x80 [ 636.945728][ T1165] ? lock_is_held_type+0xbb/0xf0 [ 636.953271][ T1165] process_one_work+0x94c/0x1670 [ 636.958596][ T1165] ? lock_release+0x8f0/0x8f0 [ 636.964829][ T1165] ? pwq_dec_nr_in_flight+0x320/0x320 [ 636.971788][ T1165] ? rwlock_bug.part.0+0x90/0x90 [ 636.976903][ T1165] ? lockdep_hardirqs_off+0x96/0xd0 [ 636.983706][ T1165] worker_thread+0x64c/0x1120 [ 636.988537][ T1165] ? process_one_work+0x1670/0x1670 [ 636.995345][ T1165] kthread+0x3b5/0x4a0 [ 636.999559][ T1165] ? __kthread_bind_mask+0xc0/0xc0 [ 637.006389][ T1165] ret_from_fork+0x1f/0x30 [ 637.012184][ T1165] INFO: task kworker/1:1:6882 blocked for more than 143 seconds. [ 637.022183][ T1165] Not tainted 5.9.0-rc8-syzkaller #0 [ 637.028472][ T1165] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 637.039662][ T1165] task:kworker/1:1 state:D stack:27920 pid: 6882 ppid: 2 flags:0x00004000 [ 637.051447][ T1165] Workqueue: ipv6_addrconf addrconf_dad_work [ 637.057624][ T1165] Call Trace: [ 637.062883][ T1165] __schedule+0xec9/0x2280 [ 637.067908][ T1165] ? io_schedule_timeout+0x140/0x140 [ 637.074864][ T1165] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 637.082706][ T1165] ? _raw_spin_unlock_irq+0x1f/0x80 [ 637.088160][ T1165] ? lockdep_hardirqs_on+0x53/0x100 [ 637.095286][ T1165] schedule+0xd0/0x2a0 [ 637.100545][ T1165] schedule_preempt_disabled+0xf/0x20 [ 637.106217][ T1165] __mutex_lock+0x3e2/0x10e0 [ 637.113228][ T1165] ? addrconf_dad_work+0xa3/0x1280 [ 637.118564][ T1165] ? mutex_lock_io_nested+0xf60/0xf60 [ 637.125456][ T1165] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 637.133584][ T1165] ? lock_acquire+0x1f3/0xaf0 [ 637.138411][ T1165] ? process_one_work+0x85f/0x1670 [ 637.144990][ T1165] addrconf_dad_work+0xa3/0x1280 [ 637.152402][ T1165] ? addrconf_dad_completed+0xcd0/0xcd0 [ 637.158254][ T1165] ? _raw_spin_unlock_irq+0x1f/0x80 [ 637.165309][ T1165] ? lock_is_held_type+0xbb/0xf0 [ 637.172117][ T1165] process_one_work+0x94c/0x1670 [ 637.177248][ T1165] ? lock_release+0x8f0/0x8f0 [ 637.183853][ T1165] ? pwq_dec_nr_in_flight+0x320/0x320 [ 637.190647][ T1165] ? rwlock_bug.part.0+0x90/0x90 [ 637.196483][ T1165] ? lockdep_hardirqs_off+0x96/0xd0 [ 637.203320][ T1165] worker_thread+0x64c/0x1120 [ 637.208175][ T1165] ? __kthread_parkme+0x13f/0x1e0 [ 637.215150][ T1165] ? process_one_work+0x1670/0x1670 [ 637.221767][ T1165] kthread+0x3b5/0x4a0 [ 637.226111][ T1165] ? __kthread_bind_mask+0xc0/0xc0 [ 637.233344][ T1165] ret_from_fork+0x1f/0x30 [ 637.238380][ T1165] [ 637.238380][ T1165] Showing all locks held in the system: [ 637.248060][ T1165] 3 locks held by kworker/0:1/12: [ 637.254705][ T1165] #0: ffff888214eff138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x82b/0x1670 [ 637.267574][ T1165] #1: ffffc90000d2fda8 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x85f/0x1670 [ 637.283351][ T1165] #2: ffffffff8b17a308 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xa3/0x1280 [ 637.293937][ T1165] 1 lock held by khungtaskd/1165: [ 637.303222][ T1165] #0: ffffffff8a068480 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 [ 637.315732][ T1165] 1 lock held by in:imklog/6774: [ 637.321820][ T1165] #0: ffff8880a11ff3f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 [ 637.332363][ T1165] 3 locks held by kworker/1:1/6882: [ 637.337750][ T1165] #0: ffff888214eff138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x82b/0x1670 [ 637.350591][ T1165] #1: ffffc900056f7da8 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x85f/0x1670 [ 637.363964][ T1165] #2: ffffffff8b17a308 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xa3/0x1280 [ 637.375126][ T1165] 1 lock held by syz-executor239/6931: [ 637.381589][ T1165] [ 637.385696][ T1165] ============================================= [ 637.385696][ T1165] [ 637.397736][ T1165] NMI backtrace for cpu 0 [ 637.402782][ T1165] CPU: 0 PID: 1165 Comm: khungtaskd Not tainted 5.9.0-rc8-syzkaller #0 [ 637.411129][ T1165] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 637.421500][ T1165] Call Trace: [ 637.425084][ T1165] dump_stack+0x198/0x1fd [ 637.429779][ T1165] nmi_cpu_backtrace.cold+0x70/0xb1 [ 637.435163][ T1165] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 637.441220][ T1165] nmi_trigger_cpumask_backtrace+0x1b3/0x223 [ 637.447580][ T1165] watchdog+0xd7d/0x1000 [ 637.451999][ T1165] ? reset_hung_task_detector+0x30/0x30 [ 637.457635][ T1165] kthread+0x3b5/0x4a0 [ 637.461731][ T1165] ? __kthread_bind_mask+0xc0/0xc0 [ 637.467144][ T1165] ret_from_fork+0x1f/0x30 [ 637.472319][ T1165] Sending NMI from CPU 0 to CPUs 1: [ 637.479612][ C1] NMI backtrace for cpu 1 [ 637.479619][ C1] CPU: 1 PID: 6931 Comm: syz-executor239 Not tainted 5.9.0-rc8-syzkaller #0 [ 637.479625][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 637.479629][ C1] RIP: 0010:lock_release+0x1a/0x8f0 [ 637.479640][ C1] Code: 00 e9 66 fd ff ff 66 2e 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 41 57 41 56 49 89 f6 41 55 49 89 fd 41 54 55 53 <48> 81 ec 90 00 00 00 48 c7 44 24 10 b3 8a b5 41 48 8d 6c 24 10 48 [ 637.479644][ C1] RSP: 0018:ffffc900031e6c60 EFLAGS: 00000246 [ 637.479653][ C1] RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: ffffffff86981612 [ 637.479658][ C1] RDX: ffff8880a83001c0 RSI: ffffffff869817ee RDI: ffff8880a21c5868 [ 637.479664][ C1] RBP: ffffc900031e6e00 R08: 0000000000000000 R09: ffff8880a21c5807 [ 637.479669][ C1] R10: fffffffffffff000 R11: 0000000000000000 R12: ffffc900031e6f88 [ 637.479675][ C1] R13: ffff8880a21c5868 R14: ffffffff869817ee R15: ffff8880a21c5800 [ 637.479681][ C1] FS: 000000000076b880(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000 [ 637.479686][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 637.479692][ C1] CR2: 00007f05c34ea008 CR3: 000000009d8bb000 CR4: 00000000001506e0 [ 637.479697][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 637.479703][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 637.479706][ C1] Call Trace: [ 637.479710][ C1] __mutex_unlock_slowpath+0x81/0x610 [ 637.479715][ C1] ? wait_for_completion+0x260/0x260 [ 637.479719][ C1] tcf_idr_check_alloc+0x29e/0x3b0 [ 637.479723][ C1] tcf_police_init+0x347/0x13a0 [ 637.479727][ C1] ? tcf_police_cleanup+0x60/0x60 [ 637.479731][ C1] ? find_held_lock+0x2d/0x110 [ 637.479735][ C1] ? tc_lookup_action_n+0xcd/0xf0 [ 637.479739][ C1] tcf_action_init_1+0x1a3/0x990 [ 637.479743][ C1] ? tcf_action_dump_old+0x80/0x80 [ 637.479747][ C1] ? lock_acquire+0x1f3/0xaf0 [ 637.479751][ C1] ? lock_is_held_type+0xbb/0xf0 [ 637.479755][ C1] ? find_held_lock+0x2d/0x110 [ 637.479760][ C1] ? fs_reclaim_release+0x90/0xd0 [ 637.479763][ C1] ? mark_lock+0x82/0x1660 [ 637.479768][ C1] tcf_exts_validate+0x138/0x420 [ 637.479772][ C1] ? tcf_exts_destroy+0xc0/0xc0 [ 637.479776][ C1] ? kmem_cache_alloc_trace+0x18e/0x300 [ 637.479780][ C1] ? __nla_parse+0x3d/0x4a [ 637.479784][ C1] rsvp_change+0x291/0x27a0 [ 637.479788][ C1] ? lock_is_held_type+0xbb/0xf0 [ 637.479792][ C1] ? lock_is_held_type+0xbb/0xf0 [ 637.479796][ C1] ? find_held_lock+0x2d/0x110 [ 637.479800][ C1] ? tc_new_tfilter+0x1be4/0x2130 [ 637.479804][ C1] ? tcf_bind_filter.isra.0+0x3c0/0x3c0 [ 637.479808][ C1] ? lock_downgrade+0x830/0x830 [ 637.479812][ C1] ? blackhole_dequeue+0x10/0x10 [ 637.479816][ C1] ? lock_is_held_type+0xbb/0xf0 [ 637.479820][ C1] tc_new_tfilter+0x1398/0x2130 [ 637.479825][ C1] ? tcf_bind_filter.isra.0+0x3c0/0x3c0 [ 637.479829][ C1] ? tc_del_tfilter+0x15c0/0x15c0 [ 637.479833][ C1] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 637.479838][ C1] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 637.479842][ C1] ? lock_is_held_type+0xbb/0xf0 [ 637.479846][ C1] ? security_capable+0x8f/0xc0 [ 637.479850][ C1] ? lock_is_held_type+0xbb/0xf0 [ 637.479854][ C1] ? tc_del_tfilter+0x15c0/0x15c0 [ 637.479858][ C1] rtnetlink_rcv_msg+0x80f/0xad0 [ 637.479862][ C1] ? rtnetlink_put_metrics+0x510/0x510 [ 637.479866][ C1] ? lock_acquire+0x1f3/0xaf0 [ 637.479870][ C1] ? netlink_deliver_tap+0x146/0xb70 [ 637.479874][ C1] netlink_rcv_skb+0x15a/0x430 [ 637.479879][ C1] ? rtnetlink_put_metrics+0x510/0x510 [ 637.479883][ C1] ? netlink_ack+0xa10/0xa10 [ 637.479887][ C1] ? __kmalloc_node_track_caller+0x38/0x60 [ 637.479891][ C1] netlink_unicast+0x533/0x7d0 [ 637.479895][ C1] ? netlink_attachskb+0x810/0x810 [ 637.479899][ C1] ? __phys_addr_symbol+0x2c/0x70 [ 637.479904][ C1] ? __check_object_size+0x171/0x3e4 [ 637.479908][ C1] netlink_sendmsg+0x856/0xd90 [ 637.479912][ C1] ? netlink_unicast+0x7d0/0x7d0 [ 637.479916][ C1] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 637.479921][ C1] ? netlink_unicast+0x7d0/0x7d0 [ 637.479925][ C1] sock_sendmsg+0xcf/0x120 [ 637.479929][ C1] ____sys_sendmsg+0x331/0x810 [ 637.479933][ C1] ? kernel_sendmsg+0x50/0x50 [ 637.479937][ C1] ? do_recvmmsg+0x6d0/0x6d0 [ 637.479941][ C1] ? sock_alloc_file+0x4f/0x190 [ 637.479946][ C1] ? __lock_acquire+0x164a/0x5780 [ 637.479950][ C1] ___sys_sendmsg+0xf3/0x170 [ 637.479954][ C1] ? sendmsg_copy_msghdr+0x160/0x160 [ 637.479959][ C1] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 637.479963][ C1] ? fs_reclaim_release+0x90/0xd0 [ 637.479967][ C1] ? lock_is_held_type+0xbb/0xf0 [ 637.479972][ C1] ? find_held_lock+0x2d/0x110 [ 637.479976][ C1] ? __might_fault+0x11f/0x1d0 [ 637.479980][ C1] ? lock_downgrade+0x830/0x830 [ 637.479984][ C1] ? lock_is_held_type+0xbb/0xf0 [ 637.479988][ C1] __sys_sendmmsg+0x195/0x480 [ 637.479993][ C1] ? __ia32_sys_sendmsg+0xb0/0xb0 [ 637.479997][ C1] ? find_held_lock+0x2d/0x110 [ 637.480001][ C1] ? __fd_install+0x1b4/0x600 [ 637.480005][ C1] ? alloc_file_pseudo+0x1/0x250 [ 637.480009][ C1] ? lock_is_held_type+0xbb/0xf0 [ 637.480013][ C1] ? __fd_install+0x1e6/0x600 [ 637.480017][ C1] ? __sys_socket+0x16d/0x200 [ 637.480022][ C1] ? lock_is_held_type+0xbb/0xf0 [ 637.480026][ C1] ? syscall_enter_from_user_mode+0x1d/0x60 [ 637.480031][ C1] __x64_sys_sendmmsg+0x99/0x100 [ 637.480035][ C1] ? syscall_enter_from_user_mode+0x1d/0x60 [ 637.480039][ C1] do_syscall_64+0x2d/0x70 [ 637.480044][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 637.480048][ C1] RIP: 0033:0x442179 [ 637.480060][ C1] Code: e8 bc 00 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 0f 83 7b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 637.480065][ C1] RSP: 002b:00007ffc4c052a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 637.480075][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000442179 [ 637.480081][ C1] RDX: 04924924924926d3 RSI: 0000000020000200 RDI: 0000000000000004 [ 637.480087][ C1] RBP: 0000000000000000 R08: 0000002000000000 R09: 0000002000000000 [ 637.480093][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000032 [ 637.480099][ C1] R13: 0000000000000000 R14: 000000000000000c R15: 0000000000000004 [ 637.480106][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 0.000 msecs [ 637.484008][ T1165] Kernel panic - not syncing: hung_task: blocked tasks [ 638.136778][ T1165] CPU: 0 PID: 1165 Comm: khungtaskd Not tainted 5.9.0-rc8-syzkaller #0 [ 638.145719][ T1165] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 638.156306][ T1165] Call Trace: [ 638.159768][ T1165] dump_stack+0x198/0x1fd [ 638.164385][ T1165] panic+0x382/0x7fb [ 638.168569][ T1165] ? __warn_printk+0xf3/0xf3 [ 638.173712][ T1165] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 638.179466][ T1165] ? preempt_schedule_thunk+0x16/0x18 [ 638.185312][ T1165] ? watchdog.cold+0x5/0x16b [ 638.190147][ T1165] ? watchdog+0xa82/0x1000 [ 638.194776][ T1165] watchdog.cold+0x16/0x16b [ 638.199470][ T1165] ? reset_hung_task_detector+0x30/0x30 [ 638.205151][ T1165] kthread+0x3b5/0x4a0 [ 638.209429][ T1165] ? __kthread_bind_mask+0xc0/0xc0 [ 638.214613][ T1165] ret_from_fork+0x1f/0x30 [ 638.221181][ T1165] Kernel Offset: disabled [ 638.227194][ T1165] Rebooting in 86400 seconds..