[ 65.841978][ T26] audit: type=1800 audit(1568421386.033:27): pid=9736 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 65.866009][ T26] audit: type=1800 audit(1568421386.033:28): pid=9736 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 66.484575][ T26] audit: type=1800 audit(1568421386.733:29): pid=9736 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 66.507629][ T26] audit: type=1800 audit(1568421386.733:30): pid=9736 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.72' (ECDSA) to the list of known hosts. syzkaller login: [ 76.697525][ T9889] IPVS: ftp: loaded support on port[0] = 21 [ 76.739101][ T9889] chnl_net:caif_netlink_parms(): no params data found [ 76.761108][ T9889] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.768447][ T9889] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.775951][ T9889] device bridge_slave_0 entered promiscuous mode [ 76.783586][ T9889] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.790770][ T9889] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.798323][ T9889] device bridge_slave_1 entered promiscuous mode [ 76.812027][ T9889] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 76.822466][ T9889] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 76.838726][ T9889] team0: Port device team_slave_0 added [ 76.845958][ T9889] team0: Port device team_slave_1 added [ 76.917970][ T9889] device hsr_slave_0 entered promiscuous mode [ 76.986489][ T9889] device hsr_slave_1 entered promiscuous mode [ 77.041476][ T9889] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.048829][ T9889] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.056121][ T9889] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.063224][ T9889] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.087900][ T9889] 8021q: adding VLAN 0 to HW filter on device bond0 [ 77.099130][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 77.107362][ T17] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.114899][ T17] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.122858][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 77.132580][ T9889] 8021q: adding VLAN 0 to HW filter on device team0 [ 77.142295][ T3030] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 77.151104][ T3030] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.158209][ T3030] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.178462][ T9892] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 77.187389][ T9892] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.194465][ T9892] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.202504][ T9892] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 77.212066][ T9892] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 77.220792][ T9892] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 77.228972][ T9892] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready executing program [ 77.238370][ T9892] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 77.247071][ T9889] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 77.261626][ T9889] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 182.336151][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 182.343134][ C0] (detected by 0, t=10502 jiffies, g=9013, q=24) [ 182.349538][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294955376-4294944873), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 182.362872][ C0] kworker/0:2 R running task 27880 3030 2 0x80004008 [ 182.370771][ C0] Workqueue: ipv6_addrconf addrconf_dad_work [ 182.376819][ C0] Call Trace: [ 182.380086][ C0] [ 182.382924][ C0] sched_show_task.cold+0x2ed/0x34e [ 182.388106][ C0] rcu_sched_clock_irq.cold+0xac8/0xc13 [ 182.393664][ C0] update_process_times+0x32/0x80 [ 182.398672][ C0] tick_sched_handle+0xa2/0x190 [ 182.403508][ C0] tick_sched_timer+0x53/0x140 [ 182.408264][ C0] __hrtimer_run_queues+0x364/0xe40 [ 182.413619][ C0] ? tick_sched_do_timer+0x1b0/0x1b0 [ 182.418900][ C0] ? hrtimer_start_range_ns+0xcb0/0xcb0 [ 182.424428][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 182.430141][ C0] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 182.436192][ C0] hrtimer_interrupt+0x314/0x770 [ 182.441119][ C0] smp_apic_timer_interrupt+0x160/0x610 [ 182.446647][ C0] apic_timer_interrupt+0xf/0x20 [ 182.451571][ C0] RIP: 0010:__list_del_entry_valid+0x8b/0xf5 [ 182.457534][ C0] Code: 48 b8 22 01 00 00 00 00 ad de 49 39 c4 0f 84 e2 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 80 3c 02 00 75 53 <49> 8b 14 24 4c 39 f2 0f 85 99 00 00 00 49 8d 7d 08 48 b8 00 00 00 [ 182.477136][ C0] RSP: 0018:ffff8880ae808b20 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 182.485528][ C0] RAX: dffffc0000000000 RBX: ffff88809f8439b8 RCX: ffffffff85c66b39 [ 182.493503][ C0] RDX: 1ffff11013f0874a RSI: ffffffff85c67006 RDI: ffff88809f8439c0 [ 182.501459][ C0] RBP: ffff8880ae808b38 R08: ffff88809fa503c0 R09: 0000000000000000 [ 182.509424][ C0] R10: fffffbfff134afaf R11: ffff88809fa503c0 R12: ffff88809f843a50 [ 182.517376][ C0] R13: ffff88809f843a50 R14: ffff88809f8439b8 R15: 0000000000000000 [ 182.525477][ C0] ? apic_timer_interrupt+0xa/0x20 [ 182.530606][ C0] ? hhf_dequeue+0xb9/0xa20 [ 182.535097][ C0] ? hhf_dequeue+0x586/0xa20 [ 182.539761][ C0] hhf_dequeue+0x5c5/0xa20 [ 182.544178][ C0] __qdisc_run+0x1e7/0x19d0 [ 182.548761][ C0] ? dev_queue_xmit+0x18/0x20 [ 182.553423][ C0] __dev_queue_xmit+0x16f1/0x3650 [ 182.558428][ C0] ? process_backlog+0x206/0x750 [ 182.563346][ C0] ? net_rx_action+0x4d6/0x1030 [ 182.568178][ C0] ? __do_softirq+0x262/0x98c [ 182.572838][ C0] ? do_softirq_own_stack+0x2a/0x40 [ 182.578035][ C0] ? do_softirq.part.0+0x11a/0x170 [ 182.583135][ C0] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 182.588427][ C0] ? quarantine_put+0x11c/0x1c0 [ 182.593265][ C0] ? trace_hardirqs_on+0x67/0x240 [ 182.598278][ C0] ? __skb_ext_put+0xd9/0x210 [ 182.602938][ C0] dev_queue_xmit+0x18/0x20 [ 182.607423][ C0] ? dev_queue_xmit+0x18/0x20 [ 182.612099][ C0] br_dev_queue_push_xmit+0x3f3/0x5c0 [ 182.617455][ C0] ? __skb_ext_del+0xb0/0x2c0 [ 182.622118][ C0] ? lock_downgrade+0x920/0x920 [ 182.626953][ C0] br_nf_dev_queue_xmit+0x34e/0x1470 [ 182.632232][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 182.637941][ C0] br_nf_post_routing+0x1502/0x1d30 [ 182.643122][ C0] ? br_nf_dev_queue_xmit+0x1470/0x1470 [ 182.648650][ C0] ? mark_held_locks+0xf0/0xf0 [ 182.653399][ C0] ? nf_bridge_update_protocol+0x1d0/0x1d0 [ 182.659199][ C0] ? __kasan_kmalloc.constprop.0+0xcf/0xe0 [ 182.664990][ C0] nf_hook_slow+0xbc/0x1e0 [ 182.669399][ C0] br_forward_finish+0x215/0x400 [ 182.674319][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 182.679850][ C0] ? process_one_work+0x9af/0x1740 [ 182.684943][ C0] ? worker_thread+0x98/0xe40 [ 182.689599][ C0] ? kthread+0x361/0x430 [ 182.693826][ C0] ? br_fdb_add.cold+0x8c/0x8c [ 182.698571][ C0] ? ip_vs_out+0x244/0x1700 [ 182.703059][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 182.708760][ C0] ? nf_hook_slow+0xf0/0x1e0 [ 182.713333][ C0] ? should_fail+0x1de/0x852 [ 182.717994][ C0] br_nf_hook_thresh+0x2e9/0x370 [ 182.723869][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 182.729410][ C0] ? setup_pre_routing+0x4b0/0x4b0 [ 182.734529][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 182.740062][ C0] ? br_nf_forward_finish+0x176/0xa90 [ 182.745511][ C0] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 182.751391][ C0] br_nf_forward_finish+0x66c/0xa90 [ 182.756580][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 182.762112][ C0] br_nf_forward_ip+0xc74/0x21e0 [ 182.767050][ C0] ? br_nf_forward_arp+0x1670/0x1670 [ 182.772336][ C0] ? mark_held_locks+0xf0/0xf0 [ 182.777082][ C0] ? br_nf_hook_thresh+0x370/0x370 [ 182.782177][ C0] ? __vlan_flush+0x120/0x120 [ 182.786845][ C0] nf_hook_slow+0xbc/0x1e0 [ 182.791245][ C0] __br_forward+0x393/0xb00 [ 182.795732][ C0] ? br_forward_finish+0x400/0x400 [ 182.800823][ C0] ? br_dev_queue_push_xmit+0x5c0/0x5c0 [ 182.806352][ C0] deliver_clone+0x61/0xc0 [ 182.810749][ C0] br_flood+0x325/0x3d0 [ 182.814888][ C0] br_handle_frame_finish+0xb46/0x1670 [ 182.820330][ C0] ? br_handle_local_finish+0x20/0x20 [ 182.825685][ C0] ? __local_bh_enable_ip+0x15a/0x270 [ 182.831134][ C0] ? audit_alloc_mark+0x420/0x500 [ 182.836146][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 182.841848][ C0] ? nf_hook_slow+0xf0/0x1e0 [ 182.846432][ C0] br_nf_hook_thresh+0x2e9/0x370 [ 182.851372][ C0] ? br_handle_local_finish+0x20/0x20 [ 182.856725][ C0] ? setup_pre_routing+0x4b0/0x4b0 [ 182.861818][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 182.868039][ C0] ? br_handle_local_finish+0x20/0x20 [ 182.874374][ C0] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 182.880248][ C0] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 182.886142][ C0] br_nf_pre_routing_finish_ipv6+0x6fb/0xd80 [ 182.892191][ C0] ? br_handle_local_finish+0x20/0x20 [ 182.897568][ C0] br_nf_pre_routing_ipv6+0x456/0x832 [ 182.902940][ C0] ? br_validate_ipv6+0xb80/0xb80 [ 182.907981][ C0] ? br_nf_pre_routing_finish.cold+0x124/0x124 [ 182.914149][ C0] ? br_nf_pre_routing+0x246/0x2355 [ 182.919346][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 182.925578][ C0] ? skb_pull_rcsum+0x155/0x300 [ 182.930418][ C0] br_nf_pre_routing+0x1743/0x2355 [ 182.935512][ C0] ? br_nf_pre_routing_finish+0x1730/0x1730 [ 182.941384][ C0] ? kernel_text_address+0x73/0xf0 [ 182.946478][ C0] ? unwind_next_frame+0x3b/0x50 [ 182.951412][ C0] ? get_max_files+0x20/0x20 [ 182.955987][ C0] ? br_nf_pre_routing_finish+0x1730/0x1730 [ 182.961873][ C0] br_handle_frame+0x806/0x133e [ 182.966707][ C0] ? br_handle_frame_finish+0x1670/0x1670 [ 182.972408][ C0] ? br_handle_local_finish+0x20/0x20 [ 182.977785][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 182.984008][ C0] ? br_handle_frame_finish+0x1670/0x1670 [ 182.989713][ C0] __netif_receive_skb_core+0xfc1/0x3060 [ 182.995354][ C0] ? rcu_core+0x67f/0x1580 [ 182.999756][ C0] ? rcu_core_si+0x9/0x10 [ 183.004069][ C0] ? __do_softirq+0x262/0x98c [ 183.008729][ C0] ? irq_exit+0x19b/0x1e0 [ 183.013042][ C0] ? smp_apic_timer_interrupt+0x1a3/0x610 [ 183.018743][ C0] ? default_idle_call+0x84/0xb0 [ 183.023663][ C0] ? do_xdp_generic+0x50/0x50 [ 183.028328][ C0] ? __update_load_avg_se+0x726/0xbc0 [ 183.033681][ C0] ? __kasan_check_read+0x11/0x20 [ 183.038684][ C0] ? kvm_clock_read+0x18/0x30 [ 183.043360][ C0] ? __enqueue_entity+0x142/0x390 [ 183.048364][ C0] ? account_entity_enqueue+0x244/0x390 [ 183.053906][ C0] __netif_receive_skb_one_core+0xa8/0x1a0 [ 183.059696][ C0] ? __netif_receive_skb_one_core+0xa8/0x1a0 [ 183.065655][ C0] ? __kasan_check_write+0x14/0x20 [ 183.070749][ C0] ? __netif_receive_skb_core+0x3060/0x3060 [ 183.076627][ C0] ? lock_acquire+0x190/0x410 [ 183.081286][ C0] ? process_backlog+0x195/0x750 [ 183.086327][ C0] __netif_receive_skb+0x2c/0x1d0 [ 183.091334][ C0] process_backlog+0x206/0x750 [ 183.096096][ C0] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 183.101886][ C0] net_rx_action+0x4d6/0x1030 [ 183.106557][ C0] ? napi_complete_done+0x4b0/0x4b0 [ 183.111737][ C0] ? sched_clock+0x2e/0x50 [ 183.116136][ C0] ? ip6_finish_output2+0x106d/0x2520 [ 183.121496][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 183.127719][ C0] __do_softirq+0x262/0x98c [ 183.132219][ C0] ? ip6_finish_output2+0x106d/0x2520 [ 183.137573][ C0] do_softirq_own_stack+0x2a/0x40 [ 183.142572][ C0] [ 183.145495][ C0] do_softirq.part.0+0x11a/0x170 [ 183.150415][ C0] __local_bh_enable_ip+0x211/0x270 [ 183.155609][ C0] ip6_finish_output2+0x10a0/0x2520 [ 183.160831][ C0] ? ip6_forward_finish+0x530/0x530 [ 183.166018][ C0] ? lock_downgrade+0x920/0x920 [ 183.170852][ C0] ? ip6_mtu+0x16f/0x460 [ 183.175094][ C0] __ip6_finish_output+0x444/0xa50 [ 183.180186][ C0] ? __ip6_finish_output+0x444/0xa50 [ 183.185468][ C0] ip6_finish_output+0x38/0x1f0 [ 183.190301][ C0] ip6_output+0x235/0x7c0 [ 183.194612][ C0] ? ip6_finish_output+0x1f0/0x1f0 [ 183.199703][ C0] ? __ip6_finish_output+0xa50/0xa50 [ 183.204969][ C0] ? ndisc_send_skb+0x803/0x1450 [ 183.209894][ C0] ndisc_send_skb+0xf29/0x1450 [ 183.214645][ C0] ? nf_hook.constprop.0+0x560/0x560 [ 183.219920][ C0] ? skb_set_owner_w+0x21b/0x320 [ 183.224862][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 183.230579][ C0] ndisc_send_ns+0x3a9/0x850 [ 183.235153][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 183.241376][ C0] ? ndisc_netdev_event+0x4e0/0x4e0 [ 183.246651][ C0] ? addrconf_dad_work+0xac4/0x1150 [ 183.251830][ C0] ? trace_hardirqs_on+0x67/0x240 [ 183.256850][ C0] ? addrconf_dad_work+0xac4/0x1150 [ 183.262042][ C0] addrconf_dad_work+0xb88/0x1150 [ 183.267397][ C0] ? addrconf_dad_completed+0xbb0/0xbb0 [ 183.272924][ C0] ? lock_acquire+0x190/0x410 [ 183.277591][ C0] ? trace_hardirqs_on+0x67/0x240 [ 183.282598][ C0] process_one_work+0x9af/0x1740 [ 183.287534][ C0] ? pwq_dec_nr_in_flight+0x320/0x320 [ 183.292986][ C0] ? lock_acquire+0x190/0x410 [ 183.297649][ C0] worker_thread+0x98/0xe40 [ 183.302131][ C0] ? trace_hardirqs_on+0x67/0x240 [ 183.307236][ C0] kthread+0x361/0x430 [ 183.311285][ C0] ? process_one_work+0x1740/0x1740 [ 183.316463][ C0] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 183.322685][ C0] ret_from_fork+0x24/0x30 [ 183.327097][ C0] rcu: rcu_preempt kthread starved for 10601 jiffies! g9013 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 183.338181][ C0] rcu: RCU grace-period kthread stack dump: [ 183.344061][ C0] rcu_preempt R running task 29688 10 2 0x80004000 [ 183.351948][ C0] Call Trace: [ 183.355223][ C0] __schedule+0x755/0x1580 [ 183.359636][ C0] ? __sched_text_start+0x8/0x8 [ 183.364482][ C0] schedule+0xd9/0x260 [ 183.368533][ C0] schedule_timeout+0x486/0xc50 [ 183.373362][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 183.378279][ C0] ? usleep_range+0x170/0x170 [ 183.382947][ C0] ? trace_hardirqs_on+0x67/0x240 [ 183.387963][ C0] ? __kasan_check_read+0x11/0x20 [ 183.392985][ C0] ? __next_timer_interrupt+0x1a0/0x1a0 [ 183.398524][ C0] ? swake_up_one+0x60/0x60 [ 183.403016][ C0] ? trace_hardirqs_on+0x67/0x240 [ 183.408024][ C0] rcu_gp_kthread+0x9b2/0x18c0 [ 183.412774][ C0] ? rcu_barrier+0x310/0x310 [ 183.417347][ C0] ? trace_hardirqs_on+0x67/0x240 [ 183.422351][ C0] ? __kasan_check_read+0x11/0x20 [ 183.427376][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 183.433601][ C0] ? __kthread_parkme+0x108/0x1c0 [ 183.438603][ C0] ? __kasan_check_read+0x11/0x20 [ 183.443605][ C0] kthread+0x361/0x430 [ 183.447657][ C0] ? rcu_barrier+0x310/0x310 [ 183.452277][ C0] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 183.458515][ C0] ret_from_fork+0x24/0x30